Journal articles on the topic 'Adaptive Fence'

Dyke-based pumping stations have been linked with high fish mortalities during pumping events. Behavioural barriers like electric fish fences have been proposed as a promising solution to prevent entrainment of fish into pumps. In order to test the effectiveness of such barriers, the intake of a pumping station was equipped with a new generation electric fish fence while fish behaviour was observed with an adaptive resolution imaging sonar (ARIS) during non-electrified (reference) and electrified (treatment) operation modes. This study revealed the functionality of the fish fence as a behavioural barrier, with a fish turning rate of up to 72% at a mean water temperature of 4.3°C and a mean current velocity of 0.05ms–1. These field results suggest that new-generation electric fish fences may be a promising solution to reduce the effects of pumping stations on fish.

Fencing wildlife populations can aid wildlife management goals, but potential benefits may not always outweigh costs of confinement. Population isolation can erode genetic diversity and lead to the accumulation of inbreeding, reducing viability and limiting adaptive potential. We used microsatellite and mitochondrial DNA data collected from 640 white-tailed deer confined within a 1184 ha fence to quantify changes in genetic diversity and inbreeding over the first 12 years of confinement. Genetic diversity was sustained over the course of the study, remaining comparable to unconfined white-tailed deer populations. Uneroded genetic diversity suggests that genetic drift is mitigated by a low level of gene flow, which supports field observations that the fence is not completely impermeable. In year 9 of the study, we observed an unexpected influx of mtDNA diversity and drop in inbreeding as measured by FIS. A male harvest restriction imposed that year increased male survival, and more diverse mating may have contributed to the inbreeding reduction and temporary genetic diversity boost we observed. These data add to our understanding of the long-term impacts of fences on wildlife, but also highlight the importance of continued monitoring of confined populations.

The introduction of non-native species is becoming increasingly common. Understanding the impact of invaders on native populations is critical for effective management. Red imported fire ants ( Solenopsis invicta Buren, 1972) were introduced to the USA in the 1930s. They will attack, and can kill, native fence lizards ( Sceloporus undulatus (Bosc and Daudin in Sonnini and Latreille, 1801)), which co-occur with these ants across much of their invasive range. I determined whether fence lizards minimize encounters with S. invicta by altering their habitat use following invasion or avoiding cues of the presence of these fire ants. I recorded the habitat use of fence lizards and S. invicta mounds across four sites with different histories of invasion, and quantified lizard avoidance of S. invicta scent. I found that lizards do not alter their habitat use following S. invicta invasion, nor do they spatially avoid their mounds. Fence lizards do avoid S. invicta scent, but this was only evident in naïve or recently invaded populations. The lack of avoidance of S. invicta by fence lizards could be explained by the high prevalence of these fire ants, making them difficult to avoid, and adaptive shifts in the escape behaviour and morphology of these lizards following invasion that permit them to survive fire ant attack.

Studies on the PLL (phase locked loop) based interharmonic measurements have been considerably increased recently. The method proposed in this study is a hybrid method based on the frequency analysis. The proposed method presents solutions for the leading problems about the interharmonic measurement, such as fundamental frequency shifting, spectral leakage, and picket-fence effect, using digital PLL and adaptive notch filter. In addition, a new approach is presented to solve the multizero crossing problem encountered in the analysis of the harmonic-interharmonic. Both simulative and field data tests have been performed to verify the effectiveness of the proposed method.

With wider deployments of smart meters, smart grids, and distributed generation, power quality monitoring has become increasingly important. It is well known that fast Fourier transform (FFT) is a powerful tools for power signal harmonic analysis, but leakage effect, picket fence effect, and aliasing effect make FFT suffer from specific restrictions. In this paper, we proposed a new method for power signal harmonic analysis. The major components of this method are a frequency and phasor estimating algorithm, a real time procedure and an adaptive monitoring. To verify this method, we provided the comparisons of this method with FFT.

We assessed 3 years of post-release movements of a reintroduced plains bison (Bison bison bison) population for evidence of anchoring, settling, exploratory and adaptive behavior within a 1200 km2 target reintroduction zone in Banff National Park. We first held them in a soft-release pasture for 18 months, then partially constrained their movements with drift fences and hazing trials to discourage excursions from a 1200 km2 target reintroduction zone. Their post-release movements were within 13 km of the soft-release pasture for the first 3 months, but management interventions were needed to keep the animals within 29 km of the release site and inside the reintroduction zone for the remainder of the 3-year study period. Bison exploration was high in the first year but decreased thereafter, as did the size of their annual home range. Step lengths did not decrease but the frequency of “surge movements” (step lengths > 4 km in 2 h) did. Fence visits did not decrease over time but the need to herd/haze the bison from other, unfenced boundary areas did. The reintroduced bison seasonally selected for rugged, high-elevation habitat despite being translocated from a flat landscape. Our results suggest wild bison reintroductions to areas of just a few hundred square kilometres are possible without perimeter fencing, so long as good habitat and management interventions to discourage broad movements are in place. Trends suggest such interventions will need to continue in Banff until the bison range can be expanded and/or bison movements are constrained by other forces, such as regulated hunting outside the park.

Geological body is the product of the geological evolution in the time dimension and is also the record and the process of structural changes and sequence changes presenting in 3D configuration, so 3D visualization for sedimentary-facies modeling can results in a large quantity of spatial data which can be used for detailed sedimentary-facies modeling. Lishui Depression is taken for an example and the lower of Mingyuefeng Formation is the target formation for this study. Based on the analysis of sequence cycles and sedimentary environment and interpretation of 3D geological objects, the detailed 3D sedimentary-facies model for the lower Mingyuefeng Formation is built with Sequential Indicator Simulation. Then the 3D visualization of local sedimentary-facies is detailedly presented through fence models and profile models. The results prove that the methodology is competent for 3D modeling and self-adaptive visualization of large geological objects and it is a good way to solve the problem of integration and share of geological spatial data.

Organic farming standards do not allow addition of water-soluble fertilisers and therefore it is likely that growth of organically grown crops will be limited by nutrient availability. However, in marginal rainfall conditions, when growth in conventional systems is limited by water availability, yields of organically grown crops could be comparable with those conventionally grown. Similarly, micronutrient-efficient plant varieties could be expected to perform comparatively better under organic farming conditions than they do in conventional systems, when compared with micronutrient-inefficient varieties.In this study, biomass and grain production of wheat from certified organic farming systems were compared with neighbouring conventional farming systems in 'across the fence' field trials in 1 moderate and 2 marginal rainfall areas of South Australia. Wheat varieties compared included 2 old wheat varieties developed under relatively low-input conditions (Baroota Wonder and Dirk-48) and varieties shown to be micronutrient-efficient (Janz and Trident) and inefficient (Yallaroi).The organic farming systems produced significantly less biomass than the conventional farming systems at late tillering in both the moderate and marginal rainfall areas. Grain yield was variable, but significantly lower in the organic farming system for 11 of the 14 comparisons. None of the varieties showed an adaptive advantage for 1 farming system over the other. The relative yield of the organic system, compared with the conventional system, was not associated with rainfall.

Background Measurement of two grazing management’s influence on pasture productivity, soil food web structure, soil organic carbon and soil microbial respiration efficiency was conducted on five southeastern US, across-the-fence ranch pairs to compare adaptive multi-paddock grazing (AMP) management, using short grazing events with planned, adaptive recovery periods, to conventional grazing (CG) management, with continuous grazing at low stock density. Methodology A point-in-time experimental field analysis was conducted to compare five AMP or CG ranch pairs to better understand the influence of grazing management on (a) standing crop biomass productivity; (b) soil food web community population, structure and functionality; (c) soil organic carbon accrual; and d) soil-C (CO2) respiration kinetics. Results AMP grazing systems outperformed CG systems by generating: (a) 92.68 g m−2 more standing crop biomass (SCB), promoting 46% higher pasture photosynthetic capacity (Two sample Mann-Whitney; Z = 6.1836; no DF in MW; p = 6.26 × 10−10; Effect size = 0.35) (b) a strong positive linear relationship of SCB with fungal biomass (R = 0.9915; F(1,3) = 175.35; p = 0.015); fungal to bacterial (F:B) biomass ratio (R = 0.9616; F(1,3) = 36.75; p = 0.009) and a soil food web proxy (R = 0.9616; F(1,3) = 36.75; p = 0.009) and a concurrent very strong inverse relationship with bacteria biomass (R = −0.946; F(1,3) = 25.56; p = 0.015); (c) significant predator/prey interactions with an inverse relationship with bacterial population biomass (R = − 0.946; F(1,3) = 25.56; p = 0.015) and a positive relationship with total protozoa enumeration (R = 0.9826; F(1,3) = 83.68; p = 0.003) when compared to SCB; (d) a 19.52% reduction in soil C (CO2) respiration rates (Two sample t-test; T = −2.3581; DF = 52.3541; p = 0.0221; Effect size = 0.59); and (e) a 20.6% increase in soil organic carbon (SOC) in the top 10 cm of soil profile (Two sample Mann–Whitney; Z = 2.6507; no DF in MW; p = 0.008; Effect size = 0.24). Rancher conversion to AMP grazing strategies would appear to regenerate soil food web population, structure, diversity and biological functionality helping to improve: carbon flow into plant biomass, buildup of soil carbon, predator/prey nutrient cycling and soil microbial respiration efficiency while offering improved climate resilience and a strategy to increase the capture and storage of atmospheric CO2 in soils of the world’s rangeland.

Since the 1990s, with the defense, deterrence, alarm in one of the electronic fence system is gradually being widely developed in the field of public safety. The composition and control system design of a balanced tension electronic fence alarm system is described in this paper. This system has a balanced without fatigue characteristics, adapting to a variety of complex terrain environment and leaving no guard dead. It can be widely applicable to all establishments that have the perimeter guard need.

The varying reasons are outlined for needing to control the movements or otherwise manage a wide range of African animal wildlife species by means of fencing. In all cases there is an underlying conflict of interest between people and animals — principally the larger mammals. Fencing is seen as the most powerful tool in this process of land-use division, and high expectations of fences are held by people who are adversely affected by wildlife activities and similarly by many conservationists. To date the main determinants in the siting and construction of fences have been political pressure or the availability of funds; wildlife fencing is perhaps the only factor having a substantial influence on ecosystems and animal populations that has remained virtually devoid of any serious input of ecological knowledge, of systematic investigation, or of environmental legislation.The wild species requiring management are many and varied in individual size, group size, and dispersal patterns; they also exhibit an array of special behaviours when confronted with a barrier. This means that any barrier will come under very variable levels and types of challenge, and that the effects of it on the biology of both target and non-target species must be carefully considered.Research on the behaviour of animals at fences has been limited, being mostly confined to domestic species or non-African wildlife. Certainly, very little systematic investigation has been carried out to determine whether fences have achieved their objectives or been economically justified, and to what extent they have caused environmental side-effects on the population dynamics of animals or the disturbance of plant communities.Current evidence suggests that electric or power fences are an increasingly efficient way of managing wild mammals and that fencing programmes should become more deflecting than encircling. Fences create ‘hard edges’ between dissimilar forms of land-use and cause long-term inflexibility that limits planning and forecloses options. As the pressure for land becomes more and more acute, the control of wildlife with the help of fences needs to develop into a specialized field of its own, based on sounder ecological, sociological, and economic, principles than hitherto, within the expanding scope of adaptive wildlife management.

Common carp (Cyprinus carpio, L. 1758) are the most abundant pest fish species in Australia, detrimental to ecosystem integrity and values, and in need of suitable management solutions. In January 1995, this destructive pest was discovered in two large, connected Tasmanian lakes—Lakes Crescent (23 km2) and Sorell (54 km2). After an initial assessment, carp were immediately contained to these waters using screens to prevent their escape down-stream, followed by swift legislation to enforce closure of the lakes to the public. Assessment and evaluation of carp numbers occurred throughout the eradication program, with effort focused on Lake Crescent. Beginning with undirected removal, techniques progressively evolved to more sophisticated targeted removal with assistance from biotelemetry, in conjunction with gill netting and electro-fishing. Real-time population estimates and in situ observations resulted in a detailed cumulative understanding of carp population dynamics, behaviour and seasonal habitat choice. This allowed strategic deployment of fences to block access to marshes, and the installation of steel traps within the fences. These gears specifically prevented spawning opportunities, while concurrently capturing mature fish. Following 12 years of adaptive and integrated effort, 7797 carp (fry, juvenile and adult) were captured from Lake Crescent, with the last carp being caught in December 2007. The subsequent 14 years of monitoring has not resulted in the capture of any carp, confirming the successful eradication of carp from Lake Crescent. These management practices have been successfully replicated in the larger Lake Sorell, where 41,499 carp (fry, juvenile and adult) have been removed. It is now estimated that there are few, if any carp remaining. Collectively, the techniques and strategies described here were reliable, and can be applied as a model to control or eradicate pest populations of carp in freshwater lakes elsewhere.

AbstractReintroduction practitioners must often make critical decisions about reintroduction protocols despite having little understanding of the reintroduction biology of the focal species. To enhance the available knowledge on the reintroduction biology of the warru, or black-footed rock-wallabyPetrogale lateralisMacDonnell Ranges race, we conducted a trial reintroduction of 16 captive individuals into a fenced predator and competitor exclosure on the An̲angu Pitjantjatjara Yankunytjatjara Lands in South Australia. We conducted seven trapping sessions and used radio-tracking and camera traps to monitor survival, reproduction and recruitment to the population over 36 months. Blood samples were collected pre-release and during two trapping sessions post-release to assess nutritional health. The survival rate of founders was 63%, with all losses occurring within 10 weeks of release. Post-release blood biochemistry indicated that surviving warru adapted to their new environment and food sources. Female warru conceived within 6 months of release; 28 births were recorded during the study period and 52% of births successfully recruited to the population. Our results suggest that captive-bred warru are capable of establishing and persisting in the absence of introduced predators. However, the high mortality rate immediately post-release, with only a modest recruitment rate, suggests that future releases into areas where predators and competitors are present should use a trial approach to determine the viability of reintroduction. We recommend that future releases of warru into unfenced areas include an intensive monitoring period in the first 3 months post-release followed by a comprehensive long-term monitoring schedule to facilitate effective adaptive management.

Slow-growing desert tree species pose unique conservation challenges; their demography is driven by rare stochastic climatic events, remoteness of populations makes monitoring difficult and, consequently, their management is often information-limited. In particular, the paucity of information on vital rates at a relevant temporal scale makes analyses of demography and population viability difficult. Our objective was to undertake a demographic analysis of the threatened arid-zone tree species (Acacia peuce F.Muell.) that is a model system in terms of being (1) a slow-growing desert tree species whose recruitment is limited to stochastic and rare extreme rainfall events, and (2) a species of conservation significance growing in a remote location where remoteness imposes limitations on conservation monitoring. Complementary analyses using pattern- and process-derived matrix population models, based on a dataset derived from a 30-year monitoring effort, verified that the smallest of the A. peuce populations would continue to grow under current environmental conditions. Population growth in this species is most influenced by the survival or adult and sapling stages. Stochastic demographic simulations revealed that climate change is likely to significantly elevate the risk of population decline, particularly in fragment stands. The long-term viability of A. peuce hinges on sustaining the survival rates of adult and sapling stages by managing stresses to individuals in these stages, and through minimising anthropogenic disturbance to populations during rare, stochastic and extreme rainfall events that trigger recruitment. Extending the current non-binding agreement enabling the use of fences to exclude cattle, and improved interpretative signage to raise awareness of anthropogenic impacts on this species will significantly aid conservation of this species. The integration of modelling, monitoring, and management within a demographic framework can facilitate efficient and effective conservation of slow-growing arid-zone tree species, despite the challenges imposed by remoteness.

AbstractHow to support those responding to environmental change in resource-constrained environments is central to literature on climate change adaption. Our research explores a gap in this literature relating to the negotiation of intra-household relations and resource access across different types of household in contexts of social and environmental transition. Using the example of the semi-arid Awash region in North-Eastern Ethiopia, which has experienced drought and alien plant invasion over the past decade, we explore how men and women use changes in household structures and relationships to adapt more effectively. We draw evidence from life histories with 35 pastoralists across three rural, peri-urban and urban communities. Using Dorward et al.’s taxonomy, we find Afar people are not only ‘stepping up’, but also ‘stepping out’: shifting from pastoralism into agriculture and salaried employment. As this often involves splitting households across multiple locations, we look at how these reconfigured households support pastoralists’ wellbeing.

The requirements for fish protection at hydro power plants have led to a significant decrease of the bar spacing at trash racks as well as the need of an inclined or angled design to improve the guidance effect (fish-friendly trash racks). The flexible fish fence (FFF) is a new developed fish protection and guidance system, created by horizontally arranged steel cables instead of bars. The presented study investigated experimentally the head loss coefficient of an angled horizontal trash rack with circular bars (CBTR) and the FFF with identical cross sections in a flume (scale 1:2). Nine configurations of different bar and cable spacing (blockage ratio) and rack angles were studied for CBTR and FFF considering six different stationary flow conditions. The results demonstrate that head loss coefficient is independent from the studied Bar–Reynolds number range and increases with increasing blockage ratio and angle. At an angle of 30 degrees, a direct comparison between the two different rack options was conducted to investigate the effect of cable vibrations. At the lowest blockage ratio, head loss for both options are in similar very low ranges, while the head loss coefficient of the FFF increases significantly compared to the CBTR with an increase of blockage. Further, the results indicate a moderate overestimation with the predicted head loss by common head loss equations developed for inclined vertical trash racks. Thus, an adaption of the design equation is proposed to improve the estimation of head loss on both rack options.

Abstract With the increasing popularity of hand-held devices, location-based applications and services have access to accurate and real-time location information, raising serious privacy concerns for their users. The recently introduced notion of geo-indistinguishability tries to address this problem by adapting the well-known concept of differential privacy to the area of location-based systems. Although geo-indistinguishability presents various appealing aspects, it has the problem of treating space in a uniform way, imposing the addition of the same amount of noise everywhere on the map. In this paper we propose a novel elastic distinguishability metric that warps the geometrical distance, capturing the different degrees of density of each area. As a consequence, the obtained mechanism adapts the level of noise while achieving the same degree of privacy everywhere. We also show how such an elastic metric can easily incorporate the concept of a “geographic fence” that is commonly employed to protect the highly recurrent locations of a user, such as his home or work. We perform an extensive evaluation of our technique by building an elastic metric for Paris’ wide metropolitan area, using semantic information from the OpenStreetMap database. We compare the resulting mechanism against the Planar Laplace mechanism satisfying standard geo-indistinguishability, using two real-world datasets from the Gowalla and Brightkite location-based social networks. The results show that the elastic mechanism adapts well to the semantics of each area, adjusting the noise as we move outside the city center, hence offering better overall privacy.1

Natural grasslands cover around 40% of the Earth’s surface and play an important role as a source of ecological goods and services. By sequestering around 30% of terrestrial global carbon, grasslands play a critical part in the alleviation of climate change. Despite their ecological significance, grasslands have been reduced to a fraction of their original extent. In Canada, up to 70% of grasslands have been destroyed, making it the most endangered ecosystem in North America. What remains is often intensely grazed and a diverse ecosystem of wild animals is replaced by domestic livestock. The continuous application of poor grazing management by ranchers is one of the main causes for the depletion of natural grasslands, resulting in the release of stored soil carbon back into the atmosphere. Fortunately, 60-70% of the depleted carbon can be re-sequestered through the adoption of improved grazing management, thus improving grassland ecosystems. The Adaptive Multi-Paddock (AMP) grazing system is an example of improved grazing management. AMP grazing is a system in which livestock is frequently rotated between multiple fenced paddocks. Compared to conventional grazing practices (Non-AMP), the AMP system is a favorable solution which can improve carbon sequestration in world wide grasslands soils– and in turn, contribute to the mitigation of climate change. By regenerating grassland ecosystems, AMP grazing could potentially aid in creating a more sustainable, resilient agroecosystem. Our goal is to study the effect of AMP grazing on soil organic carbon (SOC) sequestration in Canadian grasslands. First, we collected soil cores from 30 study sites located throughout the grassland ecoregions in Canada. Each site consisted of a pair of ranches: one AMP and one Non-AMP. Second, we analyzed the soil cores for total carbon using an elemental analyzer. There does not seem to be any substantial difference in total carbon between AMP and Non-AMP systems, however we have yet to differentiate between soil organic carbon and soil inorganic carbon. Once we distinguish the two variables we will be able to confirm the effectiveness of the AMP grazing system in increasing carbon sequestration in Canadian grasslands. Literature Cited: Derner, J. D., & Schuman, G. E. (2007). Carbon sequestration and rangelands: a synthesis of land management and precipitation effects. Journal of soil and water conservation, 62(2), 77-85. Gauthier, D. A., & Wiken, E. B. (2003). Monitoring the conservation of grassland habitats, Prairie Ecozone, Canada. Environmental Monitoring and Assessment, 88(1-3), 343-364. Samson, F., & Knopf, F. (1994). Roundtable: prairie conservation in North America. BioScience, 44(6), 418-421 Kraus, D. (2016). Why Canada’s Prairies are the World’s Most Endangered Ecosystem. Retrieved from: http://www.natureconservancy.ca/en/blog/archive/grasslands-the-most.html#.XUnsE-hKi70 Lal, R. (2002). Soil carbon dynamics in cropland and rangeland. Environmental pollution, 116(3), 353-362 Teague, W. R. (2018). Forages and pastures symposium: Cover crops in livestock production: Whole-system approach: Managing grazing to restore soil health and farm livelihoods. Journal of animal science, 96(4), 1519-1530.

Introduction. Ground constructions for salt therapy, which differ in the composition of minerals and in the modification of therapeutic surfaces, are actively used in Russia and abroad. The abiotic surfaces of these devices are susceptible to microbial contamination, the sources of which are the upper respiratory tract, the skin of patients and medical staff. The aim of the work is to assess the viability of microorganisms on abiotic surfaces identical to the material for the manufacture of salt physiotherapy constructions. Material and methods. 6 and 24 hours after application to abiotic surfaces with different relief there was evaluated the survival rate of reference gram-positive and gram-negative cultures of microorganisms and isolated ones from salt rooms. Viable cells were determined by the method of decimal dilutions in terms of the number of colonies-forming units (CFU). Results. It was found that bacterial cells can preserve at the halite and various surfaces of sylvinite for at least 24 hours. The viability of microorganisms was independent of the ratio of minerals (halite/sylvin) in the samples. The structure of the surface of sylvinite: the largest number of microorganisms was retained on crushed sylvinite (7.98E+02 ± 1.62E+03 CFU/ml was a significant factor for the survival of bacteria. Despite a great survival of staphylococci in comparison with gram-negative opportunistic pathogenic bacteria on all the surfaces studied, no significant differences between the groups were detected. In this case, bacteria isolated from salt structures were more resistant to salt load due to adaptive modification of microorganisms, including increasing the hydrophobicity of the cell wall, increasing their ability to survive. Bacteria grown on a solid agar medium proved to be more tolerant of the conditions of osmotic stress. Conclusion. The obtained data confirm the dependence of the adaptive mechanisms on the environmental conditions and the initial physiological state of cells. The results of studies on the survival of bacteria on salt surfaces of various types indicate their resistance to high concentrations of salts, which raises the question of special methods for treating fences of salt therapy structures.

Lumpy skin disease (LSD) is among a number of vector-borne diseases (VBDs) threatening the Balkans and therefore, preventing feeding of insects on cattle would reduce the spread of VBDs. In order to test the efficiency of Livestock Protective Fences (LPF) in the protection of dairy cattle from insect bites, a case-control study was conducted, in the districts of Nisava, Pirot and Pcinja, Southern Serbia. It consisted in comparing the number of biting flies collected within time, between 10 farms protected with LPF and 10 non protected ones. The insects were collected using two types of traps; the monoconical Vavoua trap set outside in between forested areas or rivers and the actual farm, and the BGsentinel trap baited with CO2, placed in proximity of the cattle but outside the stable. Vectors were collected every 15 days for 48 hours from May to October 2018 and kept in vials containing 70% of ethanol. Catches per trap were separately stored and for each trap, insects were classified according to species and sex and then counted. Data on milk parameters were analyzed separately, on data collected within protected farms, before and after the LPF deployment, and on data without protection at all. It was not possible to detect a direct impact of LPF on vector densities but the number of bacteria colonies (CFU) values were reduced. Some corrections/adaption in the methodology used may lead to better impact.

Gated communities in Jakarta had increased in numbers ever since the incident of 1998 riots. The Idea that was meant to create a better community carried out side-effects that highlighted the differences in terms of races and class. It led to a formation of a divided society where people would be less likely to interact with the other groups. The upper middle class chinese is one that has grown colder toward the larger society. This can be seen clearly in how the height of fences in local houses has kept increasing up until now. They rarely use public spaces where people from different backgrounds are present. And as long as public buildings come as an intervention from the outside world, this group will remain untouched. The Adaptive Public Space in Pluit is based on an idea called "Living Architecture" that thinks of architecture not as a final product. Rather, it embraces the possible architectural changes that could happen as a means of adapting in respose to future changes. Though both the idea and the building comes as an intervention, its sustainability fully depends on the contribution of the locals. Participatory design method is applied not in the pre-construction phase, but instead, in the process of maintaining the continuity of this project. It is a place where those who live in abundance materially can donate anything they want to those in need around them, solving issues caused by the social gap through a small scale project. This is a project in which people are asked to be a participant and not just a guest. Keywords: change; contribution; donate; gated community; social gap Abstrak Sejak kerusuhan 1998, komunitas berpagar telah tumbuh signifikan dalam hal jumlah di Jakarta. Ide yang awalnya ditujukan untuk menyediakan lingkungan yang lebih aman justru semakin menegaskan perbedaan yang ada dalam hal etnis maupun kemampuan ekonomi. Hal ini menyebabkan masyarakat semakin terbagi dan tidak terbiasa berinteraksi dengan kelompok yang berbeda. Etnis Tionghoa menengah atas adalah salah satu yang semakin menutup diri dari lingkungan sekitarnya. Hal ini terlihat jelas pada semakin tingginya pagar rumah dan intensitas penggunaan ruang publik bersama oleh kelompok ini sangat rendah. Dalam menghadapi hal ini, pembangunan ruang publik belum dapat menjawab persoalan yang ada karena masih berupa intervensi langsung dari pihak luar. Berangkat dari tema arsitektur yang hidup, Ruang Publik Adaptif Pluit hadir bukan sebagai produk akhir arsitektur tetapi awal dari upaya adaptasi sebuah produk arsitektur terhadap lingkungan saat ini dan perubahan yang akan datang. Program dan bangunan yang ada merupakan bentuk intervensi dari dunia arsitektur namun keberlangsungannya bergantung penuh pada peran warga lokal dalam keseharian mereka. Dalam hal ini metode perancangan partisipatori diterapkan bukan dalam perancangan tetapi dalam kelanjutannya. Sebagai tempat di mana kelompok menengah atas bisa mendonasikan dari kelebihan mereka kepada yang membutuhkan, ketegangan akibat kesenjangan sosial diharapkan dapat diselesaikan dari skala terkecil. Ruang publik yang memberikan ruang bagi penggunanya untuk menjadi partisipan dan bukan sekedar tamu.

Pitting corrosion presents challenges for ultrasonic nondestructive evaluation due to the small pit dimension. Few Lamb wave-based techniques have achieved the identification of individual pits as subwavelength wave scatterers that are densely packed in a small cluster. In this article, noncontact laser vibrometry-based fence-like arrays with wavefield filtering-assisted adaptive imaging algorithms are developed for detecting and identifying small pits in a cluster. Signals of back scattering waves induced by a cluster of subwavelength scatterers are acquired by noncontact laser Doppler vibrometry at sensing points and form a fence-like array surrounding the area of inspection. The signals are then processed by our array imaging algorithms to construct inspection images which take advantage of three techniques, including the wave mode and wave direction filters to extract single-mode back scattering Lamb waves induced by subwavelength scatterers, the pseudo-reversal propagation of back scattering waves to address the dispersion effect and improve the radial imaging resolution, and the adaptive weighting to improve the angular imaging resolution. Moreover, this work introduces the wave diffraction-related Rayleigh and Abbe limits that are conventionally used for characterizing optic lenses, for characterizing the resolution limit of Lamb wave-based arrays, and optimizing the array configuration. To validate our array imaging approach, a proof-of-concept experiment has been performed to detect a cluster of 3 × 3 pits with the pit diameter of 2 mm and the interval of 2 mm in a 3.2-mm thick aluminum plate; the experimental imaging result shows that our method can identify most pits except the one at the center of the pit cluster. We believe this study will benefit the design, characterization, and optimization of Lamb wave-based arrays for subwavelength resolution imaging and enable potential applications for the noncontact inspection of hidden pitting corrosion in civil, petrochemical, nuclear, and aerospace structures.

AbstractThe earth’s mountains continue to lose water. Glaciers are melting and mountain snow/rain balance tilts increasingly liquescent. Water is running off sooner—sometimes overfilling reservoirs, causing flooding, and setting the stage for late-season shortages. One adaptive strategy is to recover and enhance water-storage capacities of headwater riparian systems. Grazing, a common use of headwater lands, affects both soils and vegetation. To better understand how grazing might affect water storage and other ecosystem services of high elevation riparian wetlands, we measured soil-profile temperatures, soil organic matter (SOM), and phytomass at six sites in the upper Sweetwater River sub-basin of Wyoming, USA, where fence lines allowed us to contrast grazing management. We found grazed wetlands consistently had warmer soils than fenced wetlands. We found added evidence that SOM is important in both soil temperature control and water-storage potential of wetlands. We review evidence that warmer soil temperatures and drying cause loss of SOM with the implied concomitant C losses through erosion and emissions. We recommend land managers of temperate-climate headwater systems consider the need to end growing seasons with full stands of riparian vegetation to reduce soil warming and to build organic matter—particularly on lands where municipalities and other downstream water users are seeking long-term increases in water yields and less flooding.

Abstract The adaptive significance of colorful or exaggerated traits (i.e., ornaments) expressed in females is often unclear. Competing hypotheses suggest that expression of female ornaments arises from maladaptive (or neutral) genetic inheritance from males along with incomplete epigenetic regulation, or from positive selection for ornaments in females under social competition. Whether costly or advantageous, the visibility of such traits can sometimes be behaviorally modulated in order to maximize fitness. Female eastern fence lizards express blue badges that are variable in size and color saturation. These are rudimentary compared to those seen in males and carry important costs such as reduced mating opportunities. Body temperature is a well-established enhancer of badge color, and thus thermoregulation may be one way these animals modulate badge visibility. We quantified realized body temperatures of female lizards paired in laboratory trials and observed that females with larger badges attained higher body temperatures when freely allowed to thermoregulate, sometimes beyond physiological optima. In this association between phenotype and behavior, females with larger badges exhibited thermoregulatory patterns that increase their badges’ visibility. This signal-enhancing behavior is difficult to reconcile with the widely held view that female ornaments are maladaptive, suggesting they may carry context-dependent social benefits.

Abstract Elevated maternal glucocorticoid levels during gestation can lead to phenotypic changes in offspring via maternal effects. Although such effects have traditionally been considered maladaptive, maternally derived glucocorticoids may adaptively prepare offspring for their future environment depending upon the correlation between maternal and offspring environments. Nevertheless, relatively few studies test the effects of prenatal glucocorticoid exposure across multiple environments. We tested the potential for ecologically relevant increases in maternal glucocorticoids in the eastern fence lizard (Sceloporus undulatus) to induce adaptive phenotypic changes in offspring exposed to high or low densities of an invasive fire ant predator. Maternal treatment had limited effects on offspring morphology and behavior at hatching, but by 10 days of age, we found maternal treatment interacted with offspring environment to alter anti-predator behaviors. We did not detect differences in early-life survival based on maternal treatment or offspring environment. Opposing selection on anti-predator behaviors from historic and novel invasive predators may confound the potential of maternal glucocorticoids to adaptively influence offspring behavior. Our test of the phenotypic outcomes of transgenerational glucocorticoid effects across risk environments provides important insight into the context-specific nature of this phenomenon and the importance of understanding both current and historic evolutionary pressures.

Abstract Savannahs are often branded by livestock grazing with resulting land degradation. Holistic management of livestock was proposed to contribute to biodiversity conservation by simulating native wildlife grazing behaviour. This study attempts the comparison of the impact of a holistic management regime to a wildlife grazing management regime on grass and ground-dwelling beetle species diversity on neighboring farms in Namibian rangeland. Results show that the response of biodiversity in species richness and composition to holistic management of livestock differs substantially from wildlife grazing with a positive impact. From a total of 39 identified species of ground-dwelling beetles (Coleoptera: Tenebrionidae, Carabidae) from 29 genera, eight species were found to be indicators for holistic management of livestock and three were found to be indicators for wildlife grazed rangeland. Observations suggest that holistic management of livestock may contribute to biodiversity conservation, but the differential effect of grazing management on species assemblages suggests that livestock grazing cannot replace native wildlife herbivory. Implications for insect conservation An adaptive management strategy such as holistic management used in this study shows the potential to support high beetle biodiversity. Holistic management of livestock thus aspects in favour for a sustainable form of grazing management for insect conservation even though it does not functionally replace grazing by native wildlife.

Abstract This paper presents the application of machine learning algorithms to identify pigs’ behaviors from data collected using the wireless sensor nodes mounted on pigs. The sensor node attached to a pig’s back senses the acceleration and angular velocity in three axes, and the sensed data is transmitted to a host computer wirelessly. Two video cameras, one attached to the ceiling of the pigpen and the other one to a fence, provided ground truth for data annotations. The data was collected from pigs for 131 hours over two months. As the typical behavior period depends on the behavior type, we segmented the acceleration data with different window sizes (WS) and step sizes (SS), and tested how the classification performance of different activities varied with different WS and SS. After exploring the possible combinations, we selected the optimum WS and SS. To compare performance, we used five machine learning algorithms, specifically support vector machine, k-nearest neighbors, decision tree, naïve Bayes, and random forest. Among the five algorithms, random forest achieved the highest F1 score for four major behaviors consisting of 92.36% in total. The F1 scores of the algorithm were 0.98 for ‘eating’, 0.99 for ‘lying’, 0.93 for ‘walking’, and 0.91 for ‘standing’ behaviors. The optimal WS was 7 seconds for ‘eating’ and ‘lying’, and 3 seconds for ‘walking’ and ‘standing’. The proposed work demonstrates that, based on the length of behavior, the adaptive window and step sizes increase the classification performance.

Documenting current species distribution patterns and their association with habitat types is important as a basis for assessing future range shifts in response to climate change or other influences. We used the adaptive local convex hull (a-LoCoH) method to map distribution ranges of 12 ungulate species within the Kruger National Park (KNP) based on locations recorded during aerial surveys (1980–1993). We used log-linear models to identify changes in regional distribution patterns and chi-square tests to determine shifts in habitat occupation over this period. We compared observed patterns with earlier, more subjectively derived distribution maps for these species. Zebra, wildebeest and giraffe distributions shifted towards the far northern section of the KNP, whilst buffalo and kudu showed proportional declines in the north. Sable antelope distribution contracted most in the north, whilst tsessebe, eland and roan antelope distributions showed no shifts. Warthog and waterbuck contracted in the central and northern regions, respectively. The distribution of impala did not change. Compared with earlier distributions, impala, zebra, buffalo, warthog and waterbuck had become less strongly concentrated along rivers. Wildebeest, zebra, sable antelope and tsessebe had become less prevalent in localities west of the central region. Concerning habitat occupation, the majority of grazers showed a concentration on basaltic substrates, whilst sable antelope favoured mopane-dominated woodland and sour bushveld on granite. Buffalo showed no strong preference for any habitats and waterbuck were concentrated along rivers. Although widespread, impala were absent from sections of mopane shrubveld and sandveld. Kudu and giraffe were widespread through most habitats, but with a lesser prevalence in northern mopane-dominated habitats. Documented distribution shifts appeared to be related to the completion of the western boundary fence and widened provision of surface water within the park. Conservation implications: The objectively recorded distribution patterns provide a foundation for assessing future changes in distribution that may take place in response to climatic shifts or other influences.

Documenting current species distribution patterns and their association with habitat types is important as a basis for assessing future range shifts in response to climate change or other influences. We used the adaptive local convex hull (a-LoCoH) method to map distribution ranges of 12 ungulate species within the Kruger National Park (KNP) based on locations recorded during aerial surveys (1980–1993). We used log-linear models to identify changes in regional distribution patterns and chi-square tests to determine shifts in habitat occupation over this period. We compared observed patterns with earlier, more subjectively derived distribution maps for these species. Zebra, wildebeest and giraffe distributions shifted towards the far northern section of the KNP, whilst buffalo and kudu showed proportional declines in the north. Sable antelope distribution contracted most in the north, whilst tsessebe, eland and roan antelope distributions showed no shifts. Warthog and waterbuck contracted in the central and northern regions, respectively. The distribution of impala did not change. Compared with earlier distributions, impala, zebra, buffalo, warthog and waterbuck had become less strongly concentrated along rivers. Wildebeest, zebra, sable antelope and tsessebe had become less prevalent in localities west of the central region. Concerning habitat occupation, the majority of grazers showed a concentration on basaltic substrates, whilst sable antelope favoured mopane-dominated woodland and sour bushveld on granite. Buffalo showed no strong preference for any habitats and waterbuck were concentrated along rivers. Although widespread, impala were absent from sections of mopane shrubveld and sandveld. Kudu and giraffe were widespread through most habitats, but with a lesser prevalence in northern mopane-dominated habitats. Documented distribution shifts appeared to be related to the completion of the western boundary fence and widened provision of surface water within the park. Conservation implications: The objectively recorded distribution patterns provide a foundation for assessing future changes in distribution that may take place in response to climatic shifts or other influences.

Abstract Individuals should prefer and use habitats that confer high fitness, but habitat use is not always adaptive. Vegetation in natural landscapes changes gradually and the ability of species to adaptively adjust their habitat use to long-term changes is largely unstudied. We studied nest patch and territory use over 28 yr in Orange-crowned Warblers (Oreothlypis celata) in a system that has undergone natural long-term changes in vegetation. Abundance of maple (Acer grandidentatum), its preferred nesting habitat, gradually declined from 1987 to 2015. We examined whether habitat use and its fitness consequences changed as the availability of preferred habitat decreased. We used resource selection function models to determine changes over time in the probability of using a nest patch given available patches, and the probability of using a territory given available territories. We estimated nest survival to evaluate changes over time in the fitness consequences of nest patch use. We also compared habitat use (nest patch and territory) and fitness (nest survival) between areas with naturally reduced abundance of maple and experimentally increased abundance of maple (fenced areas). Nest patch use depended on maple abundance and did not change drastically across 28 yr, even though the availability of preferred maple patches decreased over time. In contrast, nest survival tended to decrease over time. We did not see differences in nest patch use and nest survival between unfenced and fenced areas, unlike territory use, which increased with the abundance of maple in fenced areas and decreased in unfenced areas. Our study depicts one example of relatively unchanged habitat use in the face of decreased availability of preferred vegetation across years, with a resulting decrease in reproductive success. Investigating changes in habitat use and fitness consequences for animals exposed to long-term habitat change is necessary to understand adaptive behavioral responses.

This study evaluated the psychometric quality of a computerized adaptive testing (CAT) version of the general cognitive ability test (GCAT), using a simulation study protocol put forth by Han, K. T. (2018a). For the needs of the analysis, three different sets of items were generated, providing an item pool of 165 items. Before evaluating the efficiency of the GCAT, all items in the final item pool were linked (equated), following a sequential approach. Data were generated using a standard normal for 10,000 virtual individuals ( M = 0 and SD = 1). Using the measure’s 165-item bank, the ability value (θ) for each participant was estimated. maximum Fisher information (MFI) and maximum likelihood estimation with fences (MLEF) were used as item selection and score estimation methods, respectively. For item exposure control, the fade away method (FAM) was preferred. The termination criterion involved a minimum SE ≤ 0.33. The study revealed that the average number of items administered for 10,000 participants was 15. Moreover, the precision level in estimating the participant’s ability score was very high, as demonstrated by the CBIAS, CMAE, and CRMSE). It is concluded that the CAT version of the test is a promising alternative to administering the corresponding full-length measure since it reduces the number of administered items, prevents high rates of item exposure, and provides accurate scores with minimum measurement error.

In order to continue the current rate of improvements in aircraft performance, aircraft and components which are continuously optimized for all flight conditions, will be needed. Toward this goal morphing-capable, adaptive structures based on shape memory alloy (SMA) technology that enable component and system-level optimization at multiple flight conditions are being developed. This paper reviews five large-scale SMA based technology programs initiated by The Boeing Company. The SAMPSON smart inlet program showed that fully integrated SMA wire bundles could provide a fighter aircraft with a variable engine inlet capability. The reconfigurable rotor blade program demonstrated the ability of highly robust, controlled 55-Nitinol tube actuators to twist a rotor blade in a spin stand test to optimize rotor aerodynamic characteristics. The variable geometry chevron (VGC) program, which was the first use of 60-Nitinol for a major aerospace application, included a flight test and static engine test of the GE90-115B engine fitted with controlled morphing chevrons that reduced noise and increased engine efficiency. The deployable rotor tab employed tube actuators to deploy and retract small fences capable of significantly reducing blade-vortex interaction generated noise on a rotorcraft. Most recently, the variable geometry fan nozzle program has built on the VGC technology to demonstrate improved jet engine performance. Continued maturation of SMA technology is needed in order to develop innovative applications and support their commercialization.

Regenerative grazing management (ReGM) seeks to mimic natural grazing dynamics to restore degraded soils and the ecological processes underpinning sustainable livestock production while enhancing biodiversity. Regenerative grazing, including holistic planned grazing and related methods, is an adaptive, rotational stocking approach in which dense livestock herds are rotated rapidly through multiple paddocks in short bouts of grazing to defoliate plants evenly and infrequently, interspersed with long recovery periods to boost regrowth. The concentrated “hoof action” of herds in ReGM is regarded vital for regenerating soils and ecosystem services. Evidence (from 58 studies) that ReGM benefits biodiversity is reviewed. Soils enriched by ReGM have increased microbial bioactivity, higher fungal:bacteria biomass, greater functional diversity, and richer microarthropods and macrofauna communities. Vegetation responds inconsistently, with increased, neutral, or decreased total plant diversity, richness of forage grasses and invasive species under ReGM: grasses tend to be favored but shrubs and forbs can be depleted by the mechanical action of hooves. Trampling also reduces numerous arthropods by altering vegetation structure, but creates favorable habitat and food for a few taxa, such as dung beetles. Similarly, grazing-induced structural changes benefit some birds (for foraging, nest sites) while heavy stocking during winter and droughts reduces food for seedeaters and songbirds. With herding and no fences, wildlife (herbivores and predators) thrives on nutritious regrowth while having access to large undisturbed areas. It is concluded that ReGM does not universally promote biodiversity but can be adapted to provide greater landscape habitat heterogeneity suitable to a wider range of biota.

Elephant were previously widespread in savanna and coastal systems of KwaZulu-Natal (KZN), but were virtually extirpated by 1870. Over time, elephant have been reintroduced into their former range in KZN, but always onto small fenced systems (mean size 191.3 km2 ± 87.8 km2, median size 107.0 km2, range 14 km2 – 900 km2). These populations have increased rapidly (8.4% per annum), and although a number of populations are now being managed using contraception, the majority of the populations (66.7%, 14 out of 21) are stocked above the ‘preferred density’ as defined in their approved management plans, while others will soon exceed the preferred density. Vulture populations in KZN are small, declining and already at risk of extinction. In KZN, 94.2% of tree-nesting vulture nests occur in areas with elephant; this could increase to 99.5% in the near future if proposed land-use change takes place. Anthropogenic impacts in the broader landscape mean that there are limited opportunities for vultures to nest elsewhere, and we hypothesise that loss of suitable nesting habitat in existing areas, including through impact of elephant on large trees, could result in declines and even extirpation of these species as breeding residents. Given the demonstrated and potential impacts of elephants on large trees necessary for vulture nesting, it is essential that the role of protected areas and extensive wildlife systems for vultures be adequately taken into account when managing elephant populations. It is important that a precautionary and adaptive management approach is taken regarding management of elephant in areas important for vultures, at least until the ecological interactions between vultures, vegetation, elephant and other drivers are better understood, and until the willingness and ability to manage elephant numbers and impact according to the elephant management plans are demonstrated.

<b><i>Introduction:</i></b> Studies that examine the role of rare variants in both simple and complex disease are increasingly common. Though the usual approach of testing rare variants in aggregate sets is more powerful than testing individual variants, it is of interest to identify the variants that are plausible drivers of the association. We present a novel method for prioritization of rare variants after a significant aggregate test by quantifying the influence of the variant on the aggregate test of association. <b><i>Methods:</i></b> In addition to providing a measure used to rank variants, we use outlier detection methods to present the computationally efficient Rare Variant Influential Filtering Tool (RIFT) to identify a subset of variants that influence the disease association. We evaluated several outlier detection methods that vary based on the underlying variance measure: interquartile range (Tukey fences), median absolute deviation, and SD. We performed 1,000 simulations for 50 regions of size 3 kb and compared the true and false positive rates. We compared RIFT using the Inner Tukey to 2 existing methods: adaptive combination of <i>p</i> values (ADA) and a Bayesian hierarchical model (BeviMed). Finally, we applied this method to data from our targeted resequencing study in idiopathic pulmonary fibrosis (IPF). <b><i>Results:</i></b> All outlier detection methods observed higher sensitivity to detect uncommon variants (0.001 &#x3c; minor allele frequency, MAF &#x3e; 0.03) compared to very rare variants (MAF &#x3c;0.001). For uncommon variants, RIFT had a lower median false positive rate compared to the ADA. ADA and RIFT had significantly higher true positive rates than that observed for BeviMed. When applied to 2 regions found previously associated with IPF including 100 rare variants, we identified 6 polymorphisms with the greatest evidence for influencing the association with IPF. <b><i>Discussion:</i></b> In summary, RIFT has a high true positive rate while maintaining a low false positive rate for identifying polymorphisms influencing rare variant association tests. This work provides an approach to obtain greater resolution of the rare variant signals within significant aggregate sets; this information can provide an objective measure to prioritize variants for follow-up experimental studies and insight into the biological pathways involved.

Wandering the aisles of my local Woolworths in April this year, I noticed a large number of chocolate bilbies replacing chocolate rabbits. In these harsh economic times it seems that even the Easter bunny is in danger of losing his Easter job. While the changing shape of Easter chocolate may seem to be a harmless affair, the expulsion of the rabbit from Easter celebrations has a darker side. In this paper I look at the campaign to replace the Easter bunny with the Easter bilby, and the implications this mediated conservation move has for living rabbits in the Australian ecosystem. Essential to this discussion is the premise that studies of ecology must take into account the impact of media and culture on environmental issues. Of particular interest is the role of narrative, and the way the stories we tell about rabbits determine how they are treated in real life. While I recognise that the Australian bilby’s struggle for survival is a tale which should be told, I also argue that the vilification of the European-Australian rabbit is part of the native/invasive dualism which has ceased to be helpful, and has instead become a motivator of unproductive violence. In place of this simplified dichotomous narrative, I propose an ethic of "ecological remembrance" to combat the totalising eradication of the European rabbit from the Australian environment and culture. The Bilby vs the Bunny: A Case Study in "Media Selection" Easter Bunny says, ‘Bilby, I want you to have my job.You know about sharing and taking care.I think Australia should have an Easter Bilby.We rabbits have become too greedy and careless.Rabbits must learn from bilbies and other bush creatures’. The lines above are taken from Ali Garnett and Kaye Kessing’s children’s story, Easter Bilby, co-published by the Australian Anti-Rabbit Research Foundation as part of the campaign to replace the Easter bunny with the eco-politically correct Easter bilby. The first chocolate bilbies were made in 1982, but the concept really took off when major chocolate retailer Darrell Lea became involved in 2002. Since this time Haigh’s chocolate, Cadbury, and Pink Lady have also released delicious cocoa natives for consumption, and both Darrell Lea and Haigh’s use their profits to support bilby assistance programs, creating the “pleasant Easter sensation” that “eating a chocolate bilby is helping save the real thing” (Phillips). The Easter bilby campaign is a highly mediated approach to conservation which demonstrates the new biological principle Phil Bagust has recognised as “media selection.” Bagust observes that in our “hybridised global society” it is impossible to separate “the world of genetic selection from the world of human symbolic and material diversity as if they exist in different universes” (8). The Australian rabbit thrives in “natural selection,” having adapted to the Australian environment so successfully it threatens native species and the economic productivity of farmers. But the rabbit loses out in “cultural selection” where it is vilified in the media for its role in environmental degradation. The campaign to conserve the bilby depends, in a large part, on the rabbit’s failures in “media selection”. On Good Friday 2012 Sky News Australia quoted Mike Drinkwater of Wild Life Sydney’s support of the Easter bilby campaign: Look, the reason that we want to highlight the bilby as an iconic Easter animal is, number one, rabbits are a pest in Australia. Secondly, the bilby has these lovely endearing rabbit-like qualities. And thirdly, the bilby is a beautiful, iconic, native animal that is struggling. It is endangered so it’s important that we do all we can to support that. Drinkwater’s appeal to the bilby’s “endearing rabbit-like qualities” demonstrates that it is not the Australian rabbit’s individual embodiment which detracts from its charisma in Australian society. In this paper I will argue that the stories we tell about the European-Australian rabbit’s alienation from Indigenous country diminish the species cultural appeal. These stories are told with passionate conviction to save and protect native flora and fauna, but, too often, this promotion of the native relies on the devaluation of non-native life, to the point where individual rabbits are no longer morally considerable. Such a hierarchical approach to conservation is not only ethically problematic, but can also be ineffective because the native/invasive approach to ecology is overly simplistic. A History of Rabbit Stories In the Easter Bilby children’s book the illustrated rabbit offers to make itself disappear from the “Easter job.” The reason for this act of self-destruction is a despairing recognition of its “greedy and careless” nature, and at the same time, its selfless offer to be replaced by the ecologically conscious Bilby. In this sacrificial gesture is the implicit offering of all rabbit life for the salvation of native ecosystems and animal life. This plot line slots into a much larger series of stories we have been telling about the Australian environment. Libby Robin has observed that settler Australians have always had a love-hate relationship with the native flora and fauna of the continent (6), either devaluing native plants, animals, and ecosystems, or launching into an “overcompensating patriotic strut about the Australian biota” (Robin 9). The colonising dynamic of early Australian society was built on the devaluation of animals such as the bilby. This was reflected in the introduction of feral animals by “acclimatisation societies” and the privileging of “pets” such as cats and dogs over native animals (Plumwood). Alfred Crosby has made the persuasive argument that the invasion of Australia, and other “neo-European” countries, was, necessarily, more-than-human. In his work, Ecological Imperialism, Crosby charts the historical partnership between human European colonisers in Indigenous lands and the “grunting, lowing, neighing, crowing, chirping, snarling, buzzing, self-replicating and world-altering avalanche” (194) of introduced life that they brought with them. In response to this “guilt by association” Australians have reversed the values in the dichotomous colonial dynamic to devalue the introduced and so “empower” the colonised native. In this new “anti-colonial” story, rabbits signify a wound of colonisation which has spread across and infected indigenous country. J. M. Arthur’s (130) analysis of language in relation to colonisation highlights some of the important lexical characteristics in the rabbit stories we now tell. He observes that the rabbits’ impact on the county is described using a vocabulary of contamination: “It is a ‘menace’, a ‘problem’, an ‘infestation’, a ‘nuisance’, a ‘plague’” (170). This narrative of disease encourages a redemptive violence against living rabbits to “cure” the rabbit problem in order to atone for human mistakes in a colonial past. Redemptive Violence in Action Rabbits in Australia have been subject to a wide range of eradication measures over the past century including shooting, the destruction of burrows, poisoning, ferreting, trapping, and the well-known rabbit proof fence in Western Australia. Particularly noteworthy in this slaughter has been the introduction of biological control measures with the release of the savage and painful disease Myxomatosis in late December 1950, followed by the release of the Calicivirus (Rabbit Haemorrhage Disease, or RHD) in 1996. As recently as March 2012 the New South Wales Department of Primary Industries announced a 1.5 million dollar program called “RHD Boost” which is attempting to develop a more effective biological control agent for rabbits who have become immune to the Calicivirus. In this perverse narrative, disease becomes a cure for the rabbit’s contamination of Australian environments. Calicivirus is highly infectious, spreads rapidly, and kills rabbits en masse. Following the release of Calicivirus in 1995 it killed 10 million rabbits in eight weeks (Ponsonby Veterinary Centre). While Calicivirus appears to be more humane than the earlier biological control, Myxomatosis, there are indications that it causes rabbits pain and stress. Victims are described as becoming very quiet, refusing to eat, straining for breath, losing coordination, becoming feverish, and excreting bloody nasal discharge (Heishman, 2011). Post-mortem dissection generally reveals a “pale and mottled liver, many small streaks or blotches on the lungs and an enlarged spleen... small thrombi or blood clots” (Coman 173). Public criticism of the cruel methods involved in killing rabbits is often assuaged with appeals to the greater good of the ecosystem. The Anti-Rabbit research foundation state on their Website, Rabbit-Free Australia, that: though killing rabbits may sound inhumane, wild rabbits are affecting the survival of native Australian plants and animals. It is our responsibility to control them. We brought the European rabbit here in the first place — they are an invasive pest. This assumption of personal and communal responsibility for the rabbit “problem” has a fundamental blind-spot. Arthur (130) observes that the progress of rabbits across the continent is often described as though they form a coordinated army: The rabbit extends its ‘dominion’, ‘dispossesses’ the indigenous bilby, causes sheep runs to be ‘abandoned’ and country ‘forfeited’, leaving the land in ‘ecological tatters’. While this language of battle pervades rabbit stories, humans rarely refer to themselves as invaders into Aboriginal lands. Arthur notes that, by taking responsibility for the rabbit’s introduction and eradication, the coloniser assumes an indigenous status as they defend the country against the exotic invader (134). The apprehension of moral responsibility can, in this sense, be understood as the assumption of settler indigeneity. This does not negate the fact that assuming human responsibility for the native environment can be an act of genuine care. In a country scarred by a history of ecocide, movements like the Easter Bilby campaign seek to rectify the negligent mistakes of the past. The problem is that reactive responses to the colonial devaluation of native life can be unproductive because they preserve the basic structure of the native/invasive dichotomy by simplistically reversing its values, and fail to respond to more complex ecological contexts and requirements (Plumwood). This is also socially problematic because the native/invasive divide of nonhuman life overlays more complex human politics of colonisation in Australia. The Native/Invasive Dualism The bilby is currently listed as an “endangered” species in Queensland and as “vulnerable” nationally. Bilbies once inhabited 70% of the Australian landscape, but now inhabit less than 15% of the country (Save the Bilby Fund). This dramatic reduction in bilby numbers has multiple causes, but the European rabbit has played a significant role in threatening the bilby species by competing for burrows and food. Other threats come from the predation of introduced species, such as feral cats and foxes, and the impact of farmed introduced species, such as sheep and cattle, which also destroy bilby habitats. Because the rabbit directly competes with the bilby for food and shelter in the Australian environment, the bilby can be classed as the underdog native, appealing to that larger Australian story about “the fair go”. It seems that the Easter bilby campaign is intended to level out the threat posed by the highly successful and adaptive rabbit through promoting the bilby in the “cultural selection” stakes. This involves encouraging bilby-love, while actively discouraging love and care for the introduced rabbits which threaten the bilby’s survival. On the Rabbit Free Australia Website, the campaign rationale to replace the Easter bunny with the Easter bilby claims that: Very young children are indoctrinated with the concept that bunnies are nice soft fluffy creatures whereas in reality they are Australia’s greatest environmental feral pest and cause enormous damage to the arid zone. In this statement the lived corporeal presence of individual rabbits is denied as the “soft, fluffy” body disappears behind the environmentally problematic species’ behaviour. The assertion that children are “indoctrinated” to find rabbits love-able, and that this conflicts with the “reality” of the rabbit as environmentally destructive, denies the complexity of the living animal and the multiple possible responses to it. That children find rabbits “fluffy” is not the result of pro-rabbit propaganda, but because rabbits are fluffy! That Rabbit Free Australia could construe this to be some kind of elaborate falsehood demonstrates the disappearance of the individual rabbit in the native/invasive tale of colonisation. Rabbit-Free Australia seeks to eradicate the animal not only from Australian ecosystems, but from the hearts and minds of children who are told to replace the rabbit with the more fitting native bilby. There is no acceptance here of the rabbit as a complex animal that evokes ambivalent responses, being both worthy of moral consideration, care and love, and also an introduced and environmentally destructive species. The native/invasive dualism is a subject of sustained critique in environmental philosophy because it depends on a disjunctive temporal division drawn at the point of European settlement—1788. Environmental philosopher Thom van Dooren points out that the divide between animals who belong and animals who should be eradicated is “fundamentally premised on the reification of a specific historical moment that ignores the changing and dynamic nature of ecologies” (11). Mark Davis et al. explain that the practical value of the native/invasive dichotomy in conservation programs is seriously diminished and in some cases is becoming counterproductive (153). They note that “classifying biota according to their adherence to cultural standards of belonging, citizenship, fair play and morality does not advance our understanding of ecology” (153). Instead, they promote a more inclusive approach to conservation which accepts non-native species as part of Australia’s “new nature” (Low). Recent research into wildlife conservation indicates a striking lack of evidence for the case that pest control protects native diversity (see Bergstromn et al., Davis et al., Ewel & Putz, Reddiex & Forsyth). The problematic justification of “killing for conservation” becomes untenable when conservation outcomes are fundamentally uncertain. The mass slaughter which rabbits have been subjected to in Australia has been enacted with the goal of fostering life. This pursuit of creation through destruction, of re-birth through violent death, enacts a disturbing twist where death comes to signal the presence of life. This means, perversely, that a rabbit’s dead body becomes a valuable sign of environmental health. Conservation researchers Ben Reddiex and David M. Forsyth observe that this leads to a situation where environmental managers are “more interested in estimating how many pests they killed rather than the status of biodiversity they claimed to be able to protect” (715). What Other Stories Can We Tell about the Rabbit? With an ecological narrative that is failing, producing damage and death instead of fostering love and life, we are left with the question—what other stories can we tell about the place of the European rabbit in the Australian environment? How can the meaning ecologies of media and culture work in harmony with an ecological consciousness that promotes compassion for nonhuman life? Ignoring the native/invasive distinction entirely is deeply problematic because it registers the ecological history of Australia as continuity, and fails to acknowledge the colonising impact of European settlement on the environment. At the same time, continually reinforcing that divide through pro-invasive or pro-native stories drastically simplifies complex and interconnected ecological systems. Instead of the unproductive native/invasive dualism, ecologists and philosophers alike are suggesting “reconciliatory” approaches to the inhabitants of our shared environments which emphasise ecology as relational rather than classificatory. Evolutionary ecologist Scott P. Carroll uses the term “conciliation biology” as an alternative to invasion biology which focuses on the eradication of invasive species. “Conciliation biology recognises that many non-native species are permanent, that outcomes of native-nonnative interactions will vary depending on the scale of assessment and the values assigned to the biotic system, and that many non-native species will perform positive functions in one or more contexts” (186). This hospitable approach aligns with what Michael Rosensweig has termed “reconciliation ecology”—the modification and diversification of anthropogenic habitats to harbour a wider variety of species (201). Professor of Ecology and Evolutionary Biology Mark Bekoff encourages a “compassionate conservation” which avoids the “numbers game” of species thinking where certain taxonomies are valued above others and promotes approaches which “respect all life; treat individuals with respect and dignity; and tread lightly when stepping into the lives of animals”(24). In a similar vein environmental philosopher Deborah Bird Rose offers the term “Eco-reconciliation”, to describe a mode of “living generously with others, singing up relationships so that we all flourish” (Wild Dog 59). It may be that the rabbit cannot live in harmony with the bilby, and in this situation I am unsure of what a conciliation approach to ecology might look like in terms of managing both of these competing species. But I am sure what it should not look like if we are to promote approaches to ecology and conservation which avoid the simplistic dualism of native/invasive. The devaluation of rabbit life to the point of moral inconsiderability is fundamentally unethical. By classifying certain lives as “inappropriate,” and therefore expendable, the process of rabbit slaughter is simply too easy. The idea that the rabbit should disappear is disturbing in its abstract approach to these living, sentient creatures who share with us both place and history. A dynamic understanding of ecology dissipates the notion of a whole or static “nature.” This means that there can be no simple or comprehensive directives for how humans should interact with their environments. One of the most insidious aspects of the native/invasive divide is the way it makes violent death appear inevitable, as though rabbits must be culled. This obscures the many complex and contingent choices which determine the fate of nonhuman life. Understanding the dynamism of ecology requires an acceptance that nature does not provide simple prescriptive responses to problems, and instead “people are forced to choose the kind of environment they want” (189) and then take actions to engender it. This involves difficult decisions, one of which is culling to maintain rabbit numbers and facilitate environmental resilience. Living within a world of “discordant harmonies”, as Daniel Botkin evocatively describes it, environmental decisions are necessarily complex. The entanglement of ecological systems demands that we reject simplistic dualisms which offer illusory absolution from the consequences of the difficult choices humans make about life, ecologies, and how to manage them. Ecological Remembrance The vision of a rabbit-free Australia is unrealistic. As organisation like the Anti-Rabbit Research Foundation pursue this future ideal, they eradicate rabbits from the present, and seek to remove them from the past by replacing them culturally with the more suitable bilby. Culled rabbits lie rotting en masse in fields, food for no one, and even their cultural impact in human society is sought to be annihilated and replaced with more appropriate native creatures. The rabbits’ deaths do not turn back to life in transformative and regenerative processes that are ecological and cultural, but rather that death becomes “an event with no future” (Rose, Wild Dog 25). This is true oblivion, as the rabbit is entirely removed from the world. In this paper I have made a case for the importance of stories in ecology. I have argued that the kinds of stories we tell about rabbits determines how we treat them, and so have positioned stories as an essential part of an ecological system which takes “cultural selection” seriously. In keeping with this emphasis on story I offer to the conciliation push in ecological thinking the term “ecological remembrance” to capture an ethic of sharing time while sharing space. This spatio-temporal hospitality is focused on maintaining heterogeneous memories and histories of all beings who have impacted on the environment. In Deborah Bird Rose’s terms this is a “recuperative work” which commits to direct dialogical engagement with the past that is embedded in the present (Wild Country 23). In this sense it is a form of recuperation that promotes temporal and ecological continuity. Eco-remembrance aligns with dynamic understandings of ecology because it is counter-linear. Instead of approaching the past as a static idyll, preserved and archived, ecological remembrance celebrates the past as an ongoing, affective presence which is lived and performed. Ecological remembrance, applied to the European rabbit in Australia, would involve rejecting attempts to extricate the rabbit from Australian environments and cultures. It would seek acceptance of the rabbit as part of Australia’s “new nature” (Low), and aim for recognition of the rabbit’s impact on human society as part of dynamic multi-species ecologies. In this sense ecological remembrance of the rabbit directly opposes the goal of the Foundation for Rabbit Free Australia to eradicate the European rabbit from Australian environment and culture. On the Rabbit Free Australia website, the section on biological controls states that “the point is not how many rabbits are killed, but how many are left behind”. The implication is that the millions upon millions of rabbit lives extinguished have vanished from the earth, and need not be remembered or considered. However, as Deborah Rose argues, “all deaths matter” (Wild Dog 21) and “no death is a mere death” (Wild Dog 22). Every single rabbit is an individual being with its own unique life. To deny this is tantamount to claiming that each rabbit that dies from shooting or poisoning is the same rabbit dying again and again. Rose has written that “death makes claims upon all of us” (Wild Dog 19). These are claims of ethics and compassion, a claim that “we look into the eyes of the dying and not flinch, that we reach out to hold and to help” (Wild Dog 20). This claim is a duty of remembrance, a duty to “bear witness” (Wiesel 160) to life and death. The Nobel Peace Prize winning author, Elie Wiesel, argued that memory is a reconciliatory force that creates bonds as mass annihilation seeks to destroy them. Memory ensures that no life becomes truly life-less as it wrests the victims of mass slaughter from “oblivion” and allows the dead to “vanquish death” (21). In a continent inhabited by dead rabbits—a community of the dead—remembering these lost individuals and their lost lives is an important task for making sure that no death is a mere death. An ethic of ecological remembrance follows this recuperative aim. References Arthur, Jay M. The Default Country: A Lexical Cartography of Twentieth-Century Australia. Sydney: UNSW Press, 2003. Bagust, Phil. “Cuddly Koalas, Beautiful Brumbies, Exotic Olives: Fighting for Media Selection in the Attention Economy.” “Imaging Natures”: University of Tasmania Conference Proceedings (2004). 25 April 2012 ‹www.utas.edu.au/arts/imaging/bagust.pdf› Bekoff, Marc. “First Do No Harm.” New Scientist (28 August 2010): 24 – 25. Bergstrom, Dana M., Arko Lucieer, Kate Kiefer, Jane Wasley, Lee Belbin, Tore K. Pederson, and Steven L. Chown. “Indirect Effects of Invasive Species Removal Devastate World Heritage Island.” Journal of Applied Ecology 46 (2009): 73– 81. Botkin, Daniel. B. Discordant Harmonies: A New Ecology for the Twenty-first Century. New York & Oxford: Oxford University Press, 1990. Carroll, Scott. P. “Conciliation Biology: The Eco-Evolutionary Management of Permanently Invaded Biotic Systems.” Evolutionary Applications 4.2 (2011): 184 – 99. Coman, Brian. Tooth and Nail: The Story of the Rabbit in Australia. Melbourne: The Text Publishing Company, 1999. Crosby, Alfred W. Ecological Imperialism: The Biological Expansion of Europe, 900 – 1900. Second Edition. Cambridge: Cambridge University Press, 2004. Davis, Mark., Matthew Chew, Richard Hobbs, Ariel Lugo, John Ewel, Geerat Vermeij, James Brown, Michael Rosenzweig, Mark Gardener, Scott Carroll, Ken Thompson, Steward Pickett, Juliet Stromberg, Peter Del Tredici, Katharine Suding, Joan Ehrenfield, J. Philip Grime, Joseph Mascaro and John Briggs. “Don’t Judge Species on their Origins.” Nature 474 (2011): 152 – 54. Ewel, John J. and Francis E. Putz. “A Place for Alien Species in Ecosystem Restoration.” Frontiers in Ecology and the Environment 2.7 (2004): 354-60. Forsyth, David M. and Ben Reddiex. “Control of Pest Mammals for Biodiversity Protection in Australia.” Wildlife Research 33 (2006): 711–17. Garnett, Ali, and Kaye Kessing. Easter Bilby. Department of Environment and Heritage: Kaye Kessing Productions, 2006. Heishman, Darice. “VHD Factsheet.” House Rabbit Network (2011). 15 June 2012 ‹http://www.rabbitnetwork.org/articles/vhd.shtml› Low, Tim. New Nature: Winners and Losers in Wild Australia. Melbourne: Penguin, 2002. Phillips, Sara. “How Eating Easter Chocolate Can Save Endangered Animals.” ABC Environment (1 April 2010). 15 June 2011 ‹http://www.abc.net.au/environment/articles/2010/04/01/2862039.htm› Plumwood, Val. “Decolonising Australian Gardens: Gardening and the Ethics of Place.” Australian Humanities Review 36 (2005). 15 June 2012 ‹http://www.australianhumanitiesreview.org/archive/Issue-July-2005/09Plumwood.html› Ponsonby Veterinary Centre. “Rabbit Viral Hemorrhagic Disease (VHD).” Small Pets. 26 May 2012 ‹http://www.petvet.co.nz/small_pets.cfm?content_id=85› Robin, Libby. How a Continent Created a Nation. Sydney: UNSW Press, 2007. Rose, Deborah Bird. Reports From a Wild Country: Ethics for Decolonisation. Sydney: University of New South Wales Press, 2004. ——-. Wild Dog Dreaming: Love and Extinction. Charlottesville and London: University of Virginia Press, 2011. Rosenzweig, Michael. L. “Reconciliation Ecology and the Future of Species Diversity.” Oryx 37.2 (2003): 194 – 205. Save the Bilby Fund. “Bilby Fact Sheet.” Easterbilby.com.au (2003). 26 May 2012 ‹http://www.easterbilby.com.au/Project_material/factsheet.asp› Van Dooren, Thom. “Invasive Species in Penguin Worlds: An Ethical Taxonomy of Killing for Conservation.” Conservation and Society 9.4 (2011): 286 – 98. Wiesel, Elie. From the Kingdom of Memory. New York: Summit Books, 1990.

Property as both an idea and a practice has been interpreted through the prism of a liberal, law and economics paradigm since at least the 18th century. This dominant (and domineering) perspective stresses the primacy of individualism, the power of exclusion, and the values of private commodity. By contrast, concepts of property that evolved out of the counterculture of the 1960s and early 1970s challenged this hegemony. Countercultural, or Aquarian, ideas of property stressed pre-liberal, long forgotten property norms such as sociability, community, inclusion and personhood, and contested a private uniformity that seemed “totalizing and universalizing” (Blomley, Unsettling 102). This paper situates what it terms “Aquarian property” in the context of emergent property theory in the 1960s and 1970s, and the propertied practices these new theories engendered. Importantly, this paper also grounds Aquarian ideas of property to location. As legal geographers observe, the law inexorably occurs in place as well as time. “Nearly every aspect of law is located, takes place, is in motion, or has some spatial frame of reference” (Braverman et al. 1). Property’s radical yet simultaneously ancient alter-narrative found fertile soil where the countercultural experiment flourished. In Australia, one such place was the green, sub-tropical landscape of the New South Wales Northern Rivers, home of the 1973 Australian Union of Student’s Aquarius Festival at Nimbin. The Counterculture and Property Theory Well before the “Age of Aquarius” entered western youth consciousness (Munro-Clark 56), and 19 years before the Nimbin Aquarius Festival, US legal scholar Felix Cohen defined property in seminally private and exclusionary terms. To the world: Keep off X unless you have my permission, which I may grant or withhold.Signed: Private citizenEndorsed: The state. (374) Cohen’s formula was private property at its 1950s apogee, an unambiguous expression of its centrality to post-war materialism. William Blackstone’s famous trope of property as “that sole and despotic dominion” had become self-fulfilling (Rose, Canons). Why had this occurred? What had made property so narrow and instrumentalist to a private end? Several property theorists identify the enclosure period in the 17th and 18th centuries as seminal to this change (Blomley, Law; Graham). The enclosures, and their discourse of improvement and modernity, saw ancient common rights swept away in favour of the liberal private right. Property diversity was supplanted by monotony, group rights by the individual, and inclusion by exclusion. Common property rights were rights of shared use, traditionally agrarian incidents enjoyed through community membership. However, for the proponents of enclosure, common rights stood in the way of progress. Thus, what was once a vested right (such as the common right to glean) became a “mere practice”, condemned by its “universal promiscuity” and perceptions of vagrancy (Buck 17-8). What was once sited to context, to village and parish, evolved into abstraction. And what had meaning for person and place, “a sense of self; […] a part of a tribe’ (Neeson 180), became a tradable commodity, detached and indifferent to the consequences of its adverse use (Leopold). These were the transformed ideas of property exported to so-called “settler” societies, where colonialists demanded the secure property rights denied to them at home. In the common law tradition, a very modern yet selective amnesia took hold, a collective forgetting of property’s shared and sociable past (McLaren). Yet, property as commodity proved to be a narrow, one-sided account of property, an unsatisfactory “half right” explanation (Alexander 2) that omits inconvenient links between ownership on the one hand, and self and place on the other. Pioneering US conservationist Aldo Leopold detected as much a few years before Felix Cohen’s defining statement of private dominance. In Leopold’s iconic A Sand County Almanac, he wrote presciently of the curious phenomenon of hardheaded farmers replanting selected paddocks with native wildflowers. As if foreseeing what the next few decades may bring, Leopold describes a growing resistance to the dominant property paradigm: I call it Revolt – revolt against the tedium of the merely economic attitude towards land. We assume that because we had to subjugate the land to live on it, the best farm is therefore the one most completely tamed. These […] farmers have learned from experience that the wholly tamed farm offers not only a slender livelihood but a constricted life. (188)By the early 1960s, frustrations over the constrictions of post-war life were given voice in dissenting property literature. Affirming that property is a social institution, emerging ideas of property conformed to the contours of changing values (Singer), and the countercultural zeitgeist sweeping America’s universities (Miller). Thus, in 1964, Charles Reich saw property as the vanguard for a new civic compact, an ambitious “New Property” that would transform “government largess” into a property right to address social inequity. For Joseph Sax, property scholar and author of a groundbreaking citizen’s manifesto, the assertion of public property rights were critical to the protection of the environment (174). And in 1972, to Christopher Stone, it seemed a natural property incident that trees should enjoy equivalent standing to legal persons. In an age when “progress” was measured by the installation of plastic trees in Los Angeles median strips (Tribe), jurists aspired to new ideas of property with social justice and environmental resonance. Theirs was a scholarly “Revolt” against the tedium of property as commodity, an act of resistance to the centuries-old conformity of the enclosures (Blomley, Law). Aquarian Theory in Propertied Practice Imagining new property ideas in theory yielded in practice a diverse Aquarian tenure. In the emerging communes and intentional communities of the late 1960s and early 1970s, common property norms were unwittingly absorbed into their ethos and legal structure (Zablocki; Page). As a “way out of a dead-end future” (Smith and Crossley), a generation of young, mostly university-educated people sought new ways to relate to land. Yet, as Benjamin Zablocki observed at the time, “there is surprisingly little awareness among present-day communitarians of their historical forebears” (43). The alchemy that was property and the counterculture was given form and substance by place, time, geography, climate, culture, and social history. Unlike the dominant private paradigm that was placeless and universal, the tenurial experiments of the counter-culture were contextual and diverse. Hence, to generalise is to invite the problematic. Nonetheless, three broad themes of Aquarian property are discernible. First, property ceased being a vehicle for the acquisition of private wealth; rather it invested self-meaning within a communitarian context, “a sense of self [as] a part of a tribe.” Second, the “back to the land” movement signified a return to the country, an interregnum in the otherwise unidirectional post-enclosure drift to the city. Third, Aquarian property was premised on obligation, recognising that ownership was more than a bundle of autonomous rights, but rights imbricated with a corresponding duty to land health. Like common property and its practices of sustained yield, Aquarian owners were environmental stewards, with inter-connected responsibilities to others and the earth (Page). The counterculture was a journey in self-fulfillment, a search for personal identity amidst the empowerment of community. Property’s role in the counterculture was to affirm the under-regarded notion of property as propriety; where ownership fostered well lived and capacious lives in flourishing communities (Alexander). As Margaret Munro-Clark observed of the early 1970s, “the enrichment of individual identity or selfhood [is] the distinguishing mark of the current wave of communitarianism” (33). Or, as another 1970s settler remarked twenty years later, “our ownership means that we can’t liquefy our assets and move on with any appreciable amount of capital. This arrangement has many advantages; we don’t waste time wondering if we would be better off living somewhere else, so we have commitment to place and community” (Metcalf 52). In personhood terms, property became “who we are, how we live” (Lismore Regional Gallery), not a measure of commoditised worth. Personhood also took legal form, manifested in early title-holding structures, where consensus-based co-operatives (in which capital gain was precluded) were favoured ideologically over the capitalist, majority-rules corporation (Munro-Clark). As noted, Aquarian property was also predominantly rural. For many communitarians, the way out of a soulless urban life was to abandon its difficulties for the yearnings of a simpler rural idyll (Smith and Crossley). The 1970s saw an extraordinary return to the physicality of land, measured by a willingness to get “earth under the nails” (Farran). In Australia, communities proliferated on the NSW Northern Rivers, in Western Australia’s southwest, and in the rural hinterlands behind Queensland’s Sunshine Coast and Cairns. In New Zealand, intentional communities appeared on the rural Coromandel Peninsula, east of Auckland, and in the Golden Bay region on the remote northwestern tip of the South Island. In all these localities, land was plentiful, the climate seemed sunny, and the landscape soulful. Aquarians “bought cheap land in beautiful places in which to opt out and live a simpler life [...] in remote backwaters, up mountains, in steep valleys, or on the shorelines of wild coastal districts” (Sargisson and Sargent 117). Their “hard won freedom” was to escape from city life, suffused by a belief that “the city is hardly needed, life should spring out of the country” (Jones and Baker 5). Aquarian property likewise instilled environmental ethics into the notion of land ownership. Michael Metzger, writing in 1975 in the barely minted Ecology Law Quarterly, observed that humankind had forgotten three basic ecological laws, that “everything is connected to everything else”, that “everything must go somewhere”, and that “nature knows best” (797). With an ever-increasing focus on abstraction, the language of private property: enabled us to create separate realities, and to remove ourselves from the natural world in which we live to a cerebral world of our own creation. When we act in accord with our artificial world, the disastrous impact of our fantasies upon the natural world in which we live is ignored. (796)By contrast, Aquarian property was intrinsically contextual. It revolved around the owner as environmental steward, whose duty it was “to repair the ravages of previous land use battles, and to live in accord with the natural environment” (Aquarian Archives). Reflecting ancient common rights, Aquarian property rights internalised norms of prudence, proportionality and moderation of resource use (Rose, Futures). Simply, an ecological view of land ownership was necessary for survival. As Dr. Moss Cass, the Federal environment minister wrote in the preface to The Way Out: Radical Alternatives in Australia, ‘”there is a common conviction that something is rotten at the core of conventional human existence.” Across the Tasman, the sense of latent environmental crisis was equally palpable, “we are surrounded by glistening surfaces and rotten centres” (Jones and Baker 5). Property and Countercultural Place and Time In the emerging discipline of legal geography, the law and its institutions (such as property) are explained through the prism of spatiotemporal context. What even more recent law and geography scholarship argues is that space is privileged as “theoretically interesting” while “temporality is reduced to empirical history” (Braverman et al. 53). This part seeks to consider the intersection of property, the counterculture, and time and place without privileging either the spatial or temporal dimensions. It considers simply the place of Nimbin, New South Wales, in early May 1973, and how property conformed to the exigencies of both. Legal geographers also see property through the theory of performance. Through this view, property is a “relational effect, not a prior ground, that is brought into being by the very act of performance” (Blomley, Performing 13). In other words, doing does not merely describe or represent property, but it enacts, such that property becomes a reality through its performance. In short, property is because it does. Performance theory is liberating (Page et al) because it concentrates not on property’s arcane rules and doctrines, nor on the legal geographer’s alleged privileging of place over time, but on its simple doing. Thus, Nicholas Blomley sees private property as a series of constant and reiterative performances: paying rates, building fences, registering titles, and so on. Adopting this approach, Aquarian property is described as a series of performances, seen through the prism of the legal practitioner, and its countercultural participants. The intersection of counterculture and property law implicated my family in its performative narrative. My father had been a solicitor in Nimbin since 1948; his modest legal practice was conducted from the side annexe of the School of Arts. Equipped with a battered leather briefcase and a trusty portable typewriter, like clockwork, he drove the 20 miles from Lismore to Nimbin every Saturday morning. I often accompanied him on his weekly visits. Forty-one years ago, in early May 1973, we drove into town to an extraordinary sight. Seen through ten-year old eyes, surreal scenes of energy, colour, and longhaired, bare-footed young people remain vivid. At almost the exact halfway point in my father’s legal career, new ways of thinking about property rushed headlong and irrevocably into his working life. After May 1973, dinnertime conversations became very different. Gone was the mundane monopoly of mortgages, subdivisions, and cottage conveyancing. The topics now ranged to hippies, communes, co-operatives and shared ownerships. Property was no longer a dull transactional monochrome, a lifeless file bound in pink legal tape. It became an idea replete with diversity and innovation, a concept populated with interesting characters and entertaining, often quirky stories. If property is a narrative (Rose, Persuasion), then the micro-story of property on the NSW Northern Rivers became infinitely more compelling and interesting in the years after Aquarius. For the practitioner, Aquarian property involved new practices and skills: the registration of co-operatives, the drafting of shareholder deeds that regulated the use of common lands, the settling of idealistic trusts, and the ever-increasing frequency of visits to the Nimbin School of Arts every working Saturday. For the 1970s settler in Nimbin, performing Aquarian property took more direct and lived forms. It may have started by reading the open letter that festival co-organiser Graeme Dunstan wrote to the Federal Minister for Urban Affairs, Tom Uren, inviting him to Nimbin as a “holiday rather than a political duty”, and seeking his support for “a community group of 100-200 people to hold a lease dedicated to building a self-sufficient community [...] whose central design principles are creative living and ecological survival” (1). It lay in the performances at the Festival’s Learning Exchange, where ideas of philosophy, organic farming, alternative technology, and law reform were debated in free and unstructured form, the key topics of the latter being abortion and land. And as the Festival came to its conclusion, it was the gathering at the showground, titled “After Nimbin What?—How will the social and environmental experiment at Nimbin effect the setting up of alternative communities, not only in the North Coast, but generally in Australia” (Richmond River Historical Society). In the days and months after Aquarius, it was the founding of new communities such as Co-ordination Co-operative at Tuntable Creek, described by co-founder Terry McGee in 1973 as “a radical experiment in a new way of life. The people who join us […] have to be prepared to jump off the cliff with the certainty that when they get to the bottom, they will be all right” (Munro-Clark 126; Cock 121). The image of jumping off a cliff is a metaphorical performance that supposes a leap into the unknown. While orthodox concepts of property in land were left behind, discarded at the top, the Aquarian leap was not so much into the unknown, but the long forgotten. The success of those communities that survived lay in the innovative and adaptive ways in which common forms of property fitted into registered land title, a system otherwise premised on individual ownership. Achieved through the use of outside private shells—title-holding co-operatives or companies (Page)—inside the shell, the norms and practices of common property were inclusively facilitated and performed (McLaren; Rose, Futures). In 2014, the performance of Aquarian property endures, in the dozens of intentional communities in the Nimbin environs that remain a witness to the zeal and spirit of the times and its countercultural ideals. Conclusion The Aquarian idea of property had profound meaning for self, community, and the environment. It was simultaneously new and old, radical as well as ancient. It re-invented a pre-liberal, pre-enclosure idea of property. For property theory, its legacy is its imaginings of diversity, the idea that property can take pluralistic forms and assert multiple values, a defiant challenge to the dominant paradigm. Aquarian property offers rich pickings compared to the pauperised private monotone. Over 41 years ago, in the legal geography that was Nimbin, New South Wales, the imaginings of property escaped the conformity of enclosure. The Aquarian age represented a moment in “thickened time” (Braverman et al 53), when dissenting theory became practice, and the idea of property indelibly changed for a handful of serendipitous actors, the unscripted performers of a countercultural narrative faithful to its time and place. References Alexander, Gregory. Commodity & Propriety: Competing Visions of Property in American Legal Thought 1776-1970. Chicago: U of Chicago P, 1999. Aquarian Archives. "Report into Facilitation of a Rural Intentional Community." Lismore, NSW: Southern Cross University. Blomley, Nicholas. Law, Space, and the Geographies of Power. New York: Guildford Press, 1994. Blomley, Nicholas. Unsettling the City: Urban Land and the Politics of Property. New York: Routledge, 2004. 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