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1
Reside, April E., Jutta Beher, Anita J. Cosgrove, Megan C. Evans, Leonie Seabrook, Jennifer L. Silcock, Amelia S. Wenger, and Martine Maron. "Ecological consequences of land clearing and policy reform in Queensland." Pacific Conservation Biology 23, no. 3 (2017): 219. http://dx.doi.org/10.1071/pc17001.
Повний текст джерелаАнотація:
Land clearing threatens biodiversity, impairs the functioning of terrestrial, freshwater, and marine ecosystems, and is a key contributor to human-induced climate change. The rates of land clearing in the State of Queensland, Australia, are at globally significant levels, and have been the subject of intense and polarised political debate. In 2016, a legislative bill that aimed to restore stronger controls over land clearing failed to pass in the Queensland Parliament, despite the clear scientific basis for policy reform. Here, we provide a short history of the recent policy debate over land clearing in Queensland, in the context of its global and national ecological significance. Land clearing affects regional climates, leading to hotter, drier climates that will impact on the Queensland economy and local communities. Loss of habitat from land clearing is a key threatening process for many endangered animals and plants. Runoff from land clearing results in sediment and nutrient enrichment, which threatens the health of the Great Barrier Reef. Australia has made national and international commitments to conserve biodiversity and reduce our greenhouse gas emissions, but current land clearing policies are not consistent with these commitments. Stronger regulation is needed to reduce vegetation loss, such as target-based regulation, which sets a cap on land clearing and could effectively halt vegetation loss over the long term. Lasting policy reform is required, and we recommend an effective policy mix that restricts clearing, provides economic opportunities for vegetation retention, and informs the Australian community about the value of native vegetation.
2
Nelson, Rebecca. "Regulating Hidden Risks to Conservation Lands in Resource Rich Areas." University of Queensland Law Journal 40, no. 3 (January 23, 2022): 491–530. http://dx.doi.org/10.38127/uqlj.v40i3.6217.
Повний текст джерелаАнотація:
Australia leads the world in formally dedicating private land to environmental conservation, helping governments protect critical biodiversity without straining the public purse. In Queensland, the booming resources sector threatens this biodiversity protection, even beyond landholders’ well-recognised lack of veto power over mining approvals on their land. Three structural legal biases increase this vulnerability. To differing degrees, Queensland’s laws assume that mining affects only land under or adjoining mining tenures, overlooking scientifically likely longer-distance impacts (‘boundary bias’); they emphasise protecting built and commercial infrastructure over ecological assets, overlooking significant investment in species and ecosystems (‘infrastructure bias’); and they allow consideration of proposed mining in isolation, without considering cumulative impacts on ecological assets (‘singularity bias’). Fortunately, Queensland law and policy precedents suggest potential corrective reforms.
3
Laurent, Nathan, and Lee Duffield. "Queensland's broad-scale land-clearing policy debate, 1998–2006: An analysis of evidence-based arguments in news media content." Queensland Review 25, no. 1 (June 2018): 70–88. http://dx.doi.org/10.1017/qre.2018.8.
Повний текст джерелаАнотація:
AbstractThis article outlines the methodology and key findings of a media content analysis of news reporting in the Courier-Mail and Queensland Country Life on the issue of broad-scale land-clearing (BSLC) in Queensland during the period 1998–2006. The case study identifies and examines evidence-based arguments made by stakeholders in the public policy debate surrounding BSLC, including elected officials and judges, interest groups, government agencies, scientists, business owners and individuals, such as academics. In both newspapers, it was noted that throughout the period under review, arguments made on environmental grounds in favour of the policy goal of maximum immediate conservation tended to be concerned with establishing an accurate definition of the BSLC problem. However, reporting of arguments made on political and economic grounds reflected stark differences between the two newspapers. The findings of this study support observations that some participants in a contest over new policy may dispute (persistently, and regardless of previous developments) the validity of: (1) definitions of a problem; (2) proposed policy solutions; (3) matters of detail or technical application; and (4) the enactment and implementation of legislation.
4
Cotter, John. "Projects and the community—coexistence in practice." APPEA Journal 54, no. 2 (2014): 478. http://dx.doi.org/10.1071/aj13051.
Повний текст джерелаАнотація:
Strong domestic and global demand for energy will continue to drive further gas exploration and development across Australia over coming years. From Queensland’s onshore gas industry experience the key foundation stones that have helped to build community trust have included: clear and unambiguous industry policy for resources and agriculture; science based approach to managing and monitoring groundwater; fair and balanced approach to land access; greater transparency on industry data and activities; investment in long term community infrastructure such as roads and telecommunications; and genuine opportunities for local businesses to grow and succeed. Queensland has this year also introduced a new regional planning framework that seeks to control what is appropriate development in areas of agricultural and environmental significance. The new approach gives landholders and communities a greater say upfront on how onshore gas and resource developments can occur. As other East Coast States grapple to establish their own onshore gas industry, there is still much more to be done in Queensland as the major CSG-LNG export projects move from construction to operation and ongoing gas well development programs are rolled out into new areas and communities. In addition, exploration by the emerging shale gas industry is bringing similar community engagement challenges to other parts of the Queensland. Formally established as an independent statutory body less than 12 months ago, the GasFields Commission Queensland seeks to manage and oversee the relationship between landholders, regional communities and the onshore gas industry in Queensland. It has and will continue to play an important role in helping identify and address community expectations about how the onshore gas industry develops and evolves.
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Bowen, M. K., and F. Chudleigh. "Grazing pressure, land condition, productivity and profitability of beef cattle grazing buffel grass pastures in the subtropics of Australia: a modelling approach." Animal Production Science 58, no. 8 (2018): 1451. http://dx.doi.org/10.1071/an17780.
Повний текст джерелаАнотація:
There is widespread evidence that beef cattle land managers in Queensland are using stocking rates for perennial pastures that are substantially higher than recommended guidelines, and some indication that these decisions are motivated by perceived financial and economic benefits. Considerable effort has been, and is currently being, applied by public-sector organisations to encourage producers to reduce grazing pressure from beef cattle across Queensland’s pastoral lands. A better understanding of the relationships among stocking rate, land condition and profitability of beef-grazing enterprises is imperative to better inform cattle producers and policy makers. The present study assessed the effect of grazing pressure and land condition on the productivity and profitability of a steer-turnover enterprise utilising buffel grass (Cenchrus ciliaris) pastures in central Queensland. A property-level, regionally relevant herd model was used to determine whole-of-business productivity and profitability over a 30-year investment period. Growth paths for steers from weaning to marketing were developed for 16 scenarios encompassing a range of pasture-utilisation rates (30%, 35% and 50% of annual biomass growth), land condition (A, B and C) and market targets (feedlot entry at 474 kg or slaughter at 605 kg). The economic effect of each scenario was assessed by comparison to a base scenario of 30% pasture utilisation and turn-off of slaughter steers. Our analyses demonstrated a large economic advantage from increasing grazing pressure above 30% utilisation for buffel grass pastures, even with assumptions of declining land condition and animal performance. For instance, producing slaughter steers under a 50% pasture-utilisation regime with a continuous decline in land condition from A to C (and, hence, productivity) over Years 10–30 was AU$21 772/annum more profitable than was a 30% pasture-utilisation strategy, which is widely recommended as closer to a long-term, safe utilisation rate. The present research has provided insights into the relationship between grazing pressure and economic returns of beef producers over the medium term. However, it should be considered as a scoping study due to the paucity of data for effects of utilisation rate on the productivity of buffel grass pastures and, hence, on land-condition rating. Further research is required to better understand the effects of utilisation rate of buffel grass, and other sown pasture grass and legume species, on plant biomass production, plant-diet quality for cattle, land-condition decline and cattle productivity.
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Thorburn, P. J., I. J. Gordon, and S. McIntyre. "Soil and water salinity in Queensland: the prospect of ecological sustainability through the implementation of land clearing policy." Rangeland Journal 24, no. 1 (2002): 133. http://dx.doi.org/10.1071/rj02007.
Повний текст джерелаАнотація:
In Queensland, legislation has recently been enacted that outlines minimum standards for the retention of native vegetation in bioregions and prescribes Performance Requirements for the maintenance of biodiversity and ecological processes, and the prevention of land degradation. It also details Acceptable Solutions to satisfy the Performance Requirements. It this paper we analyse the links between science and action to determine whether the legislation and associated policy are likely to lead to sound management decisions being made for prevention of land and water salinity. We also compared the requirements for biodiversity protection relative to those for salinity control. For salinity (and biodiversity) the minimum standards and Acceptable Solutions in the legislation have a sound technical basis. The main challenge in implementing the salinity Performance Requirements will be provision of information required to assess salinity risk at appropriate scales. This information is: (1) salinity hazard assessment at catchment/regional scale planning scale; (2) technical information to support a sub-catchment scale implementation; (3) guidelines, procedures and local expertise for interpretation of salinity hazard at the property scale. In the process of assessing clearing applications there is no formal role for planners or decision makers at the sub-catchment level who could play an important role in coordinating information gathering for land managers developing clearing applications. There are also limited pathways for accessing relevant scientific information and expertise at an appropriate level to provide support for land managers. We suggest that this situation is likely to limit the successful implementation of the policy for preventing land and water salinity. The minimum standard of 30% retained vegetation would provide similar protection for biodiversity and salinity control at the bioregional level. In smaller areas (e.g. an individual property) however, there could be contrasting requirements for the retention of vegetation.
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Walter, A. C., and C. J. Jones. "ENVIRONMENTAL REGULATION OF THE UPSTREAM GAS INDUSTRY IN QUEENSLAND: A NEW APPROACH." APPEA Journal 38, no. 2 (1998): 160. http://dx.doi.org/10.1071/aj97089.
Повний текст джерелаАнотація:
The environmental regulation of the upstream gas industry in Queensland is based on the principles of ecologically sustainable development. There is an increasing emphasis on meeting the expectations of the general community with respect to impact assessment, the environmental performance of the industry and the ability of government to provide effective regulation. In Australian States, regulation of the industry is generally characterised by a combination of industry self-regulation and government licensing and co-regulation policies.Environmental administration and regulation in Queensland, that is, impact assessment, planning and monitoring of performance, is undertaken by the Department of Mines and Energy, primarily through Regional Offices. Direction is provided principally by Department policy and the Environmental Protection Act.Case studies are presented which illustrate the impact assessment processes for three different types of gas development projects: gas field development in southwest Queensland; construction of a gas pipeline; and development of a coal seam methane project.The Queensland Government is currently developing an Environmental Protection Policy for the upstream petroleum industry (the EPP (Petroleum)). The process of developing the EPP has involved considerable community and stakeholder input to encourage acceptance of the Policy by all parties. The process has identified several key issues for industry including: the need for multiple land use; the incremental nature of petroleum development (including the gas industry); the need to strengthen the impact assessment process; the need for an integrated, single agency regulatory regime; the need for greater accountability of both industry and government; and the need for adequate resourcing of environmental regulation.A possible new regulatory regime for the industry in Queensland, based on the co-regulation model, may include a two-tier system of impact assessment and a combination of compliance for operations with Codes of Practice or a project specific Environmental Management Plan and licences for emissions and certain high impact activities.The administrative framework would be provided by the Petroleum Act which is currently undergoing a major review.
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Finch, N. A., and G. S. Baxter. "Oh deer, what can the matter be? Landholder attitudes to deer management in Queensland." Wildlife Research 34, no. 3 (2007): 211. http://dx.doi.org/10.1071/wr06002.
Повний текст джерелаАнотація:
Deer are not native to Australia but have been present in the country for more than 150 years. For most of that time they have not been regarded as either an agricultural or environmental pest, but in the last few years there have been calls for their numbers to be reduced. Four species of deer can be found in well established populations in Queensland, mostly occurring on private land. Hence the effectiveness of any management of deer as pests will be heavily influenced by the actions of the land owners. This paper reports on a survey of the attitudes of landholders towards deer on their properties. A total of 2621 surveys was mailed to landowners and managers in regions known to support wild deer in Queensland. Of the 28.3% of surveys returned, over 75% of respondents conducted some form of primary production on their land and 65% of these had deer on their properties at least some of the time. Responses to questions were mostly uniform throughout the state, with over 50% of respondents wanting the deer population to stay at current levels or increase. Only 5% of respondents supported poisoning as a management strategy, with 17% supporting trapping. Recreational hunting and game-meat harvesting were favoured management options, with 42% and 51% support respectively. Only 25% of respondents thought wild deer caused environmental damage and 30% thought wild deer caused agricultural damage, with most associating wild deer as a less significant pest than those species already declared under state legislation. Of those surveyed, 56% agreed with the statement ‘It is important to maintain wild deer populations for future generations to enjoy’. The spread of deer in Australia is of increasing concern to ecologists, and there have been calls for action to reduce their numbers on private and public land. The results of this survey imply that a significant proportion of Queensland landholders would resist legislation aimed at managing deer as a pest in areas with long-established wild deer populations.
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Osunkoya, Olusegun O., Claire Lock, Joshua C. Buru, Brad Gray, and Moya Calvert. "Spatial extent of invasiveness and invasion stage categorisation of established weeds of Queensland, Australia." Australian Journal of Botany 68, no. 8 (2020): 557. http://dx.doi.org/10.1071/bt20066.
Повний текст джерелаАнотація:
The risk posed by invasive alien species is determined primarily by two factors: distribution (occupancy) and abundance (density). However, most ecological studies use distribution data for monitoring and assessment programs, but few incorporate abundance data due to financial and logistical constraints. Failure to take into account invaders’ abundance may lead to imprecise pest risk assessments. Since 2003 as part of the Annual Pest Distribution Survey (APDS) exercise in the state of Queensland, Australia, government biosecurity officials have collected data on distribution and abundance of more than 100 established and emerging weeds. This data acquisition was done at spatial grid sizes of 17–50 × 17–50 km and across a very broad and varied geographical land area of ~2 × 106 km2. The datasets provide an opportunity to compare weed dynamics at large-medium spatial scales. Analysis of the APDS datasets indicated that weed distributions were highest in regions along the southern and central, coastal parts of Queensland, and decreased in the less populated inland (i.e. western) and northern parts of the state. Weed abundance showed no discernible landscape or regional trends. Positive distribution–abundance relationships were also detected at multiple spatial scales. Using both traits of weed abundance and distribution, we derived a measure of invasion severity, and constructed, for several (64) weed species, ‘space-for-time’ invasion curves. State-wide and in each of Queensland’s 10 regions, we also categorised the invasion stages of these weeds. At the grassroots of local government area or regional levels, the derived invasion curves and stage categories can provide policy direction for long-term management planning of Queensland’s priority weeds.
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Karfs, R. A., B. N. Abbott, P. F. Scarth, and J. F. Wallace. "Land condition monitoring information for reef catchments: a new era." Rangeland Journal 31, no. 1 (2009): 69. http://dx.doi.org/10.1071/rj08060.
Повний текст джерелаАнотація:
Land condition monitoring information is required for the strategic management of grazing land and for a better understanding of ecosystem processes. Yet, for policy makers and those land managers whose properties are situated within north-eastern Australia’s vast Great Barrier Reef catchments, there has been a general lack of geospatial land condition monitoring information. This paper provides an overview of integrated land monitoring activity in rangeland areas of two major Reef catchments in Queensland: the Burdekin and Fitzroy regions. The project aims were to assemble land condition monitoring datasets that would assist grazing land management and support decision-makers investing public funds; and deliver these data to natural resource management (NRM) community groups, which had been given increased responsibility for delivering local environmental outcomes. We describe the rationale and processes used to produce new land condition monitoring datasets derived from remotely sensed Landsat thematic mapper (TM) and high resolution SPOT 5 satellite imagery and from rapid land condition ground assessment. Specific products include subcatchment groundcover change maps, regional mapping of indicative very poor land condition, and stratified land condition site summaries. Their application, integration, and limitations are discussed. The major innovation is a better understanding of NRM issues with respect to land condition across vast regional areas, and the effective transfer of decision-making capacity to the local level. Likewise, with an increased ability to address policy questions from an evidence-based position, combined with increased cooperation between community, industry and all levels of government, a new era has emerged for decision-makers in rangeland management.
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Hill, GJE, A. Barnes, and GR Wilson. "The Use of Wheat Crops by Grey Kangaroos, Macropus-Giganteus, in Southern Queensland." Wildlife Research 15, no. 2 (1988): 111. http://dx.doi.org/10.1071/wr9880111.
Повний текст джерелаАнотація:
Aerial surveys of eastern grey kangaroos, Macropus giganteus, were conducted over the western edge of the wheat belt of southern Queensland in two wet years (1983 and 1984) and one year of average rainfall (1985). Because most kangaroos moved rapidly off crops shortly after dawn and returned shortly before dusk, flights within 15 min of dawn and dusk provided the best indicators of kangaroo crop usage. Very low densities were observed on mature crops in all years and on immature crops in the two wetter years. In July 1985, which was drier, a density of 11 kangaroos km-2 was recorded on immature crops. This density was comparable with that for all uncultivated land in the surveyed area. Close to undeveloped land, densities of 14-17 kangaroos km-2 were observed on crops.
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Melville, Jane. "Conservation genetics of eastern Australian herpetofauna in a rapidly changing landscape: a perspective on conservation management and policy implementation." Pacific Conservation Biology 24, no. 3 (2018): 310. http://dx.doi.org/10.1071/pc18017.
Повний текст джерелаАнотація:
Over the last 200 years Australia has seen wide-scale habitat losses and land-clearing but in the last two decades the rate of loss has been accelerating dramatically, with intensification of land clearing and unprecedented urban growth around most of our major cities. It is within this framework of such rapid change that I have been undertaking conservation genetic research of lizards and frogs over the last 15 years. Here I reflect on the impacts of two rapidly changing landscapes that I have documented through my research. First, the profound impact of land clearing and shifting agricultural practices from mixed-cropping farms to vast broadacre monocultures on the grassland earless dragons of the Condamine River floodplains in south-eastern Queensland. Second, the rapid expansion of the Melbourne urban growth boundaries and how planning processes can impact the future survival of lizard and frog species within an urban environment. Both these cases highlight the impacts of rapid landscape change and emphasise the need for appropriate regulation and planning. Recommendations to slow the detrimental decline and potential extinction of these species include tighter land-clearing regulations and compliance monitoring, plus funding and integration of high-quality research into planning policy at early strategic stages. However, it is also vital that as conservation researchers we effectively communicate to the wider community our knowledge of the impacts that these landscape changes are having on our native flora and fauna.
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Passmore, JGI, and CG Brown. "Property Size and Rangeland Degradation in the Queensland Mulga Rangelands." Rangeland Journal 14, no. 1 (1992): 9. http://dx.doi.org/10.1071/rj9920009.
Повний текст джерелаАнотація:
Small property size is often cited as one of the major causes of rangeland degradation in Australia. However, there is some conjecture as to the importance of this effect and the process by which small property sizes lead to rangeland degradation. Relatively little empirical analysis of these issues has been undertaken, especially in a dynamic context which is all important in the case of rangeland degradation. Regression and dynamic programming techniques are employed in this study to investigate and measure the impact of property sizes on the use and state of one of Australia's most important rangelands, the Queensland mulga rangeland. Regression analysis of cross sectional data reveals significant correlations between property size, stocking rate and degradation. These correlations are confirmed in a normative stochastic dynamic programming model which demonstrates that it is economically optimal for graziers managing smaller properties to adopt higher stocking rates. For these graziers, the longterm costs of land degradation are exceeded by short-term financial benefits of heavier stocking. Thus government policy aimed at arresting the serious degradation occurring in the mulga rangelands should focus on measures to facilitate property build-up..
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Fulcher, Jonathan, and Martin Klapper. "Coal seam gas exploration and production in NSW: the new access argument." APPEA Journal 51, no. 2 (2011): 688. http://dx.doi.org/10.1071/aj10068.
Повний текст джерелаАнотація:
The legal frameworks around access to coal seam gas (CSG) resources in NSW are perhaps less developed than in Queensland. Coal appears to be favoured in terms of accessibility over CSG in the premier state. This paper will examine the rules relating to access to CSG resources in NSW; explain the long-standing policy favouring coalover CSG; and, will argue that the state may have to move to amend or overhaul its gas land access arrangements in the next few years.As CSG players look for further reserves in the largely untapped area of NSW coal provinces, the legal arguments about access to extant coal reserves are likely to heat up.
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Kozlowski, Marek, and Yusnani Mohd Yusof. "The role of urban planning and design in responding to climate change: the Brisbane experience." International Journal of Climate Change Strategies and Management 8, no. 1 (January 11, 2016): 80–95. http://dx.doi.org/10.1108/ijccsm-05-2014-0064.
Повний текст джерелаАнотація:
Purpose – The purpose of this paper is to discuss the responses from the urban planning and design professions in Brisbane to the impacts of climate change and the implications of the 2011 flood. In the past decade, the ramifications of climate change have already left a scar on some of the urban regions round the world. The Australian continent has been regarded as one of the most affected regions in terms of climate change implications. The 2011 Queensland floods of historic proportion, which came after a decade of extreme drought, raised many questions about the future development of cities. For the past decades, Queensland’s economy was largely based on property-led development. The flood plain land situated along Brisbane River has been developed and overburdened with building infrastructure contributing to the magnification of the flood events. Design/methodology/approach – The research methodology is based on identification of the problem and the major objective. To address the objective, this study concentrated mainly on the use of qualitative research methods. The major qualitative research methods include literature review, qualitative analysis and observations. Brisbane, the capital of the Australian state of Queensland, has been selected as the case study area. Findings – The paper revealed strong regional and city-wide planning directives addressing climate change which has not yet been fully been translated at the local-neighbourhood level. Originality/value – This paper provides a deep insight analysis and evaluation of the design and planning measures currently used to combat the impacts of climate change.
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Garnett, ST. "Aerial Surveys of Waders (Aves, Charadriiformes) Along the Coast of Northeastern Australia." Wildlife Research 14, no. 4 (1987): 521. http://dx.doi.org/10.1071/wr9870521.
Повний текст джерелаАнотація:
From 1981 to 1984, aerial surveys along the north-east Australian coast between Cairns in Queensland and Milingimbi in Arnhem Land recorded more than 250 000 migratory wading birds in December and February and up to 60 000 in July and early September, largely in the south-east Gulf of Carpentaria. The pattern of dispersion of waders was similar in both summer and winter. More than 85% in both seasons were found along muddy coastline fringed by mangroves. Waders congregated near the mouths of the rivers with the largest catchments.
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Ahern, Kathleen S., James W. Udy, and Shane M. Pointon. "Investigating the potential for groundwater from different vegetation, soil and landuses to stimulate blooms of the cyanobacterium, Lyngbya majuscula, in coastal waters." Marine and Freshwater Research 57, no. 2 (2006): 177. http://dx.doi.org/10.1071/mf05115.
Повний текст джерелаАнотація:
Over the past decade, toxic blooms of the cyanobacterium Lyngbya majuscula have increased in frequency and severity in south-east Queensland, Australia, with blooms in Deception Bay linked to increased inputs of dissolved nutrients and organic carbon from land-based sources. The current study investigates the potential for groundwater from ten combinations of vegetation, soil and landuses to stimulate L. majuscula growth in Deception Bay. The photosynthetic response (14C-bicarbonate uptake rate) of L. majuscula to diluted samples of groundwater (1 part groundwater to 19 parts seawater) was measured under laboratory conditions. The results from the present study show that groundwaters from vegetation/soil/landuse systems characterised by acid sulfate soils, exotic pine plantations and Melaleuca vegetation significantly stimulated L. majuscula photosynthesis. These areas typically have low pH and/or high dissolved organic carbon concentrations with strong iron complexation properties, favouring the bioavailability of nutrients. Data from the current study have been incorporated into models and hazard maps to identify areas most vulnerable to the export of nutrients of concern for L. majuscula growth. The hazard maps are part of the Harmful Algal Bloom Policy within the draft South-east Queensland Coastal Management Plan and are aimed at reducing the severity of L. majuscula blooms.
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Jones, Darryl N., Matthew Bakker, Orphé Bichet, Robert Coutts, and Tracy Wearing. "Restoring habitat connectivity over the road: vegetation on a fauna land-bridge in south-east Queensland." Ecological Management & Restoration 12, no. 1 (March 28, 2011): 76–79. http://dx.doi.org/10.1111/j.1442-8903.2011.00574.x.
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Bray, S. G., and R. Golden. "Scenario analysis of alternative vegetation management options on the greenhouse gas budget of two grazing businesses in north-eastern Australia." Rangeland Journal 31, no. 1 (2009): 137. http://dx.doi.org/10.1071/rj08055.
Повний текст джерелаАнотація:
The emerging carbon economy will have a major impact on grazing businesses because of significant livestock methane and land-use change emissions. Livestock methane emissions alone account for ~11% of Australia’s reported greenhouse gas emissions. Grazing businesses need to develop an understanding of their greenhouse gas impact and be able to assess the impact of alternative management options. This paper attempts to generate a greenhouse gas budget for two scenarios using a spread sheet model. The first scenario was based on one land-type ‘20-year-old brigalow regrowth’ in the brigalow bioregion of southern-central Queensland. The 50 year analysis demonstrated the substantially different greenhouse gas outcomes and livestock carrying capacity for three alternative regrowth management options: retain regrowth (sequester 71.5 t carbon dioxide equivalents per hectare, CO2-e/ha), clear all regrowth (emit 42.8 t CO2-e/ha) and clear regrowth strips (emit 5.8 t CO2-e/ha). The second scenario was based on a ‘remnant eucalypt savanna-woodland’ land type in the Einasleigh Uplands bioregion of north Queensland. The four alternative vegetation management options were: retain current woodland structure (emit 7.4 t CO2-e/ha), allow woodland to thicken increasing tree basal area (sequester 20.7 t CO2-e/ha), thin trees less than 10 cm diameter (emit 8.9 t CO2-e/ha), and thin trees <20 cm diameter (emit 12.4 t CO2-e/ha). Significant assumptions were required to complete the budgets due to gaps in current knowledge on the response of woody vegetation, soil carbon and non-CO2 soil emissions to management options and land-type at the property scale. The analyses indicate that there is scope for grazing businesses to choose alternative management options to influence their greenhouse gas budget. However, a key assumption is that accumulation of carbon or avoidance of emissions somewhere on a grazing business (e.g. in woody vegetation or soil) will be recognised as an offset for emissions elsewhere in the business (e.g. livestock methane). This issue will be a challenge for livestock industries and policy makers to work through in the coming years.
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Braithwaite, LW, M. Maher, SV Briggs, and BS Parker. "An Aerial Survey of 3 Game Species of Waterfowl (Family Anatidae) Populations in Eastern Australia." Wildlife Research 13, no. 2 (1986): 213. http://dx.doi.org/10.1071/wr9860213.
Повний текст джерелаАнотація:
Populations of waterfowl of three game species, the Pacific black duck Anus superciliosa, grey teal A. gibberifrons, and maned duck Chenonetta jubata, were assessed by aerial survey in October 1983 within a survey region of 2 697 000 km2 of eastern Australia. The numbers of each species were assessed on all surface waters of over 1 ha, and on a sample of smaller surface waters within 10 survey bands each 30 km wide and spaced at intervals of 2� latitude from 20�30' to 38�30'S. The area within the survey bands was 324 120 km2, which gave a sampling intensity of 12.0% of the land surface area. The area of features shown as wetlands or water impoundments within the survey bands on 1 : 2 500 000 topographic maps was 19 200 km2 or 11.2% of the total area of these features in the survey region. The area of surface waters surveyed was assessed at 465 300 ha. Assessments of populations of each species were tallied for wetlands by grid cells of 6 min of 1� longitude along the survey bands (258-309 km2 depending on latitude). Distributions were then mapped, with log*10 indices of populations in each cell. Distributions of the black duck and grey teal showed a pattern of intense aggregation in limited numbers of cells, that of the maned duck was more evenly distributed. The major concentrations of the Pacific black duck were recorded in northern New South Wales and the south-eastern, western, central eastern and central coastal regions of Queensland; those of the grey teal were in south-western, western and northern New South Wales and central-eastern Queensland; the maned duck was broadly distributed over inland New South Wales with the exception of the far west, inland southern Queensland, and central northern Victoria.
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Munks, SA, R. Corkrey, and WJ Foley. "Characteristics of Arboreal Marsupial Habitat in the Semi-Arid Woodlands of Northern Queensland." Wildlife Research 23, no. 2 (1996): 185. http://dx.doi.org/10.1071/wr9960185.
Повний текст джерелаАнотація:
The distribution of the koala (Phascolarctos cinereus) and the common brushtail possum (Trichosurus vulpecula) within the Prairie-Torrens Creek Alluvials province of the Desert Upland region of north-western Queensland was examined. The optimum habitat for each species as indicated by the occurrence of faecal pellet groups was found to be that associated with creek-lines. However, other land types were also used by each species to varying degrees. The relationship between various habitat variables and pellet group counts was investigated using Multiple regression and a Generalised linear model. Proximity to creek-bed, total basal area of trees, species richness and Acacia basal area (negative) best explained the occurrence of koalas. Proximity to creek-bed, Acacia basal area (negative), total basal area of trees, and available water (negative) best explained the occurrence of brushtail possums. In contrast to studies of arboreal species in the moist-south-eastern forests of Australia no relationship was found between foliar nutrient concentrations and the occurrence of koalas or brushtail possums. However, a significant relationship was found between leaf water concentration and the occurrence of koalas. It is suggested that water availability is the paramount factor defining preferred arboreal habitat in arid and semi-arid woodlands.
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Witt, G. B. "Vegetation changes through the eyes of the locals: the ‘artificial wilderness’ in the mulga country of south-west Queensland." Rangeland Journal 35, no. 3 (2013): 299. http://dx.doi.org/10.1071/rj12096.
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In Australia, since the late 1990s the issue of vegetation ‘thickening’ has become controversial. The semi-arid mulga lands of eastern Australia typify the debate. One view held by landholders, and some researchers, is that woody vegetation thickening is, at least partially, anthropogenic and leads to productivity loss and biodiversity decline. An alternative argument is that a narrative of vegetation thickening is unsubstantiated and is used by some landholders to justify management practices of clearing, thinning or burning. Absent in the literature has been research into the local knowledge of those who obtain their livelihoods from the region. This study presents an analysis of landholder responses to a survey about vegetation change in the mulga lands of south-west Queensland. Local knowledge is dominated by a view that woody vegetation thickening has occurred and is ongoing, and that it is driven by three interacting factors: (1) climate, especially decadal and multi-decadal extreme variations of both very wet and very dry conditions; (2) fire, particularly the absence of fire; and (3) total grazing pressure, including domestic stock and harder to control feral and native herbivores. Decline in pasture quality and quantity is also noted as an outcome of those same three factors but that it is ultimately linked to greater competition between the increased densities of woody species and the herbaceous layer. Most of the respondents to this survey had three or more generations of accumulated knowledge in the region. The value of local knowledge in land management and policy, although considered of value in many contexts, has received relatively little formal attention in vegetation management. In summary, the landholders view the dense woody component of the vegetation as an unnatural and undesirable ‘artificial wilderness’, which those from outside the region may consider natural and therefore worthy of preservation in its current state.
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Evans, Megan C. "Deforestation in Australia: drivers, trends and policy responses." Pacific Conservation Biology 22, no. 2 (2016): 130. http://dx.doi.org/10.1071/pc15052.
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Australia’s terrestrial environment has been dramatically modified since European colonisation. Deforestation – the clearing and modification of native forest for agricultural, urban and industrial development – remains a significant threat to Australia’s biodiversity. Substantial policy reform over the last 40 years has delivered a range of policy instruments aimed to control deforestation across all Australian States and Territories. Despite these policy efforts – as well as strong governance and high institutional capacity – deforestation rates in Australia were nonetheless globally significant at the turn of this century. Legislation introduced in Queensland and New South Wales during the mid-2000s was at the time seen to have effectively ended broad-scale clearing; however, recent policy changes have raised concerns that Australia may again become a global hotspot for deforestation. Here, I describe the deforestation trends, drivers and policy responses in Australia over the last four decades. Using satellite imagery of forest cover and deforestation events across Australia between 1972 and 2014, I present a comprehensive analysis of deforestation rates at a fine resolution. I discuss trends in deforestation with reference to the institutional, macroeconomic and environmental conditions that are associated with human-induced forest loss in Australia. I provide a detailed history and critique of the native vegetation policies introduced across Australia over the last 40 years, including recent legislative amendments and reviews. Finally, I comment on future prospects for curbing deforestation in Australia, including the role of incentive-based policies such as carbon farming, private land conservation and biodiversity offsets. Despite being a highly active policy space, very little is known of the effectiveness of policy responses to deforestation in Australia, and whether the recent shift away from ‘command and control’ policies will necessarily lead to better outcomes. My analysis demonstrates the need for an effective policy mix to curb deforestation in Australia, including a greater focus on monitoring, evaluation and policy learning.
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Height, Kaitlyn, Sonia Graham, Rebecca Campbell, Gina Hawkes, Silja Schrader, Louise Blessington, and Scott McKinnon. "Opportunities to Manage Herbicide Resistance through Area-Wide Management: Lessons from Australian Cropping Regions." Sustainability 14, no. 3 (February 4, 2022): 1793. http://dx.doi.org/10.3390/su14031793.
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Herbicide resistance management is often understood as a decision for individual land managers, but their decisions have far-reaching impacts for social-ecological systems. Area-wide management can reduce these impacts by supporting many land managers to cooperatively work towards a shared goal of reducing the spread of resistance. The aim of this research is to identify what support is needed for area-wide herbicide resistance management in cropping systems. Data was collected from 84 interviews with growers, public land managers and weed management advisors. Sixty-five interviews were conducted across three cropping regions of eastern Australia—Darling Downs (Queensland), Riverina (New South Wales) and Sunraysia (Victoria)—and 19 interviews were conducted with stakeholders beyond these regions. The majority (51%) of interviewees expressed concern about the spread of herbicide resistance, but only 14% described involvement in area-wide resistance management programs. Area-wide management was mostly reported to involve sharing information among stakeholders, rather than coordination or joint activities. Key barriers to participation were perceived to be the diverse agricultural industries in each region and the costs of participation. Future area-wide management program designs need to build working relationships among diverse stakeholders, clearly define the boundaries of the program and demonstrate the benefits that accrue from participation.
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Allen, D. E., M. J. Pringle, D. W. Butler, B. K. Henry, T. F. A. Bishop, S. G. Bray, T. G. Orton, and R. C. Dalal. "Effects of land-use change and management on soil carbon and nitrogen in the Brigalow Belt, Australia: I. Overview and inventory." Rangeland Journal 38, no. 5 (2016): 443. http://dx.doi.org/10.1071/rj16009.
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Soil and land-management interactions in Australian native-forest regrowth remain a major source of uncertainty in the context of the global carbon economy. We sampled soil total organic C (TOC) and soil total N (TN) stocks at 45 sites within the Brigalow ecological community of the Brigalow Belt bioregion, Queensland, Australia. The sites were matched as triplets representing three land uses, specifically: uncleared native brigalow forest (‘Remnant’); grassland pasture (‘Pasture’), derived by clearing native vegetation and maintained as pasture for a minimum of 10 years, and; regrowing native brigalow forest (‘Regrowth’, stand ages ranging from 10 to 58 years) that had developed spontaneously after past vegetation clearing for pasture establishment. Soil TOC fractions and natural abundance of soil C and N isotopes were examined to obtain insight into C and N dynamics. An updated above- and belowground carbon budget for the bioregions was generated. Average soil TOC stocks at 0–0.3-m depth ranged from 19 to 79 Mg ha–1 and soil TN stocks from 1.8 to 7.1 Mg ha–1 (2.5th and 97.5th percentiles, respectively). A trend in stocks was apparent with land use: Remnant > Regrowth ≅ Pasture sites. Soil δ13C ranged from –14 to –27‰, and soil δ15N ranged from 4‰ to 17‰, in general reflecting the difference between Pasture (C4-dominated) land use and N2-fixing (C3-dominated) Remnant and Regrowth. Mid-infrared spectroscopy predicted C fractions as a percentage of soil TOC stock, which ranged from 5% to 60% (particulate), 20–80% (humus) and 9–30% (resistant/inert). The geo-referenced soil and management information we collected is important for the calibration of C models, for the estimation of national C accounts, and to inform policy developments in relation to land-resource management undertaken within the Brigalow Belt bioregions of Australia.
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Macaulay, Scott, and Ian Mullen. "Predicting salinity impacts of land-use change: Groundwater modelling with airborne electromagnetics and field data, SE Queensland, Australia." International Journal of Applied Earth Observation and Geoinformation 9, no. 2 (May 2007): 124–29. http://dx.doi.org/10.1016/j.jag.2006.07.003.
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Bond, Amy R., and Darryl N. Jones. "Temporal trends in use of fauna-friendly underpasses and overpasses." Wildlife Research 35, no. 2 (2008): 103. http://dx.doi.org/10.1071/wr07027.
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The impact of roads on local biodiversity is a major issue associated with urbanisation. A major arterial road in the southern suburbs of Brisbane, south-east Queensland, was upgraded in 2004–05 from two to four lanes. In an attempt to minimise the impact of the larger road on local wildlife populations, a range of fauna crossing structures were constructed at the site. Monitoring of road-kill was undertaken for 4 months before construction and after the completion of construction. Assessment of the use of two underpasses and a large overpass (‘land-bridge’) started 6 months after construction using sand tracking in underpasses and scat sampling on the land-bridge. An initial 26-week period of intensive monitoring was undertaken from August 2005 to February 2006 followed by monthly monitoring from June 2006 to June 2007. On average, 1–5 tracks per day were detected in the underpasses at the start of the survey, increasing steadily to ~42 tracks per day by February 2006. The monthly survey showed regular use of the underpasses by a wide range of species and species-groups, the most abundant being ‘rodents’, most likely Rattus species, both native and introduced. The land-bridge was also used continuously by three species of macropod (red-necked wallaby, Macropus rufogriseus; swamp wallaby, Wallabia bicolor; and eastern grey kangaroo, Macropus giganteus) with brown hare (Lepus capensis) becoming increasingly common in summer 2006. The exclusion fencing was extremely effective in preventing most road-kill, at least of larger species, except following human-related breaches in the fence.
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Plumb, James. "‘Back to the Future' A review of Australian reservation and other natural gas export control policies." APPEA Journal 59, no. 2 (2019): 505. http://dx.doi.org/10.1071/aj18282.
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Despite record levels of domestic production, forecasters are predicting that the east coast Australian gas market will remain tight in 2019. The introduction of the Australian Domestic Gas Security Mechanism (ADGSM) by the Federal Government in 2017, and the proposal announced by the Australian Labour Party (ALP) to bolster the mechanism, have again thrust the issue of political intervention in the export gas market into sharp focus. This paper provides an overview of the current regulatory intervention at the state and federal level, and looks back at the history of controls imposed upon the Australian gas export market. The paper is divided into two parts: Part 1, which looks at current regulatory controls engaged by various State and Federal governments: (a) the development and implementation of the ADGSM; (b) the development and implementation of the Queensland Government’s Prospective Gas Production Land Reserve policy (PGPLR); and (c) the Government of Western Australia’s (WA Government) domestic gas policy. The paper also reviews policy announcements made by the ALP in the lead up to the 2019 Federal election. Part 2 provides a broad overview of the history of controls on gas exports in Australia, from the embargo on exports from the North West Shelf between 1973 and 1977, through the increasing liberalisation of Australian energy policy during the 1980s and 1990s (and the associated conflict with state concerns of ensuring sufficiency of the domestic supply of gas), up to the removal of federal controls on resources exports (including liquefied natural gas) in 1997.
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JOHNSON, A. K. L., S. P. EBERT, and A. E. MURRAY. "Distribution of coastal freshwater wetlands and riparian forests in the Herbert River catchment and implications for management of catchments adjacent the Great Barrier Reef Marine Park." Environmental Conservation 26, no. 3 (September 1999): 229–35. http://dx.doi.org/10.1017/s0376892999000314.
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Because coral reefs are sensitive to land derived inputs of nutrient and sediment, there is concern worldwide for the effects of anthropogenic change in river catchments on reefs. Thirty-one river catchments drain directly into the waters of the Great Barrier Reef, NE Australia. This case study was undertaken on the floodplain of the Herbert River catchment in north Queensland, utilizing remote sensing and GIS to assess both spatial and temporal changes in freshwater wetlands and riparian forests. We demonstrate that there has been a very large reduction in the area of these ecosystems since European settlement in the mid nineteenth century, with an 80% decline in their extent since 1943. We provide a range of quantitative measures to show that the landscape diversity of these ecosystems has also declined. These changes are of importance in terms of regional, national and international trends. We argue that policy, planning and management reform is required if the remaining ecological, economic and social values of these systems and the adjacent Great Barrier Reef Marine Park are to be maintained.
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Florentine, Singarayer K. "Species persistence and natural recruitment after 14 years in a restoration planting on ex-rainforest land in north-east Queensland." Ecological Management & Restoration 9, no. 3 (December 2008): 217–24. http://dx.doi.org/10.1111/j.1442-8903.2008.00421.x.
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Strang, Veronica. "Knowing Me, Knowing You: Aboriginal and European Concepts of Nature as Self and Other." Worldviews: Global Religions, Culture, and Ecology 9, no. 1 (2005): 25–56. http://dx.doi.org/10.1163/1568535053628463.
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AbstractBased on long-term fieldwork with Aboriginal groups, Euro-Australian pastoralists and other land users in Far North Queensland, this paper considers the ways in which indigenous relations to land conflate concepts of Nature and the Self, enabling subjective identification with elements of the environment and supporting long-term affective relationships with place. It observes that indigenous cultural landscapes are deeply encoded with projections of social identity: this location in the immediate environment facilitates the intergenerational transmission of knowledge and identity and supports beliefs in human spiritual transcendence of mortality. The paper suggests that Aboriginal relations to land are therefore implicitly founded on interdependent precepts of social and environmental sustainability. In contrast, Euro-Australian pastoralists' cultural landscapes, and constructs of Nature, though situated within more complex relations with place, remain dominated by patriarchal and historically adversarial visions of Nature as a feminine "wild-ness" or "otherness" requiring the civilising control of (male) Culture and rationality. Human spiritual being and continuity is conceptualised as above or outside Nature, impeding the location of selfhood and collective continuity within the immediate environment. In tandem with mobile and highly individuated forms of social identity, this positions Nature as "other". There is thus a subjective separation between the individualised life of the self, and the life of Nature/other that, despite an explicit discourse in which ecological well-being is valorised, inhibits affective connection with place and confounds sustainability.
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Stone, M. J. "CONTRIBUTING TO APEA'S RESPONSE ON ENVIRONMENTAL ISSUES — THE NEED FOR SHARING MEMBER COMPANIES' EXPERIENCE AND EXPERTISE." APPEA Journal 27, no. 1 (1987): 53. http://dx.doi.org/10.1071/aj86006.
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In early 1986 the APEA Environmental Affairs Committee developed an environmental policy to provide a framework for the Association's response on environmental issues which affect the petroleum industry. To fulfil the aims of this document there is a need for member companies to assist the committee in addressing and promoting the industry's environmental management aims. Environment is defined in broad terms in current legislation. To embrace this definition, APEA must adopt a position that reflects the industry's desire to be represented at the policy review stages of such environmental issues as land use proposals. Since 1971 only eight papers in the APEA Journal have addressed environmental issues. Companies have generally not shared or promoted their individual responses to such issues, although there would be value to the industry as a whole through identifying and discussing environmental management expertise and experience within APEA. Two examples of environmental management practice applied by CSR in Delhi Petroleum's activities in South Australia and Queensland are discussed: a demonstration seismic line within the Witjira National Park, South Australia and the use of rollers for seismic line preparation. Similar examples can probably be identified for all member companies. In generating a pool of operational examples, APEA might better represent the industry's ability and record in this field to governments and to the general public.
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Green, Ronda J., and Carla P. Catterall. "The effects of forest clearing and regeneration on the fauna of Wivenhoe Park, south-east Queensland." Wildlife Research 25, no. 6 (1998): 677. http://dx.doi.org/10.1071/wr97016.
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The effects on terrestrial fauna of clearing, fragmentation and regeneration of eucalypt forest and woodland were investigated in a former cattle-grazing area of south-east Queensland. The abundance of species and higher taxa was compared among four major habitat types: interior of relatively mature forest, interior of earlier stages of regenerating forest, cleared pasture, and abrupt edges between the forest and cleared land. The regenerating sites were several decades old and consisted mainly of Eucalyptus saplings 3–6 m high, with a grassy understorey. Numbers of pitfall-trapped invertebrate orders were significantly higher in forest interior and forest edge than in cleared or regenerating sites; numbers of coleopterans were significantly higher in forest interior sites than in cleared or regenerating sites; and numbers of isopterans were significantly higher in both forest interior and forest edge sites than in cleared sites. Total abundance of native non-flying mammals was significantly higher in forest interior than elsewhere. Other vertebrates apart from birds were detected in numbers too low for analysis. Cleared sites supported significantly lower numbers of avian species and Orders, and of total birds, than any other habitat in winter, with a similar but non-significant trend in summer. Forest interior sites showed a significantly higher abundance of several avian species than any other habitat, but noisy miners and Torresian crows were significantly more abundant in edge sites than in forest interior sites. Sites of low regeneration were chiefly utilised by birds characteristic of forest edge. Many decades of regeneration would appear to be necessary before many forest-dependant species are adequately supported in these areas.
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Valbuena, Diego, Arnold K. Bregt, Clive McAlpine, Peter H. Verburg, and Leonie Seabrook. "An agent-based approach to explore the effect of voluntary mechanisms on land use change: A case in rural Queensland, Australia." Journal of Environmental Management 91, no. 12 (December 2010): 2615–25. http://dx.doi.org/10.1016/j.jenvman.2010.07.041.
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Sullivan, B. J., G. S. Baxter, and A. T. Lisle. "Low-density koala (Phascolarctos cinereus) populations in the mulgalands of south-west Queensland. I. Faecal pellet sampling protocol." Wildlife Research 29, no. 5 (2002): 455. http://dx.doi.org/10.1071/wr00110.
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Koala (Phascolarctos cinereus) populations in eastern Australia are threatened by land clearing for agricultural and urban development. At the same time, conservation efforts are hindered by a dearth of information about inland populations. Faecal deposits offer a source of information that is readily available and easily collected non-invasively. We detail a faecal pellet sampling protocol that was developed for use in a large rangeland biogeographic region. The method samples trees in belt transects, uses a thorough search at the tree base to quickly identify trees with koala pellets under them, then estimates the abundance of faecal pellets under those trees using 1-m2 quadrats. There was a strong linear relationship between these estimates and a complete enumeration of pellet abundance under the same trees. We evaluated the accuracy of our method in detecting trees where pellets were present by means of a misclassification index that was weighed more heavily for missed trees that had high numbers of pellets under them. This showed acceptable accuracy in all landforms except riverine, where some trees with large numbers of pellets were missed. Here, accuracy in detecting pellet presence was improved by sampling with quadrats, rather than basal searches. Finally, we developed a method to reliably age pellets and demonstrate how this protocol could be used with the faecal-standing-crop method to derive a regional estimate of absolute koala abundance.
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Shaygan, Mandana, and Thomas Baumgartl. "Simulation of the Effect of Climate Variability on Reclamation Success of Brine-Affected Soil in Semi-Arid Environments." Sustainability 12, no. 1 (January 2, 2020): 371. http://dx.doi.org/10.3390/su12010371.
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Soils in arid and semi-arid environments are threatened by salinization. A cost-effective and efficient way to reclaim saline land is through leaching. This will be most effective in situations where direct human impact is the cause for salinity, e.g., in environments affected by industrial use or land rehabilitation following mining. Irrigation, which is the most common means of achieving salt leaching, is not feasible for the reclamation of mine sites’ salt-affected soils located in remote areas, and thus, land reclamation largely relies on natural climatic conditions. This study was conducted to assess the effect of different climatic conditions of semi-arid environments on spatio-temporal salt leaching from brine-affected soil, and investigate the efficacy of the reduction of soil bulk density as a reclamation technique for saline land experiencing water scarcity. Three regions (represented by the Australian cities of Roma, Mount Isa, and Quilpie) representing semi-arid environments of Australia were selected, and their climatic scenarios (23 years) were applied to a validated HYDRUS-1D model. A brine-affected soil typical to Queensland, Australia, was chosen for this study. The investigations established that a greater number of individual high rainfall events resulted in a greater reduction of salinity in Roma (96%) and Mount Isa (93.31%) compared with Quilpie (58.75%), in which the soil salinity approached a level (<2 dS m−1) that was suitable for sustaining plant growth. Soil salinity reduced to 8 dS m−1 under the climatic conditions of the Quilpie region. This study also demonstrated that the success of salt leaching from a brine-affected soil is a consequence of a sensitive response to the depth of individual rainfall events rather than rainfall distribution and the total amount of rainfall, and is controlled by the physical properties of the soil. Where climatic conditions cannot solely assist with salt leaching, reclamation may be successful by reducing soil bulk density.
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Cowled, Brendan D., Steven J. Lapidge, Michelle Smith, and Linton Staples. "Attractiveness of a novel omnivore bait, PIGOUT®, to feral pigs (Sus scrofa) and assessment of risks of bait uptake by non-target species." Wildlife Research 33, no. 8 (2006): 651. http://dx.doi.org/10.1071/wr06054.
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Following a bait-preference pilot study on captive feral pigs, a series of field studies assessed the attractiveness and target-specificity of a prototype manufactured feral pig bait (PIGOUT®). Two promising test baits and fresh meat reference baits were biomarked with iophenoxic acid and aerially distributed in 100-km2 blocks of land infested with feral pigs in western Queensland to assess field uptake and target-specificity without prefeeding. Uptake was assessed by measuring blood iodine levels in aerially shot feral pigs. In all, 80% of feral pigs sampled in a non-toxic PIGOUT®-baited area had significantly elevated blood iodine, compared with 52% of sampled feral pigs in a meat-baited area (although slightly different baiting strategies were employed). No age or sex bias was evident in PIGOUT®-consuming feral pigs. No monitored manufactured baits were consumed by non-target species in 500 bait-nights. Attractiveness and target-specificity trials of ground-laid, unfenced PIGOUT® baits compared with reference baits were subsequently undertaken in several regions of eastern Australia. Results showed that PIGOUT® was consumed readily by feral pigs at all sites, and that it offered significant improvement in target specificity when compared with unfenced wheat or meat baits. However, the baits were consumed by small numbers of macropods, birds and possums. Available evidence indicates that the target-specificity of PIGOUT® bait is highest in the rangelands, reducing slightly in temperate areas and subalpine forests, where abundance of small animals is higher.
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Fukuda, Yusuke, Peter Whitehead, and Guy Boggs. "Corrigendum to: Broad-scale environmental influences on the abundance of saltwater crocodiles (Crocodylus porosus) in Australia." Wildlife Research 35, no. 2 (2008): 170. http://dx.doi.org/10.1071/wr06110_co.
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Saltwater crocodile (Crocodylus porosus) populations have recovered strongly across northern Australia over the 30 years since the species was protected from hunting. However, monitoring studies show large geographical variations in abundance across the Northern Territory, Queensland and Western Australia. The Northern Territory has considerably higher densities, raising questions about constraints on recovery in the other states. We examined broad-scale environmental influences on population abundance by modelling the species.environment relationships across northern Australia. The hypothesis-based models showed strong support for the linkage to (1) the ratio of total area of favourable wetland vegetation types (Melaleuca, grass and sedge to total catchment area, (2) a measure of rainfall seasonality, namely the ratio of total precipitation in the coldest quarter to total precipitation in the warmest quarter of a year, and (3) the mean temperature in the coldest quarter of a year. On the other hand, we were unable to show any clear negative association with landscape modification, as indicated by the extent of high-impact land uses or human population density in catchments. We conclude that geographical variations in crocodile density are mostly attributable to differences in habitat quality rather than the management regimes adopted in the respective jurisdictions.
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Ingleby, S. "Distribution and status of the spectacled hare-wallaby, Lagorchestes conspicillatus." Wildlife Research 18, no. 5 (1991): 501. http://dx.doi.org/10.1071/wr9910501.
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Past and present distributions of Lagorchestes conspicillatus were compared using data from museums, explorers' records and from recent field surveys. These data indicated that L. conspicillatus has declined in distribution and abundance during the last century. This species is now rare in the Pilbara and Kimberley regions of Western Australia. It is moderately common between latitudes 16� and 18�S in central and eastern Northern Territory, and its range extends north to around 12�S in Arnhem Land. However, the southern limits of its range in the Northern Territory have contracted northward by over 200 km and it is rarely recorded below 21�S. L. conspicillatus remains widespread in Queensland although its numbers in several areas appear to have declined in the last 10-15 years. The status of L. conspicillatus should be regarded as vulnerable. Most of its preferred habitats are currently under pastoral lease and at risk of alteration by introduced herbivores or clearing. Unfavourable fire regimes and feral animals may also pose a threat to its survival in some areas. Habitats suitable for L. conspicillatus are very poorly represented in National Parks throughout northern Australia and this situation should be rectified.
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Herr, A., and P. M. Kuhnert. "Assessment of uncertainty in Great Barrier Reef catchment models." Water Science and Technology 56, no. 1 (July 1, 2007): 181–88. http://dx.doi.org/10.2166/wst.2007.450.
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This paper addresses uncertainty in socio-economic and sediment-nutrient models that are being developed for the assessment of change in the Great Barrier Reef (GBR) area. The catchments draining into the GBR lagoon are sources of pollutants. The Reef Water Quality Management Plan of the Queensland Government identified sediments and nutrients transported to the GBR lagoon as the major long-term threats to the reef and inshore ecosystems and the wellbeing of the human communities. The plan clearly indicates that changes in land management are required by 2013 to reduce pollutant inputs and, at the same time, maintain or enhance the benefits from using the inland waters. Science that provides decision tools for natural resource management and improves socio-economic and biophysical understanding is required to enable managers to make better decisions. A major research activity (the Water for a Healthy Country Flagship) aims to address social, economic and biophysical outcomes of land management change in the GBR. It contains research activities that provide information for integrated model development. Currently, however, these models lack the ability to estimate the uncertainty associated with prediction. This project aims to provide statistical methods for assessing uncertainty in models of sediment transportation to the GBR. Furthermore, it provides a link between the models and the decision-making process that allows assessment of uncertainty, a step pertinent to the risk analysis of policy options. This paper describes current and ongoing approaches for assessing uncertainty using a sediment modelling example and provides a way forward for the integration of applied socio-economic and biophysical models used in the decision-making process.
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Graham, Cameron A., Martine Maron, and Clive A. McAlpine. "Influence of landscape structure on invasive predators: feral cats and red foxes in the brigalow landscapes, Queensland, Australia." Wildlife Research 39, no. 8 (2012): 661. http://dx.doi.org/10.1071/wr12008.
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Context Invasive mammalian predators are often associated with fragmented landscapes, and can compound the impacts of habitat loss and fragmentation on native fauna. Knowledge of how invasive predators are influenced by different landscape structures can assist in the mitigation of their impacts. Aims The aim of the present study was to investigate the influence of landscape structure and site-scale habitat attributes on the frequency of feral-cat and red-fox detections in fragmented agricultural landscapes. Methods Field surveys of the frequency of red-fox and feral-cat visitation at a site scale were stratified for six different habitat types in six study subregions. The habitat types were large remnant patch interior, large remnant patch edge, small remnant patch, roadside verge, regrowth patch and open agricultural land adjacent to a remnant patch. Sites were centred in a 1-km buffer area from which landscape composition and configuration were calculated. We applied a generalised linear model and an information-theoretic approach to determine the effect size and importance and rank of the explanatory variables on red-fox, feral-cat and pooled cat and fox detection rates. Key results The most important factors influencing detection rates had a positive effect and included: the dominance of cropping in the landscape (cat, fox, pooled cat and fox); and the density of vegetation at a site scale (fox, pooled cat and fox). The number of native habitat patches was also an important factor in the models of red foxes and pooled invasive predators. Conclusion Spatially heterogeneous cropping landscapes incur higher rates of invasive-predator detections than do intact native-woodland and pasture landscapes at the 1-km scale. At a site scale, elevated invasive-predator detections occurred at sites with dense vegetation, characteristic of narrow woodland and the edges of large woodland patches. Implications The research findings highlight that vertebrate pest management needs to target highly fragmented agricultural landscapes that are more likely to have elevated levels of invasive-predator activity. Landscape restoration efforts need to consider the redesign of landscapes to make them less suitable for predators and more hospitable for native wildlife.
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Fukuda, Yusuke, Peter Whitehead, and Guy Boggs. "Broad-scale environmental influences on the abundance of saltwater crocodiles (Crocodylus porosus) in Australia." Wildlife Research 34, no. 3 (2007): 167. http://dx.doi.org/10.1071/wr06110.
Повний текст джерелаАнотація:
Saltwater crocodile (Crocodylus porosus) populations have recovered strongly across northern Australia over the 30 years since the species was protected from hunting. However, monitoring studies show large geographical variations in abundance across the Northern Territory, Queensland and Western Australia. The Northern Territory has considerably higher densities, raising questions about constraints on recovery in the other states. We examined broad-scale environmental influences on population abundance by modelling the species–environment relationships across northern Australia. The hypothesis-based models showed strong support for the linkage to (1) the ratio of total area of favourable wetland vegetation types (Melaleuca, grass and sedge) to total catchment area, (2) a measure of rainfall seasonality, namely the ratio of total precipitation in the coldest quarter to total precipitation in the warmest quarter of a year, and (3) the mean temperature in the coldest quarter of a year. On the other hand, we were unable to show any clear negative association with landscape modification, as indicated by the extent of high-impact land uses or human population density in catchments. We conclude that geographical variations in crocodile density are mostly attributable to differences in habitat quality rather than the management regimes adopted in the respective jurisdictions.
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Chen, Xiaolin, Chris R. Dickman, and Michael B. Thompson. "Diet of the mulgara, Dasycercus cristicauda (Marsupialia : Dasyuridae), in the Simpson Desert, central Australia." Wildlife Research 25, no. 3 (1998): 233. http://dx.doi.org/10.1071/wr97087.
Повний текст джерелаАнотація:
The diet of the mulgara, Dasycercus cristicauda, from the Simpson Desert in Queensland, was analysed using scats collected between 1990 and 1995. Insects, arachnids and rodents were the main classes of prey of D. cristicauda, but reptiles, centipedes and small marsupials were also consumed. Insects represented 92% by percentage frequency of occurrence in scats, while rodents represented 33% by percentage frequency. Invertebrate prey ≥6 mm in length and vertebrate prey occurred frequently in scats, but small prey ( 1–5 mm), when present, occurred in large numbers. D. cristicauda ate more individual prey items in spring and winter than in autumn, and more large-sized prey in spring than in autumn. In autumn, D. cristicauda consumed mostly insects (100% by frequency) and few rodents (8%), but in winter and spring, switched to rodents (38% and 47% respectively) and insects (88% and 93% respectively). Seasonal shifts in diet may reflect changes in the availability of different groups of prey, or changes in prey selectivity by D. cristicauda in response to costs imposed by seasonal reproduction. The dietary flexibility of D. cristicauda may allow individuals to occupy stable ranges, and has perhaps also promoted the persistence of the species in arid areas that have been subjected to changes in land use since European settlement.
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Southwell, CJ, CJ Southwell, MS Fletcher, and MS Fletcher. "Diurnal and Nocturnal Habitat Utilisation by the Whiptail Wallaby, Macropus Parryi." Wildlife Research 15, no. 6 (1988): 595. http://dx.doi.org/10.1071/wr9880595.
Повний текст джерелаАнотація:
Diurnal and nocturnal habitat use was determined from walk transect counts in a 40 000 ha study area in SE Queensland containing 3 land systems: (a) alluvial flats mainly clear of natural vegetation; (b) hills extending from the alluvial flats with open forest; and (c) plateaux with grassy and shrubby open forest. Habitat utilization was examined in relation to 3 vegetation variables (shrub density, live tree density and dead tree density) and 3 topographic variables (altitude, aspect and slope). Utilization was most consistent between day and night for live tree density and slope, being biased toward areas of moderate live tree density and against flat areas at both times. A preference for areas with moderate shrub density was more pronounced during the day than at night. Areas with moderate dead tree density were strongly preferred over areas with low dead tree density during the day, but at night there was no strong bias for or against areas with dead trees. M. parryi avoided very low altitudes at all times. Utilization of higher areas varied day and night, a diurnal preference for higher altitudes being ameliorated by some apparent downhill movement to lower slopes at night. A preference during the day for north and west aspects was not evident at night.
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Howes, Alison L., and Martine Maron. "Interspecific competition and conservation management of continuous subtropical woodlands." Wildlife Research 36, no. 7 (2009): 617. http://dx.doi.org/10.1071/wr09054.
Повний текст джерелаАнотація:
Context. Large reserves have potential to provide important refugia for fragmentation-sensitive species as they lack many aspects of habitat degradation associated with fragmented regions. However, large reserves often have a history of deleterious management practices that may affect the restoration of biological diversity. One significant symptom of habitat fragmentation and disturbance in Australia is the increased occurrence of the aggressive noisy miner (Manorina melanocephala). In Queensland, however, even large continuous areas of woodland appear to be dominated by the noisy miner. Aims.We examined the severity of this phenomenon by identifying the interactions between habitat structure, noisy miner abundance and avian assemblages in a private and a public conservation reserve in central Queensland. We investigated potential constraints on restoration of avian diversity including: (1) how changes in habitat structure as a result of grazing by feral animals and burning regimes affect bird assemblages; and (2) how the noisy miner impacts on avian assemblages in these unfragmented woodlands. Methods. Bird surveys and habitat assessments were conducted in 49 sites on three separate occasions. Fire history and intensity of grazing pressure were determined for each site with direct and indirect observations. Sampling for lerp from insects of the family Psyllidae was also undertaken during the survey periods. A Bayesian model averaging (BMA) approach was used to model avian response to each of the habitat variables. Key results. The noisy miner dominated most of the study area, reducing small passerine abundance and species richness. Noisy miners were advantaged where shrub cover was low and feral grazing impacts were evident. Disturbance factors including recent wildfire and heavy grazing strongly reduced small passerine bird richness and abundance. Conclusions. Reducing the abundance of this ‘reverse keystone’ species requires control of feral herbivore populations and modification of fire regimes to achieve a mosaic including patches with a dense shrub layer. Implications. Deleterious interactions with competitive native species, such as noisy miners, are obstacles to bird conservation not only in fragmented landscapes but also in large, continuous woodland areas. Land mangers of protected areas need to be aware of shifts in interactions among native species driven by habitat disturbance, which may ultimately affect conservation outcomes.
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Murray, Ian. "Native Title Tax Reforms: Bull's Eye or Wide of the Mark?" Federal Law Review 41, no. 3 (September 2013): 497–524. http://dx.doi.org/10.22145/flr.41.3.5.
Повний текст джерелаАнотація:
Twenty years on from Mabo v Queensland (No 2) (1992) 175 CLR 1, there is change afoot in the tax treatment of native title. On 25 June 2013, the federal Parliament passed reforms which render certain payments to, or for the benefit of, Indigenous persons exempt from income tax. To qualify, the payments must be made under native title agreements for acts affecting native title, or by way of compensation under the Native Title Act 1993 (Cth). While drafted in simple language, the reforms apply against a complex factual backdrop of native title agreements, trust structures and social policy issues. This paper argues that the reforms are likely to cause significant implementation difficulties for energy and resources proponents and Indigenous groups. They also raise potential hurdles for the government's objectives of reducing uncertainty in the tax treatment of native title rights and of improving economic and social outcomes for native title groups. The significance of these problems is highlighted by the scale of benefits under native title agreements over land access. The paper therefore questions whether an earlier option raised by the government, an Indigenous Community Fund model, deserves further consideration. It would more directly link tax exemption to outcomes, would improve the certainty of tax treatment and would also better support the intermediary Indigenous benefits management institutions which will play a critical role in achieving those outcomes.
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Sangha, Kamaljit K., Ronju Ahammad, Muhammed Sohail Mazahar, Matt Hall, Greg Owens, Leanne Kruss, Gordon Verrall, Jo Moro, and Geoff Dickinson. "An Integrated Assessment of the Horticulture Sector in Northern Australia to Inform Future Development." Sustainability 14, no. 18 (September 16, 2022): 11647. http://dx.doi.org/10.3390/su141811647.
Повний текст джерелаАнотація:
The horticulture sector in northern Australia, covering north of Western Australia (WA), Northern Territory (NT), and north Queensland (QLD), contributes $1.6 billion/year to the Australian economy by supplying diverse food commodities to meet domestic and international demand. To date, the Australian Government has funded several studies on developing the north’s agriculture sector, but these primarily focused on land and water resources and omitted an integrated, on-ground feasibility analysis for including farmers’/growers’ perspectives. This study is the first of its kind in the north for offering a detailed integrated assessment, highlighting farmers’ perspectives on the current state of the north’s horticulture sector, and related challenges and opportunities. For this, we applied a bottom-up approach to inform future agriculture development in the region, involving a detailed literature review and conducting several focus group workshops with growers and experts from government organisations, growers’ associations, and regional development agencies. We identified several key local issues pertaining to crop production, availability of, and secure access to, land and water resources, and workforce and marketing arrangements (i.e., transport or processing facilities, export opportunities, biosecurity protocols, and the role of the retailers/supermarkets) that affect the economic viability and future expansion of the sector across the region. For example, the availability of the workforce (skilled and general) has been a challenge across the north since the start of the COVID-19 pandemic in 2020. Similarly, long-distance travel for farm produce due to a lack of processing and export facilities in the north restricts future farm developments. Any major investment should be aligned with growers’ interests. This research highlights the importance of understanding and incorporating local growers’ and researchers’ perspectives, applying a bottom-up approach, when planning policies and programs for future development, especially for the horticulture sector in northern Australia and other similar regions across the globe where policy makers’ perspectives may differ from farmers.
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Wescott, Geoffrey Charles. "Australia's Distinctive National Parks System." Environmental Conservation 18, no. 4 (1991): 331–40. http://dx.doi.org/10.1017/s037689290002258x.
Повний текст джерелаАнотація:
Australia possesses a distinctive national parks and conservation reserves system, in which it is the State Governments rather than the Federal Government which owns, plans, and manages, national parks and other conservation reserves.Most Australian States declared their first national parks in the latter quarter of last century, Australia's first national park being declared in New South Wales in March 1879. These critical declarations were followed by a slow accumulation of parks and reserves through to 1968. The pace of acquisition then quickened dramatically with an eight-fold expansion in the total area of national parks between 1968 and 1990, at an average rate of over 750,000 ha per annum. The present Australian system contains 530 national parks covering 20.18 million hectares or 2.6% of the land-mass. A further 28.3 million hectares is protected in other parks and conservation reserves. In terms of the percentage of their land-mass now in national parks, the leading States are Tasmania (12.8%) and Victoria (10.0%), with Western Australia (1.9%) and Queensland (2.1%) trailing far behind, and New South Wales (3.92%) and South Australia (3.1%) lying between.The Australian system is also compared with the Canadian and USA systems. All three are countries of widely comparable cultures that have national parks covering similar percentage areas, but Canada and the USA have far fewer national parks than Australia and they are in general of much greater size. In addition, Canada and the USA ‘resource’ these parks far better than the Australians do theirs. The paper concludes that Australia needs to rationalize its current system by introducing direct funding, by the Federal Government, of national park management, and duly examining the whole system of reserves from a national rather than States' viewpoint.
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Callaghan, John, Clive McAlpine, David Mitchell, Jane Thompson, Michiala Bowen, Jonathan Rhodes, Carol de Jong, Renee Domalewski, and Alison Scott. "Ranking and mapping koala habitat quality for conservation planning on the basis of indirect evidence of tree-species use: a case study of Noosa Shire, south-eastern Queensland." Wildlife Research 38, no. 2 (2011): 89. http://dx.doi.org/10.1071/wr07177.
Повний текст джерелаАнотація:
Context Mapping the habitat and distribution of a species is critical for developing effective conservation plans. Koala (Phascolarctos cinereus, Phascolarctidae) distribution is constrained by the nutritional and shelter requirements provided by a relatively small number of key tree species in any given area. Identifying these key species provides a practical foundation for mapping koala habitat and prioritising areas for conservation. Aims To determine key tree species for koalas in Noosa Shire (south-eastern Queensland, Australia) as a basis for mapping koala habitat quality. Methods We applied a faecal-pellet survey methodology in 1996/97 to assess evidence of use by koalas of 4031 trees from 96 randomly stratified survey sites across different eucalypt-forest and woodland communities. Results were compared with those from a later survey undertaken in 2001/02 involving 5535 trees from 195 sites that were distributed across broadly similar areas with the aim to investigate aspects of koala landscape ecology. Key results A total of 66.7% of the 1996/97 survey sites contained koala faecal pellets, recorded under 953 eucalypt trees (14 species) and 1670 non-eucalypt trees (27 species). The proportion of trees at a given survey site that had koala faecal pellets at the base ranged from 2.2% to 94.7% (mean = 31.13 ± 2.59% s.e.). For the 2001/02 dataset, koala pellets were found at 55.4% of sites, from 794 eucalypt and 2240 non-eucalypt trees. The proportion of trees with pellets ranged from 3% to 80% (mean = 21.07 ± 1.77% s.e.). Both the 1996/97 and 2001/02 surveys identified the same three tree species (forest red gum, Eucalyptus tereticornis, swamp mahogany, E. robusta, and tallowwood, E. microcorys) as the highest-ranked for koala use in the study area. Three additional species (red mahogany, E. resinifera, small-fruited grey gum, E. propinqua, and grey ironbark, E. siderophloia) were identified in the 1996/97 surveys as key eucalypt species. Of the non-eucalypts in the 1996/97 dataset, coast cypress pine (Callitris columellaris) and broad-leaved paperbark (Melaleuca quinquenervia) ranked highest for use by koalas, followed by pink bloodwood (Corymbia intermedia) and brush box (Lophostemon confertus). White bottlebrush (Callistemon salignus), hard corkwood (Endiandra sieberi), M. quinquenervia and C. intermedia ranked highest in the 2001/02 dataset. The findings showed significantly greater use of larger eucalypts (i.e. 300-mm to >600-mm diameter at breast height). Conclusions The identified key eucalypt species, being the critical limiting resource for koalas, were used to assign koala habitat-quality classes to mapped regional ecosystem types to create a Koala Habitat Atlas (KHA) for Noosa Shire. The combined two highest quality classes based on abundance of the key eucalypt species comprised only 15.7% of the total land area of the Shire. Implications The KHA approach provides a practical and repeatable method for developing koala habitat-suitability mapping for national-, regional- and local-scale conservation and recovery planning purposes.
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Smith, Andrew G., Clive McAlpine, Jonathan Rhodes, Leonie Seabrook, Daniel Lunney, and Greg Baxter. "Are there habitat thresholds in koala occupancy in the semiarid landscapes of the Mulgalands Bioregion?" Wildlife Research 40, no. 5 (2013): 413. http://dx.doi.org/10.1071/wr13010.
Повний текст джерелаАнотація:
Context Habitat thresholds are the critical point(s), below which the probability of occurrence of a species declines. Identifying thresholds assists land managers to decide how much habitat is needed to conserve a species. However, for any given species, a threshold may not exist, or might occur at one scale but not at others, and it may differ across regions. The use of critical habitat thresholds can negatively affect populations if simplified conservation targets for habitat retention are prescribed. This problem is relevant to the koalas where there is evidence of habitat thresholds in mesic regions, but no studies of thresholds in semiarid regions. Aims The aim of the present study was to investigate whether a threshold exists between the occupancy of a site by koalas and habitat variables at both the site and at four landscape scales in the semiarid Mulgalands Bioregion of Queensland, Australia. Methods We modelled habitat relationships using standard and piece-wise logistic regression, and an information-theoretic approach, to determine whether the best model that explained the occupancy–habitat relationships was linear or had a distinct threshold. The site-scale variable was the percentage of primary eucalypt species. The landscape-scale variables included the amount of primary and secondary habitat, and an interaction between them. Key findings There was a threshold relationship between the occurrence of koalas and the percentage of primary trees at the site scale. At the landscape scale, most threshold models failed to converge, and evidence pointed to a linear relationship between habitat amount and koala occupancy. Conclusions Conservation actions for koalas in the Mulgalands Bioregion should concentrate on protecting the primary tree resource for koalas, namely, river red gums (E. camaldulensis). However, the maintenance or restoration of primary and secondary habitat to distances of 1000 m from the creek is important because of the linear relationship between koala presence and habitat amount. Implications As habitat is lost in the semiarid Mulgalands Bioregion, koala occupancy declines. If known thresholds from mesic regions are used to define a minimum amount of habitat to be retained for koalas, conservation of local koala populations may well fail.