Статті в журналах з теми "Water quality Victoria La Trobe River"

Between February 1975 and March 1977, periphyton from artificial substrata (glass microscope slides) and water samples for physicochemical analysis were obtained from eight sites on the lowland section of the La Trobe River, which flows through agricultural, urban and industrial areas. Total organic matter on the slides, estimated as weight loss on ignition, was usually highest in summer or autumn when river flows were low. However, chlorophyll a densities generally peaked in late winter and spring when nitrate concentrations were high, except at a site upstream of major urban and industrial areas, where a summer-autumn increase occurred. Thermal discharges from major power stations had no obvious effect on chlorophyll abundance, but did appear to substantially influence diatom assemblage composition from late summer to early winter, when river temperatures were highest. Downstream of the Morwell River confluence, diatom assemblages were influenced by a sharp increase in dissolved solids concentration and probably also by the grazing activities of snails (Ferrissia petterdi and Physastra gibbosa). The diatom flora at the most downstream site showed some evidence of recovery from thermal effects.

Following severe and prolonged drought, flows in parts of the lower LaTrobe River reached record lows in February 1983. Consequent lack of dilution for wastewater discharges resulted in marked deterioration of water quality, with dissolved oxygen concentration dropping to 2 g m-3 and electrical conductivity rising to 115 mS m-1. Despite these changes there was little alteration in the taxonomic richness or composition of the aquatic macroinvertebrate fauna. Faunal richness in the river downstream from Yallourn was low both before and after the drought, but the causative factors remain obscure.

The robustness of site groupings produced by ordination (DECORANA) and classification (TWINSPAN) techniques to variations in the quality of the raw data was investigated, using two data sets on macroinvertebrate communities from the La Trobe River. Ordinations or classifications based on the presence or absence of species were not substantially different from those based on actual abundance levels. However, when taxonomic discrimination was reduced from the species (or genus) level to the family level, distortions occurred in the resulting ordinations and classifications. In addition, ordinations based on 10 replicates per sample were little different from those based on a subset of 5 or 6 of these replicates; fewer than 4 replicates did not adequately represent the patterns present in the full data set.

Eleven stream stations within the basins of the Bemm, Cann, Thurra, Wingan and Genoa Rivers were sampled during a 3-month interval following a prolonged drought and intense and extensive forest fires. Emphasis was placed on flows resulting from three major storms that occurred during this period. Water-quality impacts of the fires were intermingled with those of the preceding drought, and flow- related comparisons with pre-drought data showed appreciable increases in colour, turbidity, suspended solids, potassium and nitrogen levels in the Bemm River, which was only marginally affected by the fires. In the Cann and Genoa Rivers, with much larger proportions of catchment burnt, electrical conductivity and phosphorus concentrations also rose substantially. Marked depletion of dissolved oxygen (to <6 mg I-1) was unique to streams with burnt catchments, but resulted from stagnant conditions at the end of the drought as well as from changes occurring at the time of the first post-fire storm. The fires had little obvious effect on temperature and pH regimes. Peak turbidities and concentrations of suspended solids and phosphorus were much greater in the Cann and Genoa river systems than elsewhere. Maximum values for these indicators were 130 NTU, 2300 mg I-1 and over 0.8 mg I-1, respectively. In the Thurra and Wingan basins, which were also burnt, stream suspended-solids levels were lower (<200 mg I-1), but solutes sometimes reached very high maxima (indicated by peak electrical conductivities of up to 110 mS m-1). Variations in catchment topography and soils and the relative importance of surface and subsurface flow probably account for these differences. The first post-fire storm produced the highest measured levels of many indicators in most streams, although the greatest flows were associated with the third storm. Nitrite and ammonia were notable exceptions to this generalization. Estimates of catchment exports indicated high sediment yields and moderate to high phosphorus yields from the Cann and Genoa catchments, by comparison with other Australian data.

Abstract In this paper the environment, climate, vegetation, indigenous and European settlement history, stream flow patterns, water quality and water resources development in western Victoria, Australia are studied. The last part of the paper focuses on the MacKenzie River, a tributary of the Wimmera River located on the northern slopes of the Grampians Ranges in western Victoria, Australia. Water release along the MacKenzie River was regulated to improve water quality, stream condition and river health especially in the downstream reaches. The upstream section tends to receive water most days of the year due to releases to secure the requirements of water supply for the city of Horsham and its recreational and conservation values, which is diverted into Mt Zero Channel. Below this the middle and downstream sections receive a more intermittent supply. Annually, a total of 10,000 dam3 of water is released from Wartook Reservoir into the MacKenzie River. Of this volume, only about 4,000 dam3 was released explicitly for environmental purposes. The remaining 6,000 dam3 was released to meet consumptive demands and to transfer water to downstream reservoirs. The empirical data and models showed the lower reaches of the river to be in poor condition under low flows, but this condition improved under flows of 35 dam3 per day, as indicated. The results are presented to tailor discharge and duration of the river flows by amalgamation of consumptive and environmental flows to improve the condition of the stream, thereby supplementing the flows dedicated to environmental outcomes. Ultimately the findings can be used by management to configure consumptive flows that would enhance the ecological condition of the MacKenzie River.

River Nzoia is the largest river draining into the Kenyan portion of Lake Victoria. This river receives both point sources of pollution from industrial and municipal wastes, and non-point sources from agricultural runoff in the catchment. The objective of this study was to simulate dissolved oxygen (DO) and biochemical oxygen demand (BOD) of the middle section of River Nzoia using MIKE 11 model. The model was calibrated using discharge and water quality data for 2009 and validated with March–April 2013 data. The model performance was good with coefficient of determination (R2) values of between 0.845 and 0.995, Nash–Sutcliffe efficiency values of between 0.748 and 0.993 and percent bias of less than 10 for both calibration and validation of electrical conductivity (EC), DO and BOD. EC and BOD values were lower for April compared to March which could be attributed to dilution during high flows. DO values were above the recommended minimum level of 4 mg/l in all the sections of the river in the wet period but some sections had lower than 4 mg/l during low flow period. The government agencies such as Water Resources Management Authority and National Environment Management Authority should enforce the effluent standards to ensure that industries and wastewater treatment plants adhere to the maximum allowable limit for BOD and also improve their treatment efficiencies of wastewater plants so as to improve the quality of River Nzoia which is important in the overall management of the Lake Victoria basin.

Abstract We present the Multi-metric Index of Biotic Integrity methodological approach that allows for the ranking of major river catchments based on pollution status in the Kenyan portion of Lake Victoria, Africa. The study has a broader applicability to all of Lake Victoria, other African Great Lakes, and all lakes that have riverine discharge. The method presented utilizes water quality and environmental data, local knowledge, and pre-existing literature. The parameters considered were sampled from 2016 to 2018 during the dry season (July sampling) and the wet season (March sampling). Separation power of Mann-Whitney U test (p &lt; 0.05) qualified 11 discriminant metrics for both macroinvertebrate and fish samples into the scoring system of 1, 3 and 5 in the formulation of final Multi-metric Index of Biotic Integrity methodological approach. Rivers in the northern section had lower Multi-metric Index of Biotic Integrity methodological approach scores, as compared to southern counterparts. The Multi-metric Index of Biotic Integrity methodological approach ranking herein was validated by community perceptions on pollution levels. River Nzoia catchment emerged as the most polluted, followed by River Yala, River Kuja, and Sondu-Miriu. Siltation, domestic washing, litter and refuse emerged as the main agents of pollution. Management authorities ought to reinforce a balanced utilization of the vital water resources to minimize future impacts, and promote catchment wide practices that ensure ecological health sustainability of the lake ecosystem.

The growing recognition of recreational and amenity demands on water systems introduces a multitude of issues, many of them complex, to the established tasks of water quality management and water management generally. Victorian case studies are presented. They (1) illustrate the range and diversity of situations that can arise in managing competition and enhancing compatibility between traditional water supply objectives and recreational demands. (2) Fluctuation of storage levels, essential to storage operations, detract from recreational value. Recreational and tourism demands upon Lake Hume have grown to threaten traditional operating flexibility. (3) Mokoan is another such instance, but with its supply function in a state of flux, Lake Mokoan provides more scope for a shift in the balance. (4) Salinity management has become an issue in the management of lakes and wetlands when water supply interests and environmental/recreation interests respectively have different perspectives on salt disposal. (5) Recreational use of town supply sources has long been a vexed issue, although marked shifts in the attitudues of many supply authorities have occurred in recent years. (6) Eutrophication of lakes and estuaries raises difficult issues of responsibility and scientific uncertainty, and the water management connection may be tenuous but will attract public attention. (7) The water body attributes valued by specialised recreational interests require definition in terms that water managers can deal with using routine techniques of systems analysis and evaluation. (8) The demands of the fish population and anglers introduce a new perspective in river management and perceptions of instream values are changing markedly. (9) Direct costs of recreational services supplied by water authorities are not fully accounted: allocation choices and fiscal incidence will emerge as issues of significance. (10) These case studies raise only a fraction of the total range of matters that will, in the years to come, tax the technology and political skills of governments and management.

Eutrophication is a serious problem in Lake Victoria as a result of enrichment by nutrients transported by the rivers draining into it. River Nzoia is one of the main rivers draining into the lake. The main aim of this study was to simulate the level of nitrates using MIKE 11 and to establish relationship between nitrogen and phosphorus. The model was calibrated using water quality data for 2009 and validated with March 2013 data and then it was used to simulate nitrate concentration for the wet month of April 2013. The model performance was good with R2 values of between 0.87 and 0.98 and EF values of between 0.73 and 0.96. From the simulations, the effluent discharge from municipal and industrial wastewater ponds elevated the concentration of the nitrates in the river. Analysis of the concentrations of nitrates for wet and dry periods showed significant variations indicating significant contributions from the catchment through run-off. The relationship between total nitrogen and total phosphorus was analysed and found to have a strong positive correlation (r = 0.714, p &lt; 0.05) indicating that both originate from similar sources or are influenced by the same factors such as agriculture.

Urban landscapes have serious impacts on water quality through the disruption of the hydrologic cycle. The Purdue University course, Environmental and Ecological Engineering 49500: Urban Water Projects, seeks to use student-led service-learning projects to improve both water quality and quantity in the Wabash River water-shed. This year, students investigated and implemented strategies to guarantee that previous implementations succeed well into the future. Two students, Victoria Chillscyzn and Madeline McIntosh, were part of a team working with the local nonprofit Home with Hope. Through interviews, a survey, and site visits, the team determined action items to improve the form and function of the installations. A grant was submitted and accepted through Purdue Student Service-Learning Grant Program for Community Service/Service-Learning Projects to fund an additional rain barrel and an edible garden at the nonprofit. Additionally, educational materials and a maintenance schedule were created to bolster care of the site. This course gave the authors the ability to give back to the local community in a meaningful and relevant way.

Evidence for the decline in native fish communities in the lowland Goulburn Catchment has been based primarily on studies investigating changes to environmental conditions as a result of river regulation. The present study aggregates historical fisheries data to spatially compare native fish communities in different parts of the catchment. Multivariate analyses demonstrate that distinctly different community compositions are found in different parts of the catchment. Eildon Dam, a deep release reservoir, has drastically altered the hydrology and water quality of the upper Goulburn River, and ordination analyses show that this has created both physical and artificial barriers to movement of native fish into the main channel. Concurrently, fisheries data from the upper main channel show the community is highly divergent compared to the remaining catchment. Further downstream, Goulburn Weir creates a barrier to fish movement between Lake Nagambie and the lower Goulburn Catchment, and alters the natural hydrological regime. Similarity Percentage analyses demonstrate that these stressors have facilitated the establishment of alien species, which dominate fish abundance in the upper and lower main channels. The current study emphasises the need to explore alternatives for improving management strategies to rehabilitate fish communities throughout the Goulburn Catchment.

The modelling of heavy metals in rivers is highly dependent on hydrodynamics, the transport of suspended particulate matter and the partition between dissolved and particulate phases. This paper presents the development of hydrodynamic model DUFLOW, which is a one dimensional flow and water quality simulation package, that describes the processes governing transformations and transport of heavy metals (Hg, Ni and Cu) along Mabubi River in the Geita wetland. Two monitoring stations were established along Mabubi River at the inlet (MBSP1) and outlet (MBSP2) of the wetland. A set of DUFLOW model inputs representative of the water conditions were collected from the established monitoring stations. The model was calibrated and validated for the prediction of flow and heavy metals (Hg, Ni, and Cu) transport, against a set of measured mean monthly monitoring data. Sensitive model parameters were adjusted within their feasible ranges during calibration to minimize model prediction errors. At the gauging station MBSP2, the calibration results showed the model predicted mean monthly flow within 17% of the measured mean monthly flow while the r2 coefficient and Nash-Sutcliffe (NSE) were 0.83 and 0.79 respectively. At the water quality monitoring station MBSP2, the calibration results showed the model predicted heavy metals (Hg, Ni and Cu) concentrations within 13% and 17% of their respective measured mean monthly concentrations. The mean monthly comparisons r 2 values for heavy metals ranged from 0.75 to 0.88 while the NSE values were between 0.70 and 0.82. The model results and field measurements demonstrated that about 40% of the annual heavy metals loadings which would otherwise reach the Lake Victoria are retained in the wetland. The Mabubi river model can therefore be used for prediction of heavy metals (Hg. Ni and Cu) transformation processes in the Geita wetland.

Abstract. Lakes are of fundamental importance in the Earth system as they support essential environmental and economic services, such as freshwater supply. Streamflow variability and temporal evolution are impacted by the presence of lakes in the river network; therefore, any change in the lake state can induce a modification of the regional hydrological regime. Despite the importance of the impact of lakes on hydrological fluxes and the water balance, a representation of the mass budget is generally not included in climate models and global-scale hydrological modeling platforms. The goal of this study is to introduce a new lake mass module, MLake (Mass-Lake model), into the river-routing model CTRIP to resolve the specific mass balance of open-water bodies. Based on the inherent CTRIP parameters, the development of the non-calibrated MLake model was introduced to examine the influence of such hydrological buffer areas on global-scale river-routing performance. In the current study, an offline evaluation was performed for four river networks using a set of state-of-the-art quality atmospheric forcings and a combination of in situ and satellite measurements for river discharge and lake level observations. The results reveal a general improvement in CTRIP-simulated discharge and its variability, while also generating realistic lake level variations. MLake produces more realistic streamflows both in terms of daily and seasonal correlation. Excluding the specific case of Lake Victoria having low performances, the mean skill score of Kling–Gupta efficiency (KGE) is 0.41 while the normalized information contribution (NIC) shows a mean improvement of 0.56 (ranging from 0.15 to 0.94). Streamflow results are spatially scale-dependent, with better scores associated with larger lakes and increased sensitivity to the width of the lake outlet. Regarding lake level variations, results indicate a good agreement between observations and simulations with a mean correlation of 0.56 (ranging from 0.07 to 0.92) which is linked to the capability of the model to retrieve seasonal variations. Discrepancies in the results are mainly explained by the anthropization of the selected lakes, which introduces high-frequency variations in both streamflows and lake levels that degraded the scores. Anthropization effects are prevalent in most of the lakes studied, but they are predominant for Lake Victoria and are the main cause for relatively low statistical scores for the Nile River However, results on the Angara and the Neva rivers also depend on the inherent gap of ISBA-CTRIP process representation, which relies on further development such as the partitioned energy budget between the snow and the canopy over a boreal zone. The study is a first step towards a global coupled land system that will help to qualitatively assess the evolution of future global water resources, leading to improvements in flood risk and drought forecasting.

The impacts of excessive nitrogen loading to streams in a watershed occur in the receiving waters such as rivers at the outlet of the watershed. To quantify the impacts of land use and management practices on the nitrogen loading at the watershed outlet, simulation models are needed that can both predict the nitrogen loading at the edge of individual fields and predict the fate of nitrogen as it moves through the river network to the watershed outlet. This paper presents the results of a model analysis for describing the processes governing transformations and transport of nitrogen compounds (NO3-N and NH4-N) through Mtakuja River in the Geita wetland. The model was made in Soil and Water Assessment Tool (SWAT), a watershed model developed to assess the impact of land management practices on water, sediment and agricultural chemical yields with varying soils, land use and management conditions. Two monitoring stations namely MTSP1 and MTSP2 were established along Mtakuja River. A set of SWAT model inputs representative of the water conditions was collected from the established monitoring stations. The model was calibrated and validated for the prediction of flow and nitrogen compounds (NO3-N and NH4-N) transport, against a set of measured mean monthly monitoring data. Sensitive model parameters were adjusted within their feasible ranges during calibration to minimize model prediction errors. At the gauging station MTSP2, the calibration results showed that the model predicted mean monthly flow within 18% of the measured mean monthly flow with the r2 coefficient and Nash-Sutcliffe (NSE) were 0.84 and 0.82, respectively. At the water quality monitoring station MTSP2, the calibration results showed the model predicted nitrogen compounds (NO3-N and NH4-N) loadings within 21% and 23% of their respective measured mean monthly loadings. The mean monthly comparisons of r 2 values for nitrogen compounds ranged from 0.77 to 0.81 while the Nash-Sutcliffe Efficiency (NSE) values were between 0.72 and 0.73. The model results and field measurements demonstrated that about 70% of the annual nitrogen compounds loadings which would otherwise reach Lake Victoria are retained in the wetland. The Mtakuja river model can therefore be used for prediction of nitrogen compounds (NO3-N and NH4-N) transformation processes in the Geita wetland.

Eleven experimental sites in the Sustainable Grazing Systems (SGS) national experiment were established in the high rainfall zone (HRZ, >600 mm/year) of Western Australia, Victoria and New South Wales to measure components of the water balance, and pathways of water movement, for a range of pastures from 1997 to 2001. The effect of widely spaced river red gums (Eucalyptus camaldulensis) in pasture, and of belts of plantation blue gums (E. globulus), was studied at 2 of the sites. The soil types tested ranged from Kurosols, Chromosols and Sodosols, with different subsoil permeabilities, to Hydrosols and Tenosols. The pasture types tested were kikuyu (Pennisetum clandestinum), phalaris (Phalaris aquatica), redgrass (Bothriochloa macra) and annual ryegrass (Lolium rigidum), with subterranean clover (Trifolium subterraneum) included. Management variables were set stocking v. rotational grazing, adjustable stocking rates, and level of fertiliser input. Soil, pasture and animal measurements were used to set parameters for the biophysical SGS pasture model, which simulated the long-term effects of soil, pasture type, grazing method and management on water use and movement, using as inputs daily weather data for 31 years from selected sites representing a range of climates. Measurements of mean maximum soil water deficit Sm were used to estimate the probability of surplus water occurring in winter, and the average amount of this surplus, which was highest (97–201 mm/year) for pastures in the cooler, winter-rainfall dominant regions of north-east and western Victoria and lowest (3–11 mm/year) in the warmer, lower rainfall regions of the eastern Riverina and Esperance, Western Australia. Kikuyu in Western Australia achieved the largest increase in Sm compared with annual pasture (55–71 mm), while increases due to phalaris were 18–45 mm, and those of native perennials were small and variable. Long-term model simulations suggested rooting depth was crucial in decreasing deep drainage, to about 50 mm/year for kikuyu rooting to 2.5 m, compared with 70–200 mm/year for annuals rooting to only 0.8 m. Plantation blue gums dried the soil profile to 5.25 m by an average of 400 mm more than kikuyu pasture, reducing the probability of winter surplus water to zero, and eliminating drainage below the root zone. Widely spaced river red gums had a much smaller effect on water use, and would need to number at least 14 trees per hectare to achieve extra soil drying of about 50 mm over a catchment. Soil type affected water use primarily through controlling the rooting depth of the vegetation, but it also changed the partitioning of surplus water between runoff and deep drainage. Strongly duplex soils such as Sodosols shed 50% or more surplus water as runoff, which is important for flushing streams, provided the water is of good quality. Grazing method and pasture management had only a marginal effect in increasing water use, but could have a positive effect on farm profitability through increased livestock production per hectare and improved persistence of perennial species.

Abstract. The Hydrologic Reference Stations is a network of 467 high-quality streamflow gauging stations across Australia that is developed and maintained by the Bureau of Meteorology as part of an ongoing responsibility under the Water Act 2007. The main objectives of the service are to observe and detect climate-driven changes in observed streamflow and to provide a quality-controlled dataset for research. We investigate trends and step changes in streamflow across Australia in data from all 467 streamflow gauging stations. Data from 30 to 69 years in duration ending in February 2019 were examined. We analysed data in terms of water-year totals and for the four seasons. The commencement of the water year varies across the country – mainly from February–March in the south to September–October in the north. We summarized our findings for each of the 12 drainage divisions defined by Australian Hydrological Geospatial Fabric (Geofabric) and for continental Australia as a whole. We used statistical tests to detect and analyse linear and step changes in seasonal and annual streamflow. Monotonic trends were detected using modified Mann–Kendall (MK) tests, including a variance correction approach (MK3), a block bootstrap approach (MK3bs) and a long-term persistence approach (MK4). A nonparametric Pettitt test was used for step-change detection and identification. The regional significance of these changes at the drainage division scale was analysed and synthesized using a Walker test. The Murray–Darling Basin, home to Australia's largest river system, showed statistically significant decreasing trends for the region with respect to the annual total and all four seasons. Drainage divisions in New South Wales, Victoria and Tasmania showed significant annual and seasonal decreasing trends. Similar results were found in south-western Western Australia, South Australia and north-eastern Queensland. There was no significant spatial pattern observed in central nor mid-west Western Australia, with one possible explanation for this being the sparse density of streamflow stations and/or the length of the datasets available. Only the Tanami–Timor Sea Coast drainage division in northern Australia showed increasing trends and step changes in annual and seasonal streamflow that were regionally significant. Most of the step changes occurred during 1970–1999. In the south-eastern part of Australia, the majority of the step changes occurred in the 1990s, before the onset of the “Millennium Drought”. Long-term monotonic trends in observed streamflow and its regional significance are consistent with observed changes in climate experienced across Australia. The findings of this study will assist water managers with long-term infrastructure planning and management of water resources under climate variability and change across Australia.

Abstract. The Soil and Water Assessment Tool (SWAT) is an integrated river basin model that is widely applied within the Nile basin. Up to date, more than 20 peer-reviewed papers describe the use of SWAT for a variety of problems in the upper Nile basin countries, such as erosion modelling, land use and climate change impact modelling and water resources management. The majority of the studies are focused on locations in the tropical highlands in Ethiopia and around Lake Victoria. The popularity of SWAT is attributed to the fact that the tool is freely available and that it is readily applicable through the development of geographic information system (GIS) based interfaces and its easy linkage to sensitivity, calibration and uncertainty analysis tools. The online and free availability of basic GIS data that are required for SWAT made its applicability more straightforward even in data-scarce areas. However, the easy use of SWAT may not always lead to appropriate models which is also a consequence of the quality of the available free databases in these regions. In this paper, we aim at critically reviewing the use of SWAT in the context of the modelling purpose and problem descriptions in the tropical highlands of the Nile basin countries. To evaluate the models that are described in journal papers, a number of criteria are used to evaluate the model set-up, model performances, physical representation of the model parameters, and the correctness of the hydrological model balance. On the basis of performance indicators, the majority of the SWAT models were classified as giving satisfactory to very good results. Nevertheless, the hydrological mass balances as reported in several papers contained losses that might not be justified. Several papers also reported the use of unrealistic parameter values. More worrying is that many papers lack this information. For this reason, most of the reported SWAT models have to be evaluated critically. An important gap is the lack of attention that is given to the vegetation and crop processes. None of the papers reported any adaptation to the crop parameters, or any crop-related output such as leaf area index, biomass or crop yields. A proper simulation of the land cover is important for obtaining correct runoff generation, evapotranspiration and erosion computations. It is also found that a comparison of SWAT applications on the same or similar case study but by different research teams and/or model versions resulted in very different results. It is therefore recommended to find better methods to evaluate the representativeness of the distributed processes and parameters (especially when land use studies are envisaged) or predictions of the future through environmental changes. The main recommendation is that more details on the model set-up, the parameters and outputs should be provided in the journal papers or supplementary materials in order to allow for a more stringent evaluation of these models.

The impact of agricultural intensification on soil degradation now is occurring in tropical countries. The objective of this study was to determine the effect of long-term tillage and N fertilization on soil properties and crop yields in corn-soybean rotation. This long-term study which initiated since 1987 was carried out on a Typic Fragiudult soil at Politeknik Negeri Lampung, Sumatra (105o13’45.5"-105o13’48.0"E, 05o21’19.6"-05o21’19.7"S) in 2010 and 2011. A factorial experiment was arranged in a randomized block design with four replications. The first factor was tillage system namely intensive tillage (IT) and conservation tillage (CT) which consist of minimum tillage (MT) and no-tillage (NT); while the second factor was N fertilization with rates of 0, 100 and 200 kg N ha-1 applied for corn, and 0, 25, and 50 kg N ha-1 for soybean. The results showed that bulk density and soil strength at upper layer after 24 years of cropping were similar among treatments, but the soil strength under IT at 50-60 cm depth was 28.2% higher (p<0.05) than NT. Soil moisture and temperature under CT at 0-5 cm depth were respectively 38.1% and 4.5% higher (p<0.05) than IT. High N rate decreased soil pH at 0-20 cm depth as much as 10%, but increased total soil N at 0-5 cm depth as much as 19% (p<0.05). At 0-10 cm depth, MT with no N had highest exchangeable K, while IT with medium N rate had the lowest (p<0.05). At 0-5 cm depth, MT with no N had highest exchangeable Ca, but it had the lowest (p<0.05) if combined with higher N rate. Microbial biomass C throughout the growing season for NT was consistently highest and it was 14.4% higher (p<0.05) than IT. Compared to IT, Ap horizon of CT after 24 years of cropping was deeper, with larger soil structure and more abundance macro pores. Soybean and corn yields for long-term CT were 64.3% and 31.8% higher (p<0.05) than IT, respectively. Corn yield for long-term N with rate of 100 kg N ha-1 was 36.4% higher (p<0.05) than with no N.Keywords: Conservation tillage, crop yields, N fertilization, soil properties[How to Cite: Utomo M, IS Banuwa, H Buchari, Y Anggraini and Berthiria. 2013.Long-term Tillage and Nitrogen Fertilization Effects on Soil Properties and Crop Yields. J Trop Soils 18 (2): 131-139. Doi: 10.5400/jts.2013.18.2.131][Permalink/DOI: www.dx.doi.org/10.5400/jts.2013.18.2.131] REFERENCESAl-Kaisi and X Yin. 2005. Tillage and crop residue effects on soil carbon dioxide emission in corn- soybean rotation. J Environ Qual 34: 437-445. Pub Med. Barak P, BO Jobe, AR Krueger, LA Peterson and DA Laird. 1997. Effects of long-term soilacidification due to nitrogen inputs in Wisconsin. Plant Soil 197: 61-69.Blake GR and KH Hartge. 1986. Bulk density. In: A Klute (ed). Methods of Soil Analysis. ASA and SSSA. 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Streams and rivers are globally threatened ecosystems because of increasing levels of exploitation, habitat degradation and other anthropogenic pressures. In the Lake Victoria Basin (LVB) in East Africa, these threats are mostly caused by unsustainable land use; however, the monitoring of ecological integrity of river systems has been hampered by a lack of locally developed indices. This study assessed the health of four rivers (Nzoia, Nyando, Sondu–Miriu and Mara) on the Kenyan side of the LVB using physicochemical water quality parameters and a fish-based index of biotic integrity (IBI). Fish tolerance ranking was derived from principal component analysis of water quality parameters, and the concept of niche breadth (NB). The relationship between fish species and water quality parameters was examined with canonical correspondence analysis, whereas community metrics and stressors were evaluated through Pearson network correlation analysis. Fish species richness, trophic structures, taxonomic composition and species tolerance were used to generate the metrics for fish-based IBI. NB showed that most of the fish species were moderately tolerant to poor water. Moderately tolerant and intolerant fish species were negatively correlated with a high level of organic loading in the Mara River. Fish-based IBI scores for the rivers ranged from 26 to 34, with Sondu–Miriu scoring the lowest. Our results show that the cumulative effect of stressors can adequately rank fish species tolerance according to the disturbance gradients and further develop regional metrics to assess river health. Despite the fact that fish communities are declining, continual management and enforcement of environmental regulations are important, with conservation and management of headwaters and low-order streams being essential while they are still species rich.

River Nzoia in Kenya, due to its role in transporting industrial and municipal wastes in addition to agricultural runoff to Lake Victoria, is vulnerable to pollution. Dissolved oxygen is one of the most important indicators of water pollution. Artificial neural network (ANN) has gained popularity in water quality forecasting. This study aimed at assessing the ability of ANN to predict dissolved oxygen using four input variables of temperature, turbidity, pH and electrical conductivity. Multilayer perceptron network architecture was used in this study. The data consisted of 113 monthly values for the input variables and output variable from 2009–2013 which were split into training and testing datasets. The results obtained during training and testing were satisfactory with R2 varying from 0.79 to 0.94 and RMSE values ranging from 0.34 to 0.64 mg/l which imply that ANN can be used as a monitoring tool in the prediction of dissolved oxygen for River Nzoia considering the non-correlational relationship of the input and output variables. The dissolved oxygen values follow seasonal trend with low values during dry periods.

AbstractLake Victoria is the second largest freshwater lake and the largest tropical lake in the world. The transboundary lake has the fastest growing population in its catchment, which can impact the water and sediment quality. To determine the extent of anthropogenic effects on sediment quality in the Ugandan part of Lake Victoria, the contents and binding behaviour of trace elements were analysed, as well as organic matter and phosphorus in different sediment layers of both deep and coastal sediments near the coastal cities of Entebbe, Kampala and Jinja. The data were assessed using the German LAWA criteria for trace-element pollution, the Geo-Index, Cluster- and Factor analyses. Mostly, no critical trace-element contamination in the sediments of the investigated area was observed. However, changes in element distributions caused by anthropogenic influences from around the lake were detected, like higher contents of Cu, Ti and V in near shore sediments with urban surrounding. Near Jinja, industrial wastewaters caused particularly elevated contents of Cu in the sediments (70–121 mg/kg, 3.5–6 times the geogenic background), exceeding the LAWA criteria and potentially harming the aquatic habitat. In addition, temporally growing organic matter contents in the lake sediments near the estuary of River Nzoia (from 4.2 to 17.6% in around 60 years) due to increased soil erosion in the river’s catchment area and blooms of the water hyacinth became visible. This study demonstrates that the whole catchment area is responsible to ensure a healthy aquatic ecosystem in Lake Victoria.

Rwizi River, often called the life-line river, supports over five million people in Western Uganda and is a major contributor of freshwater to Lake Victoria. Surrounded by a large and rapidly growing population, the river has suffered anthropogenic disturbances whose impact on the integrity of the system is a subject of concern. Aquatic macroinvertebrates, used globally to monitor both short- and long-term environmental conditions, were thus used to assess the biological integrity of streams and channels draining into the river system. Macroinvertebrates were sampled for six months in 2017 encompassing the wet and dry seasons using the kick net sampling method. The macroinvertebrates were identified morphologically using peer reviewed identification keys and their pollution sensitivity scored using the Tanzanian River Scoring System (TARISS). The Shannon diversity index was computed per site and related to average score per taxon (ASPT). We collected a total of 5442 macroinvertebrates belonging to 54 families dominated by Chironomidae (29.1%). Macroinvertebrate diversity increased with ASPT (r = 0.57; N = 131; P = 0.000). The water quality was generally poor and was not affected by the season (t = 1.03; df = 64; P = 0.303) though sites had different water quality (F = 11.32; df = 20; P = 0.000) attributed the degree of anthropogenic disturbance. We concluded that river Rwizi system is highly degraded and thus recommend restoration of the entire catchment. Aquatic macroinvertebrates are good indicators of long-term conditions but less sensitive to short-term changes. Multiple approaches, biological and chemical, are encouraged during the restoration process.

Climate change is one of the greatest threats to mankind’s survival in the twenty-first century, and has a number of consequences for the Nzoia River Basin's drinking water resources, including increased dry spells, flooding associated with heavy rainfall events, degraded water quality, and changes in water demand. This study examines the impact of climate change on drinking water resources in Nzoia River Basin, Kenya. A cross-sectional survey design was used in this study. Busia (lower), Kakamega (middle) and Trans Nzoia (upper) were the three counties chosen randomly for survey in the basin. The research was conducted from May to September of 2017. The 400 households surveyed by questionnaires were chosen using multistage random sampling. The Author conducted the questionnaire survey with the help of trained University students. The interviewers also utilized observation checklists to gather information on the households and the community. The study results revealed the climate change drivers affecting drinking water resources in the basin as changes in rainfall patterns, increasing temperatures and seasonal Lake Victoria level risings. These drivers have been reviewed and ranked in order of severity across the basin by a team of water and climate change experts through in-depth interviews and brainstorming sessions. The influence of climate change on infrastructure investment initiatives is becoming increasingly important at County and National Government levels in the basin. National and County governments in the basin should begin re-evaluating drinking water development initiatives by including climate change into infrastructure design, capital investment, service provision planning, and operation and maintenance. Most water utilities face climate change variability and uncertainty in their daily operations and long-term planning. Most utilities are starting to consider the impact of climate change on their water supplies, as well as the technical, financial, operational, and institutional ramifications. These difficulties are exacerbated by the fact that utilities have more pressing needs, such as increasing coverage and dealing with high levels of non-revenue water, all of which compete with the development of climate change adaptation solutions.

The traditional German tale of the Pied Piper of Hamelin inhabits an ambiguous narrative borderland, a liminal space between fact and fiction, fantasy and horror, concrete details and elusive mystery. In his study of the Pied Piper in Tradition and Innovation in Folk Literature, Wolfgang Mieder describes how manuscripts and other evidence appear to confirm the historical base of the story. Precise details from a fifteenth-century manuscript, based on earlier sources, specify that in 1284 on the 26th of June, the feast-day of Saints John and Paul, 130 children from Hamelin were led away by a piper clothed in many colours to the Koppen Hill, and there vanished (Mieder 48). Later manuscripts add details familiar today, such as a plague of rats and a broken bargain with burghers as a motive for the Piper’s actions, while in the seventeenth century the first English-language version advances what might also be the first attempt at a “rational” explanation for the children’s disappearance, claiming that they were taken to Transylvania. The uncommon pairing of such precise factual detail with enigmatic mystery has encouraged many theories. These have ranged from references to the Children’s Crusade, or other religious fervours, to the devastation caused by the Black Death, from the colonisation of Romania by young German migrants to a murderous rampage by a paedophile. Fictional interpretations of the story have multiplied, with the classic versions of the Brothers Grimm and Robert Browning being most widely known, but with contemporary creators exploring the theme too. This includes interpretations in Hamelin itself. On 26 June 2015, in Hamelin Museum, I watched a wordless five-minute play, entirely performed not by humans but by animatronic stylised figures built out of scrap iron, against a montage of multilingual, confused voices and eerie music, with the vanished children represented by a long line of small empty shirts floating by. The uncanny, liminal nature of the story was perfectly captured. Australia is a world away from German fairy tale mysteries, historically, geographically, and culturally. Yet, as Lisa M. Fiander has persuasively argued, contemporary Australian fiction has been more influenced by fairy tales than might be assumed, and in this essay it is proposed that major motifs from the Pied Piper appear in several Australian novels, transformed not only by distance of setting and time from that of the original narrative, but also by elements specific to the Australian imaginative space. These motifs are lost children, the enigmatic figure of the Piper himself, and the power of a very particular place (as Hamelin and its Koppen Hill are particularised in the original tale). Three major Australian novels will be examined in this essay: Joan Lindsay’s Picnic at Hanging Rock (1967), Christopher Koch’s The Doubleman (1985), and Ursula Dubosarsky’s The Golden Day (2011). Dubosarsky’s novel was written for children; both Koch’s and Lindsay’s novels were published as adult fiction. In each of these works of fiction, the original tale’s motifs have been developed and transformed to express unique evocations of the Pied Piper theme. As noted by Fiander, fiction writers are “most likely to draw upon fairy tales when they are framing, in writing, a subject that generates anxiety in their culture” (158). Her analysis is about anxieties of place within Australian fiction, but this insight could be usefully extended to the motifs which I have identified as inherent in the Pied Piper story. Prominent among these is the lost children motif, whose importance in the Australian imagination has been well-established by scholars such as Peter Pierce. Pierce’s The Country of Lost Children: An Australian Anxiety explores this preoccupation from the earliest beginnings of European settlement, through analysis of fiction, newspaper reports, paintings, and films. As Pierce observed in a later interview in the Sydney Morning Herald (Knox), over time the focus changed from rural children and the nineteenth-century fear of the vast impersonal nature of the bush, where children of colonists could easily get lost, to urban children and the contemporary fear of human predators.In each of the three novels under examination in this essay, lost children—whether literal or metaphorical—feature prominently. Writer Carmel Bird, whose fiction has also frequently centred on the theme of the lost child, observes in “Dreaming the Place” that the lost child, the stolen child – this must be a narrative that is lodged in the heart and imagination, nightmare and dream, of all human beings. In Australia the nightmare became reality. The child is the future, and if the child goes, there can be no future. The true stories and the folk tales on this theme are mirror images of each other. (7) The motif of lost children—and of children in danger—is not unique to the Pied Piper. Other fairy tales, such as Hansel and Gretel and Little Red Riding Hood, contain it, and it is those antecedents which Bird cites in her essay. But within the Pied Piper story it has three features which distinguish it from other traditional tales. First, unlike in the classic versions of Hansel and Gretel or Red Riding Hood, the children do not return. Neither are there bodies to find. The children have vanished into thin air, never to be seen again. Second, it is not only parents who have lost them, but an entire community whose future has been snatched away: a community once safe, ordered, even complacent, traumatised by loss. The lack of hope, of a happy ending for anyone, is striking. And thirdly, the children are not lost or abandoned or even, strictly speaking, stolen: they are lured away, semi-willingly, by the central yet curiously marginal figure of the Piper himself. In the original story there is no mention of motive and no indication of malice on the part of the Piper. There is only his inexplicable presence, a figure out of fairy folklore appearing in the midst of concrete historical dates and numbers. Clearly, he links to the liminal, complex world of the fairies, found in folklore around the world—beings from a world close to the human one, yet alien. Whimsical and unpredictable by human standards, such beings are nevertheless bound by mysteriously arbitrary rules and taboos, and haunt the borders of the human world, disturbing its rational edges and transforming lives forever. It is this sense of disturbance, that enchanting yet frightening sudden shifting of the border of reality and of the comforting order of things, the essence of transformation itself, which can also be seen at the core of the three novels under examination in this essay, with the Piper represented in each of them but in different ways. The third motif within the Pied Piper is a focus on place as a source of uncanny power, a theme which particularly resonates within an Australian context. Fiander argues that if contemporary British fiction writers use fairy tale to explore questions of community and alienation, and Canadian fiction writers use it to explore questions of identity, then Australian writers use it to explore the unease of place. She writes of the enduring legacy of Australia’s history “as a settler colony which invests the landscape with strangeness for many protagonists” (157). Furthermore, she suggests that “when Australian fiction writers, using fairy tales, describe the landscape as divorced from reality, they might be signalling anxiety about their own connection with the land which had already seen tens of thousands of years of occupation when Captain James Cook ‘found’ it in 1770” (160). I would argue, however, that in the case of the Pied Piper motifs, it is less clear that it is solely settler anxieties which are driving the depiction of the power of place in these three novels. There is no divorce from reality here, but rather an eruption of the metaphysical potency of place within the usual, “normal” order of reality. This follows the pattern of the original tale, where the Piper and all the children, except for one or two stragglers, disappear at Koppen Hill, vanishing literally into the hill itself. In traditional European folklore, hollow hills are associated with fairies and their uncanny power, but other places, especially those of water—springs, streams, even the sea—may also be associated with their liminal world (in the original tale, the River Weser is another important locus for power). In Joan Lindsay’s Picnic at Hanging Rock, it is another outcrop in the landscape which holds that power and claims the “lost children.” Inspired partly by a painting by nineteenth-century Australian artist William Ford, titled At the Hanging Rock (1875), depicting a group of elegant people picnicking in the bush, this influential novel, which inspired an equally successful film adaptation, revolves around an incident in 1900 when four girls from Appleyard College, an exclusive school in Victoria, disappear with one of their teachers whilst climbing Hanging Rock, where they have gone for a picnic. Only one of their number, a girl called Irma, is ever found, and she has no memory of how and why she found herself on the Rock, and what has happened to the others. This inexplicable event is the precursor to a string of tragedies which leads to the violent deaths of several people, and which transforms the sleepy and apparently content little community around Appleyard College into a centre of loss, horror, and scandal.Told in a way which makes it appear that the novelist is merely recounting a true story—Lindsay even tells readers in an author’s note that they must decide for themselves if it is fact or fiction—Picnic at Hanging Rock shares the disturbingly liminal fact-fiction territory of the Piper tale. Many readers did in fact believe that the novel was based on historical events and combed newspaper files, attempting to propound ingenious “rational” explanations for what happened on the Rock. Picnic at Hanging Rock has been the subject of many studies, with the novel being analysed through various prisms, including the Gothic, the pastoral, historiography, and philosophy. In “Fear and Loathing in the Australian Bush,” Kathleen Steele has depicted Picnic at Hanging Rock as embodying the idea that “Ordered ‘civilisation’ cannot overcome the gothic landscapes of settler imaginations: landscapes where time and people disappear” (44). She proposes that Lindsay intimates that the landscape swallows the “lost children” of the novel because there is a great absence in that place: that of Aboriginal people. In this reading of the novel, it is that absence which becomes, in a sense, a malevolent presence that will reach out beyond the initial disappearance of the three people on the Rock to destroy the bonds that held the settler community together. It is a powerfully-made argument, which has been taken up by other scholars and writers, including studies which link the theme of the novel with real-life lost-children cases such as that of Azaria Chamberlain, who disappeared near another “Rock” of great Indigenous metaphysical potency—Uluru, or Ayers Rock. However, to date there has been little exploration of the fairy tale quality of the novel, and none at all of the striking ways in which it evokes Pied Piper motifs, whilst transforming them to suit the exigencies of its particular narrative world. The motif of lost children disappearing from an ordered, safe, even complacent community into a place of mysterious power is extended into an exploration of the continued effects of those disappearances, depicting the disastrous impact on those left behind and the wider community in a way that the original tale does not. There is no literal Pied Piper figure in this novel, though various theories are evoked by characters as to who might have lured the girls and their teacher, and who might be responsible for the disappearances. Instead, there is a powerful atmosphere of inevitability and enchantment within the landscape itself which both illustrates the potency of place, and exemplifies the Piper’s hold on his followers. In Picnic at Hanging Rock, place and Piper are synonymous: the Piper has been transformed into the land itself. Yet this is not the “vast impersonal bush,” nor is it malevolent or vengeful. It is a living, seductive metaphysical presence: “Everything, if only you could see it clearly enough, is beautiful and complete . . .” (Lindsay 35). Just as in the original tale, the lost children follow the “Piper” willingly, without regret. Their disappearance is a happiness to them, in that moment, as it is for the lost children of Hamelin, and quite unlike how it must be for those torn apart by that loss—the community around Appleyard, the townspeople of Hamelin. Music, long associated with fairy “takings,” is also a subtle feature of the story. In the novel, just before the luring, Irma hears a sound like the beating of far-off drums. In the film, which more overtly evokes fairy tale elements than does the novel, it is noteworthy that the music at that point is based on traditional tunes for Pan-pipes, played by the great Romanian piper Gheorge Zamfir. The ending of the novel, with questions left unanswered, and lives blighted by the forever-inexplicable, may be seen as also following the trajectory of the original tale. Readers as much as the fictional characters are left with an enigma that continues to perplex and inspire. Picnic at Hanging Rock was one of the inspirations for another significant Australian fiction, this time a contemporary novel for children. Ursula Dubosarsky’s The Golden Day (2011) is an elegant and subtle short novel, set in Sydney at an exclusive girls’ school, in 1967. Like the earlier novel, The Golden Day is also partly inspired by visual art, in this case the Schoolgirl series of paintings by Charles Blackman. Combining a fairy tale atmosphere with historical details—the Vietnam War, the hanging of Ronald Ryan, the drowning of Harold Holt—the story is told through the eyes of several girls, especially one, known as Cubby. The Golden Day echoes the core narrative patterns of the earlier novel, but intriguingly transformed: a group of young girls goes with their teacher on an outing to a mysterious place (in this case, a cave on the beach—note the potent elements of rock and water, combined), and something inexplicable happens which results in a disappearance. Only this time, the girls are much younger than the characters of Lindsay’s novel, pre-pubertal in fact at eleven years old, and it is their teacher, a young, idealistic woman known only as Miss Renshaw, who disappears, apparently into thin air, with only an amber bead from her necklace ever found. But it is not only Miss Renshaw who vanishes: the other is a poet and gardener named Morgan who is also Miss Renshaw’s secret lover. Later, with the revelation of a dark past, he is suspected in absentia of being responsible for Miss Renshaw’s vanishment, with implications of rape and murder, though her body is never found. Morgan, who could partly figure as the Piper, is described early on in the novel as having “beautiful eyes, soft, brown, wet with tears, like a stuffed toy” (Dubosarsky 11). This disarming image may seem a world away from the ambiguously disturbing figure of the legendary Piper, yet not only does it fit with the children’s naïve perception of the world, it also echoes the fact that the children in the original story were not afraid of the Piper, but followed him willingly. However, that is complicated by the fact that Morgan does not lure the children; it is Miss Renshaw who follows him—and the children follow her, who could be seen as the other half of the Piper. The Golden Day similarly transforms the other Piper motifs in its own original way. The children are only literally lost for a short time, when their teacher vanishes and they are left to make their own way back from the cave; yet it could be argued that metaphorically, the girls are “lost” to childhood from that moment, in terms of never being able to go back to the state of innocence in which they were before that day. Their safe, ordered school community will never be the same again, haunted by the inexplicability of the events of that day. Meanwhile, the exploration of Australian place—the depiction of the Memorial Gardens where Miss Renshaw enjoins them to write poetry, the uncomfortable descent over rocks to the beach, and the fateful cave—is made through the eyes of children, not the adolescents and adults of Picnic at Hanging Rock. The girls are not yet in that liminal space which is adolescence and so their impressions of what the places represent are immediate, instinctive, yet confused. They don’t like the cave and can’t wait to get out of it, whereas the beach inspires them with a sense of freedom and the gardens with a sense of enchantment. But in each place, those feelings are mixed both with ordinary concerns and with seemingly random associations that are nevertheless potently evocative. For example, in the cave, Cubby senses a threateningly weightless atmosphere, a feeling of reality shifting, which she associates, apparently confusedly, with the hanging of Ronald Ryan, reported that very day. In this way, Dubosarsky subtly gestures towards the sinister inevitability of the following events, and creates a growing tension that will eventually fade but never fully dissipate. At the end, the novel takes an unexpected turn which is as destabilising as the ending of the Pied Piper story, and as open-ended in its transformative effects as the original tale: “And at that moment Cubby realised she was not going to turn into the person she had thought she would become. There was something inside her head now that would make her a different person, though she scarcely understood what it was” (Dubosarsky 148). The eruption of the uncanny into ordinary life will never leave her now, as it will never leave the other girls who followed Miss Renshaw and Morgan into the literally hollow hill of the cave and emerged alone into a transformed world. It isn’t just childhood that Cubby has lost but also any possibility of a comforting sense of the firm borders of reality. As in the Pied Piper, ambiguity and loss combine to create questions which cannot be logically answered, only dimly apprehended.Christopher Koch’s 1985 novel The Doubleman, winner of the Miles Franklin Award, also explores the power of place and the motif of lost children, but unlike the other two novels examined in this essay depicts an actual “incarnated” Piper motif in the mysteriously powerful figure of Clive Broderick, brilliant guitarist and charismatic teacher/guru, whose office, significantly, is situated in a subterranean space of knowledge—a basement room beneath a bookshop. Both central yet peripheral to the main action of the novel, touched with hints of the supernatural which never veer into overt fantasy, Broderick remains an enigma to the end. Set, like The Golden Day, in the 1960s, The Doubleman is narrated in the first person by Richard Miller, in adulthood a producer of a successful folk-rock group, the Rymers, but in childhood an imaginative, troubled polio survivor, with a crutch and a limp. It is noteworthy here that in the Grimms’ version of the Pied Piper, two children are left behind, despite following the Piper: one is blind, one is lame. And it is the lame boy who tells the townspeople what he glimpsed at Koppen Hill. In creating the character of Broderick, the author blends the traditional tropes of the Piper figure with Mephistophelian overtones and a strong influence from fairy lore, specifically the idea of the “doubleman,” here drawn from the writings of seventeenth-century Scottish pastor, the Reverend Robert Kirk of Aberfoyle. Kirk’s 1691 book The Secret Commonwealth of Elves, Fauns and Fairies is the earliest known serious attempt at objective description of the fairy beliefs of Gaelic-speaking Highlanders. His own precisely dated life-story and ambiguous end—it is said he did not die but is forever a prisoner of the fairies—has eerie parallels to the Piper story. “And there is the uncanny, powerful and ambiguous fact of the matter. Here is a man, named, born, lived, who lived a fairy story, really lived it: and in the popular imagination, he lives still” (Masson).Both in his creative and his non-fiction work Koch frequently evoked what he called “the Otherland,” which he depicted as a liminal, ambiguous, destabilising but nevertheless very real and potent presence only thinly veiled by the everyday world. This Otherland is not the same in all his fictions, but is always part of an actual place, whether that be Java in The Year of Living Dangerously, Hobart and Sydney in The Doubleman, Tasmania, Vietnam and Cambodia in Highways to a War, and Ireland and Tasmania in Out of Ireland. It is this sense of the “Otherland” below the surface, a fairy tale, mythical realm beyond logic or explanation, which gives his work its distinctive and particular power. And in The Doubleman, this motif, set within a vividly evoked real world, complete with precise period detail, transforms the Piper figure into one which could easily appear in a Hobart lane, yet which loses none of its uncanny potency. As Noel Henricksen writes in his study of Koch’s work, Island and Otherland, “Behind the membrane of Hobart is Otherland, its manifestations a spectrum stretched between the mystical and the spiritually perverted” (213).This is Broderick’s first appearance, described through twelve-year-old Richard Miller’s eyes: Tall and thin in his long dark overcoat, he studied me for the whole way as he approached, his face absolutely serious . . . The man made me uneasy to a degree for which there seemed to be no explanation . . . I was troubled by the notion that he was no ordinary man going to work at all: that he was not like other people, and that his interest couldn’t be explained so simply. (Koch, Doubleman 3)That first encounter is followed by another, more disturbing still, when Broderick speaks to the boy, eyes fixed on him: “. . . hooded by drooping lids, they were entirely without sympathy, yet nevertheless interested, and formidably intelligent” (5).The sense of danger that Broderick evokes in the boy could be explained by a sinister hint of paedophilia. But though Broderick is a predator of sorts on young people, nothing is what it seems; no rational explanation encompasses the strange effect of his presence. It is not until Richard is a young man, in the company of his musical friend Brian Brady, that he comes across Broderick again. The two young men are looking in the window of a music shop, when Broderick appears beside them, and as Richard observes, just as in a fairy tale, “He didn’t seem to have changed or aged . . .” (44). But the shock of his sudden re-appearance is mixed with something else now, as Broderick engages Brady in conversation, ignoring Richard, “. . . as though I had failed some test, all that time ago, and the man had no further use for me” (45).What happens next, as Broderick demonstrates his musical prowess, becomes Brady’s teacher, and introduces them to his disciple, young bass player Darcy Burr, will change the young men’s lives forever and set them on a path that leads both to great success and to living nightmare, even after Broderick’s apparent disappearance, for Burr will take on the Piper’s mantle. Koch’s depiction of the lost children motif is distinctively different to the other two novels examined in this essay. Their fate is not so much a mystery as a tragedy and a warning. The lost children of The Doubleman are also lost children of the sixties, bright, talented young people drawn through drugs, immersive music, and half-baked mysticism into darkness and horrifying violence. In his essay “California Dreaming,” published in the collection Crossing the Gap, Koch wrote about this subterranean aspect of the sixties, drawing a connection between it and such real-life sinister “Pipers” as Charles Manson (60). Broderick and Burr are not the same as the serial killer Manson, of course; but the spell they cast over the “lost children” who follow them is only different in degree, not in kind. In the end of the novel, the spell is broken and the world is again transformed. Yet fittingly it is a melancholy transformation: an end of childhood dreams of imaginative potential, as well as dangerous illusions: “And I knew now that it was all gone—like Harrigan Street, and Broderick, and the district of Second-Hand” (Koch, Doubleman 357). The power of place, the last of the Piper motifs, is also deeply embedded in The Doubleman. In fact, as with the idea of Otherland, place—or Island, as Henricksen evocatively puts it—is a recurring theme in Koch’s work. He identified primarily and specifically as a Tasmanian writer rather than as simply Australian, pointing out in an essay, “The Lost Hemisphere,” that because of its landscape and latitude, different to the mainland of Australia, Tasmania “genuinely belongs to a different region from the continent” (Crossing the Gap 92). In The Doubleman, Richard Miller imbues his familiar and deeply loved home landscape with great mystical power, a power which is both inherent within it as it is, but also expressive of the Otherland. In “A Tasmanian Tone,” another essay from Crossing the Gap, Koch describes that tone as springing “from a sense of waiting in the landscape: the tense yet serene expectancy of some nameless revelation” (118). But Koch could also write evocatively of landscapes other than Tasmanian ones. The unnerving climax of The Doubleman takes place in Sydney—significantly, as in The Golden Day, in a liminal, metaphysically charged place of rocks and water. That place, which is real, is called Point Piper. In conclusion, the original tale’s three main motifs—lost children, the enigma of the Piper, and the power of place—have been explored in distinctive ways in each of the three novels examined in this article. Contemporary Australia may be a world away from medieval Germany, but the uncanny liminality and capacious ambiguity of the Pied Piper tale has made it resonate potently within these major Australian fictions. Transformed and transformative within the Australian imagination, the theme of the Pied Piper threads like a faintly-heard snatch of unearthly music through the apparently mimetic realism of the novels, destabilising readers’ expectations and leaving them with subversively unanswered questions. ReferencesBird, Carmel. “Dreaming the Place: An Exploration of Antipodean Narratives.” Griffith Review 42 (2013). 1 May 2016 <https://griffithreview.com/articles/dreaming-the-place/>.Dubosarsky, Ursula. The Golden Day. Sydney: Allen and Unwin, 2011.Fiander, Lisa M. “Writing in A Fairy Story Landscape: Fairy Tales and Contemporary Australian Fiction.” Journal of the Association for the Study of Australian Literature 2 (2003). 30 April 2016 <http://openjournals.library.usyd.edu.au/index.php/JASAL/index>.Henricksen, Noel. Island and Otherland: Christopher Koch and His Books. Melbourne: Educare, 2003.Knox, Malcolm. “A Country of Lost Children.” Sydney Morning Herald 15 Aug. 2009. 1 May 2016 <http://www.smh.com.au/national/a-country-of-lost-children-20090814-el8d.html>.Koch, Christopher. The Doubleman. 1985. Sydney: Minerva, 1996.Koch, Christopher. Crossing the Gap: Memories and Reflections. 1987. Sydney: Vintage, 2000. Lindsay, Joan. Picnic at Hanging Rock. 1967. Melbourne: Penguin, 1977.Masson, Sophie. “Captive in Fairyland: The Strange Case of Robert Kirk of Aberfoyle.” Nation and Federation in the Celtic World: Papers from the Fourth Australian Conference of Celtic Studies, University of Sydney, June–July 2001. Ed. Pamela O’Neil. Sydney: University of Sydney Celtic Studies Foundation, 2003. Mieder, Wolfgang. “The Pied Piper: Origin, History, and Survival of a Legend.” Tradition and Innovation in Folk Literature. 1987. London: Routledge Revivals, 2015.Pierce, Peter. The Country of Lost Children: An Australian Anxiety. Cambridge: Cambridge UP, 1999.Steele, Kathleen. “Fear and Loathing in the Australian Bush: Gothic Landscapes in Bush Studies and Picnic at Hanging Rock.” Colloquy 20 (2010): 33–56. 27 July 2016 <http://artsonline.monash.edu.au/wp-content/arts/files/colloquy/colloquy_issue_20_december_2010/steele.pdf>.