Articoli di riviste: "Murray-Darling Basin"

1

Crabb, Peter. "Managing the Murray‐Darling Basin". Australian Geographer 19, n. 1 (maggio 1988): 64–88. http://dx.doi.org/10.1080/00049188808702951.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

2

Faulks, Leanne K., Dean M. Gilligan e Luciano B. Beheregaray. "Phylogeography of a threatened freshwater fish (Mogurnda adspersa) in eastern Australia: conservation implications". Marine and Freshwater Research 59, n. 1 (2008): 89. http://dx.doi.org/10.1071/mf07167.

Testo completo

Abstract (sommario):

Phylogeography is a field that has the potential to provide an integrative approach to the conservation of threatened species. The southern purple spotted gudgeon, Mogurnda adspersa, is a small freshwater fish that was once common and widely distributed throughout south-eastern Australia. However, habitat alteration has dramatically reduced the size and the range of Murray–Darling Basin populations, which are now classified as endangered. Here patterns of genetic structure and evolutionary history of M. adspersa in southern Queensland and the Murray–Darling Basin are elucidated using three regions of the mitochondrial DNA, the ATPase 6 and 8 and the control region. Murray–Darling Basin populations are characterised by lineages with highly localised endemism, very low genetic diversity and restricted gene flow. Phylogenetic reconstructions show that Murray–Darling Basin populations comprise a monophyletic clade that possibly originated by range expansion from the coast around 1.6 million years ago. It is proposed that the divergent Murray–Darling Basin clade is of high conservation priority and requires separate management. The present study further exemplifies the role of drainage rearrangement in driving evolutionary diversification in Australian freshwater fishes, an historical process with profound implications for conservation management.

Gli stili APA, Harvard, Vancouver, ISO e altri

3

Goss, K. "Report Card - Murray-Darling Basin - 2001". Water Science and Technology 45, n. 11 (1 giugno 2002): 133–44. http://dx.doi.org/10.2166/wst.2002.0388.

Testo completo

Abstract (sommario):

Ongoing deterioration of the riverine environments of the Murray-Darling Basin led the Murray-Darling Basin Ministerial Council to introduce a Cap in 1995 to halt the growth in diversions of water for consumptive use. This initiative recognised the finite nature of water resources in the Basin and sought to introduce a balance between off-stream use of water and protection of the riverine environment. But the cap is only one step, albeit a fundamental one, in restoring the Basin's rivers - it is a “stake in the ground”. Parties to the Murray-Darling Basin Initiative recognise the need to reverse decades of creeping decline if the Basin's rivers and riverine environments are to return to a more ecologically sustainable condition. In the last 12 months, Council and Commission have taken far-reaching decisions designed to restore the Basin's Rivers. Many of these decisions, even 10 years ago, would have been unimaginable. The Report Card will explain the need for a number of recent decisions that will impact on the future of the Basin's rivers. For example, Council's decision to establish an Environmental Manager function in the Office of the Commission was made in the context of the recently agreed Integrated Catchment Management (ICM) Policy, and supporting Sustainable Rivers Audit. The role of targets and accountabilities under the ICM Policy will also be discussed. The Report Card will also present a snapshot of the state of the Basin's rivers and the actions being taken at a range of scales and locations in response to identified problems. Because some of the key initiatives are still in development, this Report Card will set the scene by describing where our attention is being focused and why.

Gli stili APA, Harvard, Vancouver, ISO e altri

4

Ballard, Clarke. "Management of Murray–Darling Basin, Australia". Irrigation and Drainage 69, n. 4 (28 luglio 2020): 504–16. http://dx.doi.org/10.1002/ird.2510.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

5

Musyl, MK, e CP Keenan. "Population genetics and zoogeography of Australian freshwater golden perch, Macquaria ambigua (Richardson 1845) (Teleostei: Percichthyidae), and electrophoretic identification of a new species from the Lake Eyre basin". Marine and Freshwater Research 43, n. 6 (1992): 1585. http://dx.doi.org/10.1071/mf9921585.

Testo completo

Abstract (sommario):

Populations of golden perch (Macquaria ambigua) were sampled from both sides of the Great Dividing Range (GDR): from the Murray-Darling drainage basin (Murray R., L. Keepit and Condamine R.), the L. Eyre internal drainage basin (Barcoo R. and Diamantina R.), and the internal drainage basin of the Bulloo R.-all to the west of the GDR-and from the Fitzroy drainage basin (Dawson R. and Nogoa R.) east of the GDR. Starch-gel and polyacrylamide electrophoresis of 12 enzyme systems plus two general muscle proteins was used to estimate the genetic variation within and between populations. Of the 18 presumed genetic loci examined, nine were either polymorphic at the P0.99 criterion level or exhibited fixed allelic differences between some of the populations. Within the Murray-Darling drainage basin, there was little indication of heterogeneity. Contingency Χ2 analyses of allelic distributions among drainage basins indicated significant levels of heterogeneity at six variable loci. The isolated L. Eyre population exhibited diagnostic alleles at four loci when compared with the Murray- Darling and Fitzroy populations. The genetic distance of the L. Eyre population (Nei's D=0.23) from these two populations indicates that the L. Eyre golden perch is most probably a previously unrecognized allopatric species. The level of divergence (0 = 0.06) between Fitzroy and Murray-Darling golden perch indicates differentiation at the subspecies level, with no fixed differences observed between these two populations. Finally, golden perch from the Bulloo R. represent either (i) an intermediate evolutionary unit between the presumed ancestral L. Eyre population and the derived Murray-Darling and Fitzroy populations or (ii) a complex hybrid between these populations. Average gene-flow statistics, FST = 0.760 and Nem=0.08, suggest that the populations in each of the four basins can be regarded as separate gene pools that have been isolated for different, and considerable, periods of time.

Gli stili APA, Harvard, Vancouver, ISO e altri

6

Grafton, R. Quentin, e James Horne. "Water markets in the Murray-Darling Basin". Agricultural Water Management 145 (novembre 2014): 61–71. http://dx.doi.org/10.1016/j.agwat.2013.12.001.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

7

Kearney, Robert E., e Melissa A. Kildea. "The Management of Murray Cod in the Murray-Darling Basin". Australasian Journal of Environmental Management 11, n. 1 (gennaio 2004): 42–54. http://dx.doi.org/10.1080/14486563.2004.10648597.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

8

Draper, Clara, e Graham Mills. "The Atmospheric Water Balance over the Semiarid Murray–Darling River Basin". Journal of Hydrometeorology 9, n. 3 (1 giugno 2008): 521–34. http://dx.doi.org/10.1175/2007jhm889.1.

Testo completo

Abstract (sommario):

Abstract The atmospheric water balance over the semiarid Murray–Darling River basin in southeast Australia is analyzed based on a consecutive series of 3- to 24-h NWP forecasts from the Australian Bureau of Meteorology’s Limited Area Prediction System (LAPS). Investigation of the LAPS atmospheric water balance, including comparison of the forecast precipitation to analyzed rain gauge observations, indicates that the LAPS forecasts capture the general qualitative features of the water balance. The key features of the atmospheric water balance over the Murray–Darling Basin are small atmospheric moisture flux divergence (at daily to annual time scales) and extended periods during which the atmospheric water balance terms are largely inactive, with the exception of evaporation, which is consistent and very large in summer. These features present unique challenges for NWP modeling. For example, the small moisture fluxes in the basin can easily be obscured by the systematic errors inherent in all NWP models. For the LAPS model forecasts, there is an unrealistically large evaporation excess over precipitation (associated with a positive bias in evaporation) and unexpected behavior in the moisture flux divergence. Two global reanalysis products (the NCEP Reanalysis I and the 40-yr ECMWF Re-Analysis) also both describe (physically unrealistic) long-term negative surface water budgets over the Murray–Darling Basin, suggesting that the surface water budget cannot be sensibly diagnosed based on output from current NWP models. Despite this shortcoming, numerical models are in general the most appropriate tool for examining the atmospheric water balance over the Murray–Darling Basin, as the atmospheric sounding network in Australia has extremely low coverage.

Gli stili APA, Harvard, Vancouver, ISO e altri

9

Sennett, Amy, Emma Chastain, Sarah Farrell, Tom Gole, Jasdeep Randhawa e Chengyan Zhang. "Challenges and responses in the Murray–Darling Basin". Water Policy 16, S1 (1 marzo 2014): 117–52. http://dx.doi.org/10.2166/wp.2014.006.

Testo completo

Abstract (sommario):

This paper traces the evolving institutional and policy responses to the social, environmental and economic needs of stakeholders in the Murray–Darling Basin. The paper begins by describing four cycles of challenge and response in the basin: the first period (1830–1900) witnessed the state-level development of irrigation and navigation in the basin; the second period (1900–1982) encompassed the construction of the basin's major engineering projects and irrigation infrastructure; the third period (1982–2007) covered the institution of market reforms under a ‘whole Basin’ management approach, in particular, the development of inter-state water trading and the National Water Initiative; and the fourth phase (2007–present), marks the assertion of federal authority over water management with the passing of the Water Act in 2007. The second section of the paper provides background on the basin's natural environment and its infrastructure. This section also describes the increasing centralization of basin management authority by the federal government. The paper's final section presents three key questions for the basin's future: (1) the politically acceptable balance between environmental and economic uses for water in the basin; (2) the appropriate allocation of responsibility between federal and state basin management authorities; and (3) the best way to deliver the desired environmental outcomes.

Gli stili APA, Harvard, Vancouver, ISO e altri

10

Reid, Michael, e Peter Gell. "Regional wetland response typology: Murray-Darling Basin, Australia". PAGES news 19, n. 2 (luglio 2011): 62–64. http://dx.doi.org/10.22498/pages.19.2.62.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

11

Hart, Barry, Glen Walker, Asitha Katupitiya e Jane Doolan. "Salinity Management in the Murray–Darling Basin, Australia". Water 12, n. 6 (26 giugno 2020): 1829. http://dx.doi.org/10.3390/w12061829.

Testo completo

Abstract (sommario):

The southern Murray–Darling Basin (MDB) is particularly vulnerable to salinity problems. Much of the Basin’s landscape and underlying groundwater is naturally saline with groundwater not being suitable for human or irrigation use. Since European settlement in the early 1800s, two actions—the clearance of deep-rooted native vegetation for dryland agriculture and the development of irrigation systems on the Riverine Plains and Mallee region—have resulted in more water now entering the groundwater systems, resulting in mobilization of the salt to the land surface and to rivers. While salinity has been a known issue since the 1960s, it was only in the mid-1980s that was recognized as one of the most significant environmental and economic challenges facing the MDB. Concerted and cooperative action since 1988 by the Commonwealth and Basin state governments under a salinity management approach implemented over the past 30 years has resulted in salinity now being largely under control, but still requiring on-going active management into the future. The approach has involved the development of three consecutive salinity strategies governing actions from 1988 to 2000, from 2001 to 2015, and the most recent from 2016 to 2030. The basis of the approach and all three strategies is an innovative, world-leading salinity management framework consisting of: An agreed salinity target; joint works and measures to reduce salt entering the rivers; and an agreed accountability and governance system consisting of a system of salinity credits to offset debits, a robust and agreed method to quantify the credits and debits, and a salinity register to keep track of credits and debits. This paper first provides background to the salinity issue in the MDB, then reviews the three salinity management strategies, the various actions that have been implemented through these strategies to control salinity, and the role of the recent Basin Plan in salinity management. We then discuss the future of salinity in the MDB given that climate change is forecast to lead to a hotter, drier and more variable climate (particularly more frequent droughts), and that increased salt loads to the River Murray are predicted to come from the lower reaches of the Mallee region. Finally, we identify the key success factors of the program.

Gli stili APA, Harvard, Vancouver, ISO e altri

12

PETERSON, DEBORAH, GAVAN DWYER, DAVID APPELS e JANE FRY. "Water Trade in the Southern Murray-Darling Basin". Economic Record 81, s1 (agosto 2005): S115—S127. http://dx.doi.org/10.1111/j.1475-4932.2005.00248.x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

13

Pigram, John J. "Towards Upstream-Downstream HydrosolidarityAustralia's Murray-Darling River Basin". Water International 25, n. 2 (giugno 2000): 222–26. http://dx.doi.org/10.1080/02508060008686822.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

14

Crabb, Peter. "Australia's Murray-Darling Basin Initiative—Correcting the Record". Water International 26, n. 3 (settembre 2001): 444–47. http://dx.doi.org/10.1080/02508060108686936.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

15

Souter, Nicholas J., Craig R. Williams, John T. Jennings e Robert W. Fitzpatrick. "Submission on the Draft Murray-Darling Basin Plan". Transactions of the Royal Society of South Australia 137, n. 1 (gennaio 2013): 135–37. http://dx.doi.org/10.1080/3721426.2013.10887177.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

16

Larkin, Paul. "Ecosystem response modelling in the Murray–Darling Basin". Australasian Journal of Environmental Management 19, n. 4 (dicembre 2012): 273–75. http://dx.doi.org/10.1080/14486563.2012.705583.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

17

ROGERS, DANIEL J. "Ecosystem Response Modelling in the Murray-Darling Basin". Austral Ecology 36, n. 8 (28 novembre 2011): e44-e44. http://dx.doi.org/10.1111/j.1442-9993.2011.02285.x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

18

GILLESPIE, RICHARD, DAVID FINK, FIONA PETCHEY e GERALDINE JACOBSEN. "Murray-Darling basin freshwater shells: riverine reservoir effect". Archaeology in Oceania 44, n. 2 (luglio 2009): 107–11. http://dx.doi.org/10.1002/j.1834-4453.2009.tb00053.x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

19

Fülöp, R. H., A. T. Codilean, K. M. Wilcken, T. J. Cohen, D. Fink, A. M. Smith, B. Yang et al. "Million-year lag times in a post-orogenic sediment conveyor". Science Advances 6, n. 25 (giugno 2020): eaaz8845. http://dx.doi.org/10.1126/sciadv.aaz8845.

Testo completo

Abstract (sommario):

Understanding how sediment transport and storage will delay, attenuate, and even erase the erosional signal of tectonic and climatic forcings has bearing on our ability to read and interpret the geologic record effectively. Here, we estimate sediment transit times in Australia’s largest river system, the Murray-Darling basin, by measuring downstream changes in cosmogenic 26Al/10Be/14C ratios in modern river sediment. Results show that the sediments have experienced multiple episodes of burial and reexposure, with cumulative lag times exceeding 1 Ma in the downstream reaches of the Murray and Darling rivers. Combined with low sediment supply rates and old sediment blanketing the landscape, we posit that sediment recycling in the Murray-Darling is an important and ongoing process that will substantially delay and alter signals of external environmental forcing transmitted from the sediment’s hinterland.

Gli stili APA, Harvard, Vancouver, ISO e altri

20

Frost, Warwick. "J. M.Powell, ‘MDB’: the Emergence of Bioregionalism in the Murray-Darling Basin (Canberra: Murray-Darling Basin Commission, 1993. Pp. 104. $20.00)". Australian Economic History Review 36, n. 1 (1 gennaio 1996): 115. http://dx.doi.org/10.1111/aehr.361br8.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

21

Hamilton, Serena H., Carmel A. Pollino e Keith F. Walker. "Regionalisation of freshwater fish assemblages in the Murray–Darling Basin, Australia". Marine and Freshwater Research 68, n. 4 (2017): 629. http://dx.doi.org/10.1071/mf15359.

Testo completo

Abstract (sommario):

Regionalisations based on species assemblages are a useful framework for characterising ecological communities and revealing patterns in the environment. In the present study, multivariate analyses are used to discern large-scale patterns in fish assemblages in the Murray–Darling Basin, based on information from the Murray–Darling Basin Authority’s first Sustainable Rivers Audit (SRA), conducted in 2004–2007. The Basin is classified into nine regions with similar historical fish assemblages (i.e. without major human intervention), using data that combine expert opinion, museum collections and historical records. These regions are (1) Darling Basin Plains, (2) Northern Uplands, (3) Murray Basin Plains, (4) Northern Alps, (5) Central East, (6) Avoca Lowland, (7) Southern Slopes, (8) Southern Alps and (9) South-Western Slopes. Associations between assemblages and physical variables (catchment area, elevation, hydrology, precipitation, temperature) are identified and used to reinforce the definitions of regions. Sustainable Rivers Audit data are compared with the historical assemblages, highlighting species whose range and abundance have changed since the early 19th century. Notable changes include declines in native species such as silver perch, river blackfish, mountain galaxias, Macquarie perch, trout cod and freshwater catfish, and the advent of alien species including common carp, eastern gambusia, goldfish, redfin perch, brown trout and rainbow trout. Less significant declines are evident for native carp gudgeons, golden perch, two-spined blackfish, bony herring and flathead gudgeon. Changes are evident even in regions where habitats have been little disturbed in the past 200 years.

Gli stili APA, Harvard, Vancouver, ISO e altri

22

Crabb, Peter. "MANAGING AUSTRALIA’S MAJOR NATURAL RESOURCE: THE MURRAY-DARLING BASIN". Canadian Water Resources Journal 18, n. 1 (gennaio 1993): 67–78. http://dx.doi.org/10.4296/cwrj1801067.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

23

Marohasy, J., e J. Abbot. "Restoring native fish populations in Australia’s murray darling basin". International Journal of Sustainable Development and Planning 10, n. 4 (31 agosto 2015): 487–98. http://dx.doi.org/10.2495/sdp-v10-n4-487-498.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

24

Barrett, Jim, Heleena Bamford e Peter Jackson. "Management of alien fishes in the Murray-Darling Basin". Ecological Management & Restoration 15 (marzo 2014): 51–56. http://dx.doi.org/10.1111/emr.12095.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

25

Biggs, A. J. W. "Rainfall salt accessions in the Queensland Murray - Darling Basin". Soil Research 44, n. 6 (2006): 637. http://dx.doi.org/10.1071/sr06006.

Testo completo

Abstract (sommario):

Two east–west transects were established in southern Queensland to quantify rainfall inputs of chloride and associated ions. Electrical conductivity, pH, and major and minor ions were measured at 9 sites within the Queensland Murray–Darling Basin and 1 site to the east. Variability at some sites was high, possibly a function of the sample collection method. Ionic concentrations decreased with distance inland, a trend similar to that observed elsewhere in Australia, although values closer to the coast were higher than observed in southern and western Australia. Equations to predict both annual average rainfall chloride mass deposition and total salt deposition were derived.

Gli stili APA, Harvard, Vancouver, ISO e altri

26

Connell, Daniel. "Catchment management across borders in the Murray–Darling Basin". International Journal of River Basin Management 11, n. 2 (giugno 2013): 167–73. http://dx.doi.org/10.1080/15715124.2012.727827.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

27

McCaskill, Murray. "The Emergence of Bioregionalism in the Murray-Darling Basin". New Zealand Geographer 51, n. 1 (aprile 1995): 63. http://dx.doi.org/10.1111/j.1745-7939.1995.tb00456.x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

28

Cresswell, R. G., M. Silburn, A. Biggs, D. Rassam e V. McNeil. "Hydrogeochemistry of Hodgson Creek catchment, Queensland Murray-Darling Basin". Geochimica et Cosmochimica Acta 70, n. 18 (agosto 2006): A117. http://dx.doi.org/10.1016/j.gca.2006.06.148.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

29

Lu, Hua, C. J. Moran e Ian P. Prosser. "Modelling sediment delivery ratio over the Murray Darling Basin". Environmental Modelling & Software 21, n. 9 (settembre 2006): 1297–308. http://dx.doi.org/10.1016/j.envsoft.2005.04.021.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

30

Horne, James. "The 2012 Murray-Darling Basin Plan – issues to watch". International Journal of Water Resources Development 30, n. 1 (17 maggio 2013): 152–63. http://dx.doi.org/10.1080/07900627.2013.787833.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

31

Whiterod, Nick R., e Keith F. Walker. "Will rising salinity in the Murray - Darling Basin affect common carp (Cyprinus carpio L.)?" Marine and Freshwater Research 57, n. 8 (2006): 817. http://dx.doi.org/10.1071/mf06021.

Testo completo

Abstract (sommario):

Salinisation in the Murray–Darling Basin, Australia, may affect aquatic flora and fauna, including the common carp, an alien species that has become the most common fish in the river system. This study describes the responses of juvenile carp (31–108 mm total length) to salinity levels that prevail in some wetlands of the lower reaches of the River Murray. Carp are moderately tolerant of salinity (direct transfer LC50: 11 715 mg L–1), particularly after slow acclimation (LC50: 13 070 mg L–1), but sub-lethal effects are evident at lower salinities. These include effects on osmoregulation (>7500 mg L–1), behaviour (7500–12 500 mg L–1) and sperm motility in mature fish (150–300 mm) (8330 mg L–1). Salinities in some Murray–Darling Basin wetlands already approach half seawater (17 500 mg L–1) and carp populations in these important nursery areas could be impacted through sub-lethal effects on adults and lethal effects on juveniles, eggs and sperm.

Gli stili APA, Harvard, Vancouver, ISO e altri

32

Kneebone, Jo, e Belinda Wilson. "Design and Early Implementation of the Murray–Darling Basin Plan". Water Economics and Policy 03, n. 03 (9 gennaio 2017): 1650041. http://dx.doi.org/10.1142/s2382624x16500417.

Testo completo

Abstract (sommario):

Australia’s Murray–Darling Basin extends over one million square kilometers and supports almost three-quarters of the country’s irrigated agricultural land. Like the Colorado River in America and the Yellow River in China, the Murray–Darling Basin runs across a number of jurisdictional boundaries, and has been a focus for national water reforms for many years. The Murray–Darling Basin Plan is the culmination of more than two decades of water reform experience in Australia. It was adopted by the Commonwealth Water Minister in 2012 to rebalance use of water resources and create a more sustainable footing for a healthy working Basin. The Basin Plan was based on the best science at the time, which was endorsed by peer review. The key features of the Basin Plan that are integrated into its design are optimizing social, economic and environmental (triple bottom line) outcomes; improving transparency of decision-making and flexible and adaptive management. As a result of widespread consultation, the Basin Plan also included suggestions from jurisdictions and communities that served to better balance the competing interests for water resources, and provided a clearly defined timetable for implementation to create certainty for communities and investment. The Basin Plan commenced on 29 November 2012, and early implementation activities are well progressed, meaning that water resources are already better positioned to cope with major drought. Looking forward, continued support for Basin Plan reforms from governments and communities will be an ongoing challenge for implementation. Similarly, separating out the effects of the Basin Plan from other external effects on the social and economic well-being of Basin communities will be a challenge when evaluating whether the Basin Plan has achieved its triple bottom line outcomes and objectives.

Gli stili APA, Harvard, Vancouver, ISO e altri

33

Unmack, P. J., M. J. Young, B. Gruber, D. White, A. Kilian, X. Zhang e A. Georges. "Phylogeography and species delimitation of Cherax destructor (Decapoda: Parastacidae) using genome-wide SNPs". Marine and Freshwater Research 70, n. 6 (2019): 857. http://dx.doi.org/10.1071/mf18347.

Testo completo

Abstract (sommario):

Cherax is a genus of 58 species of decapod crustaceans that are widespread across Australia and New Guinea. We use single-nucleotide polymorphisms (SNPs) to examine phylogeographic patterns in the most widespread species of Cherax, namely, C. destructor, and test the distinctiveness of one undescribed species, two C. destructor subspecies, previously proposed evolutionarily significant units, and management units. Both the phylogenetic analyses and the analysis of fixed allelic differences between populations support the current species-level taxonomy of C. setosus, C. depressus, C. dispar and C. destructor, the distinctiveness of C. destructor albidus and C. d. destructor and the existence of one undescribed species. The two populations of C. d. albidus from the Glenelg and Wimmera rivers were significantly distinct, with eight diagnostic differences (<1% fixed differences, null expectation is four fixed differences), but this low level of divergence is interpreted as within the range that might be expected of management units, that is, among allopatric populations of a single species or subspecies. A southern clade of C. d. destructor comprising the Murray River and its tributaries upstream from its confluence with the Darling River is genetically distinct from a northern clade comprising populations from the Lake Eyre Basin, the northern half of the Murray–Darling Basin (Darling River catchment) and the Lower Murray River below the Darling confluence.

Gli stili APA, Harvard, Vancouver, ISO e altri

34

Vervoort, R. W., M. Silburn e M. Kirby. "Near surface water balance in the Northern Murray-Darling Basin". Water Science and Technology 48, n. 7 (1 ottobre 2003): 207–14. http://dx.doi.org/10.2166/wst.2003.0442.

Testo completo

Abstract (sommario):

The water balance allows the calculation of deep drainage from other components of the hydrological cycle. Deep drainage has been linked to outbreaks of dryland and irrigated salinity. Until recently, deep drainage was not considered to be an issue on the alluvial plains of the Northern Murray-Darling Basin. Recent simulation studies and calculations using the water balance suggest that substantial deep drainage occurs under irrigated agriculture. However, these estimates have large uncertainties due to possible errors in measurement, calculation and due to spatial variability. On a catchment scale the relative area under a certain land use as well as the connection to local groundwater and the influence of anomalies such as prior streams needs to be considered. This paper discusses the current state of knowledge on the water balance in the Northern Murray-Darling Basin and highlights the need for a concentrated effort to measure all the components of the water balance in this area, as well as the effect on shallow groundwater quality and levels.

Gli stili APA, Harvard, Vancouver, ISO e altri

35

Fettling, Neil. "Water+shed: A 20-year survey of artwork on the Murray Darling Basin, Australia". Thesis Eleven 150, n. 1 (9 gennaio 2019): 131–59. http://dx.doi.org/10.1177/0725513618823778.

Testo completo

Abstract (sommario):

The Murray Darling Basin is the primary watershed of the Australian continent. It is central to the national imaginary as both major food bowl and natural resource. Two hundred years of unsustainable pastoral and farming practices are threatening its ecological future and with it the nation-state’s industrial agricultural economic base. I am a visual artist who works in multiple media. For most of my career I have been living and working in this region. A major component of my intellectual and artistic expression has been expended in a critical and aesthetic response to this watershed. The artworks documented in this essay were part of a 20-year (1989–2009) survey exhibition of my mediations and responses to the crisis of water allocation in the Murray Darling Basin.

Gli stili APA, Harvard, Vancouver, ISO e altri

36

Davies, Peter, e Susan Lawrence. "Engineered landscapes of the southern Murray–Darling Basin: Anthropocene archaeology in Australia". Anthropocene Review 6, n. 3 (8 settembre 2019): 179–206. http://dx.doi.org/10.1177/2053019619872826.

Testo completo

Abstract (sommario):

Human activities over the past 200 years have fundamentally transformed the shape of Australia’s southern Murray–Darling Basin. The arrival of British colonists in the 19th century disrupted millennia of human management of the region and brought widespread changes to biota and soils. The subsequent development of mining, transport and irrigation infrastructure re-engineered the region’s landscapes to meet human objectives and ambitions. This article offers an integrated regional history of anthropogenic change across the southern Murray–Darling Basin, identifying historical processes driving complex ongoing interactions between human activities and the natural environment. We examine three broad domains of engineering and geo-disturbance in the region, including the development of transport corridors, micro- and macro-scale water management and landforms remade by erosion and sedimentation. We use the archaeology of the recent past to integrate insights drawn from physical geography, fluvial geomorphology and related research into the enduring landscape changes of modern Australia’s food bowl.

Gli stili APA, Harvard, Vancouver, ISO e altri

37

Davie, Alec W., e Joe B. Pera. "The Fish Health Risk Indicator: linking water quality and river flow data with fish health to improve our predictive capacity around fish death events". Marine and Freshwater Research 73, n. 2 (2022): 193. http://dx.doi.org/10.1071/mf20360.

Testo completo

Abstract (sommario):

Severe drought conditions contributed to three mass fish mortality events in the Darling River near Menindee, part of the Murray–Darling Basin, Australia, during the summer of 2018–19. An independent assessment recommended the need for improved modelling approaches to identify when sections of rivers may be more susceptible to fish kill events. We present a geographic information system (GIS)-based tool that combines meteorological forecasts with river flow and algal biomass datasets to identify river reaches where additional stresses on fish health may produce an increased risk of mass fish deaths. At present the tool is still in development and will require the addition of extra datasets and testing using historical datasets to further validate its accuracy. Despite the tool being in its development stage, the decision support tool has been widely accepted and provides natural resource managers with a rapid way to understand and communicate risks to fish health, supporting improved water management options across the Murray–Darling Basin that may ultimately help reduce the frequency and severity of large-scale fish mortality events.

Gli stili APA, Harvard, Vancouver, ISO e altri

38

Gell, Peter A. "Watching the tide roll away – contested interpretations of the nature of the Lower Lakes of the Murray Darling Basin". Pacific Conservation Biology 26, n. 2 (2020): 130. http://dx.doi.org/10.1071/pc18085.

Testo completo

Abstract (sommario):

The Murray Darling Basin Plan (Murray Darling Basin Authority 2012) represents the largest investment by government in an Australian environmental management challenge and remains highly conflicted owing to the contested allocation of diminishing water resources. Central to the decision to reallocate consumptive water to environmental purposes in this Plan was the case made to maintain the freshwater character of two lakes at the terminus of the Murray Darling Basin, in South Australia. This freshwater state was identified as the natural condition on the basis of selected anecdotal evidence and was enshrined in the site’s listing under the Ramsar Convention. The commitment to the freshwater state was challenged under drought when sea water was seen as a means of averting acidification when low river flows risked the exposure of sulfidic sediments. Independent evidence from water quality indicators (diatoms) preserved in lake sediment records, however, attested to an estuarine, albeit variable, condition before the commissioning of near-mouth barrages in 1940. This interpretation for a naturally estuarine history, published after peer review, was overlooked in a report to the South Australian government, which argued, without the provision of new evidence from the lakes, that they were fresh for their entire history. This revised interpretation is widely cited in the scientific literature, government reports and online discussion and underpins a watering strategy aimed at a freshwater future for the Lower Lakes. The allocation of large volumes of fresh water to achieve this condition presents significant difficulties owing to the highly contested nature of water use across the Basin.

Gli stili APA, Harvard, Vancouver, ISO e altri

39

Gell, Peter A. "Corrigendum to: Watching the tide roll away – contested interpretations of the nature of the Lower Lakes of the Murray Darling Basin". Pacific Conservation Biology 26, n. 2 (2020): 211. http://dx.doi.org/10.1071/pc18085_co.

Testo completo

Abstract (sommario):

The Murray Darling Basin Plan (Murray Darling Basin Authority 2012) represents the largest investment by government in an Australian environmental management challenge and remains highly conflicted owing to the contested allocation of diminishing water resources. Central to the decision to reallocate consumptive water to environmental purposes in this Plan was the case made to maintain the freshwater character of two lakes at the terminus of the Murray Darling Basin, in South Australia. This freshwater state was identified as the natural condition on the basis of selected anecdotal evidence and was enshrined in the site's listing under the Ramsar Convention. The commitment to the freshwater state was challenged under drought when sea water was seen as a means of averting acidification when low river flows risked the exposure of sulfidic sediments. Independent evidence from water quality indicators (diatoms) preserved in lake sediment records, however, attested to an estuarine, albeit variable, condition before the commissioning of near-mouth barrages in 1940. This interpretation for a naturally estuarine history, published after peer review, was overlooked in a report to the South Australian government, which argued, without the provision of new evidence from the lakes, that they were fresh for their entire history. This revised interpretation is widely cited in the scientific literature, government reports and online discussion and underpins a watering strategy aimed at a freshwater future for the Lower Lakes. The allocation of large volumes of fresh water to achieve this condition presents significant difficulties owing to the highly contested nature of water use across the Basin.

Gli stili APA, Harvard, Vancouver, ISO e altri

40

Yang, Ang, Geoff Podger, Shane Seaton e Robert Power. "A river system modelling platform for Murray-Darling Basin, Australia". Journal of Hydroinformatics 15, n. 4 (29 marzo 2012): 1109–20. http://dx.doi.org/10.2166/hydro.2012.153.

Testo completo

Abstract (sommario):

Global climate change and local development make water supply one of the most vulnerable sectors in Australia. The Australian government has therefore commissioned a series of projects to evaluate water availability and the sustainable use of water resources in Australia. This paper discusses a river system modelling platform that has been used in some of these nationally significant projects. The platform consists of three components: provenance, modelling engine and reporting database. The core component is the modelling engine, an agent-based hydrological simulation system called the Integrated River System Modelling Framework (IRSMF). All configuration information and inputs to IRSMF are recorded in the provenance component so that modelling processes can be reproduced and results audited. The reporting database is used to store key statistics and raw output time series data for selected key parameters. This river system modelling platform has for the first time modelled a river system at the basin level in Australia. It provides practitioners with a unique understanding of the characteristics and emergent behaviours of river systems at the basin level. Although the platform is purpose-built for the Murray-Darling Basin, it would be easy to apply it to other basins by using different river models to model agent behaviours.

Gli stili APA, Harvard, Vancouver, ISO e altri

41

Parton, Kevin. "Economic, Social and Environmental Sustainability of the Murray-Darling Basin". International Journal of Environmental, Cultural, Economic, and Social Sustainability: Annual Review 8, n. 1 (2013): 29–43. http://dx.doi.org/10.18848/1832-2077/cgp/v08/55141.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

42

Grafton, R. Quentin, e Sarah Ann Wheeler. "Economics of Water Recovery in the Murray-Darling Basin, Australia". Annual Review of Resource Economics 10, n. 1 (5 ottobre 2018): 487–510. http://dx.doi.org/10.1146/annurev-resource-100517-023039.

Testo completo

Abstract (sommario):

We review recent water reforms and the consequences of water recovery intended to increase stream flows in the Murray-Darling Basin (MDB), Australia. The MDB provides a natural experiment of water recovery for the environment that includes ( a) the voluntary buy-back of water rights from willing sellers and ( b) the subsidization of irrigation infrastructure. We find that ( a) the actual increase in the volumes of water in terms of stream flows is much less than claimed by the Australian government; ( b) subsidies to increase irrigation efficiency have reduced stream and groundwater return flows; ( c) buy-backs are much more cost effective than subsidies; ( d) many of the gains from water recovery have accrued as private benefits to irrigators; and ( e) more than a decade after water recovery began, there is no observable basin-wide relationship between volumes of water recovered and flows at the mouth of the River Murray.

Gli stili APA, Harvard, Vancouver, ISO e altri

43

Alston, Margaret, Kerri Whittenbury, Deb Western e Aaron Gosling. "Water policy, trust and governance in the Murray-Darling Basin". Australian Geographer 47, n. 1 (13 dicembre 2015): 49–64. http://dx.doi.org/10.1080/00049182.2015.1091056.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

44

Gaynor, Andrea. "Flood Country: An Environmental History of the Murray-Darling Basin". Australian Historical Studies 46, n. 1 (2 gennaio 2015): 142–43. http://dx.doi.org/10.1080/1031461x.2015.992836.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

45

Wittwer, Glyn, e Marnie Griffith. "Modelling drought and recovery in the southern Murray-Darling basin*". Australian Journal of Agricultural and Resource Economics 55, n. 3 (13 giugno 2011): 342–59. http://dx.doi.org/10.1111/j.1467-8489.2011.00541.x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

46

Connell, Daniel. "Contrasting Approaches to Water Management in the Murray-Darling Basin". Australasian Journal of Environmental Management 14, n. 1 (marzo 2007): 6–13. http://dx.doi.org/10.1080/14486563.2007.9725144.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

47

Hesse, Paul P., Rory Williams, Timothy J. Ralph, Kirstie A. Fryirs, Zacchary T. Larkin, Kira E. Westaway e Will Farebrother. "Palaeohydrology of lowland rivers in the Murray-Darling Basin, Australia". Quaternary Science Reviews 200 (novembre 2018): 85–105. http://dx.doi.org/10.1016/j.quascirev.2018.09.035.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

48

Hall, Nigel. "Linear and quadratic models of the southern Murray-Darling basin". Environment International 27, n. 2-3 (settembre 2001): 219–23. http://dx.doi.org/10.1016/s0160-4120(01)00090-3.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

49

Loch, Adam, e David Adamson. "Drought and the rebound effect: a Murray–Darling Basin example". Natural Hazards 79, n. 3 (1 aprile 2015): 1429–49. http://dx.doi.org/10.1007/s11069-015-1705-y.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

50

Connell, Daniel. "Irrigation, Water Markets and Sustainability in Australia's Murray-darling Basin". Agriculture and Agricultural Science Procedia 4 (2015): 133–39. http://dx.doi.org/10.1016/j.aaspro.2015.03.016.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Articoli di riviste sul tema "Murray-Darling Basin"

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili