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Articoli di riviste sul tema "Murray-Darling River"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 21 febbraio 2023

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1

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, no. 25 (June 2020): eaaz8845. http://dx.doi.org/10.1126/sciadv.aaz8845.

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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 D

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2

Maini, N., A. Buchan, and S. Joseph. "Derivation of a salinity target for the Lower Murray Darling Valley." Water Science and Technology 48, no. 7 (October 1, 2003): 105–12. http://dx.doi.org/10.2166/wst.2003.0430.

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The NSW Government commissioned catchment management boards (CMBs) to set the direction and process for catchment scale natural resource management. In the Lower Murray Darling, Rivers are highly regulated and water resources shared between three states. The Catchment Board only has jurisdiction over the northern bank of the Murray but salt and water enter the river from many locations upstream and along the area boundary. River salt and flow modelling has continually been improved to reflect and contribute to an increased understanding of salinity processes. The MDBC Salt Load study correlate

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3

Unmack, P. J., M. J. Young, B. Gruber, D. White, A. Kilian, X. Zhang, and A. Georges. "Phylogeography and species delimitation of Cherax destructor (Decapoda: Parastacidae) using genome-wide SNPs." Marine and Freshwater Research 70, no. 6 (2019): 857. http://dx.doi.org/10.1071/mf18347.

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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

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4

Davie, Alec W., and 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, no. 2 (2022): 193. http://dx.doi.org/10.1071/mf20360.

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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 d

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5

Pittock, Jamie, and C. Max Finlayson. "Australia's Murray - Darling Basin: freshwater ecosystem conservation options in an era of climate change." Marine and Freshwater Research 62, no. 3 (2011): 232. http://dx.doi.org/10.1071/mf09319.

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River flows in the Murray–Darling Basin, as in many regions in the world, are vulnerable to climate change, anticipated to exacerbate current, substantial losses of freshwater biodiversity. Additional declines in water quantity and quality will have an adverse impact on existing freshwater ecosystems. We critique current river-management programs, including the proposed 2011 Basin Plan for Australia’s Murray–Darling Basin, focusing primarily on implementing environmental flows. River management programs generally ignore other important conservation and adaptation measures, such as strategicall

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6

Sheldon, Fran, and Keith F. Walker. "Spatial distribution of littoral invertebrates in the lower Murray - Darling River system, Australia." Marine and Freshwater Research 49, no. 2 (1998): 171. http://dx.doi.org/10.1071/mf96062.

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The abundance and richness of macroinvertebrates in the lower Murray and Darling rivers were examined at a macroscale (rivers), mesoscale (billabongs, backwaters, channel) and microscale (vegetation, snags, substrata). In the Darling, insects dominated (85% of taxa, 81% of individuals); the richest taxa were Diptera (26 taxa) and Coleoptera (15 taxa) and the most abundant were Hemiptera (47%) and Diptera (35%). In the Murray, insects again dominated (84% of taxa, 52% of individuals), particularly Diptera (22 taxa), Coleoptera (12 taxa) and Hemiptera (9 taxa), but there were more crustaceans (9

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7

Draper, Clara, and Graham Mills. "The Atmospheric Water Balance over the Semiarid Murray–Darling River Basin." Journal of Hydrometeorology 9, no. 3 (June 1, 2008): 521–34. http://dx.doi.org/10.1175/2007jhm889.1.

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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

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8

Pigram, John J. "Towards Upstream-Downstream HydrosolidarityAustralia's Murray-Darling River Basin." Water International 25, no. 2 (June 2000): 222–26. http://dx.doi.org/10.1080/02508060008686822.

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9

Quiggin, John. "Environmental economics and the Murray–Darling river system." Australian Journal of Agricultural and Resource Economics 45, no. 1 (March 2001): 67–94. http://dx.doi.org/10.1111/1467-8489.00134.

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10

Gehrke, Peter C., and John H. Harris. "Large-scale patterns in species richness and composition of temperate riverine fish communities, south-eastern Australia." Marine and Freshwater Research 51, no. 2 (2000): 165. http://dx.doi.org/10.1071/mf99061.

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Riverine fish in New South Wales were studied to examine longitudinal trends in species richness and to identify fish communities on a large spatial scale. Five replicate rivers of four types (montane, slopes, regulated lowland and unregulated lowland) were selected from North Coast, South Coast, Murray and Darling regions. Fishwere sampled during summer and winter in two consecutive years with standardized gear that maximized the range of species caught. The composition of fish communities varied among regions and river types, with little temporal variation. Distinct regional communities conv

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11

Gippel, C., T. Jacobs, and T. McLeod. "Environmental flows and water quality objectives for the River Murray." Water Science and Technology 45, no. 11 (June 1, 2002): 251–60. http://dx.doi.org/10.2166/wst.2002.0402.

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Over the past decade, there intense consideration of managing flows in the River Murray to provide environmental benefits. In 1990 the Murray-Darling Basin Ministerial Council adopted a water quality policy: To maintain and, where necessary, improve existing water quality in the rivers of the Murray-Darling Basin for all beneficial uses - agricultural, environmental, urban, industrial and recreational, and in 1994 a flow policy: To maintain and where necessary improve existing flow regimes in the waterways of the Murray-Darling Basin to protect and enhance the riverine environment. The Audit o

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12

Whiterod, Nick R., and Keith F. Walker. "Will rising salinity in the Murray - Darling Basin affect common carp (Cyprinus carpio L.)?" Marine and Freshwater Research 57, no. 8 (2006): 817. http://dx.doi.org/10.1071/mf06021.

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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 (>7

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13

Crook, David A., Damien J. O'Mahony, Bronwyn M. Gillanders, Andrew R. Munro, Andrew C. Sanger, Stephen Thurstan, and Lee J. Baumgartner. "Contribution of stocked fish to riverine populations of golden perch (Macquaria ambigua) in the Murray–Darling Basin, Australia." Marine and Freshwater Research 67, no. 10 (2016): 1401. http://dx.doi.org/10.1071/mf15037.

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Stocking of native fishes is conducted to augment riverine fisheries in many parts of the world, yet most stocking activities are conducted without empirical information on their effectiveness or impacts. In the Murray–Darling Basin (MDB), Australia, stocking has been underway for several decades to maintain recreational fisheries. We stocked chemically tagged golden perch (Macquaria ambigua) fingerlings in three rivers to determine the proportions of stocked fish within populations of the species. Stocked sites were monitored for up to 5 years in the Murrumbidgee River, Edward River and Billa

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14

Koehn, John D., and D. J. Harrington. "Collection and distribution of the early life stages of the Murray cod (Maccullochella peelii peelii) in a regulated river." Australian Journal of Zoology 53, no. 3 (2005): 137. http://dx.doi.org/10.1071/zo04086.

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The Murray cod (Maccullochella peelii peelii) is a large fish species keenly sought by anglers. However, this species has declined in distribution and abundance and is now listed nationally as vulnerable. This study was undertaken in the Ovens and Murray rivers, to collect larvae and age-0 Murray cod and determine the distribution of larval Murray cod around the mid-Murray River irrigation storage of Lake Mulwala. Murray cod larvae were collected from 17 of 18 sites: main channels and flowing anabranch channels of regulated and unregulated rivers, sites upstream and downstream of the lake, in

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15

Yang, Ang, Geoff Podger, Shane Seaton, and Robert Power. "A river system modelling platform for Murray-Darling Basin, Australia." Journal of Hydroinformatics 15, no. 4 (March 29, 2012): 1109–20. http://dx.doi.org/10.2166/hydro.2012.153.

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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 Integr

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16

Hamilton, Serena H., Carmel A. Pollino, and Keith F. Walker. "Regionalisation of freshwater fish assemblages in the Murray–Darling Basin, Australia." Marine and Freshwater Research 68, no. 4 (2017): 629. http://dx.doi.org/10.1071/mf15359.

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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

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17

Davies, P. E., J. H. Harris, T. J. Hillman, and K. F. Walker. "The Sustainable Rivers Audit: assessing river ecosystem health in the Murray - Darling Basin, Australia." Marine and Freshwater Research 61, no. 7 (2010): 764. http://dx.doi.org/10.1071/mf09043.

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The Sustainable Rivers Audit (SRA) is a systematic assessment of the health of river ecosystems in the Murray–Darling Basin (MDB), Australia. It has similarities to the United States’ Environmental Monitoring and Assessment Program, the European Water Framework Directive and the South African River Health Program, but is designed expressly to represent functional and structural links between ecosystem components, biophysical condition and human interventions in the MDB. Environmental metrics derived from field samples and/or modelling are combined as indicators of condition in five themes (Hyd

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18

Goss, Kevin F. "Environmental flows, river salinity and biodiversity conservation: managing trade-offs in the Murray - Darling basin." Australian Journal of Botany 51, no. 6 (2003): 619. http://dx.doi.org/10.1071/bt03003.

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The Murray–Darling basin's river system suffers from over-allocation of water resources to consumptive use and salinity threats to water quality. This paper draws attention to the current state of knowledge and the need for further investigations into the biological effect of river salinity on aquatic biota and ecosystems, the threats of dryland salinity to terrestrial biodiversity, and managing environmental flows and salinity control to limit the trade-offs in water-resource security and river salinity.There is growing evidence that river salt concentrations lower than the normally adopted t

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19

Tibby, John, and Michael A. Reid. "A model for inferring past conductivity in low salinity waters derived from Murray River (Australia) diatom plankton." Marine and Freshwater Research 55, no. 6 (2004): 597. http://dx.doi.org/10.1071/mf04032.

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Detecting human-induced salinisation in rivers and wetlands of the Murray-Darling Basin has proved problematic. A diatom-based model that permits the estimation of past electrical conductivity (EC) from sedimentary diatom sequences has been developed from Murray River planktonic diatoms. Canonical Correspondence Analysis indicates that EC explains the greatest amount of variance in Murray River planktonic diatoms and that its influence is partially independent of that associated with velocity, turbidity, pH and nutrients. A weighted-averaging based model for inferring past EC was therefore der

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20

Gehrke, P. C., P. Brown, C. B. Schiller, D. B. Moffatt, and A. M. Bruce. "River regulation and fish communities in the Murray-Darling river system, Australia." Regulated Rivers: Research & Management 11, no. 3-4 (November 1995): 363–75. http://dx.doi.org/10.1002/rrr.3450110310.

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21

Hart, Barry, Glen Walker, Asitha Katupitiya, and Jane Doolan. "Salinity Management in the Murray–Darling Basin, Australia." Water 12, no. 6 (June 26, 2020): 1829. http://dx.doi.org/10.3390/w12061829.

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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

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22

Stewart, G., and B. Harper. "Barmah-Millewa forest environmental water allocation." Water Science and Technology 45, no. 11 (June 1, 2002): 217–23. http://dx.doi.org/10.2166/wst.2002.0398.

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The formal allocation of water for the environment is a developing area of river management both scientifically and in terms of community participation. This case study, illustrating the recent use of the Barmah-Millewa Forest Environmental Water Allocation (EWA), provides a practical demonstration of community participation in environmental water management, the application of hydrological and biological “triggers” and a positive, demonstrable biological outcome from an environmental water allocation. The Barmah-Millewa Forest covers an area of 70,000 ha across the floodplain of the Murray Ri

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23

Garrick, Dustin, Rosalind Bark, Jeff Connor, and Onil Banerjee. "Environmental water governance in federal rivers: opportunities and limits for subsidiarity in Australia's Murray–Darling River." Water Policy 14, no. 6 (August 14, 2012): 915–36. http://dx.doi.org/10.2166/wp.2012.120.

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A reform process is underway in the Murray–Darling Basin (Australia) to reallocate water from irrigated agriculture to the environment. The scale, complexity and politics of the recovery process have prompted interest in the role of local environmental water managers within state and federal governance arrangements. This paper examines prospects for a local role in environmental water management through the lens of the subsidiarity principle: the notion that effective governance devolves tasks to the lowest level with the political authority and capacity to perform them. The article defines an

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24

T. Kingsford, Richard. "Managing Australia's Scarce Water Resources for the Environment." Pacific Conservation Biology 15, no. 1 (2009): 4. http://dx.doi.org/10.1071/pc090004.

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Australia has 12 major drainage basins, but most water use and extraction comes from the Murray- Darling Basin, despite not having Australia?s more populous cities. About 66% of surface water use in Australia is extracted from the rivers of the Murray-Darling Basin (NLWRA 2001). The ecological impacts are widespread and insurmountable: key ecosystems are in various stages of collapse. Many of these are conservation reserves and wetlands recognized for their international importance under the Ramsar Convention. Populations of native fish species are considered to be only at 10% of pre European

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Garrick, Dustin, Lucia De Stefano, Fai Fung, Jamie Pittock, Edella Schlager, Mark New, and Daniel Connell. "Managing hydroclimatic risks in federal rivers: a diagnostic assessment." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 371, no. 2002 (November 13, 2013): 20120415. http://dx.doi.org/10.1098/rsta.2012.0415.

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Hydroclimatic risks and adaptive capacity are not distributed evenly in large river basins of federal countries, where authority is divided across national and territorial governments. Transboundary river basins are a major test of federal systems of governance because key management roles exist at all levels. This paper examines the evolution and design of interstate water allocation institutions in semi-arid federal rivers prone to drought extremes, climatic variability and intensified competition for scarce water. We conceptualize, categorize and compare federal rivers as social–ecological

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Tibby, John, Deborah Haynes, and Kerri Muller. "The predominantly fresh history of Lake Alexandrina, South Australia, and its implications for the Murray–Darling Basin Plan: a comment on Gell (2020)." Pacific Conservation Biology 26, no. 2 (2020): 142. http://dx.doi.org/10.1071/pc19039.

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The pre-European settlement state of Lake Alexandrina, a lake system at the mouth of the River Murray has been the subject of some debate. Fluin et al. (2007) concluded on the basis of diatom evidence from sediment cores that ‘Marine water indicators were never dominant in Lake Alexandrina’. In a report to the South Australian Government, Fluin et al. (2009) stated, consistent with the earlier research, that ‘There is no evidence in the 7000 year record of substantial marine incursions into Lake Alexandrina’. Gell (2020) has argued both that Fluin et al. (2009) is in error and claims that it,

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27

Stuart, Ivor G., and Matthew Jones. "Large, regulated forest floodplain is an ideal recruitment zone for non-native common carp (Cyprinus carpio L.)." Marine and Freshwater Research 57, no. 3 (2006): 333. http://dx.doi.org/10.1071/mf05035.

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Non-native common carp (Cyprinus carpio L.) are the most abundant large-bodied fish in the Murray–Darling Basin. The abundance of common carp larvae and young-of-the-year appears to increase after flooding, although the relative contribution of floodplain habitats compared to riverine areas remains unresolved. Larval nets were used monthly from September 2000 to January 2001 to identify common carp spawning and recruitment areas in the regulated Murray River and floodplain around the Barmah–Millewa forest. Five non-native and five native fish species comprising 136 111 individuals were collect

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Leigh, Sandra J., and Brenton P. Zampatti. "Movement and mortality of Murray cod, Maccullochella peelii, during overbank flows in the lower River Murray, Australia." Australian Journal of Zoology 61, no. 2 (2013): 160. http://dx.doi.org/10.1071/zo12124.

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Conservation of Murray cod (Maccullochella peelii), a large endangered fish species of Australia’s Murray–Darling Basin, relies on a detailed understanding of life history, including movement patterns and habitat use. We used radio-tracking to investigate the movement of 36 Murray cod in main channel and anabranch habitats of the lower River Murray during a flood and associated hypoxic blackwater event. During a flood peak of ~93 000 ML day–1, dissolved oxygen decreased to 1.2 mg L–1. Four movement types were observed: (1) localised small-scale movement, (2) broad-scale movement within anabran

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Cunningham, Shaun C., Jennifer Read, Patrick J. Baker, and Ralph Mac Nally. "Quantitative assessment of stand condition and its relationship to physiological stress in stands of Eucalyptus camaldulensis (Myrtaceae)." Australian Journal of Botany 55, no. 7 (2007): 692. http://dx.doi.org/10.1071/bt07031.

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River regulation has led to a decline in the condition of Australia’s dominant riverine tree species, Eucalyptus camaldulensis Dehnh., in the Murray–Darling Basin. A quantitative method of assessing the condition of these important riparian forests is required for effective monitoring and management. A range of stand structural, morphological and physiological variables was measured in stands of contrasting condition along the Murray River in south-eastern Australia. Percentage live basal area, plant area index and crown vigour were found to be reliable, objective indicators of stand condition

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Gatehouse, Robyn D., I. S. Williams, and B. J. Pillans. "Fingerprinting windblown dust in south-eastern Australian soils by uranium-lead dating of detrital zircon." Soil Research 39, no. 1 (2001): 7. http://dx.doi.org/10.1071/sr99078.

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The U-Pb ages of fine-grained zircon separated from 2 dust-dominated soils in the eastern highlands of south-eastern Australia and measured by ion microprobe (SHRIMP) revealed a characteristic age ‘fingerprint’ from which the source of the dust has been determined and by which it will be possible to assess the contribution of dust to other soil profiles. The 2 soils are dominated by zircon 400–600 and 1000–1200 Ma old, derived from Palaeozoic granites and sediments of the Lachlan Fold Belt, but also contain significant components 100–300 Ma old, characteristic of igneous rocks in the New Engla

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Kneebone, Jo, and Belinda Wilson. "Design and Early Implementation of the Murray–Darling Basin Plan." Water Economics and Policy 03, no. 03 (January 9, 2017): 1650041. http://dx.doi.org/10.1142/s2382624x16500417.

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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 sustainabl

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Couch, Alan J., Peter J. Unmack, Fiona J. Dyer, and Mark Lintermans. "Who’s your mama? Riverine hybridisation of threatened freshwater Trout Cod and Murray Cod." PeerJ 4 (October 27, 2016): e2593. http://dx.doi.org/10.7717/peerj.2593.

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Rates of hybridization and introgression are increasing dramatically worldwide because of translocations, restocking of organisms and habitat modifications; thus, determining whether hybridization is occuring after reintroducing extirpated congeneric species is commensurately important for conservation. Restocking programs are sometimes criticized because of the genetic consequences of hatchery-bred fish breeding with wild populations. These concerns are important to conservation restocking programs, including those from the Australian freshwater fish family, Percichthyidae. Two of the better

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Parsons, Melissa, Martin C. Thoms, and Joseph E. Flotemersch. "Eight river principles for navigating the science–policy interface." Marine and Freshwater Research 68, no. 3 (2017): 401. http://dx.doi.org/10.1071/mf15336.

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Scientists and policymakers often work together to develop policy about the sustainable use of river ecosystems. River science plays an important role in developing river policy but how can key aspects of river science be conveyed as a heuristic to navigate the interface between river science and river policy? This paper introduces eight principles that encapsulate the key properties of rivers to consider during the development of river policy: (1) rivers are social–ecological systems; (2) river ecosystems provide valuable ecosystem services; (3) tools should support policy development; (4) kn

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Allan, Catherine, and Robyn J. Watts. "Framing Two Environmental Flow Trials in the Murray-Darling Basin, South-Eastern Australia." Water 14, no. 3 (January 29, 2022): 411. http://dx.doi.org/10.3390/w14030411.

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We make sense of the world around us through mental knowledge structures called ‘frames’. Frames, and the metaphors that help to form and maintain them, can be studied through examining discourse. In this paper, we aim to understand the framing of two trials with environmental water by analysing interview-derived discourse. Two separate flow trials, involving changes to river operating rules and practices, were undertaken in the Edward/Kolety-Wakool river system in Australia’s Murray-Darling Basin in 2017 and 2018, as part of the adaptive delivery of water for the environment. Semi-structured

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Papas, Maureen. "Supporting Sustainable Water Management: Insights from Australia’s Reform Journey and Future Directions for the Murray–Darling Basin." Water 10, no. 11 (November 14, 2018): 1649. http://dx.doi.org/10.3390/w10111649.

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Effective regulation of freshwater remains one of the biggest challenges facing our societies. In times of record-breaking weather extremes spurred by a changing climate, decision makers are increasingly aware of the need to formulate more effective governance to ensure the reliability, accessibility, and quality of this life-giving resource. In recent years, the Australian government has played a key role in water management. The government has managed a significant amount of water entitlements in the Murray–Darling Basin (MDB), through its Commonwealth Environmental Water Holder (CEWH) agenc

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Wheeler, Kevin G., Catherine J. Robinson, and Rosalind H. Bark. "Modelling to bridge many boundaries: the Colorado and Murray-Darling River basins." Regional Environmental Change 18, no. 6 (March 5, 2018): 1607–19. http://dx.doi.org/10.1007/s10113-018-1304-z.

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Watkins, Susanne C., G. P. Quinn, and Ben Gawne. "Changes in organic-matter dynamics and physicochemistry, associated with riparian vegetation loss and river regulation in floodplain wetlands of the Murray River, Australia." Marine and Freshwater Research 61, no. 10 (2010): 1207. http://dx.doi.org/10.1071/mf09312.

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Abstract (sommario):

Extensive clearing of floodplain forests potentially reduces organic matter available to floodplain wetlands. Furthermore, on rivers regulated to provide irrigation water in summer, floodplain wetlands that were previously inundated in spring, now flood in summer/autumn. In the Murray–Darling Basin, Australia, this has changed the timing of organic matter entering the aquatic phase, since leaf fall peaks in summer. Field surveys and mesocosm experiments on floodplain wetlands on the River Murray revealed faster processing rates of leaves in summer/autumn than spring, and no difference between

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38

Shi, Zhuolin, Yun Chen, Qihang Liu, and Chang Huang. "Discharge Estimation Using Harmonized Landsat and Sentinel-2 Product: Case Studies in the Murray Darling Basin." Remote Sensing 12, no. 17 (August 30, 2020): 2810. http://dx.doi.org/10.3390/rs12172810.

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Abstract (sommario):

Quantifying river discharge is a critical component for hydrological studies, floodplain ecological conservation research, and water resources management. In recent years, a series of remote sensing-based discharge estimation methods have been developed. An example is the use of the near infrared (NIR) band of optical satellite images, with the principle of calculating the ratio between a stable land pixel for calibration (C) and a pixel within the river for measurement (M), applying a linear regression between C/M series and observed discharge series. This study trialed the C/M method, utiliz

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39

Grafton, R. Quentin, and Sarah Ann Wheeler. "Economics of Water Recovery in the Murray-Darling Basin, Australia." Annual Review of Resource Economics 10, no. 1 (October 5, 2018): 487–510. http://dx.doi.org/10.1146/annurev-resource-100517-023039.

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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 flo

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40

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, no. 2 (2020): 130. http://dx.doi.org/10.1071/pc18085.

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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 an

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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, no. 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 an

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42

Clifford, Katrina, and Rob White. "News media framing of the Murray–Darling Basin ‘water theft’ controversy." Journal of Criminology 54, no. 3 (March 22, 2021): 365–82. http://dx.doi.org/10.1177/00048658211000094.

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Abstract (sommario):

An Australian Broadcasting Corporation (ABC) Four Corners investigation, screened on free-to-air television on 24 July 2017, revealed a series of improper conducts pertaining to the Murray–Darling Basin river system. The journalistic exposé included allegations of water theft, questionable compliance decisions and collusion between water regulators and irrigation lobbyists. This interdisciplinary study explores the revelations and their framing in a sample of state and national media reports about the ‘water theft’ controversy and its fallout. It compares these with the normative frames adopte

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43

Campbell, Ian, Barry Hart, and Chris Barlow. "Integrated Management in Large River Basins: 12 Lessons from the Mekong and Murray-Darling Rivers." River Systems 20, no. 3 (April 1, 2013): 231–47. http://dx.doi.org/10.1127/1868-5749/2013/0067.

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44

Hughes, Jane M., and Mia J. Hillyer. "Patterns of connectivity among populations of Cherax destructor (Decapoda : Parastacidae) in western Queensland, Australia." Marine and Freshwater Research 54, no. 5 (2003): 587. http://dx.doi.org/10.1071/mf03066.

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Abstract (sommario):

Freshwater organisms are often hypothesized to reflect the hierarchical nature of stream channels in the genetic structure of their populations. However, patterns of genetic structure are also affected by the dispersal mechanism of the particular species and the nature of the river channels. In this study, the genetic structure of a freshwater crayfish, known to have the ability for terrestrial dispersal, was examined in a habitat where stream structure and elevational differences across catchment boundaries are minimal. It was found that levels of connectivity among populations in the same ca

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45

Alaghmand, S., S. Beecham, and A. Hassanli. "Fully integrated physically-based numerical modelling of impacts of groundwater extraction on surface and irrigation-induced groundwater interactions: case study Lower River Murray, Australia." Natural Hazards and Earth System Sciences Discussions 1, no. 4 (July 26, 2013): 3577–624. http://dx.doi.org/10.5194/nhessd-1-3577-2013.

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Abstract (sommario):

Abstract. Combination of reduction in the frequency, duration and magnitude of natural floods, rising saline water-table in floodplains and excessive evapotranspiration have led to an irrigation-induced groundwater mound forced the naturally saline groundwater onto the floodplain in the Lower River Murray. It is during the attenuation phase of floods that these large salt accumulations are likely to be mobilised and will discharge into the river. The Independent Audit Group for Salinity highlighted this as the most significant risk in the Murray–Darling Basin. South Australian government and c

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46

Colloff, Matthew J., Peter Caley, Neil Saintilan, Carmel A. Pollino, and Neville D. Crossman. "Long-term ecological trends of flow-dependent ecosystems in a major regulated river basin." Marine and Freshwater Research 66, no. 11 (2015): 957. http://dx.doi.org/10.1071/mf14067.

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Abstract (sommario):

The case for restoring water to the environment in the Murray–Darling Basin, Australia, is based mainly on condition assessments, although time series provide valuable information on trends. We assessed trends of 301 ecological time series (mean 23 years, range 1905–2013) in two categories: (1) ‘population’ (abundance, biomass, extent) and (2) ‘non-population’ (condition, occurrence, composition). We analysed trends using log-linear regression, accounting for observation error only, and a state–space model that accounts for observation error and environmental ‘noise’. Of the log-linear series

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47

Gough-Brady, Catherine. "“A River as a Character” (2019)." Video Journal of Education and Pedagogy 4, no. 2 (December 26, 2019): 140–46. http://dx.doi.org/10.1163/23644583-00401016.

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Abstract (sommario):

As a filmmaker, the author felt the need to develop a deep connection with her subject, but was unsure how to do so with the Murray-Darling River. Initially, she saw the river as a system akin to what Pierre Bourdieu calls a field: forces external to the author acting upon each other. She felt that to connect with the river she needed to adjust her habitus (personal dispositions; way of being) to its field. This continued once the author returned to Melbourne, but through the medium of the images of the river. During the edit, she shifted from seeing the river as a field of external forces to

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48

Alaghmand, S., S. Beecham, and A. Hassanli. "Impacts of groundwater extraction on salinization risk in a semi-arid floodplain." Natural Hazards and Earth System Sciences 13, no. 12 (December 23, 2013): 3405–18. http://dx.doi.org/10.5194/nhess-13-3405-2013.

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Abstract (sommario):

Abstract. In the lower River Murray in Australia, a combination of a reduction in the frequency, duration and magnitude of natural floods, rising saline water tables in floodplains, and excessive evapotranspiration have led to an irrigation-induced groundwater mound forcing the naturally saline groundwater onto the floodplain. It is during the attenuation phase of floods that these large salt accumulations are likely to be mobilised and discharged into the river. This has been highlighted as the most significant risk in the Murray–Darling Basin and the South Australian Government and catchment

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49

King, A. J., Z. Tonkin, and J. Lieshcke. "Short-term effects of a prolonged blackwater event on aquatic fauna in the Murray River, Australia: considerations for future events." Marine and Freshwater Research 63, no. 7 (2012): 576. http://dx.doi.org/10.1071/mf11275.

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Abstract (sommario):

Blackwater contains high levels of dissolved organic carbon that can be rapidly consumed by microbes, sometimes leading to extremely low levels of dissolved oxygen (hypoxia) and drastic consequences for aquatic life, including fish kills. Drought-breaking rains in late 2010 inundated large areas of the Barmah–Millewa Forest, southern Murray–Darling Basin, Australia, and resulted in a prolonged hypoxic blackwater event within the forest and the Murray River downstream. This study investigated the short-term effects of the blackwater event on fish and crayfish. Compared with non-affected sites,

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50

Growns, Ivor, Iris Wing Tsoi, Mark Southwell, Sarah Mika, Sam Lewis, and Ben Vincent. "The effects of hydrology on macroinvertebrate traits in river channel and wetland habitats." Aquatic Ecosystem Health & Management 24, no. 4 (October 1, 2021): 93–102. http://dx.doi.org/10.14321/aehm.024.04.12.

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Abstract (sommario):

Abstract Increased need for freshwater for human uses from the mid-1900s has severely impacted rivers and floodplain wetlands so that they are some of the most seriously degraded environments in the world. Research and monitoring in this area to date has focused on understanding ‘flow-ecology’ relationships, without investigating the mechanisms underlying them. The use of species traits offers a tool for defining mechanistic connections between biotic responses and environmental conditions. We examined nine macroinvertebrate trait categories in both wetlands and channels to determine whether t

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