Fish productivity in the lower lakes and Coorong, Australia, during severe drought

Autor:	Kane T. Aldridge, Justin D. Brookes, Marcus Sheaves, Brenton P. Zampatti, Qifeng Ye, Chris Bice, David C. Paton, Greg J. Ferguson, B.M. Deegan
Rok vydání:	2015
Předmět:	geography geography.geographical_feature_category Ecology Paleontology Estuary Food web Salinity Water resources Fishery Hydrology (agriculture) Productivity (ecology) Habitat Anthropology Streamflow Environmental science General Agricultural and Biological Sciences General Environmental Science
Zdroj:	Transactions of the Royal Society of South Australia. 139:189-215
ISSN:	2204-0293 0372-1426
DOI:	10.1080/03721426.2015.1074338
Popis:	Anthropogenic modification of catchments and river flow can significantly alter estuarine habitats, hydrology and nutrient delivery with implications for fisheries productivity. The Coorong estuary at the terminus of Australia’s River Murray supports an economically important fishery as well as being recognised internationally as a critical site for migratory birds. Salinity near the Murray Mouth varies between fresh and marine depending upon river flow, but the Coorong becomes increasingly saline along its 120 km length. Freshwater flow to the Coorong is naturally variable but has significantly reduced by extraction for irrigated agriculture and domestic use upstream. Extreme drought from 2000 to 2010 and over-allocation of water resources resulted in the cessation of freshwater flow to the Coorong, significantly increasing salinity. During this period the diversity and abundance of organisms in the Coorong declined which reduced food web complexity. During lower flows the system generally becomes less p...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::01c0bfe047fd613f83a206b6953d4678 https://doi.org/10.1080/03721426.2015.1074338 Zobrazit plný text záznamu