Salinity tolerance of riverine microinvertebrates from the southern Murray-Darling Basin

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dc.contributor.author Kefford, Benjamin en_US
dc.contributor.author Fields, Ej en_US
dc.contributor.author Claya, C en_US
dc.contributor.author Nugegoda, Dayanthi en_US
dc.contributor.editor en_US
dc.date.accessioned 2011-02-07T06:20:43Z
dc.date.available 2011-02-07T06:20:43Z
dc.date.issued 2007 en_US
dc.identifier 2009006148 en_US
dc.identifier.citation Kefford Benjamin et al. 2007, 'Salinity tolerance of riverine microinvertebrates from the southern Murray-Darling Basin', CSIRO Publishing, vol. 58, no. 11, pp. 1019-1031. en_US
dc.identifier.issn 1323-1650 en_US
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/13321
dc.description.abstract Concern about the effect of rising salinity on freshwater biodiversity has led to studies investigating the salt tolerance of macroinvertebrates and fish, with less attention given to microinvertebrates. We investigated the acute lethal effects of salinity on 12 microinvertebrate species from rivers in the southern Murray-Darling Basin in central Victoria, Australia. For a subset of these species, sub-lethal salinity effects and the effect of water temperature on salinity tolerance were also investigated. The most sensitive microinvertebrates had broadly similar 72-h LC50 values to the most sensitive macroinvertebrates, reported in other studies. However, the most tolerant microinvertebrates tested were much more sensitive than the most tolerant macroinvertebrates and the microinvertebrates studied were more sensitive than most freshwater fish. Temperature affected the acute lethal toxicity of salinity but only to a small degree. In three of four species ( the exception being Hydra viridissima), the effects of salinity on growth, development and/or reproduction at concentrations below their 72-h LC50 values were observed. However, different endpoints responded differently to salinity. The demonstrated effect of salinity on microinvertebrates has the potential to indirectly affect fish and salt-tolerant macroinvertebrates via changes to their prey species or ecological functions performed by microinvertebrates. en_US
dc.language en_US
dc.publisher CSIRO Publishing en_US
dc.relation.isbasedon http://dx.doi.org/10.1071/MF06046 en_US
dc.title Salinity tolerance of riverine microinvertebrates from the southern Murray-Darling Basin en_US
dc.parent Marine and Freshwater Research en_US
dc.journal.volume 58 en_US
dc.journal.number 11 en_US
dc.publocation Collingwood en_US
dc.identifier.startpage 1019 en_US
dc.identifier.endpage 1031 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 060200 en_US
dc.personcode 109859 en_US
dc.personcode 0000062842 en_US
dc.personcode 0000062843 en_US
dc.personcode 034710 en_US
dc.percentage 100 en_US
dc.classification.name Ecology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity ISI:000251311100005 en_US
dc.description.keywords microcrustaceans; Newnhamia fenestra; salinisation; Simocephalus; zooplankton en_US
dc.staffid en_US
dc.staffid 034710 en_US


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