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Ecological responses to variable water regimes in arid-zone wetlands: Coongie Lakes, Australia

Puckridge, J. T.; Costelloe, Justin F; Reid, Julian

Description

In dryland rivers, interactions between flow variability and complex geomorphology expose floodplain wetlands to long-term patterns of flooding and drying and highly variable short-term events. We consider whether the abundance and diversity of fish, macroinvertebrate and zooplankton communities in wetlands of the Coongie Lakes complex are influenced by long-term water regimes. To relate biological changes to changes in water regime, mean values of assemblage indices were ranked and correlated...[Show more]

dc.contributor.authorPuckridge, J. T.
dc.contributor.authorCostelloe, Justin F
dc.contributor.authorReid, Julian
dc.date.accessioned2015-12-08T22:18:42Z
dc.identifier.issn1323-1650
dc.identifier.urihttp://hdl.handle.net/1885/31469
dc.description.abstractIn dryland rivers, interactions between flow variability and complex geomorphology expose floodplain wetlands to long-term patterns of flooding and drying and highly variable short-term events. We consider whether the abundance and diversity of fish, macroinvertebrate and zooplankton communities in wetlands of the Coongie Lakes complex are influenced by long-term water regimes. To relate biological changes to changes in water regime, mean values of assemblage indices were ranked and correlated against ranked frequency of drying (i.e. water retention) in each waterbody. As water-retention time increased, fish species diversity (richness, evenness) and disease incidence rose, and fish species dominance and macroinvertebrate abundance decreased. The more mobile species of fish utilised the habitats and food resources provided by newly flooded waterbodies. We conclude that fish populations utilise wetlands with a variety of water regimes, and reductions in the frequency of inundation will decrease fish diversity with sequential losses of less mobile species.
dc.publisherCSLI Publications
dc.sourceMarine and Freshwater Research
dc.subjectKeywords: abundance; community response; disease incidence; dominance; fish; flooding; floodplain; flow pattern; fluvial geomorphology; food availability; hydrological regime; macroinvertebrate; resource use; species diversity; wetland; zooplankton; Australia; Coon Coongie Lakes; Cooper Creek; disease; diversity; dryland rivers; fish; flow regime; flow-ecology correlations; macroinvertebrates; Ramsar; variability; zooplankton
dc.titleEcological responses to variable water regimes in arid-zone wetlands: Coongie Lakes, Australia
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume61
dc.date.issued2010
local.identifier.absfor060204 - Freshwater Ecology
local.identifier.ariespublicationu4474437xPUB83
local.type.statusPublished Version
local.contributor.affiliationPuckridge, J. T., University of Adelaide
local.contributor.affiliationCostelloe, Justin F, University of Melbourne
local.contributor.affiliationReid, Julian, College of Medicine, Biology and Environment, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue8
local.bibliographicCitation.startpage832
local.bibliographicCitation.lastpage841
local.identifier.doi10.1071/MF09069
local.identifier.absseo960910 - Sparseland, Permanent Grassland and Arid Zone Land and Water Management
dc.date.updated2016-02-24T11:09:46Z
local.identifier.scopusID2-s2.0-77955828923
local.identifier.thomsonID000280848200002
CollectionsANU Research Publications

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