Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/6953
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dc.contributor.authorJenkins, Kim Men
dc.contributor.authorBoulton, Andrewen
dc.date.accessioned2010-12-01T15:21:00Z-
dc.date.issued2007-
dc.identifier.citationJournal of Applied Ecology, 44(4), p. 823-832en
dc.identifier.issn1365-2664en
dc.identifier.issn1472-0043en
dc.identifier.issn0021-8901en
dc.identifier.urihttps://hdl.handle.net/1959.11/6953-
dc.description.abstract1. Water extraction from arid-zone rivers increases the time between floods across their floodplain wetlands. Less frequent flooding in Australian arid-zone rivers has impaired waterbird and fish breeding, killed riparian vegetation and diminished invertebrate and macrophyte communities. Restoration currently focuses on reinstating floods to rejuvenate floodplain wetlands, yet indicators to measure the success of this are poorly developed. 2. We explored the application of criteria for ecologically successful river restoration to potential restoration of floodplain wetlands on the Darling River, arid-zone Australia. Using emergence of micro-invertebrates from resting eggs as an indicator, we compared responses of taxa richness, densities and community composition in floodplain lakes with different inundation histories. 3. Increased drying of floodplain lakes reduced the number of micro-invertebrate taxa. Several key taxa were absent and faunal densities (particularly cladocerans) were reduced when the duration of drying increased from 6 to 20 years. 4. A conceptual model of the ecological mechanisms by which restoration of flooding regime could achieve the target of preserving micro-invertebrate community resilience predicts that reducing the dry period between floods will minimize losses of viable resting eggs. Protection of this 'egg bank' permits a boom in micro-invertebrates after flooding, promoting successful recruitment by native fish and waterbirds. 5. Synthesis and applications. In arid-zone rivers, micro-invertebrate densities and community composition are useful indicators of the impact of reduced flooding as a result of water extraction. Critical to successful native fish recruitment as their first feed and as prey for waterbirds, micro-invertebrates are a potential early indicator of responses by higher trophic levels. Taxon richness, density and key taxa present after flooding, all indicators of resilience, can be incorporated into targets for arid-zone river restoration. For example, one restoration target may be microcrustacean densities between 100 and 1000 L⁻¹ within 2–3 weeks after spring flooding. These criteria can be applied to measure the ecological success of restoration projects seeking to recover natural flood regimes. Given the high economic cost of water in arid zones, convincing demonstrations of the ecological success of environmental water allocations are crucial.en
dc.languageenen
dc.publisherWiley-Blackwell Publishing Ltden
dc.relation.ispartofJournal of Applied Ecologyen
dc.titleDetecting impacts and setting restoration targets in arid-zone rivers: aquatic micro-invertebrate responses to reduced floodplain inundationen
dc.typeJournal Articleen
dc.identifier.doi10.1111/j.1365-2664.2007.01298.xen
dc.subject.keywordsFreshwater Ecologyen
local.contributor.firstnameKim Men
local.contributor.firstnameAndrewen
local.subject.for2008060204 Freshwater Ecologyen
local.subject.seo2008960999 Land and Water Management of Environments not elsewhere classifieden
local.profile.schoolAdministrationen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailkjenkin6@une.edu.auen
local.profile.emailaboulton@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordpes:5933en
local.publisher.placeUnited Kingdomen
local.format.startpage823en
local.format.endpage832en
local.identifier.scopusid34347384607en
local.peerreviewedYesen
local.identifier.volume44en
local.identifier.issue4en
local.title.subtitleaquatic micro-invertebrate responses to reduced floodplain inundationen
local.contributor.lastnameJenkinsen
local.contributor.lastnameBoultonen
dc.identifier.staffune-id:kjenkin6en
dc.identifier.staffune-id:aboultonen
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:7116en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleDetecting impacts and setting restoration targets in arid-zone riversen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorJenkins, Kim Men
local.search.authorBoulton, Andrewen
local.uneassociationUnknownen
local.identifier.wosid000247667100012en
local.year.published2007en
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