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Breeding Flow Thresholds of Colonial Breeding Waterbirds in the Murray-Darling Basin, Australia

Arthur, Anthony D.; Reid, Julian; Kingsford, R T; McGinness, A. C.; Ward, Keith A.; Harper, Mike J.

Description

Biodiversity on floodplains is under increasing pressure as demand for water for human needs expands. Understanding how waterbirds respond to river flows feeding floodplain wetlands is critical for successful management. We analysed data on breeding by colonial breeding large waders-Eastern Great Egret Ardea modesta, Intermediate Egret Ardea intermedia, Little Egret Egretta garzetta, Nankeen Night Heron Nycticorax caledonicus, Australian White Ibis Threskiornis molucca, Glossy Ibis Plegadis...[Show more]

dc.contributor.authorArthur, Anthony D.
dc.contributor.authorReid, Julian
dc.contributor.authorKingsford, R T
dc.contributor.authorMcGinness, A. C.
dc.contributor.authorWard, Keith A.
dc.contributor.authorHarper, Mike J.
dc.date.accessioned2015-12-10T23:07:32Z
dc.identifier.issn0277-5212
dc.identifier.urihttp://hdl.handle.net/1885/62928
dc.description.abstractBiodiversity on floodplains is under increasing pressure as demand for water for human needs expands. Understanding how waterbirds respond to river flows feeding floodplain wetlands is critical for successful management. We analysed data on breeding by colonial breeding large waders-Eastern Great Egret Ardea modesta, Intermediate Egret Ardea intermedia, Little Egret Egretta garzetta, Nankeen Night Heron Nycticorax caledonicus, Australian White Ibis Threskiornis molucca, Glossy Ibis Plegadis falcinellus, Straw-necked Ibis Threskiornis spinicollis, and Royal Spoonbill Platalea regia-in response to river flow for three wetlands in the Murray- Darling Basin, Australia. Each wetland, which included Barmah-Millewa, the Macquarie Marshes, and Lake Merreti, has a distinctive geomorphology and hydrology. There were clear consistent thresholds of flow producing a >0.7 probability of attempted breeding by most species when a daily flow threshold was exceeded for 30-50 days. Flow characteristics were highly correlated and thresholds could also be expressed in terms of the total flow volume July-December and peak flow in September or October. Below thresholds, there was zero probability of breeding for most species. These minimum thresholds provide critical information for management of these wetlands. Our approach provides an analytical framework for estimating thresholds for other floodplains.
dc.publisherCoast and Wetlands Society Inc.
dc.sourceWetlands
dc.subjectKeywords: biodiversity; floodplain; geomorphology; habitat conservation; management practice; peak flow; physiological response; reproductive behavior; threshold; volume; waterfowl; Australia; Murray-Darling Basin; Ardea; Ardea alba; Egretta garzetta; Eudocimus; Ib Breeding responses; Floodplain ecology; Floodplain wetlands; River management
dc.titleBreeding Flow Thresholds of Colonial Breeding Waterbirds in the Murray-Darling Basin, Australia
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume32
dc.date.issued2012
local.identifier.absfor050202 - Conservation and Biodiversity
local.identifier.ariespublicationu4279067xPUB751
local.type.statusPublished Version
local.contributor.affiliationArthur, Anthony D., CSIRO Ecosystem Sciences
local.contributor.affiliationReid, Julian, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationKingsford, R T, University of New South Wales
local.contributor.affiliationMcGinness, A. C., CSIRO Ecosystem Sciences
local.contributor.affiliationWard, Keith A., Goulburn Broken CMA
local.contributor.affiliationHarper, Mike J., Department of Environment and Natural Resources
local.description.embargo2037-12-31
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage257
local.bibliographicCitation.lastpage265
local.identifier.doi10.1007/s13157-011-0235-y
local.identifier.absseo960806 - Forest and Woodlands Flora, Fauna and Biodiversity
dc.date.updated2016-02-24T10:52:50Z
local.identifier.scopusID2-s2.0-84863720745
local.identifier.thomsonID000302031800007
CollectionsANU Research Publications

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