Environmental flow water and aquatic consumer food web structure: temporal aspects

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dc.contributor.authorIles, Jen_AU
dc.contributor.authorKobayashi, Ten_AU
dc.contributor.authorKnowles, Len_AU
dc.contributor.authorSaintilan, Nen_AU
dc.contributor.authorMazumder, Den_AU
dc.date.accessioned2010-09-21T03:37:46Zen_AU
dc.date.available2010-09-21T03:37:46Zen_AU
dc.date.issued2010-05-11en_AU
dc.date.statistics2010-05-11en_AU
dc.description.abstractWe examined the structure of a consumer food web in a swamp on the Lowbidgee floodplain which was inundated by an environmental flow for nine months. The food web structure was measured as a two-dimensional space (polygon) formed by mean δ13C and δ15N values of consumer species. The change in the food web structure was assessed by examining the shape and area of polygons. We found marked temporal changes in the consumer food web structure with the development of the swamp. The mean δ13C value of the consumer population decreased within the swamp indicating a consumer shift to a more 13C depleted food source. The amount of niche space occupied by the consumer population reduced although the nearest neighbour distance between species increased. We conclude that floodplain habitats such as inundated swamps in the Lowbidgee provide a broader range of food items to consumer species for relatively longer periods of time, enabling the food web structure to develop following an environmental flow.en_AU
dc.description.sponsorshipNSW Department of Environment, Climate Change and Water; CSIRO Water for a Healthy Country Flagshipen_AU
dc.identifier.citationIles, J., Kobayashi, Y., Knowles, L., Saintilan, N., & Mazumder, D. (2010). Environmental flow water and aquatic consumer food web structure: temporal aspects. Presentation to the Ecosystem Response Modelling in the Murray-Darling Basin: Better Use of Environmental Water, 11th - 12th May 2010. Sydney Olympic Park, Australia: Waterview Conference Centre, (pp. 23).en_AU
dc.identifier.conferenceenddate12 May 2010en_AU
dc.identifier.conferencenameEcosystem Response Modelling in the Murray-Darling Basin: Better Use of Environmental Wateren_AU
dc.identifier.conferenceplaceSydney Olympic Park, Australiaen_AU
dc.identifier.conferencestartdate11 May 2010en_AU
dc.identifier.govdoc2702en_AU
dc.identifier.pagination23en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2542en_AU
dc.language.isoenen_AU
dc.publisherNSW Department of Environment, Climate Change and Water, and the CSIRO Water for a Healthy Country Flagshipen_AU
dc.subjectFooden_AU
dc.subjectAquatic ecosystemsen_AU
dc.subjectSwampsen_AU
dc.subjectSpecies diversityen_AU
dc.subjectEnvironmental impactsen_AU
dc.subjectWateren_AU
dc.titleEnvironmental flow water and aquatic consumer food web structure: temporal aspectsen_AU
dc.typeConference Abstracten_AU
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