Hydrological connectivity and ecological functional processes in inland floodplain wetlands: nutrient and carbon cycling

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dc.contributor.authorWassens, Sen_AU
dc.contributor.authorRalph, TJen_AU
dc.contributor.authorRyder, DSen_AU
dc.contributor.authorSaintilan, Nen_AU
dc.contributor.authorMazumder, Den_AU
dc.contributor.authorWen, Len_AU
dc.contributor.authorHunter, Sen_AU
dc.contributor.authorKobayashi, Ten_AU
dc.date.accessioned2020-06-03T09:52:21Zen_AU
dc.date.available2020-06-03T09:52:21Zen_AU
dc.date.issued2013-12-03en_AU
dc.date.statistics2020-05-28en_AU
dc.description.abstractFloodplain wetlands have intricate multi-channeled networks and unpredictable wet and dry phases related to variable hydrological regimes and geomorphic processes such as sedimentation and erosion. Hydrological reconnection of river channels with outer floodplain and wetland habitats initiates mobilisation and transformation of nutrients and carbon in inland floodplain wetlands. In this study, we aim to show habitat-dependent patterns of mobilisation and transformation of nutrients (total and dissolved nitrogen and phosphorus) and dissolved organic carbon (DOC) following environmental water releases, based on the available data from the Murrumbidgee Wetlands, Macquarie Marshes and Gwydir Wetlands. In general, concentrations of nutrients and DOC are lower within channels and higher on the floodplain and in wetlands where shallow inundation and mixing of topsoil with water occurs. Higher concentrations of nutrients and DOC on the floodplain represent a combination of supply from channels coupled with in situ releases from the water-soil interface. The volume, timing, depth, rate of rise and fall, and spatial distribution of water being introduced to floodplain wetlands influence the amount and distribution of nutrients and carbon in these systems. Rates of ecological functional processes such as primary productivity and respiration (or decomposition) are closely related to concentrations of nutrients and DOC. We propose a nutrient-DOC framework, combined with hydrological regimes and geomorphic processes, to better predict and understand the relationship between hydrological connectivity and ecological responses of inland floodplain wetlands. © The Authorsen_AU
dc.identifier.citationKobayashi, T., Wassens, S., Ralph, T. J., Ryder, D. S., Saintilan, N., Mazumder, D., Wen, L., & Hunter, S. J. (2013). Hydrological connectivity and ecological functional processes in inland floodplain wetlands: nutrient and carbon cycling. Paper presented at the 52nd Australian Society for Limnology Congress University of Canberra, ACT., 2nd - 5th December 2013.en_AU
dc.identifier.conferenceenddate5 December 2013en_AU
dc.identifier.conferencename52nd Australian Society for Limnologyen_AU
dc.identifier.conferenceplaceCanberra, Australiaen_AU
dc.identifier.conferencestartdate2 December 2013en_AU
dc.identifier.govdoc9609en_AU
dc.identifier.urihttp://asl-2013.p.asnevents.com.au/days/2013-12-03/abstract/9649en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9505en_AU
dc.language.isoenen_AU
dc.publisherAustralian Society for Limnologyen_AU
dc.subjectHydrologyen_AU
dc.subjectEcologyen_AU
dc.subjectWetlandsen_AU
dc.subjectAquatic ecosystemsen_AU
dc.subjectNutrientsen_AU
dc.subjectCarbon cycleen_AU
dc.subjectSedimentationen_AU
dc.subjectErosionen_AU
dc.subjectRiversen_AU
dc.subjectWateren_AU
dc.subjectSoilsen_AU
dc.titleHydrological connectivity and ecological functional processes in inland floodplain wetlands: nutrient and carbon cyclingen_AU
dc.typeConference Posteren_AU
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