Anthropogenic acceleration of sediment accretion in lowland floodplain wetlands, Murray–Darling Basin, Australia

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dc.contributor.authorGell, PAen_AU
dc.contributor.authorFluin, Jen_AU
dc.contributor.authorTibby, Jen_AU
dc.contributor.authorHancock, Gen_AU
dc.contributor.authorHarrison, JJen_AU
dc.contributor.authorZawadzki, Aen_AU
dc.contributor.authorHaynes, Den_AU
dc.contributor.authorKhanum, SIen_AU
dc.contributor.authorLittle, Fen_AU
dc.contributor.authorWalsh, Ben_AU
dc.date.accessioned2023-01-12T01:26:57Zen_AU
dc.date.available2023-01-12T01:26:57Zen_AU
dc.date.issued2009-07-01en_AU
dc.date.statistics2022-11-02en_AU
dc.description.abstractOver the last decade there has been a deliberate focus on the application of paleolimnological research to address issues of sediment flux and water quality change in the wetlands of the Murray–Darling Basin of Australia. This paper reports on the research outcomes on cores collected from sixteen wetlands along the Murrumbidgee–Murray River continuum. In all sixteen wetlands radiometric techniques and exotic pollen biomarkers were used to establish sedimentation rates from the collected cores. Fossil diatom assemblages were used to identify water source and quality changes to the wetlands. The sedimentation rates of all wetlands accelerated after European settlement, as little as two-fold, and as much as eighty times the mean rate through the Late Holocene. Some wetlands completely infilled through the Holocene, while others have rapidly progressed towards a terrestrial state due to accelerated accretion rates. Increasing wetland salinity and turbidity commenced within decades of settlement, contributing to sediment inputs. The sedimentation rate was observed to slow after river regulation in one wetland, but has accelerated recently in others. The complex history of flooding and drying, and wetland salinisation and eutrophication, influence the reliability of models used to establish recent, fine-resolution chronologies with confidence and the capacity to attribute causes to documented effects. © 2009 Elsevier B.Ven_AU
dc.description.sponsorshipThe research was supported by ARC Linkage (with River Murray Catchment Water Management Board) grant number LP0560552 to PG; ARC Linkage (with South Australian Departments of Water, Land and Biodiversity Conservation and Environment and Heritage) grant number LP0667819 to PG; AINSE grant number AINGRA05062 to PG, JT and David McKirdy; the Murrumbidgee Catchment Management Authority; The University of Adelaide, Monash University, an Australian Postgraduate Award to JF, an Australian International Scholarship to SK and Adelaide University Science Faculty Scholarships to DH and FL.en_AU
dc.identifier.citationGell, P., Fluin, J., Tibby, J., Hancock, G., Harrison, J., Zawadzki, A., Haynes, D., Khanum, S., Little, F. & Walsh, B. (2009). Anthropogenic acceleration of sediment accretion in lowland floodplain wetlands, Murray–Darling Basin, Australia. Geomorphology, 108(1-2), 122-126. doi:10.1016/j.geomorph.2007.12.020en_AU
dc.identifier.issn0169-555Xen_AU
dc.identifier.issue1-2en_AU
dc.identifier.journaltitleGeomorphologyen_AU
dc.identifier.pagination122-126en_AU
dc.identifier.urihttps://doi.org/10.1016/j.geomorph.2007.12.020en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14324en_AU
dc.identifier.volume108en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectSedimentationen_AU
dc.subjectWetlandsen_AU
dc.subjectTurbidityen_AU
dc.subjectSalinityen_AU
dc.subjectWater qualityen_AU
dc.subjectLeaden_AU
dc.subjectAustraliaen_AU
dc.titleAnthropogenic acceleration of sediment accretion in lowland floodplain wetlands, Murray–Darling Basin, Australiaen_AU
dc.typeJournal Articleen_AU
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