- Title
- Changes in the chemistry of sedimentary organic matter within the Coorong over space and time
- Creator
- Krull, Evelyn; Haynes, Deborah; Lamontagne, Sebastien; Gell, Peter; McKirdy, David; Hancock, Gary; McGowan, Janine; Smernik, Ronald
- Date
- 2009
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/40721
- Identifier
- vital:1707
- Identifier
-
https://doi.org/10.1007/s10533-008-9236-1
- Identifier
- ISSN:
- Abstract
- Like many other coastal systems across the world, the Coorong lagoonal ecosystem (South Australia) has degraded over the last 100 years; in this case as a result of extensive regulation and diversions of water across the Murray-Darling Basin following European settlement. To evaluate whether the sources of organic matter (OM) supporting its food-web have changed since the inception of water management and barrage construction, sedimentary OM was characterised in cores spanning the Coorong’s salinity gradient at depths representative of the last 100 years over which the management alterations to river and estuarine flow were most marked. Detailed 210Pb, 137Cs and Pu dating in conjunction with palaeolimnological data (Pinus pollen) allowed for the reconstruction of the timing of substantial changes observed in the composition of the OM, most of which occur during the early 1950s, concurrent with management-related variations in water flow and salinity. Negative shifts in
- Publisher
- Springer
- Relation
- Biogeochemistry Vol. 92, no. 1-2 (2009), p. 9-25
- Rights
- Copyright Springer
- Rights
- Open Access
- Rights
- This metadata is freely available under a CCO license
- Subject
- Coorong; Carbon isotopes; Organic matter
- Full Text
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