- Title
- Tracking a century of change in trophic structure and dynamics in a floodplain wetland: Integrating palaeoecological and palaeoisotopic evidence
- Creator
- Kattel, Giri; Gell, Peter; Perga, Marie-Elodie; Jeppesen, Erik; Grundell, Rosie; Weller, Sandra; Zawadzki, Atun; Barry, Linda
- Date
- 2015
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/76941
- Identifier
- vital:7634
- Identifier
-
https://doi.org/10.1111/fwb.12521
- Identifier
- ISSN:0046-5070
- Abstract
- The palaeoecological assessment, and the use of stable isotopes of carbon in subfossils of herbivores and omnivores, represents a novel approach to understand transitions in past food-web structure and the dynamics of lake ecosystems in response to natural perturbations and human impacts. Combined with records of subfossil assemblages of cladocerans and chironomids, it may be possible to decipher whether changes are attributable to external forces or internally derived system shifts. A sediment record taken from the shallow (2.3 m depth) Kings Billabong in the River Murray floodplain (Australia) was analysed to explore changes in trophic dynamics over the past century. The palaeoecological assessment revealed that littoral assemblages of cladocerans and benthic diatoms were gradually replaced by planktonic (planktonic and facultative planktonic) assemblages after river regulation in the 1920s. The stable isotopic composition of carbon (
- Publisher
- Blackwell Publishing Ltd
- Relation
- Freshwater Biology Vol. 60, no. 4 (2015), p. 711-723
- Rights
- Copyright © 2014 John Wiley & Sons Ltd.
- Rights
- Open Access
- Rights
- This metadata is freely available under a CCO license
- Subject
- 05 Environmental Sciences; 06 Biological Sciences; Kings Billabong; Palaeo-food web structure; River Murray system Australia; Stable carbon isotope; Subfossil cladocerans and chironomids; Alona; Bacillariophyta; Bosmina; Chironomidae; Daphnia
- Full Text
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