Anthropogenic shift of planktonic food web structure in a coastal lagoon by freshwater flow regulation

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dc.contributor.author Hemraj, Deevesh A
dc.contributor.author Hossain, Afzal
dc.contributor.author Ye, Q
dc.contributor.author Qin, Jianguang
dc.contributor.author Leterme, Sophie Catherine
dc.date.accessioned 2017-04-17T23:21:40Z
dc.date.available 2017-04-17T23:21:40Z
dc.date.issued 2017-03-22
dc.description This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ en
dc.description.abstract Anthropogenic modification of aquatic systems has diverse impacts on food web interactions and ecosystem states. To reverse the adverse effects of modified freshwater flow, adequate management of discharge is required, especially due to higher water requirements and abstractions for human use. Here, we look at the effects of anthropogenically controlled freshwater flow regimes on the planktonic food web of a Ramsar listed coastal lagoon that is under recovery from degradation. Our results show shifts in water quality and plankton community interactions associated to changes in water flow. These shifts in food web interactions represent modifications in habitat complexity and water quality. At high flow, phytoplankton-zooplankton interactions dominate the food web. Conversely, at low flow, bacteria, viruses and nano/picoplankton interactions are more dominant, with a substantial switch of the food web towards heterotrophy. This switch can be associated with excess organic matter loading, decomposition of dead organisms, and synergistic and antagonistic interactions. We suggest that a lower variability in flow amplitude could be beneficial for the long-term sustaining of water quality and food web interactions, while improving the ecosystem health of systems facing similar stresses as the Coorong. en
dc.identifier.citation Hemraj, D. A. et al. Anthropogenic shift of planktonic food web structure in a coastal lagoon by freshwater flow regulation. Sci. Rep. 7, 44441; doi: 10.1038/srep44441 (2017). en
dc.identifier.doi https://doi.org/10.1038/srep44441 en
dc.identifier.issn 2045-2322
dc.identifier.uri http://hdl.handle.net/2328/37168
dc.language.iso en
dc.oaire.license.condition.license CC-BY
dc.publisher Nature Publishing Group en
dc.relation http://purl.org/au-research/grants/arc/DP110101679 en
dc.relation.grantnumber ARC/DP110101679
dc.subject aquatic systems en
dc.subject Anthropogenic modification en
dc.subject ecosystem en
dc.subject Food en
dc.subject freshwater flow en
dc.subject water quality en
dc.subject plankton en
dc.subject Coorong. en
dc.title Anthropogenic shift of planktonic food web structure in a coastal lagoon by freshwater flow regulation en
dc.type Article en
local.contributor.authorOrcidLookup Leterme, Sophie Catherine: https://orcid.org/0000-0001-8455-7049 en_US
local.contributor.authorOrcidLookup Qin, Jianguang: http://orcid.org/0000-0003-2448-8058 en_US
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