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

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dc.contributor.authorHemraj, Deevesh A
dc.contributor.authorHossain, Afzal
dc.contributor.authorYe, Q
dc.contributor.authorQin, Jianguang
dc.contributor.authorLeterme, Sophie Catherine
dc.date.accessioned2017-04-17T23:21:40Z
dc.date.available2017-04-17T23:21:40Z
dc.date.issued2017-03-22
dc.descriptionThis 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.abstractAnthropogenic 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.citationHemraj, 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.doihttps://doi.org/10.1038/srep44441en
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/2328/37168
dc.language.isoen
dc.oaire.license.condition.licenseCC-BY
dc.publisherNature Publishing Groupen
dc.relationhttp://purl.org/au-research/grants/arc/DP110101679en
dc.relation.grantnumberARC/DP110101679
dc.subjectaquatic systemsen
dc.subjectAnthropogenic modificationen
dc.subjectecosystemen
dc.subjectFooden
dc.subjectfreshwater flowen
dc.subjectwater qualityen
dc.subjectplanktonen
dc.subjectCoorong.en
dc.titleAnthropogenic shift of planktonic food web structure in a coastal lagoon by freshwater flow regulationen
dc.typeArticleen
local.contributor.authorOrcidLookupLeterme, Sophie Catherine: https://orcid.org/0000-0001-8455-7049en_US
local.contributor.authorOrcidLookupQin, Jianguang: http://orcid.org/0000-0003-2448-8058en_US
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