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Functional shifts in estuarine zooplankton in response to climate variability and eutrophication
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  • Anna Jansson,
  • Riina Klais,
  • Evelina Griniene,
  • Gunta Rubene,
  • Anna Semenova,
  • Aleksandra Lewandowska,
  • Jonna Engström-Öst
Anna Jansson
Novia University of Applied Sciences Raasepori Campus
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Riina Klais
Ecostat Ltd
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Evelina Griniene
Klaipeda University
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Gunta Rubene
Institute of Food Safety Animal Health and Environment
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Anna Semenova
Atlantic Branch of the Russian Federal Research Institute for Fisheries and Oceanography
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Aleksandra Lewandowska
University of Helsinki
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Jonna Engström-Öst
Novia University of Applied Sciences Raasepori Campus
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Abstract

Functional traits are becoming more common in the analysis of marine zooplankton community dynamics associated with environmental change. We use zooplankton groups with common functional properties to assess long-term trends in the zooplankton caused by certain environmental conditions in a highly eutrophicated gulf. Time series of zooplankton traits were collected since 1960 in the Gulf of Riga, Baltic Sea and were analysed using general additive model, principal component analysis, and multivariate model. One of the most significant changes was the considerable increase in the amount of the zooplankton functional groups (FGR) in coastal springtime communities, and dominance shifts from more complex to simpler organism groups – cladocerans and rotifers. The results also show that the functional trait organism complexity (body size) decreased considerably due to cladoceran and rotifer increase following elevated water temperature. Salinity and oxygen had negligible effects on the zooplankton community.

Peer review status:ACCEPTED

23 Jan 2020Submitted to Ecology and Evolution
24 Jan 2020Submission Checks Completed
24 Jan 2020Assigned to Editor
29 Jan 2020Reviewer(s) Assigned
28 Feb 2020Review(s) Completed, Editorial Evaluation Pending
02 Mar 2020Editorial Decision: Revise Minor
03 Jul 20201st Revision Received
03 Jul 2020Submission Checks Completed
03 Jul 2020Assigned to Editor
03 Jul 2020Review(s) Completed, Editorial Evaluation Pending
06 Jul 2020Editorial Decision: Revise Minor
09 Jul 20202nd Revision Received
10 Jul 2020Submission Checks Completed
10 Jul 2020Assigned to Editor
10 Jul 2020Review(s) Completed, Editorial Evaluation Pending
14 Jul 2020Editorial Decision: Accept