Zooplankton Dominance Shift in Response to Climate-Driven Salinity Change : A Mesocosm Study

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Hall , C A M & Lewandowska , A M 2022 , ' Zooplankton Dominance Shift in Response to Climate-Driven Salinity Change : A Mesocosm Study ' , Frontiers in Marine Science , vol. 9 , 861297 . https://doi.org/10.3389/fmars.2022.861297

Title: Zooplankton Dominance Shift in Response to Climate-Driven Salinity Change : A Mesocosm Study
Author: Hall, Clio A. M.; Lewandowska, Aleksandra M.
Contributor organization: Biological stations
Tvärminne Zoological Station
Marine Ecosystems Research Group
Ecosystems and Environment Research Programme
Date: 2022-06-03
Language: eng
Number of pages: 10
Belongs to series: Frontiers in Marine Science
ISSN: 2296-7745
DOI: https://doi.org/10.3389/fmars.2022.861297
URI: http://hdl.handle.net/10138/345841
Abstract: Climate change predictions indicate global changes in salinity with negative implications for plankton food webs; an important baseline for functioning of marine ecosystems. Current understanding of how salinity change will impact plankton communities is mostly limited to the salinization of freshwater environments, with little known about the effects of changing salinity in marine systems. In this study, we investigate the effect of salinity change on zooplankton communities under different salinity change scenarios of the Baltic Sea. Projections for future salinity change derived from regional physical-biogeochemical models were used to set-up an outdoor mesocosm experiment in the coastal area of the Gulf of Finland. Each mesocosm was inoculated with natural plankton using a mixture of both marine and freshwater communities, mimicking the natural influx of freshwater species from rivers into the Baltic Sea. Zooplankton diversity and composition changed possibly due to different salinity tolerances among the species. Among zooplankton, rotifers dominated in low salinities (74%) and cladocerans and copepods (69%) in high salinities. Our results suggest that the zooplankton community will shift to a rotifer dominated community in areas with declining salinity due to the intolerance of other zooplankton groups to freshening.
Subject: salinity
plankton
diversity
Baltic Sea
marine
brackish
habitat loss
climate change
FRESH-WATER
EURYTEMORA-AFFINIS
BALTIC SEA
CALANOID COPEPODS
ACARTIA-TONSA
LONG-TERM
COMMUNITIES
TEMPERATURE
DIVERSITY
ROTIFERS
1181 Ecology, evolutionary biology
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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