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      Environmental variables driving species and genus level changes in annual plankton biomass

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          Abstract

          Abiotic variables subject to global change are known to affect plankton biomasses, and these effects can be species-specific. Here, we investigate the environmental drivers of annual biomass using plankton data from the Gulf of Finland in the northern Baltic Sea, spanning years 1993–2016. We estimated annual biomass time-series of 31 nanoplankton and microplankton species and genera from day-level data, accounting for the average phenology and wind. We found wind effects on day-level biomass in 16 taxa. We subsequently used state-space models to connect the annual biomass changes with potential environmental drivers (temperature, salinity, stratification, ice cover and inorganic nutrients), simultaneously accounting for temporal trends. We found clear environmental effects influencing the annual biomasses of Dinobryon faculiferum, Eutreptiella spp., Protoperidinium bipes, Pseudopedinella spp., Snowella spp. and Thalassiosira baltica and indicative effects in 10 additional taxa. These effects mostly concerned temperature, salinity or stratification. Together, these 16 taxa represent two-thirds of the summer biomass in the sampled community. The inter-annual variability observed in salinity and temperature is relatively low compared to scenarios of predicted change in these variables. Therefore, the potential impacts of the presented effects on plankton biomasses are considerable.

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                Author and article information

                Contributors
                Role: Corresponding Editor
                Journal
                J Plankton Res
                J. Plankton Res
                plankt
                Journal of Plankton Research
                Oxford University Press
                0142-7873
                1464-3774
                November 2019
                19 December 2019
                19 December 2019
                : 41
                : 6
                : 925-938
                Affiliations
                [1 ] ENVIRONMENTAL AND MARINE BIOLOGY , ÅBO AKADEMI UNIVERSITY, Artillerigatan 6, 20520 ÅBO, Finland
                [2 ] Marine Research Laboratory , MARINE RESEARCH CENTRE, FINNISH ENVIRONMENT INSTITUTE, Agnes Sjöbergin Latu 2, 00790 HELSINKI, Finland
                [3 ] Bioeconomy team , NOVIA UNIVERSITY OF APPLIED SCIENCES, Raseborgsvägen 9, 10600 EKENäS, Finland
                [4 ] DEPARTMENT OF MARINE SYSTEMS , TALLINN UNIVERSITY OF TECHNOLOGY, Akadeemia Rd. 15A, 12618 TALLINN, Estonia
                Author notes
                CORRESPONDING AUTHOR: louise.forsblom@ 123456abo.fi
                fbz063
                10.1093/plankt/fbz063
                6946087
                © The Author(s) 2019. Published by Oxford University Press.

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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                Pages: 14
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                Funding
                Funded by: Åbo Akademi 10.13039/501100008019
                Funded by: Svenska Kulturfonden 10.13039/501100007247
                Award ID: 140043
                Funded by: Ministry of Education and Research 10.13039/501100003510
                Award ID: IUT19-6
                Funded by: Estonian Science Foundation 10.13039/501100001837
                Award ID: 6752
                Award ID: 8930
                Funded by: EU Regional Development
                Funded by: Environmental Conservation and Environmental Technology R&D Program
                Award ID: 3.2.0802.11-0043
                Funded by: Estonian National Open Sea Monitoring Program
                Funded by: Finnish Environment Institute 10.13039/501100013300
                Funded by: Academy of Finland 10.13039/501100002341
                Award ID: 276947
                Categories
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