Synergistic effects of extreme temperature and low salinity on foundational macroalga Fucus vesiculosus in the northern Baltic Sea

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dc.contributor.author Takolander, Antti Aleksander
dc.contributor.author Leskinen, Elina Tellervo
dc.contributor.author Cabeza-Jaimejuan, Maria Del Mar
dc.date.accessioned 2019-03-20T22:54:14Z
dc.date.available 2021-12-17T22:03:00Z
dc.date.issued 2017-10
dc.identifier.citation Takolander , A A , Leskinen , E T & Cabeza-Jaimejuan , M D M 2017 , ' Synergistic effects of extreme temperature and low salinity on foundational macroalga Fucus vesiculosus in the northern Baltic Sea ' , Journal of Experimental Marine Biology and Ecology , vol. 495 , pp. 110-118 . https://doi.org/10.1016/j.jembe.2017.07.001
dc.identifier.other PURE: 87981800
dc.identifier.other PURE UUID: 79eaee4b-328f-4b17-863f-45853e40f35a
dc.identifier.other Scopus: 85023618723
dc.identifier.other WOS: 000411421100013
dc.identifier.other ORCID: /0000-0002-7410-7631/work/39204632
dc.identifier.other ORCID: /0000-0002-9237-3765/work/39205914
dc.identifier.uri http://hdl.handle.net/10138/300243
dc.description.abstract Climate change has been identified as one of the biggest current drivers of environmental change. Climate model projections for the Baltic Sea forecast increased frequency and duration of extreme temperatures, together with declines in salinity, which are expected to have impacts on the biota. In this experimental study, the interacting effects of low salinity and short-term (8 days) extreme seawater temperatures, followed by an 11-day recovery period, on the foundational macroalga, Fucus vesiculosus, were investigated. To account for potential variation in the responses at local scale, individuals originating from two different local populations, a warm and a cold site were included. In experiments manipulating temperature (20 °C to 28 °C) and salinity (4 or 6), it was found that even an 8-day exposure to 26 °C or higher was detrimental to F. vesiculosus, causing extensive tissue necrosis. Tissue necrosis was enhanced by low salinity. Photosynthesis, measured as the steady-state electron transport rate (ETR) and maximum ETR, declined at 26 °C, and this effect was also enhanced by low salinity. Temperatures above 26 °C caused declines in light-limited photosynthetic efficiency (α), indicating direct physiological damage to PS II reaction centers. After 11 days of recovery, some photosynthetic parameters recovered in the 26 °C, but not in the 28 °C treatment. It is concluded that Baltic F. vesiculosus populations may be severely affected even by short-term (8 days) exposure to high seawater temperatures when combined with the synergistic effects of low salinity predicted for the future Baltic Sea. en
dc.language.iso eng
dc.relation.ispartof Journal of Experimental Marine Biology and Ecology
dc.rights cc_by_nc_nd
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 1172 Environmental sciences
dc.title Synergistic effects of extreme temperature and low salinity on foundational macroalga Fucus vesiculosus in the northern Baltic Sea en
dc.type Article
dc.contributor.organization Biosciences
dc.contributor.organization Centre of Excellence in Metapopulation Research
dc.contributor.organization Tvärminne Zoological Station
dc.contributor.organization Environmental Sciences
dc.contributor.organization Mar Cabeza-Jaimejuan / Principal Investigator
dc.contributor.organization Ecology and Evolutionary Biology
dc.contributor.organization Marine Ecosystems Research Group
dc.contributor.organization Global Change and Conservation Lab
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1016/j.jembe.2017.07.001
dc.relation.issn 0022-0981
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

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