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  • Title: A climate vulnerability assessment of the fish community in the Western Baltic Sea.
    Author: Moll D, Asmus H, Blöcker A, Böttcher U, Conradt J, Färber L, Funk N, Funk S, Gutte H, Hinrichsen HH, Kotterba P, Krumme U, Madiraca F, Meier HEM, Meyer S, Moritz T, Otto SA, Pinto G, Polte P, Riekhof MC, Sarrazin V, Scotti M, Voss R, Winkler H, Möllmann C.
    Journal: Sci Rep; 2024 Jul 13; 14(1):16184. PubMed ID: 39003317.
    Abstract:
    Marine fisheries are increasingly impacted by climate change, affecting species distribution and productivity, and necessitating urgent adaptation efforts. Climate vulnerability assessments (CVA), integrating expert knowledge, are vital for identifying species that could thrive or suffer under changing environmental conditions. This study presents a first CVA for the Western Baltic Sea's fish community, a crucial fishing area for Denmark and Germany. Characterized by a unique mix of marine, brackish, and freshwater species, this coastal ecosystem faces significant changes due to the combined effects of overfishing, eutrophication and climate change. Our CVA involved a qualitative expert scoring of 22 fish species, assessing their sensitivity and exposure to climate change. Our study revealed a dichotomy in climate change vulnerability within the fish community of the Western Baltic Sea because traditional fishing targets cod and herring as well as other species with complex life histories are considered to face increased risks, whereas invasive or better adaptable species might thrive under changing conditions. Our findings hence demonstrate the complex interplay between life-history traits and climate change vulnerability in marine fish communities. Eventually, our study provides critical knowledge for the urgent development of tailored adaptation efforts addressing existing but especially future effects of climate change on fish and fisheries in the Western Baltic Sea, to navigate this endangered fisheries systems into a sustainable future.
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