Articles | Volume 19, issue 8
Research article
29 Apr 2022
Research article |  | 29 Apr 2022

Species richness and functional attributes of fish assemblages across a large-scale salinity gradient in shallow coastal areas

Birgit Koehler, Mårten Erlandsson, Martin Karlsson, and Lena Bergström

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Cited articles

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Appeltans, W., Ahyong, S. T., Anderson, G., Angel, M. V., Artois, T., Bailly, N., Bamber, R., Barber, A., Bartsch, I., and Berta, A.: The magnitude of global marine species diversity, Curr. Biol., 22, 2189–2202,, 2012. 
Bastardie, F., Brown, E. J., Andonegi, E., Arthur, R., Beukhof, E., Depestele, J., Döring, R., Ritzau Eigaard, O., García-Barón, I., Llope, M., Mendes, H., Piet, G. J., and Reid, D.: A review characterizing 25 ecosystem challenges to be addressed by an ecosystem approach to fisheries management in Europe, Front. Mar. Sci., 7, 629186,, 2021. 
Berkström, C., Wennerström, L., and Bergström, U.: Ecological connectivity of the marine protected area network in the Baltic Sea, Kattegat and Skagerrak: Current knowledge and management needs, Ambio, 51, 1485–1503,, 2021. 
Bergström, L., Karlsson, M., and Pihl, L.: Comparison of gill nets and fyke nets for the status assessment of coastal fish communities, Deliverable 3.4-2, WATERS Report no. 2013:7, Havsmiljöinstitutet, Sweden, (last access: 21 April 2021), 2013. 
Short summary
Understanding species richness patterns remains a challenge for biodiversity management. We estimated fish species richness over a coastal salinity gradient (3–32) with a method that allowed comparing data from various sources. Species richness was 3-fold higher at high vs. low salinity, and salinity influenced species’ habitat preference, mobility and feeding type. If climate change causes upper-layer freshening of the Baltic Sea, further shifts along the identified patterns may be expected.
Final-revised paper