Research article - Peer-reviewed, 2022
Deoxygenation impacts on Baltic Sea cod: Dramatic declines in ecosystem services of an iconic keystone predator
Orio, Alessandro; Heimbrand, Yvette; Limburg, KarinAbstract
The intensified expansion of the Baltic Sea's hypoxic zone has been proposed as one reason for the current poor status of cod (Gadus morhua) in the Baltic Sea, with repercussions throughout the food web and on ecosystem services. We examined the links between increased hypoxic areas and the decline in maximum length of Baltic cod, a demographic proxy for services generation. We analysed the effect of different predictors on maximum length of Baltic cod during 1978-2014 using a generalized additive model. The extent of minimally suitable areas for cod (oxygen concentration >= 1 ml l(-1)) is the most important predictor of decreased cod maximum length. We also show, with simulations, the potential for Baltic cod to increase its maximum length if hypoxic areal extent is reduced to levels comparable to the beginning of the 1990s. We discuss our findings in relation to ecosystem services affected by the decrease of cod maximum length.Keywords
Baltic Sea; Cod (Gadus morhua); Deoxygenation; Ecosystem services; Hypoxia; Maximum lengthPublished in
AMBIO: A Journal of the Human Environment2022, volume: 51, number: 3, pages: 626-637
Publisher: SPRINGER
Authors' information
Swedish University of Agricultural Sciences, Department of Aquatic Resources
Swedish University of Agricultural Sciences, Department of Aquatic Resources
Swedish University of Agricultural Sciences, Department of Aquatic Resources
State University of New York College of Environmental Science and Forestry (SUNY-ESF)
Associated SLU-program
Coastal and sea areas
Sustainable Development Goals
SDG14 Life below water
UKÄ Subject classification
Fish and Aquacultural Science
Publication Identifiers
DOI: https://doi.org/10.1007/s13280-021-01572-4
URI (permanent link to this page)
https://res.slu.se/id/publ/112059