Ecological and functional consequences of coastal ocean acidification: Perspectives from the Baltic-Skagerrak System

Jonathan N. Havenhand, Helena L. Filipsson, Susa Niiranen, Max Troell, Anne Sophie Crépin, Sverker Jagers, David Langlet, Simon Matti, David Turner, Monika Winder, Pierre de Wit, Leif G. Anderson

Research output: Contribution to journalArticlepeer-review

Abstract

Ocean temperatures are rising; species are shifting poleward, and pH is falling (ocean acidification, OA). We summarise current understanding of OA in the brackish Baltic-Skagerrak System, focussing on the direct, indirect and interactive effects of OA with other anthropogenic drivers on marine biogeochemistry, organisms and ecosystems. Substantial recent advances reveal a pattern of stronger responses (positive or negative) of species than ecosystems, more positive responses at lower trophic levels and strong indirect interactions in food-webs. Common emergent themes were as follows: OA drives planktonic systems toward the microbial loop, reducing energy transfer to zooplankton and fish; and nutrient/food availability ameliorates negative impacts of OA. We identify several key areas for further research, notably the need for OA-relevant biogeochemical and ecosystem models, and understanding the ecological and evolutionary capacity of Baltic-Skagerrak ecosystems to respond to OA and other anthropogenic drivers.

Original languageEnglish
Pages (from-to)831-854
Number of pages24
JournalAmbio: a Journal of the Human Environment
Volume48
Issue number8
Early online date2018 Dec 1
DOIs
Publication statusPublished - 2019

Subject classification (UKÄ)

  • Oceanography, Hydrology, Water Resources

Free keywords

  • Baltic
  • Ecosystem services
  • Eutrophication
  • Indirect effects
  • Ocean acidification
  • Warming

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