Effect of Climate Change on Marine Ecosystems

Phillip Williamson, Valeria A. Guinder

Research output: Chapter in Book/Report/Conference proceedingChapter

13 Citations (Scopus)


The impacts of anthropogenic climate change are already discernible throughout the ocean, from the equator to the poles, and from the surface to abyssal depths. Further climate change impacts are inevitable; however, their damage to marine organisms and ecosystems, and the services they provide, can be greatly reduced if greenhouse gas emissions are rapidly reduced. This review covers six main climate-related drivers (warming, acidification, deoxygenation, sea level rise and storm events, sea ice loss, stratification, and nutrient supply) and their impacts on 13 marine ecosystems, broadly defined. Seven of these are near-shore (coral reefs, kelp ecosystems, seagrass meadows, rocky and sandy intertidal, saltmarshes, estuaries, and mangroves) and six are in shelf seas and the open ocean (shelf sea benthos, upper ocean plankton, fish and fisheries, cold water corals, ice-influenced ecosystems, and the deep seafloor). Three cross-cutting issues are emphasized: that climate change impacts are not single factors, but interact together and with other human pressures in a multistressor context; that there are fast and slow climate processes in the ocean, with overall temporal uncertainties relating to future societal behavior; and that there can be high spatial heterogeneity in marine ecosystem impacts and vulnerabilities.
Original languageEnglish
Title of host publicationThe Impacts of Climate Change
Subtitle of host publicationA Comprehensive Study of Physical, Biophysical, Social, and Political Issues
EditorsTrevor Letcher
Place of PublicationAmsterdam
Number of pages62
ISBN (Electronic)9780128223734
ISBN (Print)9780128223734
Publication statusPublished - 9 May 2021


  • Acidification
  • Climate change impacts
  • Deep sea
  • Deoxygenation
  • Fish and fisheries
  • Ocean ecosystems
  • Ocean warming
  • Open ocean
  • Shallow coastal
  • Shelf seas

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