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Seaweed Responses to Ocean Acidification

  • Michael Y. Roleda
  • Catriona L. Hurd
Part of the Ecological Studies book series (ECOLSTUD, volume 219)

Abstract

Ocean acidification (OA) is the decline in seawater pH caused by the sustained absorption by the oceans of anthropogenically produced atmospheric CO2. The consequences of OA to seaweed-based coastal ecosystems range from organismal to community levels of biological organization. Organismal responses can be species specific, depending on their carbon physiology, mode of calcification, and morphology (functional form). At the community scale, changes in community structure and function can have severe consequences on trophic dynamics. Biologically driven fluctuations in seawater carbonate chemistry are observed from micro- (diffusion boundary layer, DBL) to mesoscales (e.g., within a kelp forest), and such fluctuations may be exacerbated by OA. The synergistic effects of elevated CO2 with other human-induced environmental stressors (e.g., warming, eutrophication, and UVR) could make the primary producers of coastal ecosystems vulnerable to global climate change; some species may perform better than others under “greenhouse” conditions, leading to community phase shifts.

Keywords

Ocean Acidification Crassulacean Acid Metabolism Crustose Coralline Alga Diffusion Boundary Layer Organic Carbon Assimilation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors were funded by the Royal Society of New Zealand Marsden Fund (UOO0914). We thank the two anonymous reviewers for their helpful comments.

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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of BotanyUniversity of OtagoDunedinNew Zealand

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