Articles | Volume 19, issue 1
Research article
25 Jan 2023
Research article |  | 25 Jan 2023

Unifying biological field observations to detect and compare ocean acidification impacts across marine species and ecosystems: what to monitor and why

Steve Widdicombe, Kirsten Isensee, Yuri Artioli, Juan Diego Gaitán-Espitia, Claudine Hauri, Janet A. Newton, Mark Wells, and Sam Dupont

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Ideas and perspectives: When ocean acidification experiments are not the same, repeatability is not tested
Phillip Williamson, Hans-Otto Pörtner, Steve Widdicombe, and Jean-Pierre Gattuso
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Cited articles

Andersson, P., Håkansson, B., Håkansson, J., Sahlsten, E., Havenhand, J., Thorndyke, M., and Dupont, S.: Marine acidification – On effects and monitoring of marine acidification in the seas surrounding Sweden, SMHI report, Oceanografi, 62 pp., 2008. 
Beardall, J. and Raven, J. A.: The potential effects of global climate change on microalgal photosynthesis, growth and ecology, Phycologia, 43, 26–40, 2004. 
Beardall, J., Stojkovic, S., and Larsen, S.: Living in a high CO2 world: impacts of global climate change on marine phytoplankton, Plant Ecol. Div., 2, 191–205, 2009. 
Bednaršek, N., Feely, R. A., Reum, J. P. C., Peterson, B., Menkel, J., Alin, S. R., and Hales, B.: Limacina helicina shell dissolution as an indicator of declining habitat suitability owing to ocean acidification in the California Current Ecosystem, P. Roy. Soc. B-Bio., 281, 20140123,, 2014. 
Short summary
Ocean acidification is a global perturbation of the ocean carbonate chemistry as a consequence of increased carbon dioxide concentration in the atmosphere. While great progress has been made over the last decade for chemical monitoring, ocean acidification biological monitoring remains anecdotal. This is a consequence of a lack of standards, general methodological framework, and overall methodology. This paper presents methodology focusing on sensitive traits and rates of change.