The effects of elevated temperature and dissolved ?CO2 on a marine foundation species

ECU Author/Contributor (non-ECU co-authors, if there are any, appear on document)

Michael W. McCoy (Creator)

Brian R. Silliman (Creator)

Cori J. Speights (Creator)

Institution

East Carolina University (ECU )

Web Site: http://www.ecu.edu/lib/

Abstract: Understanding how climate change and other environmental stressors will affect species is a fundamental concern of modern ecology. Indeed, numerous studies have documented how climate stressors affect species distributions and population persistence. However, relatively few studies have investigated how multiple climate stressors might affect species. In this study, we investigate the impacts of how two climate change factors affect an important foundation species. Specifically, we tested how ocean acidification from dissolution of CO2 and increased sea surface temperatures affect multiple characteristics of juvenile eastern oysters (Crassostrea virginica). We found strong impacts of each stressor, but no interaction between the two. Simulated warming to mimic heat stressed summers reduced oyster growth, survival, and filtration rates. Additionally, we found that CO2-induced acidification reduced strength of oyster shells, which could potentially facilitate crab predation. As past studies have detected few impacts of these stressors on adult oysters, these results indicate that early life stages of calcareous marine organisms may be more susceptible to effects of ocean acidification and global warming. Overall, these data show that predicted changes in temperature and CO2 can differentially influence direct effects on individual species, which could have important implications for the nature of their trophic interactions.

Additional Information

Publication

Other

Speights CJ, Silliman BR, McCoy MW. The effects of elevated temperature and dissolved ?CO2 on a marine foundation species. Ecol Evol. 2017\;00:1–7. https://doi.org/10.1002/ece3.2969

Language: English

Date: 2023

Subjects

Acidification;Climate change;Multiple stressors;Oyster;Warming

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