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Webinar: Climatic Controls on Metabolic Constraints in the Ocean

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Tuesday, 06 April 2021, 1:00

Tuesday, April 6, 2021. 1:00 PM Eastern. Webinar: Climatic Controls on Metabolic Constraints in the Ocean. Precious Mongwe, NCAR. Sponsored by CDG Seminar Series. More information here.

Dissolved oxygen is a fundamental requirement for heterotrophic marine organisms and respiratory demand for oxygen increases with increasing temperature. Observations and models indicate that the ocean is warming and losing oxygen, posing a compound threat to marine ecosystems. In this study, we leverage a compilation of physiological data quantifying the temperature sensitivity and oxygen requirements of metabolic rates for a range of marine species adapted to specific conditions (“ecotypes”). We use these data to evaluate the ocean’s “metabolic state,” the ability of environments to support aerobic metabolisms. Using the Community Earth System Model Large Ensemble, we investigate how natural climate variability and human-driven external forcing drive fluctuations in the extent of viable habitat for each ecotype on interannual to multi-decadal timescales.

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