The ocean is losing oxygen, with effects across food webs. Dr. Sven Pallacks explains ocean deoxygenation, how oxygen enters and moves through seawater, and why oxygen minimum zones develop. The episode connects warming, circulation, dead zones, and marine life, then uses fish ear stones called otoliths to examine past declines in mesopelagic fish. A clear introduction to an invisible change reshaping ocean ecosystems..
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Special thanks to the Monterey Bay Aquarium for sponsoring this episode.
Episode Guests: Dr. Sven Pallacks
Find Dr. Pallacks’ publications on Google Scholar
Read Dr. Pallacks’ article, Ocean deoxygenation linked to ancient mesopelagic fish decline.
Visit the Smithsonian Tropical Research Institute website
Visit the O'DEA Lab here
Episode Transcript and more information on the Pine Forest Media website
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Hosted, produced, and edited by Clark Marchese
Cover art by Jomiro Eming
Theme music by Nela Ruiz
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