Variable coastal hypoxia exposure and drivers across the southern California Current

Variable coastal hypoxia exposure and drivers across the southern California Current

Declining oxygen is one of the most drastic changes in the ocean, and this trend is expected to worsen under future climate change scenarios. Spatial variability in dissolved oxygen dynamics and hypoxia exposures can drive differences in vulnerabilities of coastal ecosystems and resources, but docum...

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Bibliographic Details
Published in:Scientific reports Vol. 11; no. 1; pp. 10929 - 10
Main Authors: Low, Natalie H. N., Micheli, Fiorenza, Aguilar, Juan Domingo, Arce, Daniel Romero, Boch, Charles A., Bonilla, Juan Carlos, Bracamontes, Miguel Ángel, De Leo, Giulio, Diaz, Eduardo, Enríquez, Eduardo, Hernandez, Arturo, Martinez, Ramón, Mendoza, Ramon, Miranda, Claudia, Monismith, Stephen, Ramade, Mario, Rogers-Bennett, Laura, Romero, Alfonso, Salinas, Carmina, Smith, Alexandra E., Torre, Jorge, Villavicencio, Gustavo, Woodson, C. Brock
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 25-05-2021
Nature Publishing Group
Nature Portfolio
Subjects:
704/158/2165
704/158/2455
704/829
Adaptive management
Climate change
Coastal ecosystems
Coastal fisheries
Collaboration
Dissolved oxygen
Environmental monitoring
Forest ecosystems
Humanities and Social Sciences
Hypoxia
Marine ecosystems
multidisciplinary
Oxygen
Science
Science (multidisciplinary)
Seawater
Terrestrial ecosystems
Upwelling
Water temperature
United States > US
California
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Summary:Declining oxygen is one of the most drastic changes in the ocean, and this trend is expected to worsen under future climate change scenarios. Spatial variability in dissolved oxygen dynamics and hypoxia exposures can drive differences in vulnerabilities of coastal ecosystems and resources, but documentation of variability at regional scales is rare in open-coast systems. Using a regional collaborative network of dissolved oxygen and temperature sensors maintained by scientists and fishing cooperatives from California, USA, and Baja California, Mexico, we characterize spatial and temporal variability in dissolved oxygen and seawater temperature dynamics in kelp forest ecosystems across 13° of latitude in the productive California Current upwelling system. We find distinct latitudinal patterns of hypoxia exposure and evidence for upwelling and respiration as regional drivers of oxygen dynamics, as well as more localized effects. This regional and small-scale spatial variability in dissolved oxygen dynamics supports the use of adaptive management at local scales, and highlights the value of collaborative, large-scale coastal monitoring networks for informing effective adaptation strategies for coastal communities and fisheries in a changing climate.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-89928-4