Southern California margin benthic foraminiferal assemblages record recent centennial-scale changes in oxygen minimum zone

Palmer, Hannah M.; Hill, Tessa M.; Roopnarine, Peter D.; Myhre, Sarah E.; Reyes, Katherine R.; Donnenfield, Jonas T.

doi:https://doi.org/10.5194/bg-17-2923-2020

Articles | Volume 17, issue 11

https://doi.org/10.5194/bg-17-2923-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Ocean deoxygenation: drivers and consequences – past, present...

https://doi.org/10.5194/bg-17-2923-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 11

Research article

|

03 Jun 2020

Research article |

| 03 Jun 2020

Southern California margin benthic foraminiferal assemblages record recent centennial-scale changes in oxygen minimum zone

Hannah M. Palmer, Tessa M. Hill, Peter D. Roopnarine, Sarah E. Myhre, Katherine R. Reyes, and Jonas T. Donnenfield

Supplement

https://doi.org/10.5194/bg-17-2923-2020-supplement

Data sets

San Diego Margin Benthic Foraminiferal Assemblages from Late Holocene H. M. Palmer, T. M. Hill, S. E. Myhre, P. R. Roopnarine, K. R. Reyes, and J. T. Donnenfield https://www.ncdc.noaa.gov/paleo-search/study/28290

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Short summary

Modern climate change is causing expansions of low-oxygen zones, with detrimental impacts to marine life. To better predict future ocean oxygen change, we study past expansions and contractions of low-oxygen zones using microfossils of seafloor organisms. We find that, along the San Diego margin, the low-oxygen zone expanded into more shallow water in the last 400 years, but the conditions within and below the low-oxygen zone did not change significantly in the last 1500 years.