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Marine Biology Commons

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Earth Sciences

Natural Sciences and Mathematics | Student Professional Publications

2020

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Full-Text Articles in Marine Biology

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, Kastherine R. Reyes, Jonas T. Donnenfield Jan 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, Kastherine R. Reyes, Jonas T. Donnenfield

Natural Sciences and Mathematics | Student Professional Publications

Microfossil assemblages provide valuable records to investigate variability in continental margin biogeochemical cycles, including dynamics of the oxygen minimum zone (OMZ). Analyses of modern assemblages across environmental gradients are necessary to understand relationships between assemblage characteristics and environmental factors. Five cores were analyzed from the San Diego margin (32∘42′00′′ N, 117∘30′00′′ W; 300–1175 m water depth) for core top benthic foraminiferal assemblages to understand relationships between community assemblages and spatial hydrographic gradients as well as for down-core benthic foraminiferal assemblages to identify changes in the OMZ through time. Comparisons of benthic foraminiferal assemblages from two size fractions (63–150 and >150 …