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      Assessing oxygen depletion in the Northeastern Pacific Ocean during the last deglaciation using I/Ca ratios from multiple benthic foraminiferal species : Benthic foraminiferal I/Ca ratios

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      Paleoceanography
      Wiley

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          Expanding oxygen-minimum zones in the tropical oceans.

          Oxygen-poor waters occupy large volumes of the intermediate-depth eastern tropical oceans. Oxygen-poor conditions have far-reaching impacts on ecosystems because important mobile macroorganisms avoid or cannot survive in hypoxic zones. Climate models predict declines in oceanic dissolved oxygen produced by global warming. We constructed 50-year time series of dissolved-oxygen concentration for select tropical oceanic regions by augmenting a historical database with recent measurements. These time series reveal vertical expansion of the intermediate-depth low-oxygen zones in the eastern tropical Atlantic and the equatorial Pacific during the past 50 years. The oxygen decrease in the 300- to 700-m layer is 0.09 to 0.34 micromoles per kilogram per year. Reduced oxygen levels may have dramatic consequences for ecosystems and coastal economies.
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            Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition

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              A conceptual model explaining benthic foraminiferal microhabitats

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                Author and article information

                Journal
                Paleoceanography
                Paleoceanography
                Wiley
                08838305
                August 2017
                August 03 2017
                : 32
                : 8
                : 746-762
                Article
                10.1002/2016PA003062
                5d43088a-7881-4b69-bef2-6af7e7a26de7
                © 2017

                http://doi.wiley.com/10.1002/tdm_license_1.1

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