Declining oxygen in the global ocean and coastal waters.

Breitburg, Denise, Levin, Lisa A., Oschlies, Andreas , Grégoire, Marilaure, Chavez, Francisco P., Conley, Daniel J., Garçon, Véronique, Gilbert, Denis, Gutiérrez, Dimitri, Isensee, Kirsten, Jacinto, Gil S., Limburg, Karin E., Montes, Ivonne, Naqvi, S. W. A., Pitcher, Grant C., Rabalais, Nancy N., Roman, Michael R., Rose, Kenneth A., Seibel, Brad A., Telszewski, Maciej, Yasuhara, Moriaki and Zhang, Jing (2018) Declining oxygen in the global ocean and coastal waters. Science, 359 (6371). eaam7240. DOI 10.1126/science.aam7240.

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Abstract

As plastic waste pollutes the oceans and fish stocks decline, unseen below the surface another problem grows: deoxygenation. Breitburg et al. review the evidence for the downward trajectory of oxygen levels in increasing areas of the open ocean and coastal waters. Rising nutrient loads coupled with climate change—each resulting from human activities—are changing ocean biogeochemistry and increasing oxygen consumption. This results in destabilization of sediments and fundamental shifts in the availability of key nutrients. In the short term, some compensatory effects may result in improvements in local fisheries, such as in cases where stocks are squeezed between the surface and elevated oxygen minimum zones. In the longer term, these conditions are unsustainable and may result in ecosystem collapses, which ultimately will cause societal and economic harm.

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
Scripps
OceanRep > SFB 754
OceanRep > SFB 754 > B1
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1126/science.aam7240
ISSN: 0036-8075
Projects: SFB754, COCOA
Date Deposited: 18 Jan 2018 08:25
Last Modified: 01 Feb 2019 15:07
URI: http://oceanrep.geomar.de/id/eprint/41604

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