Particle export fluxes to the oxygen minimum zone of the eastern tropical North Atlantic
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| Autori principali: | , , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2017
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| _version_ | 1867167675280523264 |
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| author | Engel, Anja Wagner, Hannes Le Moigne, Frédéric A C Wilson, Samuel T |
| author_facet | Engel, Anja Wagner, Hannes Le Moigne, Frédéric A C Wilson, Samuel T |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | In the ocean, sinking of particulate organic mat- ter (POM) drives carbon export from the euphotic zone and supplies nutrition to mesopelagic communities, the feeding and degradation activities of which in turn lead to export flux attenuation. Oxygen (O2) minimum zones (OMZs) with suboxic water layers (< 5 µmol O2 kg-1 ) show a lower carbon flux attenuation compared to well- oxygenated waters (> 100 µmol O2 kg-1), supposedly due to reduced heterotrophic activity. This study focuses on sinking particle fluxes through hypoxic mesopelagic waters (< 60 µmol O2 kg-1); these represent about 100 times more ocean volume globally compared to suboxic waters, but they have less been studied. Particle export fluxes and attenuation coefficients were determined in the eastern tropical North Atlantic (ETNA) using two surface-tethered drifting sediment trap arrays with seven trapping depths located between 100 and 600 m. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_874268 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Particle export fluxes to the oxygen minimum zone of the eastern tropical North Atlantic Engel, Anja Wagner, Hannes Le Moigne, Frédéric A C Wilson, Samuel T Climate - Biogeochemistry Interactions in the Tropical Ocean; SFB754 In the ocean, sinking of particulate organic mat- ter (POM) drives carbon export from the euphotic zone and supplies nutrition to mesopelagic communities, the feeding and degradation activities of which in turn lead to export flux attenuation. Oxygen (O2) minimum zones (OMZs) with suboxic water layers (< 5 µmol O2 kg-1 ) show a lower carbon flux attenuation compared to well- oxygenated waters (> 100 µmol O2 kg-1), supposedly due to reduced heterotrophic activity. This study focuses on sinking particle fluxes through hypoxic mesopelagic waters (< 60 µmol O2 kg-1); these represent about 100 times more ocean volume globally compared to suboxic waters, but they have less been studied. Particle export fluxes and attenuation coefficients were determined in the eastern tropical North Atlantic (ETNA) using two surface-tethered drifting sediment trap arrays with seven trapping depths located between 100 and 600 m. |
| title | Particle export fluxes to the oxygen minimum zone of the eastern tropical North Atlantic |
| topic | Climate - Biogeochemistry Interactions in the Tropical Ocean; SFB754 |
| url | https://doi.org/10.1594/PANGAEA.874268 |