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Sinking flux of particulate organic matter in the oceans: Sensitivity to particle characteristics

Abstract.

"The sinking of organic particles produced in the upper sunlit layers of the ocean forms an important limb of the oceanic biological pump, which impacts the sequestration of carbon and resupply of nutrients in the mesopelagic ocean. Particles raining out from the upper ocean undergo remineralization by bacteria colonized on their surface and interior, leading to an attenuation in the sinking flux of organic matter with depth. [...]"

Source: Scientific Reports
Authors: Melissa M. Omand et al.
DOI: 10.1038/s41598-020-60424-5

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Understanding the remote influences of ocean weather on the episodic pulses of particulate organic carbon flux

Abstract.

"The biological carbon pump has been estimated to export ∼5–15 Gt C yr−1 into the deep ocean, and forms the principal deep-sea food resource. Irregular, intense pulses of particulate organic carbon (POC) have been found to make up about one-third of the overall POC fluxes at a long-term deep-sea research station influenced by coastal upwelling of the California Current, Station M (34°50′N, 123° W, 4000 m depth). However, the drivers of these pulses have been challenging to quantify. [...]"

Source: Deep Sea Research Part II: Topical Studies in Oceanography
Authors: Henry A. Ruhl et al.
DOI: 10.1016/j.dsr2.2020.104741

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