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Copepod carcasses in the subtropical convergence zone of the Sargasso Sea: implications for microbial community composition, system respiration and carbon flux

Kam Tang Orcid Logo, Liv Backhaus, Lasse Riemann, Marja Koski, Hans-Peter Grossart, Peter Munk, Torkel Gissel Nielsen

Journal of Plankton Research, Volume: 41, Issue: 4, Pages: 549 - 560

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1093/plankt/fbz038

Abstract

We showed that copepod carcasses were prevalent in the dynamic subtropical convergence zone where the water column stratification pattern can change considerably across the front as warm and cold water masses converge. The proportional numerical abundances of copepod carcasses increased with depth, r...

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Published in: Journal of Plankton Research
ISSN: 0142-7873 1464-3774
Published: Oxford University Press (OUP) 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa51296
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Abstract: We showed that copepod carcasses were prevalent in the dynamic subtropical convergence zone where the water column stratification pattern can change considerably across the front as warm and cold water masses converge. The proportional numerical abundances of copepod carcasses increased with depth, reaching up to 91% at 300–400 m. On average 14–19% of the copepods in the upper 200 m were carcasses. Combining field and experimental data, we estimated that decomposing copepod carcasses were a negligible oxygen sink in the STCZ, but sinking carcasses represent an overlooked source of the passive carbon sinking flux in the area.
Issue: 4
Start Page: 549
End Page: 560