The vertical nitrogen flux caused by zooplankton diel vertical migration

Three species of vertically migrating copepods (Pleuromamma pisekii, P. gracilis and P. abdominalis) were collected at dawn and at dusk from the upper 200 m in the North Atlantic (36.5°N, 19.2°W) between 11 and 18 July 1996. For all 3 species, the nitrogen content of individuals caught at dawn was s...

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Bibliographic Details
Main Authors: Graeme Hays, RP Harris, RN Head
Format: Article in Journal/Newspaper
Language:unknown
Published: 1997
Subjects:
Ecology not elsewhere classified
Zoology not elsewhere classified
Oceanography not elsewhere classified
zooplankton
diel vertical migration
nitrogen
vertical export
biogeochemical impact
n-flux
Atlantic
PRIME
North Atlantic
Copepods
Online Access:http://hdl.handle.net/10536/DRO/DU:30100289
https://figshare.com/articles/journal_contribution/The_vertical_nitrogen_flux_caused_by_zooplankton_diel_vertical_migration/20846065
Description
Summary:Three species of vertically migrating copepods (Pleuromamma pisekii, P. gracilis and P. abdominalis) were collected at dawn and at dusk from the upper 200 m in the North Atlantic (36.5°N, 19.2°W) between 11 and 18 July 1996. For all 3 species, the nitrogen content of individuals caught at dawn was significantly greater than for individuals caught at dusk. Theoretical considerations suggest that this dawn-dusk difference in nitrogen content represents material that is exported from the surface each day (the so called active N-flux). The rate of this active N-flux was 0.46 μg N ind. -1 d -1 for P. pisekii, 0.34 μg N ind. -1 d -1 for P. gracilis and 5.17 μg N ind. -1 d -1 for P. abdominalis.

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