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Sedimentation follo...
Sedimentation following the spring bloom in Disko Bay, West Greenland, with special emphasis on the role of copepods
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Juul-Pedersen, T. (author)
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Nielsen, T. G. (author)
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Michel, C. (author)
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Moller, E. F. (author)
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- Tiselius, Peter, 1958 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marin ekologi,Department of Marine Ecology
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- Thor, Peter, 1965 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marin ekologi,Department of Marine Ecology
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Olesen, M. (author)
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- Selander, Erik, 1973 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marin ekologi,Department of Marine Ecology
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Gooding, S. (author)
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(creator_code:org_t)
- Inter-Research Science Center, 2006
- 2006
- English.
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In: Marine Ecology-Progress Series. - : Inter-Research Science Center. - 0171-8630 .- 1616-1599. ; 314, s. 239-255
- Related links:
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https://www.int-res....
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https://gup.ub.gu.se...
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https://doi.org/10.3...
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Abstract
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- The sedimentation of particulate organic material was investigated in Disko Bay, West Greenland, during June 2001. Post spring-bloom conditions were encountered, with seasonally decreasing phytoplankton biomass associated with the pycnocline. Calanus finmarchicus, C. glacialis, and C. hyperboreus dominated the zooplankton community, comprising up to 88% of the copepod biomass. Faecal pellet production by C. finmarchicus and C. glacialis was positively correlated to the available food (chlorophyll a > 10 mu m). Results from short-term sediment trap deployments (6 h) showed that particulate organic carbon (POC) sedimentation from the euphotic zone was, on average, 628 mg C m(-2) d(-1), with copepod faecal pellets contributing, on average, 29% of this amount. The faecal pellet contribution to the vertical sinking export of POC was equivalent to that of phytoplankton and amorphous detritus. Yet, on average, 35% of the copepod faecal pellet production was retained within the euphotic zone. The POC: PON (particulate organic nitrogen) ratio of the suspended material in the euphotic zone (8.1 +/- 0.4) was comparable to that of the material collected in the sediment traps just below the euphotic zone (8.0 +/- 0.9). In addition, the daily loss rates of POC and PON within each sampling depth were similar, and the carbon to nitrogen ratio in the sediment traps did not change with depth. These results indicate that the pelagic system had a low retention efficiency of nitrogen just after the spring bloom.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- arctic marine ecology
- sedimentation
- faecal pellet production
- Calanus
- spp.
- carbon flux
- NORTHEAST WATER POLYNYA
- MARGINAL ICE-ZONE
- PLANKTON COMMUNITY
- STRUCTURE
- ZOOPLANKTON FECAL PELLETS
- CENTRAL BARENTS SEA
- CALANUS-FINMARCHICUS
- VERTICAL FLUX
- SEASONAL-VARIATION
- BIOGENIC
- MATTER
- FEEDING HISTORY
Publication and Content Type
- ref (subject category)
- art (subject category)
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Juul-Pedersen, T ...
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Nielsen, T. G.
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Michel, C.
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Moller, E. F.
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Tiselius, Peter, ...
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Thor, Peter, 196 ...
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show more...
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Olesen, M.
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Selander, Erik, ...
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Gooding, S.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
- Articles in the publication
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Marine Ecology-P ...
- By the university
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University of Gothenburg