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Biological oceanogr...
Biological oceanography across the Southern Indian Ocean - basin scale trends in the zooplankton community
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Jonasdottir, Sigrun Huld (author)
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Nielsen, Torkel Gissel (author)
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- Borg, Christian Marc Andersen (author)
- Stockholms universitet,Institutionen för systemekologi
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Moller, Eva Friis (author)
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Jakobsen, Hans Henrik (author)
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Satapoomin, Suree (author)
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(creator_code:org_t)
- Elsevier BV, 2013
- 2013
- English.
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In: Deep Sea Research Part I. - : Elsevier BV. - 0967-0637 .- 1879-0119. ; 75, s. 16-27
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We present a study on the protozooplankton > 5 mu m and copepods larger than 50 mu m at a series of contrasting stations across the Southern Indian Ocean (SIO). Numerically, over 80% of the copepod community across the transect was less than 650 mu m in size, dominated by nauplii, and smaller copepods, while 80% of the biomass (as mg C m(-3)) was larger than 1300 mu m in body length. Predation by the carnivorous copepod Corycaeus sp. was estimated to be able to remove up to 2% d(-1) of the copepods < 1000 mu m in size. By the help of grazing models we estimated that primary producers were mainly grazed upon by ciliates and heterotrophic dinoflagellates (40-80% d(-1) combined) in temperate waters but appendicularians became increasingly important in the tropical waters grazing about 40% of the biomass per day. Despite their high abundance and biomass, copepods contributed less than 20% of the grazing at most stations. Secondary production was low (carbon specific egg production < 0.14 d(-1)) but typical for food limited oligotrophic oceans.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
Keyword
- Mesozooplankton
- Heterotrophic protists
- Egg production
- Grazing
- Indian Ocean
- Galathea 3
Publication and Content Type
- ref (subject category)
- art (subject category)
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