Metazooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans
The abundance and depth distribution of metazoans >20 μm were investigated at seven stations across the Southern Indian Ocean (SIO), October–November 2006. Copepod nauplii, copepodites and larvaceans dominated the metazooplankton community. Copepodites were most abundant within Agulhas Current an...
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fthighwire:oai:open-archive.highwire.org:plankt:31/5/525 2023-05-15T18:25:31+02:00 Metazooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans Jaspers, Cornelia Nielsen, Torkel Gissel Carstensen, Jacob Hopcroft, Russell R. Møller, Eva Friis 2009-05-01 00:00:00.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/31/5/525 https://doi.org/10.1093/plankt/fbp002 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/31/5/525 http://dx.doi.org/10.1093/plankt/fbp002 Copyright (C) 2009, Oxford University Press ORIGINAL ARTICLES TEXT 2009 fthighwire https://doi.org/10.1093/plankt/fbp002 2013-05-27T04:54:37Z The abundance and depth distribution of metazoans >20 μm were investigated at seven stations across the Southern Indian Ocean (SIO), October–November 2006. Copepod nauplii, copepodites and larvaceans dominated the metazooplankton community. Copepodites were most abundant within Agulhas Current and Southern Ocean waters, decreasing toward subtropical/tropical areas, whereas larvaceans showed the inverse pattern. The fraction <200 μm contained the majority of the zooplankton enumerated, including 81, 23 and 93% of the larvacean, copepodite and nauplii abundances, respectively. The relative abundance of larvaceans compared with copepodites increased from 7 to 44% from South Africa towards Australia. Peak copepodite biomass was observed off South Africa, while larvacean biomass was <1% of the copepodite biomass there, increasing to 6% in tropical waters. Both copepodite and nauplii biomass were positively correlated to total Chl a (P < 0.0001), larvacean biomass was only significantly related to temperature (P = 0.0213). Despite their low biomass, larvacean production was estimated to exceed the copepod production up to five times. It appears that the abundance and role of larvaceans in the SIO has been severely underestimated in previous studies; thus future investigations into the fate of organic matter will remain incomplete if this group is not adequately considered. Text Southern Ocean HighWire Press (Stanford University) Southern Ocean Indian Journal of Plankton Research 31 5 525 540 |
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Open Polar |
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HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
ORIGINAL ARTICLES |
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ORIGINAL ARTICLES Jaspers, Cornelia Nielsen, Torkel Gissel Carstensen, Jacob Hopcroft, Russell R. Møller, Eva Friis Metazooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans |
topic_facet |
ORIGINAL ARTICLES |
description |
The abundance and depth distribution of metazoans >20 μm were investigated at seven stations across the Southern Indian Ocean (SIO), October–November 2006. Copepod nauplii, copepodites and larvaceans dominated the metazooplankton community. Copepodites were most abundant within Agulhas Current and Southern Ocean waters, decreasing toward subtropical/tropical areas, whereas larvaceans showed the inverse pattern. The fraction <200 μm contained the majority of the zooplankton enumerated, including 81, 23 and 93% of the larvacean, copepodite and nauplii abundances, respectively. The relative abundance of larvaceans compared with copepodites increased from 7 to 44% from South Africa towards Australia. Peak copepodite biomass was observed off South Africa, while larvacean biomass was <1% of the copepodite biomass there, increasing to 6% in tropical waters. Both copepodite and nauplii biomass were positively correlated to total Chl a (P < 0.0001), larvacean biomass was only significantly related to temperature (P = 0.0213). Despite their low biomass, larvacean production was estimated to exceed the copepod production up to five times. It appears that the abundance and role of larvaceans in the SIO has been severely underestimated in previous studies; thus future investigations into the fate of organic matter will remain incomplete if this group is not adequately considered. |
format |
Text |
author |
Jaspers, Cornelia Nielsen, Torkel Gissel Carstensen, Jacob Hopcroft, Russell R. Møller, Eva Friis |
author_facet |
Jaspers, Cornelia Nielsen, Torkel Gissel Carstensen, Jacob Hopcroft, Russell R. Møller, Eva Friis |
author_sort |
Jaspers, Cornelia |
title |
Metazooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans |
title_short |
Metazooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans |
title_full |
Metazooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans |
title_fullStr |
Metazooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans |
title_full_unstemmed |
Metazooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans |
title_sort |
metazooplankton distribution across the southern indian ocean with emphasis on the role of larvaceans |
publisher |
Oxford University Press |
publishDate |
2009 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/31/5/525 https://doi.org/10.1093/plankt/fbp002 |
geographic |
Southern Ocean Indian |
geographic_facet |
Southern Ocean Indian |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/31/5/525 http://dx.doi.org/10.1093/plankt/fbp002 |
op_rights |
Copyright (C) 2009, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/fbp002 |
container_title |
Journal of Plankton Research |
container_volume |
31 |
container_issue |
5 |
container_start_page |
525 |
op_container_end_page |
540 |
_version_ |
1766207036722249728 |