Ecosystem structure in the Iceland Sea and recent changes to the capelin (Mallotus villosus) population
<qd> Pálsson, Ó. K., Gislason, A., Guðfinnsson, H. G., Gunnarsson, B., Ólafsdóttir, S. R., Petursdottir, H., Sveinbjörnsson, S., Thorisson, K., and Valdimarsson, H. Ecosystem structure in the Iceland Sea and recent changes to the capelin ( Mallotus villosus ) population. – ICES Journal of Mari...
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Oxford University Press
2012
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Online Access: | http://icesjms.oxfordjournals.org/cgi/content/short/fss071v1 https://doi.org/10.1093/icesjms/fss071 |
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fthighwire:oai:open-archive.highwire.org:icesjms:fss071v1 2023-05-15T16:46:44+02:00 Ecosystem structure in the Iceland Sea and recent changes to the capelin (Mallotus villosus) population Pálsson, Ólafur K. Gislason, Astthor Guðfinnsson, Hafsteinn G. Gunnarsson, Björn Ólafsdóttir, Sólveig R. Petursdottir, Hildur Sveinbjörnsson, Sveinn Thorisson, Konrad Valdimarsson, Héðinn 2012-05-18 04:37:25.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/fss071v1 https://doi.org/10.1093/icesjms/fss071 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/fss071v1 http://dx.doi.org/10.1093/icesjms/fss071 Copyright (C) 2012, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer ESSAS - Climate Effects on Polar/Subpolar Ecosystems TEXT 2012 fthighwire https://doi.org/10.1093/icesjms/fss071 2013-05-26T22:47:31Z <qd> Pálsson, Ó. K., Gislason, A., Guðfinnsson, H. G., Gunnarsson, B., Ólafsdóttir, S. R., Petursdottir, H., Sveinbjörnsson, S., Thorisson, K., and Valdimarsson, H. Ecosystem structure in the Iceland Sea and recent changes to the capelin ( Mallotus villosus ) population. – ICES Journal of Marine Science, doi:10.1093/icesjms/fss071. </qd>The objective of the Iceland Sea Ecosystem Project was to analyse principal ecosystem patterns, including the life history of capelin. Ten surveys were conducted for this purpose between 2006 and 2008, and hydrographic data from 1970 to 2011 were analysed. Long-term temporal patterns indicate an increase in the temperature of surface and intermediate waters during recent years in the Iceland Sea. The phytoplankton consisted mainly of diatoms in spring, with flagellates and dinoflagellates appearing later in the year. Zooplankton and fish were dominated by a few species. In late summer, the pelagic foodweb ranged between trophic levels 2.4 and 3.6. Trends in nutrients and primary production showed a clear seasonal pattern with a spring bloom in late May, followed by a peak in secondary production in July/August. The spatial structure of the lower ecosystem levels in summer was stable across the 3 years, determined mainly by the structure of the water masses. The pelagic fish fauna consisted primarily of adult pelagic fish and transient numbers of larval species. The spatial pattern of capelin indicated northward displacement of 0-group capelin and westward displacement of older capelin in recent years. The annual biomass was estimated at 3.8 million tonnes of phytoplankton, ∼21 million tonnes of zooplankton, and 1.0 million tonnes of fish. Text Iceland HighWire Press (Stanford University) Pálsson ENVELOPE(-65.509,-65.509,-67.332,-67.332) ICES Journal of Marine Science 69 7 1242 1254 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
ESSAS - Climate Effects on Polar/Subpolar Ecosystems |
spellingShingle |
ESSAS - Climate Effects on Polar/Subpolar Ecosystems Pálsson, Ólafur K. Gislason, Astthor Guðfinnsson, Hafsteinn G. Gunnarsson, Björn Ólafsdóttir, Sólveig R. Petursdottir, Hildur Sveinbjörnsson, Sveinn Thorisson, Konrad Valdimarsson, Héðinn Ecosystem structure in the Iceland Sea and recent changes to the capelin (Mallotus villosus) population |
topic_facet |
ESSAS - Climate Effects on Polar/Subpolar Ecosystems |
description |
<qd> Pálsson, Ó. K., Gislason, A., Guðfinnsson, H. G., Gunnarsson, B., Ólafsdóttir, S. R., Petursdottir, H., Sveinbjörnsson, S., Thorisson, K., and Valdimarsson, H. Ecosystem structure in the Iceland Sea and recent changes to the capelin ( Mallotus villosus ) population. – ICES Journal of Marine Science, doi:10.1093/icesjms/fss071. </qd>The objective of the Iceland Sea Ecosystem Project was to analyse principal ecosystem patterns, including the life history of capelin. Ten surveys were conducted for this purpose between 2006 and 2008, and hydrographic data from 1970 to 2011 were analysed. Long-term temporal patterns indicate an increase in the temperature of surface and intermediate waters during recent years in the Iceland Sea. The phytoplankton consisted mainly of diatoms in spring, with flagellates and dinoflagellates appearing later in the year. Zooplankton and fish were dominated by a few species. In late summer, the pelagic foodweb ranged between trophic levels 2.4 and 3.6. Trends in nutrients and primary production showed a clear seasonal pattern with a spring bloom in late May, followed by a peak in secondary production in July/August. The spatial structure of the lower ecosystem levels in summer was stable across the 3 years, determined mainly by the structure of the water masses. The pelagic fish fauna consisted primarily of adult pelagic fish and transient numbers of larval species. The spatial pattern of capelin indicated northward displacement of 0-group capelin and westward displacement of older capelin in recent years. The annual biomass was estimated at 3.8 million tonnes of phytoplankton, ∼21 million tonnes of zooplankton, and 1.0 million tonnes of fish. |
format |
Text |
author |
Pálsson, Ólafur K. Gislason, Astthor Guðfinnsson, Hafsteinn G. Gunnarsson, Björn Ólafsdóttir, Sólveig R. Petursdottir, Hildur Sveinbjörnsson, Sveinn Thorisson, Konrad Valdimarsson, Héðinn |
author_facet |
Pálsson, Ólafur K. Gislason, Astthor Guðfinnsson, Hafsteinn G. Gunnarsson, Björn Ólafsdóttir, Sólveig R. Petursdottir, Hildur Sveinbjörnsson, Sveinn Thorisson, Konrad Valdimarsson, Héðinn |
author_sort |
Pálsson, Ólafur K. |
title |
Ecosystem structure in the Iceland Sea and recent changes to the capelin (Mallotus villosus) population |
title_short |
Ecosystem structure in the Iceland Sea and recent changes to the capelin (Mallotus villosus) population |
title_full |
Ecosystem structure in the Iceland Sea and recent changes to the capelin (Mallotus villosus) population |
title_fullStr |
Ecosystem structure in the Iceland Sea and recent changes to the capelin (Mallotus villosus) population |
title_full_unstemmed |
Ecosystem structure in the Iceland Sea and recent changes to the capelin (Mallotus villosus) population |
title_sort |
ecosystem structure in the iceland sea and recent changes to the capelin (mallotus villosus) population |
publisher |
Oxford University Press |
publishDate |
2012 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/fss071v1 https://doi.org/10.1093/icesjms/fss071 |
long_lat |
ENVELOPE(-65.509,-65.509,-67.332,-67.332) |
geographic |
Pálsson |
geographic_facet |
Pálsson |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/fss071v1 http://dx.doi.org/10.1093/icesjms/fss071 |
op_rights |
Copyright (C) 2012, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fss071 |
container_title |
ICES Journal of Marine Science |
container_volume |
69 |
container_issue |
7 |
container_start_page |
1242 |
op_container_end_page |
1254 |
_version_ |
1766036830105370624 |