Distribution of overwintering Calanus in the North Norwegian Sea
International audience During winter 2003 and 2004, zooplankton and hydrographic data were collected in the northern parts of the Norwegian Sea (68?72° N, 8?17° E) west of the Norwegian shelf break at depths down to 1800 m. The results cover both inter and intra annual changes of hydrography and dis...
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ftccsdartic:oai:HAL:hal-00298371v1 2023-11-12T04:15:30+01:00 Distribution of overwintering Calanus in the North Norwegian Sea Edvardsen, A. Pedersen, J. M. Slagstad, D. Semenova, T. Timonin, A. Department of Aquatic BioSciences Norwegian College of Fishery Science SINTEF Ocean Space (SINTEF OCEAN) Stiftelsen for INdustriell og TEknisk Forskning Digital Trondheim (SINTEF Digital) P. P. Shirsov Institute of Oceanology Russian Academy of Sciences Moscow (RAS) 2006-03-31 https://hal.science/hal-00298371 https://hal.science/hal-00298371/document https://hal.science/hal-00298371/file/osd-3-25-2006.pdf en eng HAL CCSD European Geosciences Union hal-00298371 https://hal.science/hal-00298371 https://hal.science/hal-00298371/document https://hal.science/hal-00298371/file/osd-3-25-2006.pdf info:eu-repo/semantics/OpenAccess ISSN: 1812-0806 EISSN: 1812-0822 Ocean Science Discussions https://hal.science/hal-00298371 Ocean Science Discussions, 2006, 3 (2), pp.25-53 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2006 ftccsdartic 2023-10-21T23:15:12Z International audience During winter 2003 and 2004, zooplankton and hydrographic data were collected in the northern parts of the Norwegian Sea (68?72° N, 8?17° E) west of the Norwegian shelf break at depths down to 1800 m. The results cover both inter and intra annual changes of hydrography and distribution of Calanus spp. For the whole survey area, average seawater temperature down to 1000 m was higher in 2004 than in the same period in 2003. For the upper 500 m the difference was ca. 1°C. Calanus finmarchicus dominated at ca. 75% of the total copepod abundance. Typical abundance of C. finmarchicus in the survey area was 30 000?40 000 m ?2 . C. hyperboreus was found deeper than C. finmarchicus while other copepods were found at the depth of C. finmarchicus or shallower. From January to February 2004, the peak of abundance of C. finmarchicus and C. hyperboreus shifted ca. 300 m upwards indicating that ascent from overwintering depth took place at a speed of 10 m d ?1 during this period. In general, high abundance of copepods was found adjacent to the shelf slope while oceanic areas had low and intermediate abundance. In the southern part of the survey area, location of high and low copepod abundance shifted both between and within years. In the northern part of the survey area where the shelf slope is less steep, copepods was present at intermediate and high abundance during all surveys. Article in Journal/Newspaper Calanus finmarchicus Norwegian Sea Copepods Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Norwegian Sea |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Edvardsen, A. Pedersen, J. M. Slagstad, D. Semenova, T. Timonin, A. Distribution of overwintering Calanus in the North Norwegian Sea |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience During winter 2003 and 2004, zooplankton and hydrographic data were collected in the northern parts of the Norwegian Sea (68?72° N, 8?17° E) west of the Norwegian shelf break at depths down to 1800 m. The results cover both inter and intra annual changes of hydrography and distribution of Calanus spp. For the whole survey area, average seawater temperature down to 1000 m was higher in 2004 than in the same period in 2003. For the upper 500 m the difference was ca. 1°C. Calanus finmarchicus dominated at ca. 75% of the total copepod abundance. Typical abundance of C. finmarchicus in the survey area was 30 000?40 000 m ?2 . C. hyperboreus was found deeper than C. finmarchicus while other copepods were found at the depth of C. finmarchicus or shallower. From January to February 2004, the peak of abundance of C. finmarchicus and C. hyperboreus shifted ca. 300 m upwards indicating that ascent from overwintering depth took place at a speed of 10 m d ?1 during this period. In general, high abundance of copepods was found adjacent to the shelf slope while oceanic areas had low and intermediate abundance. In the southern part of the survey area, location of high and low copepod abundance shifted both between and within years. In the northern part of the survey area where the shelf slope is less steep, copepods was present at intermediate and high abundance during all surveys. |
author2 |
Department of Aquatic BioSciences Norwegian College of Fishery Science SINTEF Ocean Space (SINTEF OCEAN) Stiftelsen for INdustriell og TEknisk Forskning Digital Trondheim (SINTEF Digital) P. P. Shirsov Institute of Oceanology Russian Academy of Sciences Moscow (RAS) |
format |
Article in Journal/Newspaper |
author |
Edvardsen, A. Pedersen, J. M. Slagstad, D. Semenova, T. Timonin, A. |
author_facet |
Edvardsen, A. Pedersen, J. M. Slagstad, D. Semenova, T. Timonin, A. |
author_sort |
Edvardsen, A. |
title |
Distribution of overwintering Calanus in the North Norwegian Sea |
title_short |
Distribution of overwintering Calanus in the North Norwegian Sea |
title_full |
Distribution of overwintering Calanus in the North Norwegian Sea |
title_fullStr |
Distribution of overwintering Calanus in the North Norwegian Sea |
title_full_unstemmed |
Distribution of overwintering Calanus in the North Norwegian Sea |
title_sort |
distribution of overwintering calanus in the north norwegian sea |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00298371 https://hal.science/hal-00298371/document https://hal.science/hal-00298371/file/osd-3-25-2006.pdf |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Calanus finmarchicus Norwegian Sea Copepods |
genre_facet |
Calanus finmarchicus Norwegian Sea Copepods |
op_source |
ISSN: 1812-0806 EISSN: 1812-0822 Ocean Science Discussions https://hal.science/hal-00298371 Ocean Science Discussions, 2006, 3 (2), pp.25-53 |
op_relation |
hal-00298371 https://hal.science/hal-00298371 https://hal.science/hal-00298371/document https://hal.science/hal-00298371/file/osd-3-25-2006.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782332790830792704 |