Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard
Abstract During a midwinter cruise north of 80°N to Rijpfjorden, Svalbard, the composition and vertical distribution of the zooplankton community were studied using two different samplers 1) a vertically hauled multiple plankton sampler (MPS; mouth area 0.25 m 2 , mesh size 200 μm) and 2) a horizont...
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Walter de Gruyter GmbH
2017
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Online Access: | http://dx.doi.org/10.1515/popore-2017-0023 http://content.sciendo.com/view/journals/popore/38/4/article-p459.xml http://www.degruyter.com/view/j/popore.2017.38.issue-4/popore-2017-0023/popore-2017-0023.pdf |
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crdegruyter:10.1515/popore-2017-0023 2024-04-28T08:36:41+00:00 Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard Błachowiak-Samołyk, Katarzyna Zwolicki, Adrian Webster, Clare N. Boehnke, Rafał Wichorowski, Marcin Wold, Anette Bielecka, Luiza 2017 http://dx.doi.org/10.1515/popore-2017-0023 http://content.sciendo.com/view/journals/popore/38/4/article-p459.xml http://www.degruyter.com/view/j/popore.2017.38.issue-4/popore-2017-0023/popore-2017-0023.pdf unknown Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/3.0 Polish Polar Research volume 38, issue 4, page 459-484 ISSN 2081-8262 Ecology Ecology, Evolution, Behavior and Systematics journal-article 2017 crdegruyter https://doi.org/10.1515/popore-2017-0023 2024-04-02T06:57:44Z Abstract During a midwinter cruise north of 80°N to Rijpfjorden, Svalbard, the composition and vertical distribution of the zooplankton community were studied using two different samplers 1) a vertically hauled multiple plankton sampler (MPS; mouth area 0.25 m 2 , mesh size 200 μm) and 2) a horizontally towed Methot Isaacs Kidd trawl (MIK; mouth area 3.14 m 2 , mesh size 1500 μm). Our results revealed substantially higher species diversity (49 taxa) than if a single sampler (MPS: 38 taxa, MIK: 28) had been used. The youngest stage present (CIII) of Calanus spp. (including C. finmarchicus and C. glacialis ) was sampled exclusively by the MPS, and the frequency of CIV copepodites in MPS was double that than in MIK samples. In contrast, catches of the CV-CVI copepodites of Calanus spp. were substantially higher in the MIK samples (3-fold and 5-fold higher for adult males and females, respectively). The MIK sampling clearly showed that the highest abundances of all three Thysanoessa spp. were in the upper layers, although there was a tendency for the larger-sized euphausiids to occur deeper. Consistent patterns for the vertical distributions of the large zooplankters ( e.g. ctenophores, euphausiids) collected by the MPS and MIK samplers provided more complete data on their abundances and sizes than obtained by the single net. Possible mechanisms contributing to the observed patterns of distribution, e.g. high abundances of both Calanus spp. and their predators (ctenophores and chaetognaths) in the upper water layers during midwinter are discussed. Article in Journal/Newspaper Polar Research Rijpfjord* Svalbard De Gruyter Polish Polar Research 38 4 459 484 |
institution |
Open Polar |
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De Gruyter |
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crdegruyter |
language |
unknown |
topic |
Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Ecology, Evolution, Behavior and Systematics Błachowiak-Samołyk, Katarzyna Zwolicki, Adrian Webster, Clare N. Boehnke, Rafał Wichorowski, Marcin Wold, Anette Bielecka, Luiza Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard |
topic_facet |
Ecology Ecology, Evolution, Behavior and Systematics |
description |
Abstract During a midwinter cruise north of 80°N to Rijpfjorden, Svalbard, the composition and vertical distribution of the zooplankton community were studied using two different samplers 1) a vertically hauled multiple plankton sampler (MPS; mouth area 0.25 m 2 , mesh size 200 μm) and 2) a horizontally towed Methot Isaacs Kidd trawl (MIK; mouth area 3.14 m 2 , mesh size 1500 μm). Our results revealed substantially higher species diversity (49 taxa) than if a single sampler (MPS: 38 taxa, MIK: 28) had been used. The youngest stage present (CIII) of Calanus spp. (including C. finmarchicus and C. glacialis ) was sampled exclusively by the MPS, and the frequency of CIV copepodites in MPS was double that than in MIK samples. In contrast, catches of the CV-CVI copepodites of Calanus spp. were substantially higher in the MIK samples (3-fold and 5-fold higher for adult males and females, respectively). The MIK sampling clearly showed that the highest abundances of all three Thysanoessa spp. were in the upper layers, although there was a tendency for the larger-sized euphausiids to occur deeper. Consistent patterns for the vertical distributions of the large zooplankters ( e.g. ctenophores, euphausiids) collected by the MPS and MIK samplers provided more complete data on their abundances and sizes than obtained by the single net. Possible mechanisms contributing to the observed patterns of distribution, e.g. high abundances of both Calanus spp. and their predators (ctenophores and chaetognaths) in the upper water layers during midwinter are discussed. |
format |
Article in Journal/Newspaper |
author |
Błachowiak-Samołyk, Katarzyna Zwolicki, Adrian Webster, Clare N. Boehnke, Rafał Wichorowski, Marcin Wold, Anette Bielecka, Luiza |
author_facet |
Błachowiak-Samołyk, Katarzyna Zwolicki, Adrian Webster, Clare N. Boehnke, Rafał Wichorowski, Marcin Wold, Anette Bielecka, Luiza |
author_sort |
Błachowiak-Samołyk, Katarzyna |
title |
Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard |
title_short |
Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard |
title_full |
Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard |
title_fullStr |
Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard |
title_full_unstemmed |
Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard |
title_sort |
characterisation of large zooplankton sampled with two different gears during midwinter in rijpfjorden, svalbard |
publisher |
Walter de Gruyter GmbH |
publishDate |
2017 |
url |
http://dx.doi.org/10.1515/popore-2017-0023 http://content.sciendo.com/view/journals/popore/38/4/article-p459.xml http://www.degruyter.com/view/j/popore.2017.38.issue-4/popore-2017-0023/popore-2017-0023.pdf |
genre |
Polar Research Rijpfjord* Svalbard |
genre_facet |
Polar Research Rijpfjord* Svalbard |
op_source |
Polish Polar Research volume 38, issue 4, page 459-484 ISSN 2081-8262 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/3.0 |
op_doi |
https://doi.org/10.1515/popore-2017-0023 |
container_title |
Polish Polar Research |
container_volume |
38 |
container_issue |
4 |
container_start_page |
459 |
op_container_end_page |
484 |
_version_ |
1797568366636957696 |