Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard
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 m2, mesh size 200 μm) and 2) a horizontally towed...
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Polish Academy of Sciences
2017
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ftdoajarticles:oai:doaj.org/article:1f1c7595559d45d88ff93b6b0cc1e602 2023-05-15T15:11:05+02:00 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 2017-12-01T00:00:00Z https://doi.org/10.1515/popore-2017-0023 https://doaj.org/article/1f1c7595559d45d88ff93b6b0cc1e602 EN eng Polish Academy of Sciences http://www.degruyter.com/view/j/popore.2017.38.issue-4/popore-2017-0023/popore-2017-0023.xml?format=INT https://doaj.org/toc/2081-8262 2081-8262 doi:10.1515/popore-2017-0023 https://doaj.org/article/1f1c7595559d45d88ff93b6b0cc1e602 Polish Polar Research, Vol 38, Iss 4, Pp 459-484 (2017) Arctic Rijpfjorden zooplankton vertical distribution patterns abundance and size polar night Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.1515/popore-2017-0023 2022-12-31T10:56:28Z 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 m2, mesh size 200 μm) and 2) a horizontally towed Methot Isaacs Kidd trawl (MIK; mouth area 3.14 m2, 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 Arctic polar night Polar Research Rijpfjord* Svalbard Zooplankton Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) Kidd ENVELOPE(-65.972,-65.972,-66.448,-66.448) Rijpfjorden ENVELOPE(22.188,22.188,80.165,80.165) Polish Polar Research 38 4 459 484 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic Rijpfjorden zooplankton vertical distribution patterns abundance and size polar night Geology QE1-996.5 |
spellingShingle |
Arctic Rijpfjorden zooplankton vertical distribution patterns abundance and size polar night Geology QE1-996.5 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 |
Arctic Rijpfjorden zooplankton vertical distribution patterns abundance and size polar night Geology QE1-996.5 |
description |
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 m2, mesh size 200 μm) and 2) a horizontally towed Methot Isaacs Kidd trawl (MIK; mouth area 3.14 m2, 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 |
Polish Academy of Sciences |
publishDate |
2017 |
url |
https://doi.org/10.1515/popore-2017-0023 https://doaj.org/article/1f1c7595559d45d88ff93b6b0cc1e602 |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) ENVELOPE(-65.972,-65.972,-66.448,-66.448) ENVELOPE(22.188,22.188,80.165,80.165) |
geographic |
Arctic Svalbard Midwinter Kidd Rijpfjorden |
geographic_facet |
Arctic Svalbard Midwinter Kidd Rijpfjorden |
genre |
Arctic polar night Polar Research Rijpfjord* Svalbard Zooplankton |
genre_facet |
Arctic polar night Polar Research Rijpfjord* Svalbard Zooplankton |
op_source |
Polish Polar Research, Vol 38, Iss 4, Pp 459-484 (2017) |
op_relation |
http://www.degruyter.com/view/j/popore.2017.38.issue-4/popore-2017-0023/popore-2017-0023.xml?format=INT https://doaj.org/toc/2081-8262 2081-8262 doi:10.1515/popore-2017-0023 https://doaj.org/article/1f1c7595559d45d88ff93b6b0cc1e602 |
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_ |
1766341985424113664 |