Plankton community composition and vertical migration during polar night in Kongsfjorden
The polar night in the Arctic is characterized by up to six months of darkness, low temperatures and limited food availability. Biological data on species composition and abundance during this period are scarce due to the logistical challenges posed when sampling these regions. Here, we characterize...
Published in: | Polar Biology |
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2016
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ftuhipublicatio:oai:pure.atira.dk:publications/84581d29-64cc-4948-bb3a-b270eef80eca 2024-02-04T09:58:22+01:00 Plankton community composition and vertical migration during polar night in Kongsfjorden Grenvald, Julie Cornelius Callesen, Trine Abraham Daase, Malin Hobbs, Laura Darnis, Gérald Renaud, Paul E Cottier, Finlo Nielsen, Torkel Gissel Berge, Jørgen 2016-10-01 application/pdf https://pure.uhi.ac.uk/en/publications/84581d29-64cc-4948-bb3a-b270eef80eca https://doi.org/10.1007/s00300-016-2015-x https://pureadmin.uhi.ac.uk/ws/files/2033697/Revised_manuscript.pdf http://link.springer.com/article/10.1007%2Fs00300-016-2015-x eng eng info:eu-repo/semantics/openAccess Grenvald , J C , Callesen , T A , Daase , M , Hobbs , L , Darnis , G , Renaud , P E , Cottier , F , Nielsen , T G & Berge , J 2016 , ' Plankton community composition and vertical migration during polar night in Kongsfjorden ' , Polar Biology , vol. 39 , no. 10 , pp. 1879-1895 . https://doi.org/10.1007/s00300-016-2015-x Protists Zooplankton Vertical migration Polar night Kongsfjorden Svalbard article 2016 ftuhipublicatio https://doi.org/10.1007/s00300-016-2015-x 2024-01-11T23:21:12Z The polar night in the Arctic is characterized by up to six months of darkness, low temperatures and limited food availability. Biological data on species composition and abundance during this period are scarce due to the logistical challenges posed when sampling these regions. Here, we characterize the plankton community composition during the polar night using water samplers and zooplankton net samples (50, 64, 200, 1500 μm), supplemented by acoustics (ADCPs, 300 kHz), to address a previously unresolved question–which species of zooplankton perform diel vertical migration during the polar night? The protist community (smallest plankton fraction) was mainly represented by ciliates (Strombidiida). In the larger zooplankton fractions (50, 64, 200 μm) the species composition was represented primarily by copepod nauplii and small copepods (e.g., Microcalanus spp., Pseudocalanus spp. and Oithona similis). In the largest zooplankton fraction (>1500 μm), the euphausiid, Thysanoessa inermis, was the most abundant species followed by the chaetognath Parasagitta elegans. Classical DVM was not observed throughout the darkest parts of the polar night (November–mid-January), although, subtle vertical migration patterns were detected in the acoustic data. With the occurrence of a more distinct day–night cycle (i.e., end of January), acoustical DVM signals were observed, paralleled by a classical DVM pattern in February in the largest fractions of zooplankton net samples. We suggest that Thysanoessa spp. are main responsible for the acoustical migration patterns throughout the polar night, although, chaetognaths and copepods may be co-responsible. Article in Journal/Newspaper Arctic Kongsfjord* Kongsfjorden Polar Biology polar night Svalbard Zooplankton Copepods Thysanoessa inermis University of the Highlands and Islands: Research Database of UHI Arctic Svalbard Polar Biology 39 10 1879 1895 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Protists Zooplankton Vertical migration Polar night Kongsfjorden Svalbard |
spellingShingle |
Protists Zooplankton Vertical migration Polar night Kongsfjorden Svalbard Grenvald, Julie Cornelius Callesen, Trine Abraham Daase, Malin Hobbs, Laura Darnis, Gérald Renaud, Paul E Cottier, Finlo Nielsen, Torkel Gissel Berge, Jørgen Plankton community composition and vertical migration during polar night in Kongsfjorden |
topic_facet |
Protists Zooplankton Vertical migration Polar night Kongsfjorden Svalbard |
description |
The polar night in the Arctic is characterized by up to six months of darkness, low temperatures and limited food availability. Biological data on species composition and abundance during this period are scarce due to the logistical challenges posed when sampling these regions. Here, we characterize the plankton community composition during the polar night using water samplers and zooplankton net samples (50, 64, 200, 1500 μm), supplemented by acoustics (ADCPs, 300 kHz), to address a previously unresolved question–which species of zooplankton perform diel vertical migration during the polar night? The protist community (smallest plankton fraction) was mainly represented by ciliates (Strombidiida). In the larger zooplankton fractions (50, 64, 200 μm) the species composition was represented primarily by copepod nauplii and small copepods (e.g., Microcalanus spp., Pseudocalanus spp. and Oithona similis). In the largest zooplankton fraction (>1500 μm), the euphausiid, Thysanoessa inermis, was the most abundant species followed by the chaetognath Parasagitta elegans. Classical DVM was not observed throughout the darkest parts of the polar night (November–mid-January), although, subtle vertical migration patterns were detected in the acoustic data. With the occurrence of a more distinct day–night cycle (i.e., end of January), acoustical DVM signals were observed, paralleled by a classical DVM pattern in February in the largest fractions of zooplankton net samples. We suggest that Thysanoessa spp. are main responsible for the acoustical migration patterns throughout the polar night, although, chaetognaths and copepods may be co-responsible. |
format |
Article in Journal/Newspaper |
author |
Grenvald, Julie Cornelius Callesen, Trine Abraham Daase, Malin Hobbs, Laura Darnis, Gérald Renaud, Paul E Cottier, Finlo Nielsen, Torkel Gissel Berge, Jørgen |
author_facet |
Grenvald, Julie Cornelius Callesen, Trine Abraham Daase, Malin Hobbs, Laura Darnis, Gérald Renaud, Paul E Cottier, Finlo Nielsen, Torkel Gissel Berge, Jørgen |
author_sort |
Grenvald, Julie Cornelius |
title |
Plankton community composition and vertical migration during polar night in Kongsfjorden |
title_short |
Plankton community composition and vertical migration during polar night in Kongsfjorden |
title_full |
Plankton community composition and vertical migration during polar night in Kongsfjorden |
title_fullStr |
Plankton community composition and vertical migration during polar night in Kongsfjorden |
title_full_unstemmed |
Plankton community composition and vertical migration during polar night in Kongsfjorden |
title_sort |
plankton community composition and vertical migration during polar night in kongsfjorden |
publishDate |
2016 |
url |
https://pure.uhi.ac.uk/en/publications/84581d29-64cc-4948-bb3a-b270eef80eca https://doi.org/10.1007/s00300-016-2015-x https://pureadmin.uhi.ac.uk/ws/files/2033697/Revised_manuscript.pdf http://link.springer.com/article/10.1007%2Fs00300-016-2015-x |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Kongsfjord* Kongsfjorden Polar Biology polar night Svalbard Zooplankton Copepods Thysanoessa inermis |
genre_facet |
Arctic Kongsfjord* Kongsfjorden Polar Biology polar night Svalbard Zooplankton Copepods Thysanoessa inermis |
op_source |
Grenvald , J C , Callesen , T A , Daase , M , Hobbs , L , Darnis , G , Renaud , P E , Cottier , F , Nielsen , T G & Berge , J 2016 , ' Plankton community composition and vertical migration during polar night in Kongsfjorden ' , Polar Biology , vol. 39 , no. 10 , pp. 1879-1895 . https://doi.org/10.1007/s00300-016-2015-x |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00300-016-2015-x |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
10 |
container_start_page |
1879 |
op_container_end_page |
1895 |
_version_ |
1789962799846260736 |