Seasonal dynamics and life histories of three sympatric species of Pseudocalanus in two Svalbard fjords
Small copepods are the most diverse and numerous group in high-latitude zooplankton, yet our knowledge of important species remains poor because of the difficulties involved in correct species identification. In this study, we use a molecular method of identification, a species-specific polymerase c...
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ftpubmed:oai:pubmedcentral.nih.gov:8355481 2023-05-15T13:05:52+02:00 Seasonal dynamics and life histories of three sympatric species of Pseudocalanus in two Svalbard fjords Ershova, Elizaveta A Nyeggen, Margot U Yurikova, Daria A Søreide, Janne E 2021-03-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8355481/ https://doi.org/10.1093/plankt/fbab007 en eng Oxford University Press http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8355481/ http://dx.doi.org/10.1093/plankt/fbab007 © The Author(s) 2021. Published by Oxford University Press. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY J Plankton Res Original Article Text 2021 ftpubmed https://doi.org/10.1093/plankt/fbab007 2021-08-15T00:50:15Z Small copepods are the most diverse and numerous group in high-latitude zooplankton, yet our knowledge of important species remains poor because of the difficulties involved in correct species identification. In this study, we use a molecular method of identification, a species-specific polymerase chain reaction, to provide the first description of the seasonal dynamics and life histories of the important genus Pseudocalanus in two Svalbard fjords with contrasting environments. We conducted monthly investigations in the relatively warm and ice-free Adventfjorden, supplemented with seasonal samples from the colder, seasonally ice-covered Billefjorden. We found three species of Pseudocalanus (the Arctic P. acuspes and P. minutus, and the boreal P. moultoni). Pseudocalanus acuspes had a distinct annual life cycle and dominated during summer, when it actively reproduced. Surprisingly, the boreal P. moultoni was present year-round in both fjords and was the dominant species during winter; the presence of all life stages of this species throughout the year suggests a more continuous reproduction. The Arctic P. minutus was the rarest of the three species and was likely able to complete its life cycle in Billefjorden but not in Adventfjorden. Our study demonstrates that closely related species may have different life strategies and environmental preferences, which presumably make high-latitude zooplankton communities more resilient to climate change impacts on genus but not necessarily on species level. Text Adventfjorden Arctic Billefjorden Climate change Svalbard Zooplankton Copepods PubMed Central (PMC) Adventfjorden ENVELOPE(15.515,15.515,78.258,78.258) Arctic Billefjorden ENVELOPE(16.417,16.417,78.563,78.563) Svalbard Journal of Plankton Research 43 2 209 223 |
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Open Polar |
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PubMed Central (PMC) |
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ftpubmed |
language |
English |
topic |
Original Article |
spellingShingle |
Original Article Ershova, Elizaveta A Nyeggen, Margot U Yurikova, Daria A Søreide, Janne E Seasonal dynamics and life histories of three sympatric species of Pseudocalanus in two Svalbard fjords |
topic_facet |
Original Article |
description |
Small copepods are the most diverse and numerous group in high-latitude zooplankton, yet our knowledge of important species remains poor because of the difficulties involved in correct species identification. In this study, we use a molecular method of identification, a species-specific polymerase chain reaction, to provide the first description of the seasonal dynamics and life histories of the important genus Pseudocalanus in two Svalbard fjords with contrasting environments. We conducted monthly investigations in the relatively warm and ice-free Adventfjorden, supplemented with seasonal samples from the colder, seasonally ice-covered Billefjorden. We found three species of Pseudocalanus (the Arctic P. acuspes and P. minutus, and the boreal P. moultoni). Pseudocalanus acuspes had a distinct annual life cycle and dominated during summer, when it actively reproduced. Surprisingly, the boreal P. moultoni was present year-round in both fjords and was the dominant species during winter; the presence of all life stages of this species throughout the year suggests a more continuous reproduction. The Arctic P. minutus was the rarest of the three species and was likely able to complete its life cycle in Billefjorden but not in Adventfjorden. Our study demonstrates that closely related species may have different life strategies and environmental preferences, which presumably make high-latitude zooplankton communities more resilient to climate change impacts on genus but not necessarily on species level. |
format |
Text |
author |
Ershova, Elizaveta A Nyeggen, Margot U Yurikova, Daria A Søreide, Janne E |
author_facet |
Ershova, Elizaveta A Nyeggen, Margot U Yurikova, Daria A Søreide, Janne E |
author_sort |
Ershova, Elizaveta A |
title |
Seasonal dynamics and life histories of three sympatric species of Pseudocalanus in two Svalbard fjords |
title_short |
Seasonal dynamics and life histories of three sympatric species of Pseudocalanus in two Svalbard fjords |
title_full |
Seasonal dynamics and life histories of three sympatric species of Pseudocalanus in two Svalbard fjords |
title_fullStr |
Seasonal dynamics and life histories of three sympatric species of Pseudocalanus in two Svalbard fjords |
title_full_unstemmed |
Seasonal dynamics and life histories of three sympatric species of Pseudocalanus in two Svalbard fjords |
title_sort |
seasonal dynamics and life histories of three sympatric species of pseudocalanus in two svalbard fjords |
publisher |
Oxford University Press |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8355481/ https://doi.org/10.1093/plankt/fbab007 |
long_lat |
ENVELOPE(15.515,15.515,78.258,78.258) ENVELOPE(16.417,16.417,78.563,78.563) |
geographic |
Adventfjorden Arctic Billefjorden Svalbard |
geographic_facet |
Adventfjorden Arctic Billefjorden Svalbard |
genre |
Adventfjorden Arctic Billefjorden Climate change Svalbard Zooplankton Copepods |
genre_facet |
Adventfjorden Arctic Billefjorden Climate change Svalbard Zooplankton Copepods |
op_source |
J Plankton Res |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8355481/ http://dx.doi.org/10.1093/plankt/fbab007 |
op_rights |
© The Author(s) 2021. Published by Oxford University Press. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1093/plankt/fbab007 |
container_title |
Journal of Plankton Research |
container_volume |
43 |
container_issue |
2 |
container_start_page |
209 |
op_container_end_page |
223 |
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1766396084659159040 |