Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments
Seasonal patterns in mesozooplankton composition, vertical distribution, and timing of reproduction are challenging to study in the open sea due to ocean currents and mix of populations of different origins. Sill fjords, on the other hand, with restricted water exchange, are ideal locations for stud...
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Online Access: | https://hdl.handle.net/10037/27412 https://doi.org/10.3389/fmars.2022.933461 |
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ftunivtroemsoe:oai:munin.uit.no:10037/27412 2023-05-15T14:23:16+02:00 Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments Søreide, Janne Dmoch, Katarzyna Blachowiak-Samolyk, Katarzyna Trudnowska, Emilia Daase, Malin 2022-08-11 https://hdl.handle.net/10037/27412 https://doi.org/10.3389/fmars.2022.933461 eng eng Frontiers Media Frontiers in Marine Science info:eu-repo/grantAgreement/EC/SOCIETAL CHALLENGES/869154/EU/The future of Arctic coastal ecosystems - Identifying transitions in fjord systems and adjacent coastal areas/FACE-IT/ Søreide J, Dmoch, Blachowiak-Samolyk, Trudnowska, Daase. Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments. Frontiers in Marine Science. 2022;9 FRIDAID 2044597 doi:10.3389/fmars.2022.933461 2296-7745 https://hdl.handle.net/10037/27412 Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2022 The Author(s) https://creativecommons.org/licenses/by/4.0 CC-BY Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.3389/fmars.2022.933461 2022-11-24T00:02:11Z Seasonal patterns in mesozooplankton composition, vertical distribution, and timing of reproduction are challenging to study in the open sea due to ocean currents and mix of populations of different origins. Sill fjords, on the other hand, with restricted water exchange, are ideal locations for studying taxa- and community-specific adaptations to the prevailing environment. Here, we present re-occurring patterns in the mesozooplankton community structure in Billefjorden, Svalbard, a high Arctic sill fjord with extensive seasonal ice cover, based on monthly sampling from 2011 to 2013. The zooplankton community composition confirmed the Arctic character of this fjord. Predominantly herbivorous taxa, such as Calanus glacialis and Pseudocalanus spp., showed strong seasonal variation in abundance and depth distribution, with population minima in spring being compensated by a rapid population recovery during summer. Omnivorous taxa, such as Microcalanus spp. and copepods of the family Aetideidae, largely remained at depth throughout the year and had an extended or year-round reproductive period. Deep-dwelling omnivorous/ carnivorous species peaked in abundance in winter–spring when herbivorous populations were severely depleted. Taxa with seasonally limited occurrences, i.e., meroplankton, peaked in spring and summer at the surface, but were largely absent for the rest of the year. The different life histories, with contrasting feeding modes, depth preferences, and timing of reproduction lead to reduced interspecies competition and allow for a rather high and stable abundance of mesozooplankton year-round despite the short primary production window at high latitudes. Article in Journal/Newspaper Arctic Arctic Billefjorden Calanus glacialis Svalbard Zooplankton Copepods University of Tromsø: Munin Open Research Archive Arctic Svalbard Billefjorden ENVELOPE(16.417,16.417,78.563,78.563) Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
Seasonal patterns in mesozooplankton composition, vertical distribution, and timing of reproduction are challenging to study in the open sea due to ocean currents and mix of populations of different origins. Sill fjords, on the other hand, with restricted water exchange, are ideal locations for studying taxa- and community-specific adaptations to the prevailing environment. Here, we present re-occurring patterns in the mesozooplankton community structure in Billefjorden, Svalbard, a high Arctic sill fjord with extensive seasonal ice cover, based on monthly sampling from 2011 to 2013. The zooplankton community composition confirmed the Arctic character of this fjord. Predominantly herbivorous taxa, such as Calanus glacialis and Pseudocalanus spp., showed strong seasonal variation in abundance and depth distribution, with population minima in spring being compensated by a rapid population recovery during summer. Omnivorous taxa, such as Microcalanus spp. and copepods of the family Aetideidae, largely remained at depth throughout the year and had an extended or year-round reproductive period. Deep-dwelling omnivorous/ carnivorous species peaked in abundance in winter–spring when herbivorous populations were severely depleted. Taxa with seasonally limited occurrences, i.e., meroplankton, peaked in spring and summer at the surface, but were largely absent for the rest of the year. The different life histories, with contrasting feeding modes, depth preferences, and timing of reproduction lead to reduced interspecies competition and allow for a rather high and stable abundance of mesozooplankton year-round despite the short primary production window at high latitudes. |
format |
Article in Journal/Newspaper |
author |
Søreide, Janne Dmoch, Katarzyna Blachowiak-Samolyk, Katarzyna Trudnowska, Emilia Daase, Malin |
spellingShingle |
Søreide, Janne Dmoch, Katarzyna Blachowiak-Samolyk, Katarzyna Trudnowska, Emilia Daase, Malin Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments |
author_facet |
Søreide, Janne Dmoch, Katarzyna Blachowiak-Samolyk, Katarzyna Trudnowska, Emilia Daase, Malin |
author_sort |
Søreide, Janne |
title |
Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments |
title_short |
Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments |
title_full |
Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments |
title_fullStr |
Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments |
title_full_unstemmed |
Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments |
title_sort |
seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments |
publisher |
Frontiers Media |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/27412 https://doi.org/10.3389/fmars.2022.933461 |
long_lat |
ENVELOPE(16.417,16.417,78.563,78.563) |
geographic |
Arctic Svalbard Billefjorden |
geographic_facet |
Arctic Svalbard Billefjorden |
genre |
Arctic Arctic Billefjorden Calanus glacialis Svalbard Zooplankton Copepods |
genre_facet |
Arctic Arctic Billefjorden Calanus glacialis Svalbard Zooplankton Copepods |
op_relation |
Frontiers in Marine Science info:eu-repo/grantAgreement/EC/SOCIETAL CHALLENGES/869154/EU/The future of Arctic coastal ecosystems - Identifying transitions in fjord systems and adjacent coastal areas/FACE-IT/ Søreide J, Dmoch, Blachowiak-Samolyk, Trudnowska, Daase. Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments. Frontiers in Marine Science. 2022;9 FRIDAID 2044597 doi:10.3389/fmars.2022.933461 2296-7745 https://hdl.handle.net/10037/27412 |
op_rights |
Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2022 The Author(s) https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2022.933461 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
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1766295830406365184 |