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...
Published in: | Frontiers in Marine Science |
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Online Access: | https://doi.org/10.3389/fmars.2022.933461 |
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ftzenodo:oai:zenodo.org:10459598 2024-09-15T17:59:53+00:00 Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments Søreide, Janne E. Dmoch, Katarzyna Błachowiak-Samołyk, Katarzyna Trudnowska, Emilia Daase, Malin 2022-08-11 https://doi.org/10.3389/fmars.2022.933461 unknown Zenodo https://zenodo.org/communities/face-it https://doi.org/10.3389/fmars.2022.933461 oai:zenodo.org:10459598 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Frontiers in Marine Science, 9, 933461, (2022-08-11) info:eu-repo/semantics/other 2022 ftzenodo https://doi.org/10.3389/fmars.2022.933461 2024-07-25T16:49:00Z 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. Other/Unknown Material Billefjorden Calanus glacialis Svalbard Zooplankton Copepods Zenodo Frontiers in Marine Science 9 |
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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 |
Other/Unknown Material |
author |
Søreide, Janne E. Dmoch, Katarzyna Błachowiak-Samołyk, Katarzyna Trudnowska, Emilia Daase, Malin |
spellingShingle |
Søreide, Janne E. Dmoch, Katarzyna Błachowiak-Samołyk, Katarzyna Trudnowska, Emilia Daase, Malin Seasonal mesozooplankton patterns and timing of life history events in high-arctic fjord environments |
author_facet |
Søreide, Janne E. Dmoch, Katarzyna Błachowiak-Samołyk, Katarzyna Trudnowska, Emilia Daase, Malin |
author_sort |
Søreide, Janne E. |
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 |
Zenodo |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.933461 |
genre |
Billefjorden Calanus glacialis Svalbard Zooplankton Copepods |
genre_facet |
Billefjorden Calanus glacialis Svalbard Zooplankton Copepods |
op_source |
Frontiers in Marine Science, 9, 933461, (2022-08-11) |
op_relation |
https://zenodo.org/communities/face-it https://doi.org/10.3389/fmars.2022.933461 oai:zenodo.org:10459598 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.3389/fmars.2022.933461 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1810437012755316736 |