Habitat selection by a marine copepod during the productive season in the Subarctic
Few studies have analysed the depth distribution of marine zooplankton at high-resolution, and knowledge obtained from theoretical modelling studies predominates over that from empirical field studies. We analysed depth selection by the marine copepod Calanus finmarchicus during spring and summer in...
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Online Access: | https://hdl.handle.net/10037/8144 https://doi.org/10.3354/meps08754 |
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ftunivtroemsoe:oai:munin.uit.no:10037/8144 2023-05-15T15:48:02+02:00 Habitat selection by a marine copepod during the productive season in the Subarctic Basedow, Sünnje Linnéa Tande, Kurt Steinar Stige, Leif Christian 2010-10-14 https://hdl.handle.net/10037/8144 https://doi.org/10.3354/meps08754 eng eng Marine Ecology Progress Series 416(2010) s. 165-178 FRIDAID 349746 doi:10.3354/meps08754 0171-8630 https://hdl.handle.net/10037/8144 URN:NBN:no-uit_munin_7725 openAccess Habitat choice Depth selection Optical plankton counter Generalized additive mixed model GAMM Calanus Density-dependence Seasonality VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed 2010 ftunivtroemsoe https://doi.org/10.3354/meps08754 2021-06-25T17:54:22Z Few studies have analysed the depth distribution of marine zooplankton at high-resolution, and knowledge obtained from theoretical modelling studies predominates over that from empirical field studies. We analysed depth selection by the marine copepod Calanus finmarchicus during spring and summer in neritic and oceanic Subarctic regions. Data on hydrography and zooplankton distribution in the upper 100 m were collected at high resolution by a towed instrument platform equipped with CTD, fluorometer and an optical plankton counter. Four extensive field data sets covering time windows from 3 to 11 d during the productive season were analysed using generalized additive mixed models. Our main findings were that: (1) mean depth of older development stages (CV and adults) of C. finmarchicus was best predicted by biotic factors (depth of the fluorescence maximum and population density), while abiotic factors (depth of the pycnocline) were of secondary importance, (2) depth selection was similar in neritic and oceanic areas, and (3) there was no evidence for synchronous diel vertical migration. Our results suggest that copepods dynamically and consistently select their habitat (depth) based on food conditions and predators in a density-dependent manner. We conclude that ecological interactions may drive habitat choice of planktonic organisms even in highly fluctuating oceanic environments. Article in Journal/Newspaper Calanus finmarchicus Subarctic Copepods University of Tromsø: Munin Open Research Archive Marine Ecology Progress Series 416 165 178 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
Habitat choice Depth selection Optical plankton counter Generalized additive mixed model GAMM Calanus Density-dependence Seasonality VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
Habitat choice Depth selection Optical plankton counter Generalized additive mixed model GAMM Calanus Density-dependence Seasonality VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Basedow, Sünnje Linnéa Tande, Kurt Steinar Stige, Leif Christian Habitat selection by a marine copepod during the productive season in the Subarctic |
topic_facet |
Habitat choice Depth selection Optical plankton counter Generalized additive mixed model GAMM Calanus Density-dependence Seasonality VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Few studies have analysed the depth distribution of marine zooplankton at high-resolution, and knowledge obtained from theoretical modelling studies predominates over that from empirical field studies. We analysed depth selection by the marine copepod Calanus finmarchicus during spring and summer in neritic and oceanic Subarctic regions. Data on hydrography and zooplankton distribution in the upper 100 m were collected at high resolution by a towed instrument platform equipped with CTD, fluorometer and an optical plankton counter. Four extensive field data sets covering time windows from 3 to 11 d during the productive season were analysed using generalized additive mixed models. Our main findings were that: (1) mean depth of older development stages (CV and adults) of C. finmarchicus was best predicted by biotic factors (depth of the fluorescence maximum and population density), while abiotic factors (depth of the pycnocline) were of secondary importance, (2) depth selection was similar in neritic and oceanic areas, and (3) there was no evidence for synchronous diel vertical migration. Our results suggest that copepods dynamically and consistently select their habitat (depth) based on food conditions and predators in a density-dependent manner. We conclude that ecological interactions may drive habitat choice of planktonic organisms even in highly fluctuating oceanic environments. |
format |
Article in Journal/Newspaper |
author |
Basedow, Sünnje Linnéa Tande, Kurt Steinar Stige, Leif Christian |
author_facet |
Basedow, Sünnje Linnéa Tande, Kurt Steinar Stige, Leif Christian |
author_sort |
Basedow, Sünnje Linnéa |
title |
Habitat selection by a marine copepod during the productive season in the Subarctic |
title_short |
Habitat selection by a marine copepod during the productive season in the Subarctic |
title_full |
Habitat selection by a marine copepod during the productive season in the Subarctic |
title_fullStr |
Habitat selection by a marine copepod during the productive season in the Subarctic |
title_full_unstemmed |
Habitat selection by a marine copepod during the productive season in the Subarctic |
title_sort |
habitat selection by a marine copepod during the productive season in the subarctic |
publishDate |
2010 |
url |
https://hdl.handle.net/10037/8144 https://doi.org/10.3354/meps08754 |
genre |
Calanus finmarchicus Subarctic Copepods |
genre_facet |
Calanus finmarchicus Subarctic Copepods |
op_relation |
Marine Ecology Progress Series 416(2010) s. 165-178 FRIDAID 349746 doi:10.3354/meps08754 0171-8630 https://hdl.handle.net/10037/8144 URN:NBN:no-uit_munin_7725 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3354/meps08754 |
container_title |
Marine Ecology Progress Series |
container_volume |
416 |
container_start_page |
165 |
op_container_end_page |
178 |
_version_ |
1766383030822240256 |