Spatial variation and transport of abundant copepod taxa in the southern Gulf of St. Lawrence in autumn
Abstract The spatial distribution of zooplankton is influenced by complex interactions among population dynamics, vertical positioning and advection. We used empirical observations and particle tracking simulations to investigate variation in horizontal distribution of Calanus spp. and three neritic...
Published in: | Journal of Plankton Research |
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Language: | English |
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Oxford University Press (OUP)
2021
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Online Access: | http://dx.doi.org/10.1093/plankt/fbab066 https://academic.oup.com/plankt/article-pdf/43/6/908/41211835/fbab066.pdf |
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croxfordunivpr:10.1093/plankt/fbab066 2024-10-06T13:47:48+00:00 Spatial variation and transport of abundant copepod taxa in the southern Gulf of St. Lawrence in autumn SOROCHAN, K A BRENNAN, C E PLOURDE, S JOHNSON, C L Fisheries and Oceans Canada’s Whales Initiative 2021 http://dx.doi.org/10.1093/plankt/fbab066 https://academic.oup.com/plankt/article-pdf/43/6/908/41211835/fbab066.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Journal of Plankton Research volume 43, issue 6, page 908-926 ISSN 0142-7873 1464-3774 journal-article 2021 croxfordunivpr https://doi.org/10.1093/plankt/fbab066 2024-09-10T04:15:19Z Abstract The spatial distribution of zooplankton is influenced by complex interactions among population dynamics, vertical positioning and advection. We used empirical observations and particle tracking simulations to investigate variation in horizontal distribution of Calanus spp. and three neritic copepod taxa (Acartia spp., Pseudocalanus sp. and Temora longicornis) in the southern Gulf of St. Lawrence (sGSL) in October 2018. These copepods are potential prey for fish and the endangered North Atlantic right whale, Eubalaena glacialis. We quantified horizontal variation in abundance from a plankton survey, and obtained vertical distributions from a subset of locations and a process study conducted over ~1 day. Horizontal distributions of Calanus finmarchicus and Pseudocalanus sp. were widespread, whereas those of Calanus hyperboreus and C. glacialis were centred in the interior of the sGSL and those of Acartia spp. and T. longicornis were centred on the western side. Horizontal distributions of C. hyperboreus–C. glacialis and C. finmarchicus–Pseudocalanus sp. pairs were highly correlated. Contrasting distributions among C. finmarchicus and its congeners reflect interspecific differences in life history strategy and its interaction with ocean circulation. In autumn, a shift to increased current strength and flow-through circulation may lead to enhanced losses of Calanus spp. in the absence of upstream replenishment. Article in Journal/Newspaper Calanus finmarchicus Calanus hyperboreus Eubalaena glacialis North Atlantic North Atlantic right whale Copepods Oxford University Press Journal of Plankton Research |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract The spatial distribution of zooplankton is influenced by complex interactions among population dynamics, vertical positioning and advection. We used empirical observations and particle tracking simulations to investigate variation in horizontal distribution of Calanus spp. and three neritic copepod taxa (Acartia spp., Pseudocalanus sp. and Temora longicornis) in the southern Gulf of St. Lawrence (sGSL) in October 2018. These copepods are potential prey for fish and the endangered North Atlantic right whale, Eubalaena glacialis. We quantified horizontal variation in abundance from a plankton survey, and obtained vertical distributions from a subset of locations and a process study conducted over ~1 day. Horizontal distributions of Calanus finmarchicus and Pseudocalanus sp. were widespread, whereas those of Calanus hyperboreus and C. glacialis were centred in the interior of the sGSL and those of Acartia spp. and T. longicornis were centred on the western side. Horizontal distributions of C. hyperboreus–C. glacialis and C. finmarchicus–Pseudocalanus sp. pairs were highly correlated. Contrasting distributions among C. finmarchicus and its congeners reflect interspecific differences in life history strategy and its interaction with ocean circulation. In autumn, a shift to increased current strength and flow-through circulation may lead to enhanced losses of Calanus spp. in the absence of upstream replenishment. |
author2 |
Fisheries and Oceans Canada’s Whales Initiative |
format |
Article in Journal/Newspaper |
author |
SOROCHAN, K A BRENNAN, C E PLOURDE, S JOHNSON, C L |
spellingShingle |
SOROCHAN, K A BRENNAN, C E PLOURDE, S JOHNSON, C L Spatial variation and transport of abundant copepod taxa in the southern Gulf of St. Lawrence in autumn |
author_facet |
SOROCHAN, K A BRENNAN, C E PLOURDE, S JOHNSON, C L |
author_sort |
SOROCHAN, K A |
title |
Spatial variation and transport of abundant copepod taxa in the southern Gulf of St. Lawrence in autumn |
title_short |
Spatial variation and transport of abundant copepod taxa in the southern Gulf of St. Lawrence in autumn |
title_full |
Spatial variation and transport of abundant copepod taxa in the southern Gulf of St. Lawrence in autumn |
title_fullStr |
Spatial variation and transport of abundant copepod taxa in the southern Gulf of St. Lawrence in autumn |
title_full_unstemmed |
Spatial variation and transport of abundant copepod taxa in the southern Gulf of St. Lawrence in autumn |
title_sort |
spatial variation and transport of abundant copepod taxa in the southern gulf of st. lawrence in autumn |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1093/plankt/fbab066 https://academic.oup.com/plankt/article-pdf/43/6/908/41211835/fbab066.pdf |
genre |
Calanus finmarchicus Calanus hyperboreus Eubalaena glacialis North Atlantic North Atlantic right whale Copepods |
genre_facet |
Calanus finmarchicus Calanus hyperboreus Eubalaena glacialis North Atlantic North Atlantic right whale Copepods |
op_source |
Journal of Plankton Research volume 43, issue 6, page 908-926 ISSN 0142-7873 1464-3774 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/plankt/fbab066 |
container_title |
Journal of Plankton Research |
_version_ |
1812175977523970048 |