Subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds
Abstract Observed vertical profiles of buoyant particles, in this case pelagic Northeast Arctic (NEA) cod eggs, occasionally deviate from the vertical diffusion‐buoyancy balance by displaying subsurface maxima. Here, we present a mechanism that may explain this phenomenon by combining in situ measur...
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crwiley:10.1002/lno.11109 2024-06-02T08:02:07+00:00 Subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds Strand, Kjersti Opstad Vikebø, Frode Sundby, Svein Sperrevik, Ann Kristin Breivik, øyvind Norges Forskningsråd 2018 http://dx.doi.org/10.1002/lno.11109 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.11109 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11109 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Limnology and Oceanography volume 64, issue 3, page 1239-1251 ISSN 0024-3590 1939-5590 journal-article 2018 crwiley https://doi.org/10.1002/lno.11109 2024-05-03T11:35:32Z Abstract Observed vertical profiles of buoyant particles, in this case pelagic Northeast Arctic (NEA) cod eggs, occasionally deviate from the vertical diffusion‐buoyancy balance by displaying subsurface maxima. Here, we present a mechanism that may explain this phenomenon by combining in situ measurements of NEA cod eggs and concurrent environmental conditions with biophysical modeling of Vestfjorden, Norway. Due to limited observational information, we constructed a spawning season by dispersing eggs with an individual‐based biophysical model forced by a three‐dimensional ocean model including data assimilation improving upper ocean stratification. We show that transient subsurface maxima in eggs are caused by the combination of vertical velocity shear and spatial limitations of spawning grounds. This demonstrates the need for resolving upper ocean small‐scale dynamics in biophysical models to predict horizontal and vertical planktonic dispersal. This is also a precondition for predicting environmental exposure along drift routes, including natural and anthropogenic stressors. Article in Journal/Newspaper Arctic Vestfjorden Wiley Online Library Arctic Norway Limnology and Oceanography 64 3 1239 1251 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Observed vertical profiles of buoyant particles, in this case pelagic Northeast Arctic (NEA) cod eggs, occasionally deviate from the vertical diffusion‐buoyancy balance by displaying subsurface maxima. Here, we present a mechanism that may explain this phenomenon by combining in situ measurements of NEA cod eggs and concurrent environmental conditions with biophysical modeling of Vestfjorden, Norway. Due to limited observational information, we constructed a spawning season by dispersing eggs with an individual‐based biophysical model forced by a three‐dimensional ocean model including data assimilation improving upper ocean stratification. We show that transient subsurface maxima in eggs are caused by the combination of vertical velocity shear and spatial limitations of spawning grounds. This demonstrates the need for resolving upper ocean small‐scale dynamics in biophysical models to predict horizontal and vertical planktonic dispersal. This is also a precondition for predicting environmental exposure along drift routes, including natural and anthropogenic stressors. |
author2 |
Norges Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Strand, Kjersti Opstad Vikebø, Frode Sundby, Svein Sperrevik, Ann Kristin Breivik, øyvind |
spellingShingle |
Strand, Kjersti Opstad Vikebø, Frode Sundby, Svein Sperrevik, Ann Kristin Breivik, øyvind Subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds |
author_facet |
Strand, Kjersti Opstad Vikebø, Frode Sundby, Svein Sperrevik, Ann Kristin Breivik, øyvind |
author_sort |
Strand, Kjersti Opstad |
title |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds |
title_short |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds |
title_full |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds |
title_fullStr |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds |
title_full_unstemmed |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds |
title_sort |
subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/lno.11109 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.11109 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11109 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Vestfjorden |
genre_facet |
Arctic Vestfjorden |
op_source |
Limnology and Oceanography volume 64, issue 3, page 1239-1251 ISSN 0024-3590 1939-5590 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/lno.11109 |
container_title |
Limnology and Oceanography |
container_volume |
64 |
container_issue |
3 |
container_start_page |
1239 |
op_container_end_page |
1251 |
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1800746621169827840 |