Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds
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...
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Online Access: | https://hdl.handle.net/1956/20181 https://doi.org/10.1002/lno.11109 |
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ftunivbergen:oai:bora.uib.no:1956/20181 2023-05-15T15:03:31+02:00 Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds Strand, Kjersti Opstad Vikebø, Frode Bendiksen Sundby, Svein Sperrevik, Ann Kristin Breivik, Øyvind 2019-01-30T12:46:47Z application/pdf https://hdl.handle.net/1956/20181 https://doi.org/10.1002/lno.11109 eng eng Wiley Norges forskningsråd: 244262 urn:issn:0024-3590 urn:issn:1939-5590 https://hdl.handle.net/1956/20181 https://doi.org/10.1002/lno.11109 cristin:1667240 Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright 2018 The Author(s) Limnology and Oceanography Peer reviewed Journal article 2019 ftunivbergen https://doi.org/10.1002/lno.11109 2023-03-14T17:41:15Z 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. publishedVersion Article in Journal/Newspaper Arctic Vestfjorden University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Norway Limnology and Oceanography 64 3 1239 1251 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
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. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Strand, Kjersti Opstad Vikebø, Frode Bendiksen Sundby, Svein Sperrevik, Ann Kristin Breivik, Øyvind |
spellingShingle |
Strand, Kjersti Opstad Vikebø, Frode Bendiksen Sundby, Svein Sperrevik, Ann Kristin Breivik, Øyvind Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds |
author_facet |
Strand, Kjersti Opstad Vikebø, Frode Bendiksen Sundby, Svein Sperrevik, Ann Kristin Breivik, Øyvind |
author_sort |
Strand, Kjersti Opstad |
title |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds |
title_short |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds |
title_full |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds |
title_fullStr |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds |
title_full_unstemmed |
Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds |
title_sort |
subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds |
publisher |
Wiley |
publishDate |
2019 |
url |
https://hdl.handle.net/1956/20181 https://doi.org/10.1002/lno.11109 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Vestfjorden |
genre_facet |
Arctic Vestfjorden |
op_source |
Limnology and Oceanography |
op_relation |
Norges forskningsråd: 244262 urn:issn:0024-3590 urn:issn:1939-5590 https://hdl.handle.net/1956/20181 https://doi.org/10.1002/lno.11109 cristin:1667240 |
op_rights |
Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright 2018 The Author(s) |
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 |
_version_ |
1766335364995219456 |