Potential future fisheries yields in shelf waters: a model study of the effects of climate change and ocean acidification
We applied a coupled marine water column model to three sites in the North Sea. The three sites represent different hydrodynamic regimes and are thus representative of a wider area. The model consists of a hydro-biogeochemical model (GOTM-ERSEM-BFM) coupled one way upwards to a size-structured model...
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Online Access: | https://doi.org/10.5194/bg-13-441-2016 https://www.biogeosciences.net/13/441/2016/ |
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ftcopernicus:oai:publications.copernicus.org:bg30314 2023-05-15T17:50:03+02:00 Potential future fisheries yields in shelf waters: a model study of the effects of climate change and ocean acidification van Leeuwen, S. M. Le Quesne, W. F. Parker, E. R. 2018-09-27 application/pdf https://doi.org/10.5194/bg-13-441-2016 https://www.biogeosciences.net/13/441/2016/ eng eng doi:10.5194/bg-13-441-2016 https://www.biogeosciences.net/13/441/2016/ eISSN: 1726-4189 Text 2018 ftcopernicus https://doi.org/10.5194/bg-13-441-2016 2019-12-24T09:52:50Z We applied a coupled marine water column model to three sites in the North Sea. The three sites represent different hydrodynamic regimes and are thus representative of a wider area. The model consists of a hydro-biogeochemical model (GOTM-ERSEM-BFM) coupled one way upwards to a size-structured model representing pelagic predators and detritivores (Blanchard et al., 2009). Thus, bottom-up pressures like changing abiotic environment (climate change, chemical cycling) will have an impact on fish biomass across the size spectrum. Here, we studied three different impacts of future conditions on fish yield: climatic impacts (medium emission scenario), abiotic ocean acidification impacts (reduced pelagic nitrification), and biotic ocean acidification impacts (reduced detritivore growth rate). The three impacts were studied separately and combined, and results showed that sites within different hydrodynamic regimes can respond very differently. The seasonally stratified site showed an increase in fish yields (occurring in winter and spring), with acidification effects of the same order of magnitude as climatic effects. The permanently mixed site also showed an increase in fish yield (increase in summer, decrease in winter), due to climatic effects moderated by acidification impacts. The third site, which is characterised by large inter-annual variability in thermal stratification duration, showed a decline in fish yields (occurring in winter) due to decline in the benthic system which forms an important carbon pathway at this site. All sites displayed a shift towards a more pelagic-oriented system. Text Ocean acidification Copernicus Publications: E-Journals Blanchard ENVELOPE(-62.083,-62.083,-64.733,-64.733) Biogeosciences 13 2 441 454 |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
We applied a coupled marine water column model to three sites in the North Sea. The three sites represent different hydrodynamic regimes and are thus representative of a wider area. The model consists of a hydro-biogeochemical model (GOTM-ERSEM-BFM) coupled one way upwards to a size-structured model representing pelagic predators and detritivores (Blanchard et al., 2009). Thus, bottom-up pressures like changing abiotic environment (climate change, chemical cycling) will have an impact on fish biomass across the size spectrum. Here, we studied three different impacts of future conditions on fish yield: climatic impacts (medium emission scenario), abiotic ocean acidification impacts (reduced pelagic nitrification), and biotic ocean acidification impacts (reduced detritivore growth rate). The three impacts were studied separately and combined, and results showed that sites within different hydrodynamic regimes can respond very differently. The seasonally stratified site showed an increase in fish yields (occurring in winter and spring), with acidification effects of the same order of magnitude as climatic effects. The permanently mixed site also showed an increase in fish yield (increase in summer, decrease in winter), due to climatic effects moderated by acidification impacts. The third site, which is characterised by large inter-annual variability in thermal stratification duration, showed a decline in fish yields (occurring in winter) due to decline in the benthic system which forms an important carbon pathway at this site. All sites displayed a shift towards a more pelagic-oriented system. |
format |
Text |
author |
van Leeuwen, S. M. Le Quesne, W. F. Parker, E. R. |
spellingShingle |
van Leeuwen, S. M. Le Quesne, W. F. Parker, E. R. Potential future fisheries yields in shelf waters: a model study of the effects of climate change and ocean acidification |
author_facet |
van Leeuwen, S. M. Le Quesne, W. F. Parker, E. R. |
author_sort |
van Leeuwen, S. M. |
title |
Potential future fisheries yields in shelf waters: a model study of the effects of climate change and ocean acidification |
title_short |
Potential future fisheries yields in shelf waters: a model study of the effects of climate change and ocean acidification |
title_full |
Potential future fisheries yields in shelf waters: a model study of the effects of climate change and ocean acidification |
title_fullStr |
Potential future fisheries yields in shelf waters: a model study of the effects of climate change and ocean acidification |
title_full_unstemmed |
Potential future fisheries yields in shelf waters: a model study of the effects of climate change and ocean acidification |
title_sort |
potential future fisheries yields in shelf waters: a model study of the effects of climate change and ocean acidification |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-13-441-2016 https://www.biogeosciences.net/13/441/2016/ |
long_lat |
ENVELOPE(-62.083,-62.083,-64.733,-64.733) |
geographic |
Blanchard |
geographic_facet |
Blanchard |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
eISSN: 1726-4189 |
op_relation |
doi:10.5194/bg-13-441-2016 https://www.biogeosciences.net/13/441/2016/ |
op_doi |
https://doi.org/10.5194/bg-13-441-2016 |
container_title |
Biogeosciences |
container_volume |
13 |
container_issue |
2 |
container_start_page |
441 |
op_container_end_page |
454 |
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1766156637902471168 |