Effects of hunting, fishing and climate change on the Hudson Bay marine ecosystem: II. Ecosystem model future projections
Simulations testing the future impacts of harvest and climate change to the Hudson Bay marine ecosystem were created utilizing an existing Ecopath with Ecosim model (Hoover et al., 2013). Building on past simulations depicting known changes to the region, a suite of future scenarios was constructed...
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ftrepec:oai:RePEc:eee:ecomod:v:264:y:2013:i:c:p:143-156 2024-04-14T08:09:44+00:00 Effects of hunting, fishing and climate change on the Hudson Bay marine ecosystem: II. Ecosystem model future projections Hoover, Carie Pitcher, Tony Christensen, Villy http://www.sciencedirect.com/science/article/pii/S0304380013000379 unknown http://www.sciencedirect.com/science/article/pii/S0304380013000379 article ftrepec 2024-03-19T10:30:14Z Simulations testing the future impacts of harvest and climate change to the Hudson Bay marine ecosystem were created utilizing an existing Ecopath with Ecosim model (Hoover et al., 2013). Building on past simulations depicting known changes to the region, a suite of future scenarios was constructed to include a variety of climate change and harvest levels. Previously identified ecosystem shifts favoring pelagic species (zooplankton, planktivorous fish) over benthic species (benthos, benthic feeding fish), are further exaggerated under future climate scenarios. Environmental forcing was incorporated to mimic the declines in sea ice, and increases in temperature causing shifts in the food web from an ice algae–benthos–benthic fish pathway to a spring bloom–zooplankton–planktivorous fish dominated ecosystem. Future simulations indicate some stocks are unable to sustain current harvest levels until the end of the future simulations (2069), and may be extirpated (narwhal, eastern Hudson Bay beluga, polar bears, and walrus). Larger populations of marine mammals (ringed seals and western Hudson Bay beluga) are identified to increase in biomass even under extreme harvest and climate scenarios (a high future climate scenario coupled with a doubling in harvest rates). Harvest mortality is highlighted as an important stressor for some marine mammal stocks and should be investigated further when setting future harvest or conservation targets. Ecopath with Ecosim; Hudson Bay; Ecosystem modelling; Hunting; Fishing; Climate change; Cumulative impacts; Article in Journal/Newspaper Beluga Beluga* Hudson Bay ice algae narwhal* Sea ice walrus* RePEc (Research Papers in Economics) Hudson Bay Hudson |
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Open Polar |
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RePEc (Research Papers in Economics) |
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ftrepec |
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description |
Simulations testing the future impacts of harvest and climate change to the Hudson Bay marine ecosystem were created utilizing an existing Ecopath with Ecosim model (Hoover et al., 2013). Building on past simulations depicting known changes to the region, a suite of future scenarios was constructed to include a variety of climate change and harvest levels. Previously identified ecosystem shifts favoring pelagic species (zooplankton, planktivorous fish) over benthic species (benthos, benthic feeding fish), are further exaggerated under future climate scenarios. Environmental forcing was incorporated to mimic the declines in sea ice, and increases in temperature causing shifts in the food web from an ice algae–benthos–benthic fish pathway to a spring bloom–zooplankton–planktivorous fish dominated ecosystem. Future simulations indicate some stocks are unable to sustain current harvest levels until the end of the future simulations (2069), and may be extirpated (narwhal, eastern Hudson Bay beluga, polar bears, and walrus). Larger populations of marine mammals (ringed seals and western Hudson Bay beluga) are identified to increase in biomass even under extreme harvest and climate scenarios (a high future climate scenario coupled with a doubling in harvest rates). Harvest mortality is highlighted as an important stressor for some marine mammal stocks and should be investigated further when setting future harvest or conservation targets. Ecopath with Ecosim; Hudson Bay; Ecosystem modelling; Hunting; Fishing; Climate change; Cumulative impacts; |
format |
Article in Journal/Newspaper |
author |
Hoover, Carie Pitcher, Tony Christensen, Villy |
spellingShingle |
Hoover, Carie Pitcher, Tony Christensen, Villy Effects of hunting, fishing and climate change on the Hudson Bay marine ecosystem: II. Ecosystem model future projections |
author_facet |
Hoover, Carie Pitcher, Tony Christensen, Villy |
author_sort |
Hoover, Carie |
title |
Effects of hunting, fishing and climate change on the Hudson Bay marine ecosystem: II. Ecosystem model future projections |
title_short |
Effects of hunting, fishing and climate change on the Hudson Bay marine ecosystem: II. Ecosystem model future projections |
title_full |
Effects of hunting, fishing and climate change on the Hudson Bay marine ecosystem: II. Ecosystem model future projections |
title_fullStr |
Effects of hunting, fishing and climate change on the Hudson Bay marine ecosystem: II. Ecosystem model future projections |
title_full_unstemmed |
Effects of hunting, fishing and climate change on the Hudson Bay marine ecosystem: II. Ecosystem model future projections |
title_sort |
effects of hunting, fishing and climate change on the hudson bay marine ecosystem: ii. ecosystem model future projections |
url |
http://www.sciencedirect.com/science/article/pii/S0304380013000379 |
geographic |
Hudson Bay Hudson |
geographic_facet |
Hudson Bay Hudson |
genre |
Beluga Beluga* Hudson Bay ice algae narwhal* Sea ice walrus* |
genre_facet |
Beluga Beluga* Hudson Bay ice algae narwhal* Sea ice walrus* |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0304380013000379 |
_version_ |
1796307208092254208 |