144010 - Relative impacts of simultaneous stressors on a pelagic marine ecosystem.pdf (4.67 MB)
Relative impacts of simultaneous stressors on a pelagic marine ecosystem
journal contribution
posted on 2023-05-20, 22:53 authored by Woodworth-Jefcoats, PA, Julia BlanchardJulia Blanchard, Drazen, JCClimate change and fishing are two of the greatest anthropogenic stressors on marine ecosystems. We investigate the effects of these stressors on Hawaii's deep-set longline fishery for bigeye tuna (Thunnus obesus) and the ecosystem which supports it using a size-based food web model that incorporates individual species and captures the metabolic effects of rising ocean temperatures. We find that when fishing and climate change are examined individually, fishing is the greater stressor. This suggests that proactive fisheries management could be a particularly effective tool for mitigating anthropogenic stressors either by balancing or outweighing climate effects. However, modeling these stressors jointly shows that even large management changes cannot completely offset climate effects. Our results suggest that a decline in Hawaii's longline fishery yield may be inevitable. The effect of climate change on the ecosystem depends primarily upon the intensity of fishing mortality. Management measures which take this into account can both minimize fishery decline and support at least some level of ecosystem resilience.
History
Publication title
Frontiers in Marine ScienceVolume
6Issue
JULArticle number
383Number
383Pagination
1-16ISSN
2296-7745Department/School
Institute for Marine and Antarctic StudiesPublisher
Frontiers Research FoundationPlace of publication
SwitzerlandRights statement
Copyright 2019 Woodworth-Jefcoats, Blanchard and Drazen. This is an openaccess article distributed under the terms of the Creative Commons Attribution License (CC BY)Repository Status
- Open