Harvested fish stocks in a changing environment

Durant, Joël M.; Ottersen, Geir; Stenseth, Nils Chr.

doi:10.3354/meps10314

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…Moreover, the presence of cod seems to limit the eastward expansion of the haddock. Note that the Barents Sea cod abundance has peaked in recent years, which is linked to climate warming, while the North Sea cod abundance was high in the earlier years of the time series and was reduced largely due to the same climate warming in conjunction with high rates of fishery harvesting (Durant et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Predatory walls may impair climate warming‐associated population expansion

Durant

Holt

Ono

et al. 2023

Ecology

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Climate change has a profound impact on species distribution and abundance globally, as well as local diversity, which affects ecosystem functioning. In particular, changes in population distribution and abundance may lead to changes in trophic interactions. Although species can often shift their spatial distribution when suitable habitats are available, it has been suggested that predator presence can be a constraint on climate‐related distribution shifts. We test this using two well‐studied and data‐rich marine environments. Focusing on a pair of sympatric fishes, Atlantic haddock Melanogrammus aeglefinus and cod Gadus morhua, we study the effect of the presence and abundance of the latter on the former distribution. We found that the distribution of cod and increased abundance may limit the expansion of haddock to new areas and could consequently buffer ecosystem changes due to climate change. Though marine species may track the rate and direction of climate shifts, our results demonstrate that the presence of predators may limit their expansion to thermally suitable habitats. By integrating climatic and ecological data at scales that can resolve predator–prey relationships, this analysis demonstrates the usefulness of considering trophic interactions to gain a more comprehensive understanding and to mitigate the effects of climate change on species distributions.

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Section: Discussionmentioning

confidence: 99%

Predatory walls may impair climate warming‐associated population expansion

Durant

Holt

Ono

et al. 2023

Ecology

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“…Two of the main issues that have been the subject of recent research on sub-Arctic stocks are impacts on recruitment and spatial dynamics [41]. An analysis of 38 North Atlantic stocks used linear and non-linear stationary and non-stationary models [42].…”

Section: Recruitmentmentioning

confidence: 99%

Improving the Reliability of Fishery Predictions Under Climate Change

Brander

2015

Curr Clim Change Rep

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The increasing number of publications assessing impacts of climate change on marine ecosystems and fisheries attests to rising scientific and public interest. A selection of recent papers, dealing more with biological than social and economic aspects, is reviewed here, with particular attention to the reliability of projections of climate impacts on future fishery yields. The 2014 Intergovernmental Panel on Climate Change (IPCC) report expresses high confidence in projections that mid-and high-latitude fish catch potential will increase by 2050 and medium confidence that low-latitude catch potential will decline. These levels of confidence seem unwarranted, since many processes are either absent from or poorly represented in the models used, data are sparse and, unlike terrestrial crop projections, there are no controlled experiments. This review discusses methodological issues that affect our understanding of climate impacts, such as how to improve coupled models from physics to fish and how to strengthen confidence in analysis of time series.

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Harvested fish stocks in a changing environment

Cited by 2 publications

References 18 publications

Predatory walls may impair climate warming‐associated population expansion

Predatory walls may impair climate warming‐associated population expansion

Improving the Reliability of Fishery Predictions Under Climate Change

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