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Adding to the mix – Challenges of mixed‐fisheries management in the North Sea under climate change and technical interactions
Kühn, B.; Kempf, A.; Brunel, T.; Cole, H.; Mathis, M.; Sys, K.; Trijoulet, V.; Vermard, Y.; Taylor, M. (2023). Adding to the mix – Challenges of mixed‐fisheries management in the North Sea under climate change and technical interactions. Fish. Manage. Ecol. 30(4): 360-377. https://dx.doi.org/10.1111/fme.12629
In: Fisheries Management and Ecology. Blackwel Science Ltd.: Oxford. ISSN 0969-997X; e-ISSN 1365-2400
|   |
| Trefwoorden |
Gadus morhua Linnaeus, 1758 [WoRMS]; Merlangius merlangus (Linnaeus, 1758) [WoRMS]; Pollachius virens (Linnaeus, 1758) [WoRMS]
Marien/Kust |
| Author keywords |
bioeconomic model;climate change;EU landing obligation;FLBEIA;Pretty Good Yield;SPAWNING STOCK;FISH;RECRUITMENT;OCEAN;ADVICE;VARIABILITY;PERFORMANCE;STRATEGY;PLANKTON;IMPACTS |
| Auteurs | | Top |
- Kühn, B.
- Kempf, A.
- Brunel, T.
|
- Cole, H.
- Mathis, M.
- Sys, K.
|
- Trijoulet, V.
- Vermard, Y.
- Taylor, M.
|
| Abstract |
Technical interactions (multiple fleets fishing multiple species with various gears, as either target or bycatch), bycatch regulations through a landing obligation, and biological and economic effects of climate change, affecting fisheries yield and profits, provide a challenge for demersal mixed fisheries of the North Sea. A multi-stock, multi-fleet, bioeconomic model was used to understand management options under these combined influences. Scenarios considered climate change effects on recruitment of three main gadoid stocks (cod – Gadus morhua, saithe – Pollachius virens, whiting – Merlangius merlangus), possible future developments of fuel and fish prices, and strict implementation of a landing obligation. The latter leads to decreased yield and profits in the short term due to increased choke effects, mainly of North Sea cod, being influenced by climate-induced productivity changes. Allowing fishing above FMSY, but within sustainable limits, or limiting year-to-year quota changes, could help buffer initial losses at the expense of decreased profits in the mid- to long-term. Economic performance of individual fleets was linked to their main target's stock status, cost structure, and fuel and fish prices. The results highlight a need to consider both biological and economic consequences of climate change in the management of mixed fisheries. |
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