Journal article
Designing spawning closures can be complicated: Experience from cod in the Baltic Sea
National Institute of Aquatic Resources, Technical University of Denmark1
Section for Monitoring and Data, National Institute of Aquatic Resources, Technical University of Denmark2
Johann Heinrich von Thunen Institute3
Section for Ecosystem based Marine Management, National Institute of Aquatic Resources, Technical University of Denmark4
Helmholtz Centre for Ocean Research Kiel5
Swedish University of Agricultural Sciences6
Section for Marine Living Resources, National Institute of Aquatic Resources, Technical University of Denmark7
Section for Oceans and Arctic, National Institute of Aquatic Resources, Technical University of Denmark8
Institute Management, National Institute of Aquatic Resources, Technical University of Denmark9
National Marine Fisheries Research Institute10
Institute of Food Safety Animal Health and Environment11
...and 1 moreFisheries management measures often include spatio-temporal closures during the spawning period of the fish with an overarching aim of improving the stock status. The different mechanisms how a spawning closure potentially can influence the stock are often not explicitly considered when designing such closures.
In this paper, we review and synthesize the available data and knowledge on potential effects of the implemented spawning closures on cod in the Baltic Sea. The Baltic cod example represents a relatively data rich case, which allows demonstrating how a closure might affect different parameters of stock status via different mechanisms, including potential unintended negative effects.
We conclude that designing relatively small area closures appropriately is highly complex and data demanding, and may involve tradeoffs between positive and negative impacts on the stock. Seasonal closures covering most of the stock distribution during the spawning time are more robust to data limitations, and less likely to be counterproductive if suboptimally designed
Language: | English |
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Year: | 2019 |
Pages: | 129-136 |
ISSN: | 1873524x and 09645691 |
Types: | Journal article |
DOI: | 10.1016/j.ocecoaman.2018.12.018 |
ORCIDs: | Hüssy, Karin , Eero, Margit , Huwer, Bastian , Köster, Friedrich W. and Storr-Paulsen, Marie |
Baltic cod Fisheries management Recrutiment SDG 14 - Life Below Water Spawning closure Stock structure