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Fisheries measures protect European seabass groups with distinct habitat use differently Goossens, J.; Villagra, D.; De Putter, G.; Verhelst, P.; Torreele, E.; Moens, T.; Reubens, J. (2023). Fisheries measures protect European seabass groups with distinct habitat use differently. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 80(7): 1899-1910. https://dx.doi.org/10.1093/icesjms/fsad116 In: ICES Journal of Marine Science. Academic Press: London. ISSN 1054-3139; e-ISSN 1095-9289 Is gerelateerd aan: Flanders Marine Institute (VLIZ) (2024). Multipurpose seabed moorings: Developed for coastal dynamic seas. Oceanography Suppl. : In prep., meer

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Beschikbaar in	Auteurs
VLIZ: Open access 392799 [ download pdf ]

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Trefwoorden

Fisheries management Measurement > Telemetry > Acoustic telemetry Dicentrarchus labrax (Linnaeus, 1758) [WoRMS] Marien/Kust

Author keywords

movement ecology, residency, site fidelity, network analysis

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Auteurs		Top
Goossens, J. Villagra, D. De Putter, G. Verhelst, P.	Torreele, E. Moens, T. Reubens, J.

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Abstract

We investigated the movements of European seabass, Dicentrarchus labrax, to understand habitat use and connectivity to evaluate how individual seabass are protected by the spatiotemporal fisheries restrictions in place. We tagged seabass with acoustic transmitters in a study area in the Port of Zeebrugge (Belgium) in the southern North Sea. The 370,200 detections of 57 seabass in the study area revealed high residency in the period from late March–May to September–November, as well as high site fidelity (70.7%). Whereas the majority of seabass left the area in winter, 13 seabass stayed in the harbour experiencing temperatures as low as 2.8°C. Two groups of seabass were identified having different core movement areas in the inner and outer harbours, although movement between the two areas was possible. The distinct differences in habitat use between these groups resulted in a significantly different level of exposure to fisheries under the same policy framework. By quantifying the level of protection of seabass, based on the spatiotemporal fisheries management in place, our study underlines the importance of taking into account movement behaviour when evaluating conservation measures.

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