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| Bauer, Robert Klaus; Stepputtis, Daniel; Graewe, Ulf; Zimmermann, Christopher; Hammer, Cornelius. |
| The investigation of larval dispersal and retention, their variability and dependence on wind conditions, has become a major topic in fisheries research owing to potential effects on stock recruitment and stock structuring. The present study quantifies the wind-induced variability of larval retention of herring in a highly productive coastal lagoon of the Western Baltic Sea. This lagoon, the Greifswalder Bodden, represents the main spawning area of Western Baltic Spring-Spawning Herring, a stock that has recently undergone a continuous decline in recruitment. The study tests whether this decline was related to changes in larval retention, more precisely to changes in wind conditions, the main forcing of the lagoon's circulation. To answer this, a model... |
| Tipo: Text |
Palavras-chave: Atmospheric forcing; Baltic Sea; Biophysical modelling; Greifswalder Bodden; Herring; Larval retention; Recruitment; Spring spawners. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00151/26224/24408.pdf |
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| Helmond, Aloysius T.m.; Mortensen, Lars O.; Plet‐hansen, Kristian S.; Ulrich, Clara; Needle, Coby L.; Oesterwind, Daniel; Kindt‐larsen, Lotte; Catchpole, Thomas; Mangi, Stephen; Zimmermann, Christopher; Olesen, Hans Jakob; Bailey, Nick; Bergsson, Heidrikur; Dalskov, Jørgen; Elson, Jon; Hosken, Malo; Peterson, Lisa; Mcelderry, Howard; Ruiz, Jon; Pierre, Johanna P; Dykstra, Claude; Jaap Poos, Jan. |
| Since the beginning of the 21st century, electronic monitoring (EM) has emerged as a cost‐efficient supplement to existing catch monitoring programmes in fisheries. An EM system consists of various activity sensors and cameras positioned on vessels to remotely record fishing activity and catches. The first objective of this review was to describe the state of play of EM in fisheries worldwide and to present the insights gained on this technology based on 100 EM trials and 12 fully implemented programmes. Despite its advantages, and its global use for monitoring, progresses in implementation in some important fishing regions are slow. Within this context, the second objective was to discuss more specifically the European experiences gained through 16... |
| Tipo: Text |
Palavras-chave: Catch documentation; Discard monitoring; Electronic monitoring; Fully documented fisheries; Video-based monitoring. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00591/70331/68384.pdf |
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