Disappearing fish: grey seal depredation in a Baltic net fishery (supporting dataset)
Grey seals ( Halichoerus grypus ) in the Baltic Sea commonly attempt to steal fish captured in net fisheries. Seal depredation reduces economic yields for small-scale net fishers in a region already highly impacted by the collapse of important fish stocks. Visible damages in looted nets consist of i...
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ftdtufig:oai:figshare.com:article/25911484 2024-06-23T07:51:05+00:00 Disappearing fish: grey seal depredation in a Baltic net fishery (supporting dataset) Gildas Glemarec 2024-05-28T13:20:17Z https://doi.org/10.11583/dtu.25911484.v1 https://figshare.com/articles/dataset/_b_Disappearing_fish_grey_seal_depredation_in_a_Baltic_net_fishery_b_supporting_dataset_/25911484 unknown doi:10.11583/dtu.25911484.v1 https://figshare.com/articles/dataset/_b_Disappearing_fish_grey_seal_depredation_in_a_Baltic_net_fishery_b_supporting_dataset_/25911484 CC BY 4.0 Fisheries management Fisheries sciences not elsewhere classified Wildlife and habitat management grey seal (Halichoerus grypus) depredation rate gillnet Baltic Sea Baltic Cod Dataset 2024 ftdtufig https://doi.org/10.11583/dtu.25911484.v1 2024-06-03T23:32:34Z Grey seals ( Halichoerus grypus ) in the Baltic Sea commonly attempt to steal fish captured in net fisheries. Seal depredation reduces economic yields for small-scale net fishers in a region already highly impacted by the collapse of important fish stocks. Visible damages in looted nets consist of injured fish with bite marks, or holes in the gear, but additional losses from seals eating entire fish without leaving a trace can often remain unnoticed. In this study, we estimated the daily rates of injured and of stolen fish in a commercial gillnet fishery operating off coast of Bornholm in the Central Baltic Sea in 2021-2022. Our results show that the Atlantic cod ( Gadus morhua ) is generally preferred over other target species [here, European plaice ( Pleuronectes platessa ), European flounder ( Platichthys flesus ), and turbot ( Scophthalmus maximus )]. Although the observed ratio of 5.65 cods disappearing for each cod retrieved with seal bite marks is similar to a study from the 2000’s, we show that average daily cod disappearance rates are linked to the duration a gear is left soaking in the same location. Dataset atlantic cod Gadus morhua Scophthalmus maximus Turbot Technical University of Denmark (DTU): Fighsare |
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Open Polar |
collection |
Technical University of Denmark (DTU): Fighsare |
op_collection_id |
ftdtufig |
language |
unknown |
topic |
Fisheries management Fisheries sciences not elsewhere classified Wildlife and habitat management grey seal (Halichoerus grypus) depredation rate gillnet Baltic Sea Baltic Cod |
spellingShingle |
Fisheries management Fisheries sciences not elsewhere classified Wildlife and habitat management grey seal (Halichoerus grypus) depredation rate gillnet Baltic Sea Baltic Cod Gildas Glemarec Disappearing fish: grey seal depredation in a Baltic net fishery (supporting dataset) |
topic_facet |
Fisheries management Fisheries sciences not elsewhere classified Wildlife and habitat management grey seal (Halichoerus grypus) depredation rate gillnet Baltic Sea Baltic Cod |
description |
Grey seals ( Halichoerus grypus ) in the Baltic Sea commonly attempt to steal fish captured in net fisheries. Seal depredation reduces economic yields for small-scale net fishers in a region already highly impacted by the collapse of important fish stocks. Visible damages in looted nets consist of injured fish with bite marks, or holes in the gear, but additional losses from seals eating entire fish without leaving a trace can often remain unnoticed. In this study, we estimated the daily rates of injured and of stolen fish in a commercial gillnet fishery operating off coast of Bornholm in the Central Baltic Sea in 2021-2022. Our results show that the Atlantic cod ( Gadus morhua ) is generally preferred over other target species [here, European plaice ( Pleuronectes platessa ), European flounder ( Platichthys flesus ), and turbot ( Scophthalmus maximus )]. Although the observed ratio of 5.65 cods disappearing for each cod retrieved with seal bite marks is similar to a study from the 2000’s, we show that average daily cod disappearance rates are linked to the duration a gear is left soaking in the same location. |
format |
Dataset |
author |
Gildas Glemarec |
author_facet |
Gildas Glemarec |
author_sort |
Gildas Glemarec |
title |
Disappearing fish: grey seal depredation in a Baltic net fishery (supporting dataset) |
title_short |
Disappearing fish: grey seal depredation in a Baltic net fishery (supporting dataset) |
title_full |
Disappearing fish: grey seal depredation in a Baltic net fishery (supporting dataset) |
title_fullStr |
Disappearing fish: grey seal depredation in a Baltic net fishery (supporting dataset) |
title_full_unstemmed |
Disappearing fish: grey seal depredation in a Baltic net fishery (supporting dataset) |
title_sort |
disappearing fish: grey seal depredation in a baltic net fishery (supporting dataset) |
publishDate |
2024 |
url |
https://doi.org/10.11583/dtu.25911484.v1 https://figshare.com/articles/dataset/_b_Disappearing_fish_grey_seal_depredation_in_a_Baltic_net_fishery_b_supporting_dataset_/25911484 |
genre |
atlantic cod Gadus morhua Scophthalmus maximus Turbot |
genre_facet |
atlantic cod Gadus morhua Scophthalmus maximus Turbot |
op_relation |
doi:10.11583/dtu.25911484.v1 https://figshare.com/articles/dataset/_b_Disappearing_fish_grey_seal_depredation_in_a_Baltic_net_fishery_b_supporting_dataset_/25911484 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.11583/dtu.25911484.v1 |
_version_ |
1802642081203617792 |