Academic Journal
SEAwise Report on changes in bycatch of fish, seabirds, reptiles and mammals in response to spatial management
| Title: | SEAwise Report on changes in bycatch of fish, seabirds, reptiles and mammals in response to spatial management |
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| Authors: | Amaia Astarloa, Francois Bastardie, Luke Batts, Logan Binch, Isabella Bitetto, Joanna K. Bluemel, Pierluigi Carbonara, Archontia Chatzispyrou, Elena Couce, Nikolaos Fotiadis, Isabel García-Barón, Stefanos Kavadas, Evgenia Lefkaditou, Maite Louzao, Irida Maina, Cosmidano Neglia, J.J., David Reid, Giovanni Romagnonia, Maria-Teresa Spedicato, Karen van de Wolfshaar, Celia Vassilopoulou, Walter Zupa, Anna Rindorf |
| Publication Year: | 2025 |
| Collection: | Technical University of Denmark (DTU): Fighsare |
| Subject Terms: | Conservation and biodiversity, Environmental assessment and monitoring, Environmental management, Fisheries, bycatch, closed areas, mitigation, modelling |
| Description: | The SEAwise project works to deliver a fully operational tool that will allow fishers, managers, and policy makers to easily apply Ecosystem Based Fisheries Management. Bycatch of protected, endangered and threatened (PET) species is a key issue in the implementation of ecosystem-based fisheries management (EBFM). A suggested measure to reduce these is area and temporal closures, but the efficiency of these remains unclear, as spatial closures, rather than reducing total fishing effort, simply redistribute effort away from some areas/times while concentrating it in others. In this context, this SEAwise report evaluates the effects of applying different spatial management measures (i.e., fishing restrictions) on the bycatch of PET species. Restricting fishing activities can lead to bycatch reduction -if the area restricted hosts the species of interest-, to a bycatch increase -if the effort is redistributed to areas with high abundance of the species of interest- or produce no change. To answer that question, this report assesses the effect of this effort displacement by comparing the situation in relation to bycatch on the base scenario (current measures in place) with that on multiple scenarios hosting different fishing restrictions. By these means, this work aims to evaluate how effective are the multiple management measures tested here for reducing the bycatch of PET species. Management scenarios as well as fishing effort displacement were developed and modelled under task 5.5 (Bastardie et al. 2023), and used in this study to estimate potential changes in bycatch. These changes were mostly evaluated using the Productivity-Susceptibility Analysis (PSA), which is a semi-quantitative approach that evaluates bycatch in terms of risk using fishing effort and species distribution as the necessary data for performing more quantitative assessments were not available. Changes in bycatch risk using PSA were reported for 11 fish species, 4 cetaceans and 1 seabird. Cetaceans were assessed in the Bay of Biscay and Irish ... |
| Document Type: | text |
| Language: | unknown |
| Relation: | https://figshare.com/articles/online_resource/SEAwise_Report_on_changes_in_bycatch_of_fish_seabirds_reptiles_and_mammals_in_response_to_spatial_management/28078955 |
| DOI: | 10.11583/dtu.28078955.v1 |
| Availability: | https://doi.org/10.11583/dtu.28078955.v1 https://figshare.com/articles/online_resource/SEAwise_Report_on_changes_in_bycatch_of_fish_seabirds_reptiles_and_mammals_in_response_to_spatial_management/28078955 |
| Rights: | CC BY 4.0 |
| Accession Number: | edsbas.7F765CF0 |
| Database: | BASE |
| DOI: | 10.11583/dtu.28078955.v1 |
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