Seasonal variation in seabird abundance and bycatch at artisanal bottom-set net fisheries in the southern Iberian Atlantic coast

Authors
Pereira, J.M., Ramos, J.A., Almeida, A., Marçalo, A., Carvalho, F., Fagundes, I., Gonçalves, J.M., Frade, M., Oliveira, N., Nascimento, T. and Paiva, V.H
Year
Journal/Publisher Name
Ocean & Coastal Management
Volume (Issue #)
267
Page #s
11
Contact information
Jorge M. Pereira, University of Coimbra, MARE - Marine and Environmental Sciences Centre, Portugal- jorge.pereira@uc.pt
Summary

This study utilized onboard observations and fishermen interviews to investigate seabird seasonal abundance and interactions with artisanal bottom-set net fisheries off the southern-eastern coast of mainland Portugal between 2020 and 2022. 25 species of seabirds were recorded as bycatch, with lesser black-backed and Yellow-legged gulls
(Larus fuscus and Larus michahellis) the most abundant. Great shearwaters (Ardenna gravis) were caught more frequently in trammel nets during autumn, suggesting effects of both season and gear type. Fishermen interviews identified Northern gannets and Great cormorants (Phalacrocorax carbo)
as the most frequently bycaught species,

 

 

Link
https://www.sciencedirect.com/science/article/pii/S096456912500122X

Field Studies

Seasonal variation in seabird abundance and bycatch at artisanal bottom-set net fisheries in the southern Iberian Atlantic coast

Study Type
Field study in the wild
Location
Portugal
Target catch
fish spp.
Effect on bycatch species
variation by season and gear type affected seabird species differently
Effect on target catch
not assessed
Bycatch species
Seabirds
Fishing Gear
Gillnets