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Location	Gear	Catch	Technique	Bycatch species	Type	Results
Portugal	Gillnets	fish spp.		Seabirds	Field study in the wild	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, Effect on Bycatch: variation by season and gear type affected seabird species differently Reference: 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, 2025 , Seasonal variation in seabird abundance and bycatch at artisanal bottom-set net fisheries in the southern Iberian Atlantic coast

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