Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/178
Título: Impact of vagrant predators on the native fauna: a Short-eared Owl (Asio flammeus) preying on Madeiran Storm Petrels (Oceanodroma castro) in the Azores.
Autor: Bried, Joël
Palavras-chave: Coruja-do-nabal
Short-eared Owl
Asio flammeus
Paínho da Madeira
Storm petrels
Oceanodroma castro
Data: 2003
Editora: Universidade dos Açores
Citação: "ARQUIPÉLAGO. Ciências Biológicas e Marinhas". ISSN 0873-4704. Nº 20A (2003): 57-60
Relatório da Série N.º: Ciências Biológicas e Marinhas = Life and Marine Sciences;
Resumo: The impact of introduced predators on the native fauna of oceanic islands has proven to be catastrophic in many cases. In some instances, however, predation is caused by very few individuals arrived without any human assistance. Here, I report on the impact of a vagrant Short-eared Owl on the small population (200 breeding pairs) of cool-season Madeiran Storm Petrels from Praia Islet (0.12 km2), off Graciosa Island, Azores archipelago. The owl fed almost exclusively on storm petrels and killed between one and two individuals every night. The number of prey remains found suggests that it must have been present on the islet ca two weeks before its presence was noticed. Although the Short-eared Owl is a rare vagrant in the Azores, these observations show that a single individual may have a strong impact on a vulnerable population of Madeiran Storm Petrels.
URI: http://hdl.handle.net/10400.3/178
ISSN: 0873-4704
Aparece nas colecções:ARQ - LMS - Número 20A

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