Abstract：
:Pelagic seabirds exhibit plasticity in foraging characteristics in relation to oceanographic conditions. This should be particularly relevant in tropical marine environments where food resources are naturally more unpredictable. We studied how inter-annual variations (2013-2018) in tropical oceanographic conditions (driver of oceanic productivity) can influence the spatial and trophic ecology of Cape Verde shearwater (Calonectris edwardsii) during the breeding season. During years of poor oceanographic conditions around the colony, birds engaged in longer trips to West Africa, showed higher spatial and behavioural consistency, and presented a wider isotopic niche. Opposite patterns were generally found for years of good oceanographic conditions, when birds foraged more on their colony surroundings. New foraging areas off West Africa were highlighted as relevant, especially during years of poor environmental conditions. This study highlights the need for long-term studies to assess variation in foraging areas and foraging decisions by seabird populations.
journal_name
Mar Environ Resjournal_title
Marine environmental researchauthors
Cerveira LR,Ramos JA,Rodrigues I,Almeida N,Araújo PM,Santos ID,Vieira C,Pereira JM,Ceia FR,Geraldes P,Melo T,Paiva VHdoi
10.1016/j.marenvres.2020.105165subject
Has Abstractpub_date
2020-12-01 00:00:00pages
105165eissn
0141-1136issn
1879-0291pii
S0141-1136(20)30688-7journal_volume
162pub_type
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