Prémio Cagarro D'Ouro  |  Artigos Científicos  |  Parceiros  |  Notícias  |  RESOURCES IN ENGLISH  |  Campanhas Cagarro noutras latitudes
<Agosto de 2020>
segterquaquisexsábdom
272829303112
3456789
10111213141516
17181920212223
24252627282930
31123456
Zonas
 

Açores
Corvo
Faial
Flores
Graciosa
Pico
Santa Maria
São Jorge
São Miguel
Terceira

 

Atualizado em: 22-11-2019



 

Zeca Garro ... saber mais

Feed de RSS
  icon de rss Ver o feed  
Year-round distribution suggests spatial segregation of Cory's shearwaters, based on individual experience

Ano: 2015

Autores: Rogério V. Missagia; Jaime A. Ramos; Maite Louzao; Karine Delord; Henri Weimerskirch; Vitor H. Paiva

Publicação:  Mar Biol doi 10.1007/s00227-015-2762-1


Resumo

Recent studies have shown that pelagic seabirds with little breeding experience are wide ranging individuals exploring different foraging grounds and occupying generally more pelagic habitats than more experienced birds. This study compared the spatial dynamic of the year-round distribution and behaviour between two different population components: experienced (Exp; >2 years of successful breeding) and inexperienced (Inexp; ≤2 successful years) Cory’s shearwaters (Calonectris borealis) individuals from Berlenga Island, offshore the Portuguese coast. Our aim was to verify the occurrence of variations in the at-sea activity, foraging habitats and isotopic niches of Exp (N = 11)
and Inexp (N = 11) individuals, during their breeding and non-breeding phases. Our results confirmed differences in the migratory routes and foraging grounds during the annual cycle between these two population components: Inexp birds exhibited a more pelagic behaviour than Exp birds, with extensive migratory routes, marked by several stopovers, and a higher number of non-breeding areas. Exp individuals migrated through shorter routes, and wintered in fewer locations. Exp individuals foraged on coastal, shallow and cold water areas and showed higher carbon and nitrogen isotopic values, while Inexp birds foraged more on pelagic, windy and frontal zones and exhibited lower
carbon and nitrogen isotopic values. Our results suggest that experience plays a relevant role in explaining the spatial distribution and behaviour of pelagic seabirds such as Cory’s shearwaters. Future research with larger sample sizes should focus on comparing the behaviour of juvenile, immature, first-time breeders and breeders with increasing experience and age.

Para aceder ao artigo clique aqui!

Calendário de Eventos
 
<Agosto de 2020>
segterquaquisexsábdom
272829303112
3456789
10111213141516
17181920212223
24252627282930
31123456
Pesquisa
 
 
<Agosto de 2020>
segterquaquisexsábdom
272829303112
3456789
10111213141516
17181920212223
24252627282930
31123456
Últimos conteúdos
 
Salvo cagarro com 7 anos na ilha do Corv...
Alunos da Escola da Maia sensibilizados ...
Brigadas SOS Cagarro arrancam no Corvo c...
Abertura Campanha SOS Cagarro 2019
 
 
 
“O Cagarro”
“Cagarro, cagarrinho”
“Aves vindas do mar”
"DJ Cagarro Master"
 
 
 



 

 

INÍCIOCAMPANHAO CAGARROINICIATIVASBRIGADAS CIENTÍFICASRECURSOSRELATÓRIOSCONTACTOSLUMINAVES

©2004-2020 Presidência do Governo dos Açores
Todos os Direitos Reservados

Portal do Governo dos Açores
Governo Regional dos Açores  UE