Prémio Cagarro D'Ouro  |  Artigos Científicos  |  Parceiros  |  Notícias  |  RESOURCES IN ENGLISH  |  Campanhas Cagarro noutras latitudes
<Março de 2024>
segterquaquisexsábdom
26272829123
45678910
11121314151617
18192021222324
25262728293031
1234567
Zonas
 

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

 

Atualizado em: 22-11-2021 
(valor final da campanha de 2021)

 

  

Zeca Garro ... saber mais

Feed de RSS
  icon de rss Ver o feed  
Working the day or the night shift? Foraging schedules of Cory's Shearwaters vary according to marine habitat

Ano: 2012

Autores: Maria P. Dias; José P. Granadeiro; Paulo Catry

Keywords: Foraging behaviour; Seabirds; Diel vertical migration; Sea-surface temperature; Bathymetry

Publicação: Mar Ecol Prog Ser 467(2012): 245-252


Resumo

The diel vertical migration of zooplankton and many other organisms is likely to affect the foraging behaviour of marine predators. Among these, shallow divers, such as many seabirds, are particularly constrained by the surface availability of prey items. We analysed the atsea activity of a surface predator of epipelagic and mesopelagic prey, Cory’s shearwater Calonectris
diomedea, on its several wintering areas (spread throughout the temperate Atlantic Ocean and the Agulhas Current). Individual shearwaters were mainly diurnal when wintering in warmer
and shallower waters of the Benguela, Agulhas and Brazilian Currents, and comparatively more nocturnal in colder and deeper waters of the Central South Atlantic and the Northwest Atlantic.
Nocturnality also correlated positively with bathymetry and negatively with sea-surface temperature within a single wintering area. This is possibly related to the relative availability of epipelagic and mesopelagic prey in different oceanic sectors, and constitutes the first evidence of such flexibility in the daily routines of a top marine predator across broad spatial scales, with clear expression at population and individual levels.

Para aceder ao artigo clique aqui!

Calendário de Eventos
 
<Março de 2024>
segterquaquisexsábdom
26272829123
45678910
11121314151617
18192021222324
25262728293031
1234567
Pesquisa
 
 
<Março de 2024>
segterquaquisexsábdom
26272829123
45678910
11121314151617
18192021222324
25262728293031
1234567
Últimos conteúdos
 
Brigadas Científicas
Campanha
Downloads
 
 
 
“O Cagarro”
“Cagarro, cagarrinho”
“Aves vindas do mar”
"DJ Cagarro Master"
 
 
 



 

 

INÍCIOCAMPANHAO CAGARROINICIATIVASBRIGADAS CIENTÍFICASRECURSOSRELATÓRIOSCONTACTOSLUMINAVES

©2004-2024 Presidência do Governo dos Açores
Todos os Direitos Reservados

Portal do Governo dos Açores
Governo Regional dos Açores  UE