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Seabirds foraging at floating seaweeds in the Northeast Atlantic
Vandendriessche, S.; Stienen, E.W.M.; Vincx, M.; Degraer, S. (2007). Seabirds foraging at floating seaweeds in the Northeast Atlantic. Ardea 95(2): 289-298. https://dx.doi.org/10.5253/078.095.0211
In: Ardea. Nederlandse Ornithologische Unie: Arnhem & Leiden. ISSN 0373-2266; e-ISSN 2213-1175, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    AE, North Atlantic
    Aquatic organisms > Marine organisms > Aquatic birds > Marine birds
    Behaviour > Feeding behaviour
    Behaviour > Feeding behaviour > Foraging behaviour
    Eukaryotes > Animals > Chordata > Vertebrates > Birds > Aquatic animals > Sea birds
    Floating
    Flora > Weeds > Marine organisms > Seaweeds
    Organisms > Aquatic organisms > Plants > Aquatic plants > Seaweeds
    Zanzibar
    Alca torda Linnaeus, 1758 [WoRMS]; Fratercula arctica (Linnaeus, 1758) [WoRMS]; Melanitta nigra (Linnaeus, 1758) [WoRMS]; Mergus serrator Linnaeus, 1758 [WoRMS]; Phalacrocorax carbo (Linnaeus, 1758) [WoRMS]; Somateria mollissima (Linnaeus, 1758) [WoRMS]; Sula bassana (Linnaeus, 1758) [WoRMS]; Uria aalge (Pontoppidan, 1763) [WoRMS]
    Atlantic [Marine Regions]; Noord Atlantisch [Marine Regions]
    Marien/Kust
Author keywords
    seabirds; floating seaweed; Northeast Atlantic; feeding strategy
Auteurs  Top 
  • Vandendriessche, S., meer
  • Stienen, E.W.M.
  • Vincx, M., meer
  • Degraer, S., meer
Abstract
    The influence of floating seaweed patches on the distribution and behaviour of seabirds was investigated using the European Seabirds At Sea database (ESAS). The percentage of observations that seabirds were observed with floating seaweed differed among species, depending on the mode of foraging. The results indicate that surface feeding species that make shallow dives (terns and Red-breasted Mergansers Mergus serrator) benefit most from the presence of floating seaweeds and their associated macro- and ichthyofauna. Species hunting for pelagic and bottom-dwelling prey (divers, Guillemots Uria aalge, Razorbills Alca torda, Puffins Fratercula arctica, Gannets Sula bassana and Cormorants Phalacrocorax carbo), and especially benthos feeders (Common Scoters Melanitta nigra and Eiders Somateria mollissima) were frequently seen in association with floating seaweeds, while opportunists and scavengers like gulls and skuas were recorded on few occasions. Petrels and shearwaters (surface-seizing, pursuit-plunging, pursuit-diving) were seldomly seen in association with floating seaweeds. The most common behavioural activities of the birds associated with floating seaweed were found to be surface pecking, actively searching, and pursuit plunging.
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