• Corpus ID: 208611298

Northern Gannets in the North Sea: foraging distribution and feeding techniques around the Bass Rock

@article{Camphuysen2011NorthernGI,
  title={Northern Gannets in the North Sea: foraging distribution and feeding techniques around the Bass Rock},
  author={Kees C J Camphuysen},
  journal={British Birds},
  year={2011}
}
Field observations around the largest Northern Gannet Morus bassanus colony in the North Sea, the Bass Rock, showed that 66% of all Gannets foraged in areas with very low densities of conspecifics, more than 100 km from the colony. When one forager found prey, even distant Gannets responded by joining the finder to obtain a share of the bounty but, because of the low densities of Gannets far from the colony, feeding opportunities were typically exploited by small flocks, with relatively few… 

References

SHOWING 1-10 OF 32 REFERENCES
Foraging ranges, diets and feeding locations of gannets Morus bassanus in the North Sea:evidence from satellite telemetry
TLDR
The results of this study suggest that gannets breeding at the Bass Rock utilize a wide range of species and sizes of prey over a large area of the North Sea, and that they focus their activity on bathymetric features that are probably associated with high primary production.
Distribution and foraging interactions of seabirds and marine mammals in the North Sea: multispecies foraging assemblages and habitat-specific feeding strategies
TLDR
A large-scale, multi-disciplinary study of top-predator distribution patterns and at-sea foraging behaviour was conducted in the northwest North Sea to investigate some of the behavioural mechanisms underlying species-specific population responses, providing new insights into the ways in which marine predators utilize a shared prey resource.
The behaviour of seabirds foraging at fishing boats around Shetland
TLDR
It is suggested that likely changes in fishing practice and seabird population sizes in the immediate future may result in Herring Gulls, Lesser Black-backed GullS and Great Skuas finding feeding on waste around trawlers increasingly difficult, so they may be further displaced by Fulmars, Gannets and Great Black- backed Gulling.
Multi-species feeding associations in North Sea seabirds: jointly exploiting a patchy environment
We studied the foraging distribution and the formation of multi-species feeding associations of seabirds and marine mammals off the British east coast. The local top-predator community comprised c.
Foraging success, kleptoparasitism and feeding techniques in scavenging seabirds: does crime pay?
TLDR
The hypothesis that the most successful species employ particular feeding techniques and/or exhibit the strongest kleptoparasitic abilities could be confirmed to a large extent but not totally.
Evidence of intra-specific competition for food in a pelagic seabird
TLDR
It is shown that the per capita population growth rates of northern gannet Morus bassanus at colonies in Britain and Ireland have declined with increasing population size, and a model is developed which demonstrates that disturbance of fish alone can readily generate conditions under which gannets at larger colonies have to travel further to obtain food.
Congruent shifts in sand eel abundance in western and eastern North Atlantic ecosystems
It has been suggested, on the basis of model simulations and slowly accumulating empirical data, that changes in the structure of marine ecosystems may be caused as much by changes in the trophic
Competition between Fisheries and Seabird Communities
Seabirds at sea in summer in the northwest North Sea Kees (C. J.) Camphuysen
The area off the Scottish east coast and around Orkney and Shetland has previously been identified as the single most important area for seabirds at sea in summer in the North Sea. Both colony
THE REGULATION OF NUMBERS OF TROPICAL OCEANIC BIRDS
TLDR
It is suggested that colonies of tropical oceanic birds deplete the food in the waters round them, and that as the populations increase competition for food becomes more intense, and relatively fewer adults succeed in raising chicks, which would provide a density-dependent control of the output of young and could regulate the numbers of the birds.
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