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Article
Open AccessAge and sex-specific foraging movements and energetics in an endangered monomorphic seabird
Senescence is the irreversible decline in physiological functioning and survival with age. While this phenomenon has been studied in a range of different taxa, including seabirds, it has seldom been assessed f...
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Article
Open AccessLocal purse-seine fishers’ economic losses owing to endangered seabird conservation measures – perceptions and reality
The likelihood of success of a marine protected area (MPA) is strongly dependent on stakeholders’ support. A concern often raised by local fishers is their lack of involvement in the design or management of a ...
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Article
Open AccessImportant marine areas for endangered African penguins before and after the crucial stage of moulting
The population of the Endangered African penguin Spheniscus demersus has decreased by > 65% in the last 20 years. A major driver of this decrease has been the reduced availability of their principal prey, sardine...
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Article
Open AccessSeascapes of fear and competition shape regional seabird movement ecology
Fear effects of predators on prey distributions are seldom considered in marine environments, especially over large spatial scales and in conservation contexts. To fill these major gaps, we tested the Seascape...
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Reference Work Entry In depth
Penguins: Behavioral Ecology and Vocal Communication
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Article
Open AccessForaging movements of breeding Kelp Gulls in South Africa
Kelp Gulls Larus dominicanus are one of the most abundant gulls in the Southern Hemisphere and can play an important role in their ecosystem. Understanding their foraging ecology is therefore important, especiall...
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Living Reference Work Entry In depth
Penguins: Behavioural Ecology and Vocal Communication
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Article
Open AccessAvoidance of seismic survey activities by penguins
Seismic surveys in search for oil or gas under the seabed, produce the most intense man-made ocean noise with known impacts on invertebrates, fish and marine mammals. No evidence to date exists, however, about...
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Article
Erratum to: Starving seabirds: unprofitable foraging and its fitness consequences in Cape gannets competing with fisheries in the Benguela upwelling ecosystem
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Article
Starving seabirds: unprofitable foraging and its fitness consequences in Cape gannets competing with fisheries in the Benguela upwelling ecosystem
Fisheries are often accused of starving vulnerable seabirds, yet evidence for this claim is scarce. Foraging energetics may provide efficient, short-term indicators of the fitness status of seabirds competing...
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Article
Contrasting population trends at seabirds colonies: is food limitation a factor in Norway?
Norwegian Northern Gannet Morus bassanus populations exhibit contrasting trends on a regional scale, with several colony extinctions having occurred in recent decades. In an attempt to understand the ecological d...
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Article
GPS and time-depth loggers reveal underwater foraging plasticity in a flying diver, the Cape Cormorant
Knowledge on how divers exploit the water column vertically in relation to water depth is crucial to our understanding of their ecology and to their subsequent conservation. However, information is still lacki...
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Article
Diving patterns of female macaroni penguins breeding on Marion Island, South Africa
Despite the large biomass of macaroni penguins Eudyptes chrysolophus in the Southern Ocean, their feeding ecology is poorly known at some important breeding localities. We investigated the diving behaviour and di...
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Article
Behavioural inertia places a top marine predator at risk from environmental change in the Benguela upwelling system
In variable environments, organisms are bound to track environmental changes if they are to survive. Most marine mammals and seabirds are colonial, central-place foragers with long-term breeding-site fidelity....
