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Article
Open AccessForaging dive frequency predicts body mass gain in the Adélie penguin
Quantifying food intake in wild animals is crucial to many ecological and evolutionary questions, yet it can be very challenging, especially in the marine environment. Because foraging behavior can be inferred...
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Article
Maintenance of nest quality in Adélie penguins Pygoscelis adeliae: an additional benefit to life in the center
In colonial seabirds, differences in the nesting or fledging success have been associated with differences in nest position within the breeding aggregation (subcolony): less successful nests are located on the...
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Article
Open AccessThe influence of subcolony-scale nesting habitat on the reproductive success of Adélie penguins
Group-size variation is common in colonially breeding species, including seabirds, whose breeding colonies can vary in size by several orders of magnitude. Seabirds are some of the most threatened marine taxa ...
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Article
Open AccessDrivers of concentrated predation in an Antarctic marginal-ice-zone food web
Predators impact preyscapes (3-D distribution of forage species) by consuming prey according to their abilities or by altering prey behavior as they avoid being consumed. We elucidate prey (Antarctic silverfish[P...
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Article
Tracking of marine predators to protect Southern Ocean ecosystems
Southern Ocean ecosystems are under pressure from resource exploitation and climate change1,2. Mitigation requires the identification and protection of Areas of Ecological Significance (AESs), which have so far n...
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Article
Open AccessThe retrospective analysis of Antarctic tracking data project
The Retrospective Analysis of Antarctic Tracking Data (RAATD) is a Scientific Committee for Antarctic Research project led jointly by the Expert Groups on Birds and Marine Mammals and Antarctic Biodiversity In...
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Article
Open AccessEvidence of age-related improvement in the foraging efficiency of Adélie penguins
Age variation in reproductive performance is well-documented but the mechanisms underlying this variation remain unclear. Foraging efficiency is likely to be a key source of demographic variation as it determi...
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Article
Global phenological insensitivity to shifting ocean temperatures among seabirds
Reproductive timing in many taxa plays a key role in determining breeding productivity 1 , and is often sensitive to climatic conditions 2 . Cur...
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Article
Spatio-temporal occurrence patterns of cetaceans near Ross Island, Antarctica, 2002–2015: implications for food web dynamics
The Ross Sea pelagic food web is closely coupled, with the foraging among abundant upper level species affecting the foraging of one another. To investigate the roles cetaceans may have in such interspecific i...
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Article
Modeling the relationship of Antarctic minke whales to major ocean boundaries
The population size of Antarctic minke whales Balaenoptera bonaerensis has been changing simultaneously with profound changes in the physics, i.e., mesopredator habitat features, of the Southern Ocean. Although t...
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Article
Non-consumptive factors affecting foraging patterns in Antarctic penguins: a review and synthesis
Recent research has clearly shown that the fear of predation, i.e. aversion to taking risks, among mesopredators or grazers, and not merely flight from an apex predator to avoid predation, is an important aspe...
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Vulnerability and Impacts on Natural Resources
Climate change-mediated impacts originating from terrestrial and marine sources interact at the coast to influence coastal habitats (Nicholls et al., 2007; Rosenzweig et al., 2007; Figure 3-1; Table 3-1). On t...
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Article
Assessing the impact of local habitat variables and landscape context on riparian birds in agricultural, urbanized, and native landscapes
Large tracts of natural habitat are being replaced by agriculture and urban sprawl in Mediterranean regions worldwide. We have limited knowledge about the effects of human activities on native species in these...
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Article
Diet and foraging effort of Adélie penguins in relation to pack-ice conditions in the southern Ross Sea
We investigated the diet and aspects of foraging effort among Adélie penguins (Pygoscelis adeliae) breeding at three colonies on Ross Island, in the southwestern Ross Sea – Capes Royds, Bird and Crozier – during ...
