ArticleScientific reports2016
Climate-driven sympatry may not lead to foraging competition between congeneric top-predators.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Interactions between vertical migration and local oceanography drive microplastic exposure for Antarctic krill.Scientific reports · 2026Article
- Variability in prey field structure drives inter-annual differences in prey encounter by a marine predator, the little penguin.Royal Society open science · 2022Article
- Drivers of concentrated predation in an Antarctic marginal-ice-zone food web.Scientific reports · 2020Article
- The interaction between island geomorphology and environmental parameters drives Adélie penguin breeding phenology on neighboring islands near Palmer Station, Antarctica.Ecology and evolution · 2019Article
- Niche partitioning of sympatric penguins by leapfrog foraging appears to be resilient to climate change.The Journal of animal ecology · 2019Article
- Central place foragers select ocean surface convergent features despite differing foraging strategies.Scientific reports · 2019Article
- Spatial niche partitioning may promote coexistence ofEcology and evolution · 2018Article
- Behaviourally mediated predation avoidance in penguin prey:Royal Society open science · 2018Article
- Variability in summer surface residence time within a West Antarctic Peninsula biological hotspot.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2018Article
- Temporal variation in trophic relationships among three congeneric penguin species breeding in sympatry.Ecology and evolution · 2018Article
- Sexual and individual foraging segregation in Gentoo penguins Pygoscelis papua from the Southern Ocean during an abnormal winter.PloS one · 2017Article
- Projected asymmetric response of Adélie penguins to Antarctic climate change.Scientific reports · 2016Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Climate-driven sympatry may lead to competition for food resources between species. Rapid warming in the West Antarctic Peninsula (WAP) is coincident with increasing gentoo penguin and decreasing Adélie penguin populations, suggesting that competition for food may exacerbate the Adélie penguin decline. On fine scales, we tested for foraging competition between these species during the chick-rearing period by comparing their foraging behaviors with the distribution of their prey, Antarctic krill. We detected krill aggregations within the horizontal and vertical foraging ranges of Adélie and gentoo penguins, and found that krill selected for habitats that balance the need to consume food and avoid predation. In overlapping Adélie and gentoo penguin foraging areas, four gentoo penguins switched foraging behavior by foraging at deeper depths, a strategy which limits competition with Adélie penguins. This suggests that climate-driven sympatry does not necessarily result in competitive exclusion of Adélie penguins by gentoo penguins. Contrary to a recent theory, which suggests that increased competition for krill is one of the major drivers of Adélie penguin population declines, we suggest that declines in Adélie penguins along the WAP are more likely due to direct and indirect climate impacts on their life histories.
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