ArticleScientific reports2020
Drivers of concentrated predation in an Antarctic marginal-ice-zone food web.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Dispersal and habitat preference of juvenile emperor penguins-implications for conservation management.Royal Society open science · 2025Article
- Sex-specific recruitment rates contribute to male-biased sex ratio in Adélie penguins.Ecology and evolution · 2024Article
- High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance.Proceedings. Biological sciences · 2023Article
- Seasonal habitat preference and foraging behaviour of post-moult Weddell seals in the western Ross Sea.Royal Society open science · 2023Article
- Elephant seal foraging success is enhanced in Antarctic coastal polynyas.Proceedings. Biological sciences · 2022Article
- Foraging dive frequency predicts body mass gain in the Adélie penguin.Scientific reports · 2021Article
- Horizontal-vertical movement relationships: Adélie penguins forage continuously throughout provisioning trips.Movement ecology · 2021Article
- Seasonal resource pulses and the foraging depth of a Southern Ocean top predator.Proceedings. Biological sciences · 2021Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
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[Pleuragramma antarctica] and crystal krill[Euphausia chrystallorophias]) responses to predation associated with the marginal ice zone (MIZ) of the McMurdo Sound, Antarctica, polynya. Prey abundance and habitat was sampled across a 30 × 15 km area by remotely-operated vehicle, and included locations that were accessible (ice edge) or inaccessible (solid fast ice) to air-breathing predators. Prey and habitat sampling coincided with bio-logging of Adélie penguins and observations of other air-breathing predators (penguins, seals, and whales), all of which were competing for the same prey. Adélie penguins dived deeper, and more frequently, near the ice edge. Lowered abundance of krill at the ice edge indicated they were depleted or were responding to increased predation and/or higher light levels along the ice edge. Penguin diet shifted increasingly to silverfish from krill during sampling, and was correlated with the arrival of krill-eating whales. Behaviorally-mediated, high trophic transfer characterizes the McMurdo Sound MIZ, and likely other MIZs, warranting more specific consideration in food web models and conservation efforts.
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