ArticlePloS one2018
High contributions of sea ice derived carbon in polar bear (Ursus maritimus) tissue.
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
10 citing papers in PubMed, 64 citations in OpenAlex.
- Diverging Food Web Functioning Around Southampton Island, Nunavut: The Influence of Primary Production Supply and Bathymetry.Ecology and evolution · 2026Article
- Seasonal vertical migration of large polar copepods reinterpreted as a dispersal mechanism throughout the water column.Communications earth & environment · 2025Article
- Advancements of 3D bioprinting in regenerative medicine: Exploring cell sources for organ fabrication.Heliyon · 2024Review
- Impact of Holocene environmental change on the evolutionary ecology of an Arctic top predator.Science advances · 2023Article
- Year-round utilization of sea ice-associated carbon in Arctic ecosystems.Nature communications · 2023Article
- Convergent evolution and horizontal gene transfer in Arctic Ocean microalgae.Life science alliance · 2023Article
- Article
- Atlantic walrus signal latitudinal differences in the long-term decline of sea ice-derived carbon to benthic fauna in the Canadian Arctic.Proceedings. Biological sciences · 2020Article
- Influence of past climate change on phylogeography and demographic history of narwhals,Proceedings. Biological sciences · 2020Article
- Influence of sea ice dynamics on population energetics of Western Hudson Bay polar bears.Conservation physiology · 2020Article
Corrections and comments
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Authors and funding
6 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Polar bears (Ursus maritimus) rely upon Arctic sea ice as a physical habitat. Consequently, conservation assessments of polar bears identify the ongoing reduction in sea ice to represent a significant threat to their survival. However, the additional role of sea ice as a potential, indirect, source of energy to bears has been overlooked. Here we used the highly branched isoprenoid lipid biomarker-based index (H-Print) approach in combination with quantitative fatty acid signature analysis to show that sympagic (sea ice-associated), rather than pelagic, carbon contributions dominated the marine component of polar bear diet (72-100%; 99% CI, n = 55), irrespective of differences in diet composition. The lowest mean estimates of sympagic carbon were found in Baffin Bay bears, which were also exposed to the most rapidly increasing open water season. Therefore, our data illustrate that for future Arctic ecosystems that are likely to be characterised by reduced sea ice cover, polar bears will not only be impacted by a change in their physical habitat, but also potentially in the supply of energy to the ecosystems upon which they depend. This data represents the first quantifiable baseline that is critical for the assessment of likely ongoing changes in energy supply to Arctic predators as we move into an increasingly uncertain future for polar ecosystems.
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Registered trials
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