Evidence map›Paper›PMID 25788594›Full record

ArticleProceedings. Biological sciences2015

Rapidly increasing methyl mercury in endangered ivory gull (Pagophila eburnea) feathers over a 130 year record.

Alexander L Bond, Keith A Hobson, Brian A Branfireun

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings. Biological sciences, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
8.7field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 98 citations in OpenAlex.

  1. Measuring historical pollution: Natural history collections as tools for public health and environmental justice research.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  2. Review
  3. Article
  4. A bibliometric analysis: what do we know about metals(loids) accumulation in wild birds?Environmental science and pollution research international · 2021
    Article
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  14. Museum specimens of terrestrial vertebrates are sensitive indicators of environmental change in the Anthropocene.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2018
    Review
  15. Article
  16. Article
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  19. Toxic metals and associated sporulated bacteria on Andean hummingbird feathers.Environmental science and pollution research international · 2016
    Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Alexander L BondDepartment of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan, Canada S7N 5E2 Environment Canada, 11 Innovation Boulevard, Saskatoon, Saskatchewan, Canada S7N 3H5 alex.bond@rspb.org.uk.
Keith A HobsonEnvironment Canada, 11 Innovation Boulevard, Saskatoon, Saskatchewan, Canada S7N 3H5.
Brian A BranfireunDepartment of Biology and Centre for Environment and Sustainability, Western University, Biological and Geological Sciences Building, London, Ontario, Canada N6A 5B7.
Environment and Climate Change Canada · CAWestern University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mercury (Hg) is increasing in marine food webs, especially at high latitudes. The bioaccumulation and biomagnification of methyl mercury (MeHg) has serious effects on wildlife, and is most evident in apex predators. The MeHg body burden in birds is the balance of ingestion and excretion, and MeHg in feathers is an effective indicator of overall MeHg burden. Ivory gulls (Pagophila eburnea), which consume ice-associated prey and scavenge marine mammal carcasses, have the highest egg Hg concentrations of any Arctic bird, and the species has declined by more than 80% since the 1980s in Canada. We used feathers from museum specimens from the Canadian Arctic and western Greenland to assess whether exposure to MeHg by ivory gulls increased from 1877 to 2007. Based on constant feather stable-isotope (δ(13)C, δ(15)N) values, there was no significant change in ivory gulls' diet over this period, but feather MeHg concentrations increased 45× (from 0.09 to 4.11 µg g(-1) in adults). This dramatic change in the absence of a dietary shift is clear evidence of the impact of anthropogenic Hg on this high-latitude threatened species. Bioavailable Hg is expected to increase in the Arctic, raising concern for continued population declines in high-latitude species that are far from sources of environmental contaminants.

Indexed as

Environmental ExposureAnimalsArctic RegionsCanadaCarbon IsotopesCharadriiformesDietEndangered SpeciesEnvironmental MonitoringFeathersFemaleGreenlandMaleMethylmercury CompoundsNitrogen IsotopesSeasonsCarbon IsotopesMethylmercury CompoundsNitrogen IsotopesWater Pollutants, ChemicalArcticmercurystable isotopesthreatened speciesδ13Cδ15N

Identifiers

PMID25788594
PMCPMC4389618
OpenAlexW2030279151

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.