Body feather mercury and arsenic concentrations in five species of seabirds from the Falkland Islands.

Abstract:

:Several pollutants, including heavy metals, magnify along the food chain, and top predators such as seabirds can be used to monitor their trends in the marine environment. We studied mercury and arsenic contamination in body feathers in penguins, petrels and cormorants in three islands of the Falklands Islands. There were significant differences among species and sites in the concentration of trace elements in feathers. Black-browed albatrosses and gentoo penguins had consistently high mercury concentrations on New Island, while Rockhopper penguins and imperial shags presented considerably higher concentrations at Beauchene Island. Mercury levels in black-browed albatrosses increased since 1986 on one of the islands, probably reflecting world-wide emission trends. Rockhopper penguins exhibited high arsenic levels, but levels were less variable among species, and were not correlated with mercury levels, suggesting low biomagnification. These results provide a reference line for bioindication studies using feathers from species on the Falkland Islands.

journal_name

Mar Pollut Bull

authors

Furtado R,Pereira ME,Granadeiro JP,Catry P

doi

10.1016/j.marpolbul.2019.110574

subject

Has Abstract

pub_date

2019-12-01 00:00:00

pages

110574

eissn

0025-326X

issn

1879-3363

pii

S0025-326X(19)30719-2

journal_volume

149

pub_type

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