Precipitation influences on uptake of a global pollutant by a coastal avian species
| Autor: | Charles H. Jagoe, Heather A. Brant, Christopher S. Romanek, Joel W. Snodgrass, I. Lehr Brisbin, Albert L. Bryan, Gary L. Mills |
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| Rok vydání: | 2014 |
| Předmět: |
Rain
Health Toxicology and Mutagenesis Foraging Wildlife Fresh Water Wetland Mass Spectrometry Nesting Behavior Birds Nutrient Animals Environmental Chemistry Ecosystem Pollutant Carbon Isotopes geography geography.geographical_feature_category Nitrogen Isotopes biology δ13C Ecology Mercury Feathers Stork biology.organism_classification Habitat Wetlands Environmental science Water Pollutants Chemical |
| Zdroj: | Environmental Toxicology and Chemistry. 33:2711-2715 |
| ISSN: | 1552-8618 0730-7268 |
| DOI: | 10.1002/etc.2752 |
| Popis: | Climatic variation, including precipitation amounts and timing, has been linked to abundance and breeding success of many avian species. Less studied, but also of significance, is the consequence of climatic variability on the exposure and uptake of nutrients and contaminants by wildlife. The authors examined mercury (Hg) concentrations in nestling wood stork feathers in a coastal setting over a 16-yr period to understand the influence of rainfall amounts on Hg transfer by parental provisioning relative to habitat use, assuming differential bioavailability of Hg within freshwater and saltwater habitat types. Coastal Hg uptake by stork nestlings was linked to freshwater habitat use, as indicated by stable carbon isotope (δ13C) analyses. Cumulative rainfall amounts exceeding 220 cm in the 23 mo preceding the breeding seasons resulted in greater use of freshwater wetlands as foraging habitat and greater Hg accumulation by nestling storks. Environ Toxicol Chem 2014;33:2711–2715. © 2014 SETAC |
| Databáze: | OpenAIRE |
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