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- Title
A method for heavy metal exposure risk assessment to migratory herbivorous birds and identification of priority pollutants/areas in wetlands.
- Authors
Liang, Jie; Liu, Jiayu; Yuan, Xingzhong; Zeng, Guangming; Yuan, Yujie; Wu, Haipeng; Li, Fei
- Abstract
Wetlands are important habitats for migratory birds but have been degraded by many anthropogenic factors including heavy metal contamination. Birds inhabiting wetlands are exposed to pollutants. In this study, a method for exposure risk assessment of migratory herbivorous birds and identification of priority pollutants/areas was developed and employed in East Dongting Lake wetland (EDT). Four heavy metals (Cr, Cu, Pb, and Cd) in sedge and soil samples from ten lesser white-fronted goose ( Anser erythropus) habitats in EDT were investigated. Results showed that negative effect of Cr and Pb on lesser white-fronted goose may occur while the concentrations of Cu and Cd are considered to be relatively safe. Prioritize threats were decreased in the following sequence: Cr > Pb > Cu > Cd. Cr and Pb were considered to be the priority pollutants. Spatial interpolation based on geostatistical methods showed that Spring Breeze Lake should draw much attention. Furthermore, regions with high hazard index were identified to be priority areas of EDT for risk management.
- Subjects
HEAVY metals &; the environment; WETLANDS; MIGRATORY birds; RISK assessment; LESSER white-fronted goose
- Publication
Environmental Science & Pollution Research, 2016, Vol 23, Issue 12, p11806
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-016-6372-3