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DOI10.1007/s10646-014-1394-4
Songbirds as sentinels of mercury in terrestrial habitats of eastern North America
Jackson, Allyson K.1,2; Evers, David C.2; Adams, Evan M.2; Cristol, Daniel A.3; Eagles-Smith, Collin4; Edmonds, Samuel T.2,5; Gray, Carrie E.2; Hoskins, Bart6; Lane, Oksana P.2; Sauer, Amy2; Tear, Timothy
发表日期2015-03-01
ISSN0963-9292
卷号24期号:2页码:453-467
英文摘要

Mercury (Hg) is a globally distributed environmental contaminant with a variety of deleterious effects in fish, wildlife, and humans. Breeding songbirds may be useful sentinels for Hg across diverse habitats because they can be effectively sampled, have well-defined and small territories, and can integrate pollutant exposure over time and space. We analyzed blood total Hg concentrations from 8,446 individuals of 102 species of songbirds, sampled on their breeding territories across 161 sites in eastern North America [geometric mean Hg concentration = 0.25 mu g/g wet weight (ww), range <0.01-14.60 mu g/g ww]. Our records span an important time period-the decade leading up to implementation of the USEPA Mercury and Air Toxics Standards, which will reduce Hg emissions from coal-fired power plants by over 90 %. Mixed-effects modeling indicated that habitat, foraging guild, and age were important predictors of blood Hg concentrations across species and sites. Blood Hg concentrations in adult invertebrate-eating songbirds were consistently higher in wetland habitats (freshwater or estuarine) than upland forests. Generally, adults exhibited higher blood Hg concentrations than juveniles within each habitat type. We used model results to examine species-specific differences in blood Hg concentrations during this time period, identifying potential Hg sentinels in each region and habitat type. Our results present the most comprehensive assessment of blood Hg concentrations in eastern songbirds to date, and thereby provide a valuable framework for designing and evaluating risk assessment schemes using sentinel songbird species in the time after implementation of the new atmospheric Hg standards.


英文关键词Bioaccumulation;Mercury;Passeriformes;Sentinel;Songbird
语种英语
WOS记录号WOS:000349334000020
来源期刊ECOTOXICOLOGY
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/61003
作者单位1.Oregon State Univ, Dept Fisheries & Wildlife, Corvallis, OR 97331 USA;
2.Biodivers Res Inst, Portland, ME 04103 USA;
3.Coll William & Mary, Dept Biol, Williamsburg, VA 23187 USA;
4.Forest & Rangeland Ecosystem Sci Ctr, US Geol Survey, Corvallis, OR 97331 USA;
5.TRC Companies Inc, Augusta, ME 04330 USA;
6.US EPA, New England Reg Lab, Chelmsford, MA 01863 USA
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GB/T 7714
Jackson, Allyson K.,Evers, David C.,Adams, Evan M.,et al. Songbirds as sentinels of mercury in terrestrial habitats of eastern North America[J]. 美国环保署,2015,24(2):453-467.
APA Jackson, Allyson K..,Evers, David C..,Adams, Evan M..,Cristol, Daniel A..,Eagles-Smith, Collin.,...&Tear, Timothy.(2015).Songbirds as sentinels of mercury in terrestrial habitats of eastern North America.ECOTOXICOLOGY,24(2),453-467.
MLA Jackson, Allyson K.,et al."Songbirds as sentinels of mercury in terrestrial habitats of eastern North America".ECOTOXICOLOGY 24.2(2015):453-467.
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