文章基本信息

标题：Incorporation of Deepwater Horizon oil in a terrestrial bird
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作者：A Bonisoli-Alquati ; P C Stouffer ; R E Turner 等
期刊名称：Environmental Research Letters
印刷版ISSN：1748-9326
电子版ISSN：1748-9326
出版年度：2016
卷号：11
期号：11
页码：114023
DOI：10.1088/1748-9326/11/11/114023
语种：English
出版社：IOP Publishing Ltd
摘要：Carbon isotopic evidence revealed Deepwater Horizon (DWH) oil entering coastal planktonic and lower terrestrial food webs. The integration of spilled oil into higher terrestrial trophic levels, however, remains uncertain. We measured radiocarbon (¹⁴C) and stable carbon (¹³C) in seaside sparrow (Ammodramus maritimus) feathers and crop contents. Lower ¹⁴C and ¹³C values in feathers and crop contents of birds from contaminated areas indicated incorporation of carbon from oil. Our results, although based on a small sample of birds, thus reveal a food-web link between oil exposure and a terrestrial ecosystem. They also suggest that the reduction in reproductive success previously documented in the same population might be due to the (direct) toxic effect of oil exposure, rather than to (indirect) ecological effects. We recommend future studies test our results by using larger samples of birds from a wider area in order to assess the extent and implications of DWH oil incorporation into the terrestrial food web.