气候变化领域集成服务门户(CCPortal): Forest fire increases mercury accumulation by fishes via food web restructuring and increased mercury inputs

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DOI	10.1073/pnas.0609798104
	Forest fire increases mercury accumulation by fishes via food web restructuring and increased mercury inputs
	Kelly E.N.; Schindler D.W.; St. Louis V.L.; Donald D.B.; Vladicka K.E.
发表日期	2006
ISSN	0027-8424
起始页码	19380
结束页码	19385
卷号	103 期号:51
英文摘要	Recent findings indicate that fishes from lakes in partially burned catchments contain greater mercury (Hg) concentrations than fishes from reference catchments. Increased methyl Hg (MeHg) concentrations in fishes can result in serious health problems for consumers. Here we show that a forest fire caused a 5-fold increase in whole-body Hg accumulation by rainbow trout (Oncorhynchus mykiss) and smaller Hg increases in muscle of several fish species in a mountain lake. The enhanced Hg accumulation was caused primarily by increased nutrient concentrations in the lake, which enhanced productivity and restructured the food web through increased piscivory and consumption of Mysis. This restructuring resulted in increases to the trophic positions and Hg concentrations of fishes. Forest fire also caused a large short-term release of total Hg (THg) and MeHg to streams and the lake. This release initiated a small pulse of MeHg in invertebrates that contributed to enhanced Hg accumulation by fishes. Climate change and prescribed burning to compensate for past fire suppression are predicted to increase future forest fire occurrence in North America, and increased Hg accumulation by fishes may be an unexpected consequencE. © 2006 by The National Academy of Sciences of the USA.
英文关键词	Climate change; Food chain length; Methyl mercury; Productivity; Stable isotopes
语种	英语
scopus关键词	methylmercury; stable isotope; article; catchment; climate change; concentration (parameters); consumer; fire; fish; food intake; food web; forest; health hazard; invertebrate; lake; nonhuman; North America; piscivore; priority journal; rainbow trout; Alberta; Animals; Environmental Monitoring; Fires; Food Chain; Fresh Water; Linear Models; Mercury; Muscle, Skeletal; Nitrogen Isotopes; Species Specificity; Spectrometry, Fluorescence; Trees; Trout; Invertebrata; Mysis; Oncorhynchus mykiss; Pisces
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159184
作者单位	Kelly, E.N., Department of Biological Sciences, University of Alberta, Edmonton, Alta. T6G 2E9, Canada, CW 405 Biological Sciences Centre, University of Alberta, Edmonton, Alta. T6G 2E9, Canada; Schindler, D.W., Department of Biological Sciences, University of Alberta, Edmonton, Alta. T6G 2E9, Canada; St. Louis, V.L., Department of Biological Sciences, University of Alberta, Edmonton, Alta. T6G 2E9, Canada; Donald, D.B., Environment Canada, Park Plaza, 2365 Albert Street, Regina, Sask. S4P 4K1, Canada; Vladicka, K.E., Department of Biological Sciences, University of Alberta, Edmonton, Alta. T6G 2E9, Canada
推荐引用方式 GB/T 7714	Kelly E.N.,Schindler D.W.,St. Louis V.L.,et al. Forest fire increases mercury accumulation by fishes via food web restructuring and increased mercury inputs[J],2006,103(51).
APA	Kelly E.N.,Schindler D.W.,St. Louis V.L.,Donald D.B.,&Vladicka K.E..(2006).Forest fire increases mercury accumulation by fishes via food web restructuring and increased mercury inputs.Proceedings of the National Academy of Sciences of the United States of America,103(51).
MLA	Kelly E.N.,et al."Forest fire increases mercury accumulation by fishes via food web restructuring and increased mercury inputs".Proceedings of the National Academy of Sciences of the United States of America 103.51(2006).