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Mercury flow through an Asian rice-based food web

Abeysinghe, Kasun S. (author)
Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China.;Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.;Guangxi Univ, Coll Forestry, Guangxi Key Lab Forest Ecol & Conservat, 100 Daxue Rd,Coll Forestry Off 519, Nanning 530005, Guangxi, Peoples R China.;Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China.
Qiu, Guangle (author)
Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China.
Goodale, Eben (author)
Guangxi Univ, Coll Forestry, Guangxi Key Lab Forest Ecol & Conservat, 100 Daxue Rd,Coll Forestry Off 519, Nanning 530005, Guangxi, Peoples R China.
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Anderson, Christopher W. N. (author)
Massey Univ, Inst Agr & Environm, Soil & Earth Sci, Palmerston North 4442, New Zealand.
Bishop, Kevin (author)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Uppsala universitet,Institutionen för geovetenskaper,Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Lennart Hjelmsvag 9, SE-75007 Uppsala, Sweden.,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment,Uppsala University
Evers, David C. (author)
Biodivers Res Inst, 276 Canco Rd, Portland, ME 04103 USA.
Goodale, Morgan W. (author)
Biodivers Res Inst, 276 Canco Rd, Portland, ME 04103 USA.
Hintelmann, Holger (author)
Trent Univ, Chem Dept, 1600 West Bank Dr, Peterborough, ON K9J 7B8, Canada.
Liu, Shengjie (author)
Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.;Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China.
Mammides, Christos (author)
Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.
Quan, Rui-Chang (author)
Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.
Wang, Jin (author)
Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.;Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China.
Wu, Pianpian (author)
Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment,Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Lennart Hjelmsvag 9, SE-75007 Uppsala, Sweden.
Xu, Xiao-Hang (author)
Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China.;Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China.
Yang, Xiao-Doug (author)
Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.
Feng, Xinbin (author)
Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China.
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Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China;Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China.;Guangxi Univ, Coll Forestry, Guangxi Key Lab Forest Ecol & Conservat, 100 Daxue Rd,Coll Forestry Off 519, Nanning 530005, Guangxi, Peoples R China.;Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China. Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China. (creator_code:org_t)
 
ELSEVIER SCI LTD, 2017
2017
English.
In: Environmental Pollution. - : ELSEVIER SCI LTD. - 0269-7491 .- 1873-6424. ; 229, s. 219-228
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Mercury (Hg) is a globally-distributed pollutant, toxic to humans and animals. Emissions are particularly high in Asia, and the source of exposure for humans there may also be different from other regions, including rice as well as fish consumption, particularly in contaminated areas. Yet the threats Asian wildlife face in rice-based ecosystems are as yet unclear. We sought to understand how Hg flows through rice-based food webs in historic mining and non-mining regions of Guizhou, China. We measured total Hg (THg) and methylmercury (MeHg) in soil, rice, 38 animal species (27 for MeHg) spanning multiple trophic levels, and examined the relationship between stable isotopes and Hg concentrations. Our results confirm biomagnification of THg/MeHg, with a high trophic magnification slope. Invertivorous songbirds had concentrations of THg in their feathers that were 15x and 3x the concentration reported to significantly impair reproduction, at mining and non-mining sites, respectively. High concentrations in specialist rice consumers and in granivorous birds, the later as high as in piscivorous birds,, suggest rice is a primary source of exposure. Spiders had the highest THg concentrations among invertebrates and may represent a vector through which Hg is passed to vertebrates, especially songbirds. Our findings suggest there could be significant population level health effects and consequent biodiversity loss in sensitive ecosystems, like agricultural wetlands, across Asia, and invertivorous songbirds would be good subjects for further studies investigating this possibility.

Subject headings

NATURVETENSKAP  -- Geovetenskap och miljövetenskap (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences (hsv//eng)
NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)

Keyword

Agricultural ecosystems
Biomonitoring
Contamination
Ecotoxicology
Food webs
Heavy metals

Publication and Content Type

ref (subject category)
art (subject category)

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