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  • Abeysinghe, Kasun S.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla, Yunnan, Peoples R China.;Univ Chinese Acad Sci, Beijing, Peoples R China. (author)

Total mercury and methylmercury concentrations over a gradient of contamination in earthworms living in rice paddy soil

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2016-11-11
  • Wiley,2017
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-326365
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-326365URI
  • https://doi.org/10.1002/etc.3643DOI
  • https://res.slu.se/id/publ/90556URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Mercury (Hg) deposited from emissions or from local contamination, can have serious health effects on humans and wildlife. Traditionally, Hg has been seen as a threat to aquatic wildlife, because of its conversion in suboxic conditions into bioavailable methylmercury (MeHg), but it can also threaten contaminated terrestrial ecosystems. In Asia, rice paddies in particular may be sensitive ecosystems. Earthworms are soil-dwelling organisms that have been used as indicators of Hg bioavailability; however, the MeHg concentrations they accumulate in rice paddy environments are not well known. Earthworm and soil samples were collected from rice paddies at progressive distances from abandoned mercury mines in Guizhou, China, and at control sites without a history of Hg mining. Total Hg (THg) and MeHg concentrations declined in soil and earthworms as distance increased from the mines, but the percentage of THg that was MeHg, and the bioaccumulation factors in earthworms, increased over this gradient. This escalation in methylation and the incursion of MeHg into earthworms may be influenced by more acidic soil conditions and higher organic content further from the mines. In areas where the source of Hg is deposition, especially in water-logged and acidic rice paddy soil, earthworms may biomagnify MeHg more than was previously reported. It is emphasized that rice paddy environments affected by acidifying deposition may be widely dispersed throughout Asia.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Yang, Xiao-DongChinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla, Yunnan, Peoples R China. (author)
  • Goodale, EbenGuangxi Univ, Coll Forestry, Nanning, Guangxi, Peoples R China. (author)
  • Anderson, Christopher W. N.Massey Univ, Inst Agr & Environm, Soil & Earth Sci, Palmerston North, New Zealand. (author)
  • Bishop, Kevin,1960-Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Uppsala universitet,Luft-, vatten- och landskapslära,Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Uppsala, Sweden.,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment,Uppsala University(Swepub:slu)47741 (author)
  • Cao, AxiangChinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Peoples R China.;Guizhou Normal Univ, Sch Chem & Mat Sci, Guiyang, Peoples R China. (author)
  • Feng, XinbinChinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Peoples R China. (author)
  • Liu, ShengjieChinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla, Yunnan, Peoples R China.;Univ Chinese Acad Sci, Beijing, Peoples R China. (author)
  • Mammides, ChristosChinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla, Yunnan, Peoples R China. (author)
  • Meng, BoChinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Peoples R China. (author)
  • Quan, Rui-ChangChinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla, Yunnan, Peoples R China. (author)
  • Sun, JingNanjing Agr Univ, Coll Resources & Environm Sci, Nanjing, Jiangsu, Peoples R China. (author)
  • Qiu, GuangleChinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Peoples R China. (author)
  • Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla, Yunnan, Peoples R China.;Univ Chinese Acad Sci, Beijing, Peoples R China.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla, Yunnan, Peoples R China. (creator_code:org_t)
  • Sveriges lantbruksuniversitet

Related titles

  • In:Environmental Toxicology and Chemistry: Wiley36:5, s. 1202-12100730-72681552-8618

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