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Litter mercury deposition in the Amazonian rainforest.
Fostier, Anne Hélène; Melendez-Perez, José Javier; Richter, Larissa.
Afiliação
  • Fostier AH; Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP, Brazil. Electronic address: fostier@iqm.unicamp.br.
  • Melendez-Perez JJ; Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP, Brazil.
  • Richter L; Institute of Chemistry, University of Campinas, UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP, Brazil.
Environ Pollut ; 206: 605-10, 2015 Nov.
Article em En | MEDLINE | ID: mdl-26312742
The objective of this work was to assess the flux of atmospheric mercury transferred to the soil of the Amazonian rainforest by litterfall. Calculations were based on a large survey of published and unpublished data on litterfall and Hg concentrations in litterfall samples from the Amazonian region. Litterfall based on 65 sites located in the Amazon rainforest averaged 8.15 ± 2.25 Mg ha(-1) y(-1). Average Hg concentrations were calculated from nine datasets for fresh tree leaves and ten datasets for litter, and a median concentration of 60.5 ng Hg g(-1) was considered for Hg deposition in litterfall, which averaged 49 ± 14 µg m(-2) yr(-1). This value was used to estimate that in the Amazonian rainforest, litterfall would be responsible for the annual removing of 268 ± 77 Mg of Hg, approximately 8% of the total atmospheric Hg deposition to land. The impact of the Amazon deforestation on the Hg biogeochemical cycle is also discussed.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes do Solo / Árvores / Folhas de Planta / Poluentes Atmosféricos / Floresta Úmida / Mercúrio País/Região como assunto: America do sul / Brasil / Guyana francesa Idioma: En Revista: Environ Pollut Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2015 Tipo de documento: Article País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes do Solo / Árvores / Folhas de Planta / Poluentes Atmosféricos / Floresta Úmida / Mercúrio País/Região como assunto: America do sul / Brasil / Guyana francesa Idioma: En Revista: Environ Pollut Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2015 Tipo de documento: Article País de publicação: Reino Unido