Mercury fluxes in a natural forested Amazonian catchment (Serra do Navio, Amapa State, Brazil)

dc.creatorFostier, AH
dc.creatorForti, MC
dc.creatorGuimaraes, JRD
dc.creatorMelfi, AJ
dc.creatorBoulet, R
dc.creatorSanto, CME
dc.creatorKrug, FJ
dc.date2000
dc.dateOCT 9
dc.date2014-12-02T16:24:55Z
dc.date2015-11-26T17:20:13Z
dc.date2014-12-02T16:24:55Z
dc.date2015-11-26T17:20:13Z
dc.date.accessioned2018-03-29T00:07:51Z
dc.date.available2018-03-29T00:07:51Z
dc.identifierScience Of The Total Environment. Elsevier Science Bv, v. 260, n. 41699, n. 201, n. 211, 2000.
dc.identifier0048-9697
dc.identifierWOS:000089587000018
dc.identifier10.1016/S0048-9697(00)00564-7
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/53606
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/53606
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/53606
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1283085
dc.descriptionMercury (I-Ig total) fluxes were calculated for rainwater, throughfall and stream water in a small catchment located in the northeastern region of the Brazilian Amazon (Serra do Navio, Amapa State), whose upper part is covered by a natural rainforest and lower part was altered due to deforestation and activities related to manganese mining. The catchment area is 200 km from the nearest gold mining (garimpo). Minimum and maximum Hg concentrations were measured monthly from October 1996 to September 1997 and were 3.5-23.4 ng l(-1) for rainwater, 16.5-82.7 ng l(-1) for throughfall (March-August 1997) and 1.2-6.1 and 4.2-18.8 ng l(-1) for stream water, in natural and disturbed areas, respectively. In the natural area, the inputs were 18.2 mu g m(-2) year(-1) in rainwater and 72 mu g m(-2) year(-1) in throughfall. This enrichment was attributed to dry deposition. The stream output of 2.9 mu g m(-2) year(-1) indicates that Hg is being recycled within the forest as other chemical species or is being retained by the soil system, as confirmed by the cumulative Hg burden in the 0-10 cm surface layer, which was 36 480 mu g m When the disturbed area of the catchment was included, the stream output was 9.3 mu g m(-2), clearly indicating the impact of the deforestation of the lower part of the basin on the release of mercury. The Hg burden in the disturbed area was 7560 mu g m(-2) for the 0-10 cm surface layer. (C) 2000 Elsevier Science B.V. All rights reserved.
dc.description260
dc.description41699
dc.description201
dc.description211
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationScience Of The Total Environment
dc.relationSci. Total Environ.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectmercury fluxes
dc.subjectrainwater
dc.subjectthroughfall
dc.subjectstream water
dc.subjectAmazonian catchment
dc.subjectdeforestation
dc.subjectTropical Rain-forest
dc.subjectAtmospheric Mercury
dc.subjectDeposition
dc.subjectThroughfall
dc.subjectPollution
dc.subjectGold
dc.subjectMethylmercury
dc.subjectGeochemistry
dc.subjectChemistry
dc.subjectExchange
dc.titleMercury fluxes in a natural forested Amazonian catchment (Serra do Navio, Amapa State, Brazil)
dc.typeArtículos de revistas


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