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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34P/3PJDDPB
Repositóriosid.inpe.br/mtc-m21b/2017/09.06.15.15
Última Atualização2017:09.06.15.15.04 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m21b/2017/09.06.15.15.04
Última Atualização dos Metadados2020:12.31.02.07.56 (UTC) administrator
DOI10.3390/rs9080861
ISSN2072-4292
Chave de CitaçãoLoboCostNovoTelm:2017:EfSmGo
TítuloEffects of small-scale gold mining tailings on the underwater light field in the Tapajós River Basin, Brazilian Amazon
Ano2017
MêsAug.
Data de Acesso09 maio 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho11021 KiB
2. Contextualização
Autor1 Lobo, Felipe de Lucia
2 Costa, Maycira
3 Novo, Evlyn Márcia Leão de Moraes
4 Telmer, Kevin
Identificador de Curriculo1
2
3 8JMKD3MGP5W/3C9JH39
Grupo1 SER-SRE-SESPG-INPE-MCTIC-GOV-BR
2
3 DIDSR-CGOBT-INPE-MCTIC-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 University of Victoria
3 Instituto Nacional de Pesquisas Espaciais (INPE)
4 University of Victoria
Endereço de e-Mail do Autor1 felipe.lobo@inpe.br
2 maycira@uvic.ca
3 evlyn.novo@inpe.br
4 ktelmer@artisanalgold.org
RevistaRemote Sensing
Volume9
Número8
PáginasArticle number 861
Nota SecundáriaB3_GEOGRAFIA B3_ENGENHARIAS_I B4_GEOCIÊNCIAS B4_CIÊNCIAS_AMBIENTAIS B5_CIÊNCIAS_AGRÁRIAS_I
Histórico (UTC)2017-09-06 15:15:04 :: simone -> administrator ::
2017-09-06 15:15:04 :: administrator -> simone :: 2017
2017-09-06 15:15:39 :: simone -> administrator :: 2017
2020-12-31 02:07:56 :: administrator -> simone :: 2017
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-Chaveoptical properties
biogeochemical data
inorganic particles
light attenuation
critical depth
ResumoArtisanal and Small-scale Gold Mining (ASGM) within the Amazon region has created several environmental impacts, such as mercury contamination and changes in water quality due to increased siltation. This paper describes the effects of water siltation on the underwater light environment of rivers under different levels of gold mining activities in the Tapajós River Basin. Furthermore, it investigates possible impacts on the phytoplankton community. Two field campaigns were conducted in the Tapajós River Basin, during high water level and during low water level seasons, to measure Inherent and Apparent Optical Properties (IOPs, AOPs), including scattering (b) and absorption (a) coefficients and biogeochemical data (sediment content, pigments, and phytoplankton quantification). The biogeochemical data was separated into five classes according to the concentration of total suspended solids (TSS) ranging from 1.8 mg L-1 to 113.6 mg L-1. The in-water light environment varied among those classes due to a wide range of concentrations of inorganic TSS originated from different levels of mining activities. For tributaries with low or no influence of mining tailings (TSS up to 6.8 mg L-1), waters are relatively more absorbent with b:a ratio of 0.8 at 440 nm and b660 magnitude of 2.1 m-1. With increased TSS loadings from mining operations (TSS over 100 mg L-1), the scattering process prevails over absorption (b:a ratio of 10.0 at 440 nm), and b660 increases to 20.8 m-1. Non-impacted tributaries presented a critical depth for phytoplankton productivity of up to 6.0 m with available light evenly distributed throughout the spectra. Whereas for greatly impacted waters, attenuation of light was faster, reducing the critical depth to about 1.7 m, with most of the available light comprising of red wavelengths. Overall, a dominance of diatoms was observed for the upstream rivers, whereas cyanobacteria prevailed in the low section of the Tapajós River. The results suggest that the spatial and temporal distribution of phytoplankton in the Tapajós River Basin is not only a function of light availability, but rather depends on the interplay of factors, including flood pulse, water velocity, nutrient availability, and seasonal variation of incoming irradiance. Ongoing research indicates that the effects of mining tailings on the aquatic environment, described here, are occurring in several rivers within the Amazon River Basin.
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4. Condições de acesso e uso
URL dos dadoshttp://urlib.net/ibi/8JMKD3MGP3W34P/3PJDDPB
URL dos dados zipadoshttp://urlib.net/zip/8JMKD3MGP3W34P/3PJDDPB
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Arquivo Alvoremotesensing-09-00861.pdf
Grupo de Usuáriossimone
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5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
8JMKD3MGPCW/3F3NU5S
Lista de Itens Citandosid.inpe.br/mtc-m21/2012/07.13.14.45.43 4
sid.inpe.br/bibdigital/2013/10.18.22.34 3
DivulgaçãoWEBSCI; PORTALCAPES; MGA; COMPENDEX; SCOPUS.
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readpermission rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url
7. Controle da descrição
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