An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian Amazonia
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.scitotenv.2019.136088 http://hdl.handle.net/11449/201425 |
Resumo: | Currently, several concerns have been raised over metal contamination in the upper Amazon basin. Rivers that flow from the high Andes to the lowland Amazon are threatened by anthropogenic activities, which may, in turn, lead to increased metal concentrations in both water and sediments. In the present study, the impacts of multiple metal contamination sources in these ecosystems were identified. The degree of metal contamination was assessed in water and sediment and seed phytotoxicity analyses were carried out in samples taken from 14 sites located in upper Napo River tributaries, combining geochemical and ecotoxicological techniques. These tributaries were chosen based on their degree of anthropogenic contamination and proximity to known sources of relevant pollution, such as small-scale gold mining (MI), urban pollution (UP), fish farming (FF) and non-functional municipal landfill areas (LF). Our results suggest that anthropogenic activities are introducing metals to the aquatic ecosystem, as some metals were up to 500 times above the maximum permissible limits for the preservation of aquatic life established by Ecuadorian and North American guidelines. Sites located close to small-scale gold mining and sanitary landfills presented 100 to 1000 times higher concentrations than sites classified as “few threats”. In water, Cd, Pb, Cu, Zn and Hg were mostly above the maximum permissible limits in the samples, while Cd in sediment reached concentrations 5-fold above the probable effect level (PEL). Phytotoxicity was associated through the diffuse contamination present in urban and landfill areas. Overall, metal concentrations and phytotoxicity assessments suggest anthropogenic effects to environmental contamination, even though natural sources cannot be disregarded. Anthropogenic effects in the eastern Andean Rivers need to be constantly monitored in order to build a complete picture on how pollution sources may affect this strategic Amazon basin area. |
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An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian AmazoniaFish farmingMetalsMiningNapo RiverPhytotoxicitySedimentsUrban pollutionWaterCurrently, several concerns have been raised over metal contamination in the upper Amazon basin. Rivers that flow from the high Andes to the lowland Amazon are threatened by anthropogenic activities, which may, in turn, lead to increased metal concentrations in both water and sediments. In the present study, the impacts of multiple metal contamination sources in these ecosystems were identified. The degree of metal contamination was assessed in water and sediment and seed phytotoxicity analyses were carried out in samples taken from 14 sites located in upper Napo River tributaries, combining geochemical and ecotoxicological techniques. These tributaries were chosen based on their degree of anthropogenic contamination and proximity to known sources of relevant pollution, such as small-scale gold mining (MI), urban pollution (UP), fish farming (FF) and non-functional municipal landfill areas (LF). Our results suggest that anthropogenic activities are introducing metals to the aquatic ecosystem, as some metals were up to 500 times above the maximum permissible limits for the preservation of aquatic life established by Ecuadorian and North American guidelines. Sites located close to small-scale gold mining and sanitary landfills presented 100 to 1000 times higher concentrations than sites classified as “few threats”. In water, Cd, Pb, Cu, Zn and Hg were mostly above the maximum permissible limits in the samples, while Cd in sediment reached concentrations 5-fold above the probable effect level (PEL). Phytotoxicity was associated through the diffuse contamination present in urban and landfill areas. Overall, metal concentrations and phytotoxicity assessments suggest anthropogenic effects to environmental contamination, even though natural sources cannot be disregarded. Anthropogenic effects in the eastern Andean Rivers need to be constantly monitored in order to build a complete picture on how pollution sources may affect this strategic Amazon basin area.Universidad San Francisco de QuitoConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Facultad de Ciencias de la Tierra y Agua Universidad Regional Amazónica Ikiam, km 7 vía a MuyunaEscuela de Química Facultad de Ciencias Exactas y Naturales Universidad Católica del Ecuador, Avenida 12 de Octubre 1076Colegio de Ciencias e Ingenierías Instituto Biósfera Universidad San Francisco de Quito, Diego de Robles y Vía InteroceánicaDepartment of Environmental Sciences and Engineering Gillings School of Global Public Health University of North Carolina at Chapel HillSão Paulo State University - UNESP, Praça Infante Dom Henrique, s/nSão Paulo State University - UNESP, Praça Infante Dom Henrique, s/nCNPq: #308533/2018-6Universidad Regional Amazónica IkiamUniversidad Católica del EcuadorUniversidad San Francisco de QuitoUniversity of North Carolina at Chapel HillUniversidade Estadual Paulista (Unesp)Capparelli, Mariana VellosaMoulatlet, Gabriel MassaineAbessa, Denis Moledo de Souza [UNESP]Lucas-Solis, OscarRosero, BryanGalarza, EmilyTuba, DamianCarpintero, NataliaOchoa-Herrera, ValeriaCipriani-Avila, Isabel2020-12-12T02:32:12Z2020-12-12T02:32:12Z2020-03-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.scitotenv.2019.136088Science of the Total Environment, v. 709.1879-10260048-9697http://hdl.handle.net/11449/20142510.1016/j.scitotenv.2019.1360882-s2.0-85076988148Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengScience of the Total Environmentinfo:eu-repo/semantics/openAccess2021-10-22T18:56:49Zoai:repositorio.unesp.br:11449/201425Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:09:01.380533Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian Amazonia |
title |
An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian Amazonia |
spellingShingle |
An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian Amazonia Capparelli, Mariana Vellosa Fish farming Metals Mining Napo River Phytotoxicity Sediments Urban pollution Water |
title_short |
An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian Amazonia |
title_full |
An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian Amazonia |
title_fullStr |
An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian Amazonia |
title_full_unstemmed |
An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian Amazonia |
title_sort |
An integrative approach to identify the impacts of multiple metal contamination sources on the Eastern Andean foothills of the Ecuadorian Amazonia |
author |
Capparelli, Mariana Vellosa |
author_facet |
Capparelli, Mariana Vellosa Moulatlet, Gabriel Massaine Abessa, Denis Moledo de Souza [UNESP] Lucas-Solis, Oscar Rosero, Bryan Galarza, Emily Tuba, Damian Carpintero, Natalia Ochoa-Herrera, Valeria Cipriani-Avila, Isabel |
author_role |
author |
author2 |
Moulatlet, Gabriel Massaine Abessa, Denis Moledo de Souza [UNESP] Lucas-Solis, Oscar Rosero, Bryan Galarza, Emily Tuba, Damian Carpintero, Natalia Ochoa-Herrera, Valeria Cipriani-Avila, Isabel |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidad Regional Amazónica Ikiam Universidad Católica del Ecuador Universidad San Francisco de Quito University of North Carolina at Chapel Hill Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Capparelli, Mariana Vellosa Moulatlet, Gabriel Massaine Abessa, Denis Moledo de Souza [UNESP] Lucas-Solis, Oscar Rosero, Bryan Galarza, Emily Tuba, Damian Carpintero, Natalia Ochoa-Herrera, Valeria Cipriani-Avila, Isabel |
dc.subject.por.fl_str_mv |
Fish farming Metals Mining Napo River Phytotoxicity Sediments Urban pollution Water |
topic |
Fish farming Metals Mining Napo River Phytotoxicity Sediments Urban pollution Water |
description |
Currently, several concerns have been raised over metal contamination in the upper Amazon basin. Rivers that flow from the high Andes to the lowland Amazon are threatened by anthropogenic activities, which may, in turn, lead to increased metal concentrations in both water and sediments. In the present study, the impacts of multiple metal contamination sources in these ecosystems were identified. The degree of metal contamination was assessed in water and sediment and seed phytotoxicity analyses were carried out in samples taken from 14 sites located in upper Napo River tributaries, combining geochemical and ecotoxicological techniques. These tributaries were chosen based on their degree of anthropogenic contamination and proximity to known sources of relevant pollution, such as small-scale gold mining (MI), urban pollution (UP), fish farming (FF) and non-functional municipal landfill areas (LF). Our results suggest that anthropogenic activities are introducing metals to the aquatic ecosystem, as some metals were up to 500 times above the maximum permissible limits for the preservation of aquatic life established by Ecuadorian and North American guidelines. Sites located close to small-scale gold mining and sanitary landfills presented 100 to 1000 times higher concentrations than sites classified as “few threats”. In water, Cd, Pb, Cu, Zn and Hg were mostly above the maximum permissible limits in the samples, while Cd in sediment reached concentrations 5-fold above the probable effect level (PEL). Phytotoxicity was associated through the diffuse contamination present in urban and landfill areas. Overall, metal concentrations and phytotoxicity assessments suggest anthropogenic effects to environmental contamination, even though natural sources cannot be disregarded. Anthropogenic effects in the eastern Andean Rivers need to be constantly monitored in order to build a complete picture on how pollution sources may affect this strategic Amazon basin area. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:32:12Z 2020-12-12T02:32:12Z 2020-03-20 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.scitotenv.2019.136088 Science of the Total Environment, v. 709. 1879-1026 0048-9697 http://hdl.handle.net/11449/201425 10.1016/j.scitotenv.2019.136088 2-s2.0-85076988148 |
url |
http://dx.doi.org/10.1016/j.scitotenv.2019.136088 http://hdl.handle.net/11449/201425 |
identifier_str_mv |
Science of the Total Environment, v. 709. 1879-1026 0048-9697 10.1016/j.scitotenv.2019.136088 2-s2.0-85076988148 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Science of the Total Environment |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129495018766336 |