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Assessing the Quality of Amazon Aquatic Ecosystems with Multiple Lines of Evidence: The Case of the Northeast Andean Foothills of Ecuador.
Galarza, Emily; Cabrera, Marcela; Espinosa, Rodrigo; Espitia, Edgar; Moulatlet, Gabriel M; Capparelli, Mariana V.
Afiliação
  • Galarza E; Facultad de Ciencias de La Tierra Y Agua, Universidad Regional Amazónica Ikiam, Km 7 Vía Muyuna, Tena, Napo, Ecuador.
  • Cabrera M; Laboratorio Nacional de Referencia del Agua, Universidad Regional Amazónica Ikiam, Km 7 Vía Muyuna, Tena, Napo, Ecuador.
  • Espinosa R; Grupo de Biogeografía y Ecología Espacial - BioGeoE2, Universidad Regional Amazónica Ikiam, Km 7 Vía Muyuna, Tena, Napo, Ecuador.
  • Espitia E; Facultad de Ciencias de La Vida, Universidad Regional Amazónica Ikiam, Km 7 Vía Muyuna, Tena, Napo, Ecuador.
  • Moulatlet GM; Facultad de Ciencias de La Tierra Y Agua, Universidad Regional Amazónica Ikiam, Km 7 Vía Muyuna, Tena, Napo, Ecuador.
  • Capparelli MV; Facultad de Ciencias de La Tierra Y Agua, Universidad Regional Amazónica Ikiam, Km 7 Vía Muyuna, Tena, Napo, Ecuador.
Bull Environ Contam Toxicol ; 107(1): 52-61, 2021 Jul.
Article em En | MEDLINE | ID: mdl-33491128
We assessed the quality of Andes-Amazonia streams in Ecuador impacted by gold mining (GM), discharges from inefficient sewage network in urban areas (UA), wastes from fish farming (FF) and from non-functional landfill (LF) and other few threats (FT). We selected three lines of evidence (LOE) that were used separately and integrated into a index: water quality (WQI) and macroinvertebrate community (AAMBI) indices and phytotoxicity tests. Streams affected by UA and LF had the lowest scores to WQI and phytotoxicity, and by GM had the lowest scores to AAMBI. Macroinvertebrate absence in GM should be considered as a warning signal of long-term mining impacts in the area. The integrated LOE index showed that sites with identified threats had 30%-53% stream quality decline compared to FT sites. The use of the selected LOE seems to be a useful tools for long-term monitoring and evaluation of this sensitive aquatic ecosystem.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ecossistema / Invertebrados Tipo de estudo: Prognostic_studies Limite: Animals País/Região como assunto: America do sul / Brasil / Ecuador Idioma: En Revista: Bull Environ Contam Toxicol Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Equador País de publicação: Estados Unidos
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ecossistema / Invertebrados Tipo de estudo: Prognostic_studies Limite: Animals País/Região como assunto: America do sul / Brasil / Ecuador Idioma: En Revista: Bull Environ Contam Toxicol Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Equador País de publicação: Estados Unidos