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Effect of water quality variation on fish assemblages in an anthropogenically impacted tropical estuary, Colombian Pacific.
Duque, Guillermo; Gamboa-García, Diego Esteban; Molina, Andrés; Cogua, Pilar.
Afiliação
  • Duque G; Facultad de Ingeniería y Administración, Universidad Nacional de Colombia Sede Palmira, Palmira, Valle del Cauca, Colombia. gduquen@unal.edu.co.
  • Gamboa-García DE; Facultad de Ciencias Agrarias, Universidad Nacional de Colombia Sede Palmira, Palmira, Valle del Cauca, Colombia.
  • Molina A; Universidad Nacional de Colombia Sede Caribe, San Andrés y Providencia, Colombia.
  • Cogua P; Facultad de Ciencias Básicas, Universidad Santiago de Cali, Cali, Valle del Cauca, Colombia.
Environ Sci Pollut Res Int ; 27(20): 25740-25753, 2020 Jul.
Article em En | MEDLINE | ID: mdl-32356057
In tropical estuaries, fish diversity varies spatially and temporally due to behavioral processes such as reproductive migrations, predator avoidance, and foraging, which are affected by water quality. Eutrophication is one of the main factors affecting water quality in estuaries. The objective of this study was to determine variation in fish assemblage explained by fluctuating water quality in the Buenaventura Bay. Fish were captured using artisanal trawl nets during the wet, dry, and transitional seasons at four sampling sites. Additionally, alkalinity; phosphate, nitrite, and nitrate concentrations; dissolved oxygen; pH; temperature; and suspended solids were measured. Multivariate analysis was used to assess the effect of water quality on fish assemblage. In Buenaventura Bay, the assemblage composition of Pseudupeneus grandisquamis, Daector dowi, and Citharichthys gilberti was affected by nitrate concentration. Moreover, large fish biomasses were associated with high nitrite concentration, intermediate salinity, and low dissolved oxygen, suggesting that these estuaries are dominated by species tolerant to poor water quality. Species richness was associated with low nitrate and phosphate concentrations, more suitable water quality indicators, and intermediate temperatures. These results suggest that the deteriorating water quality of estuaries as a result of the anthropogenic impact could increase dominance and decrease richness, resulting in structural changes of fish assemblages.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Qualidade da Água / Estuários Limite: Animals País/Região como assunto: America do sul / Colombia Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Colômbia País de publicação: Alemanha
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: Qualidade da Água / Estuários Limite: Animals País/Região como assunto: America do sul / Colombia Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Colômbia País de publicação: Alemanha