Preliminary study of the benthic meiofauna in polluted sections of Rodríguez and Carnaval streams (Province of Buenos Aires, Argentina)
This work deals with the benthic meiofauna of Rodríguez and Carnaval streams, both of them being tributaries of the Río de la Plata. Two parameters were used to measure the effects of pollution on bottom-dwelling organisms: the most probable number of total coliforms (M.P.N., Standard Methods, 1971)...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste)
2025
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| Acceso en línea: | https://revistas.unne.edu.ar/index.php/eco/article/view/8458 |
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I48-R154-article-8458 |
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I48-R154-article-84582025-07-18T11:33:20Z Preliminary study of the benthic meiofauna in polluted sections of Rodríguez and Carnaval streams (Province of Buenos Aires, Argentina) Estudio preliminar de la meiofauna bentónica en tramos poluidos de los arroyos Rodríguez y Carnaval (provincia de Buenos Aires) Fernandez, Liliana Schnack, Juan A. This work deals with the benthic meiofauna of Rodríguez and Carnaval streams, both of them being tributaries of the Río de la Plata. Two parameters were used to measure the effects of pollution on bottom-dwelling organisms: the most probable number of total coliforms (M.P.N., Standard Methods, 1971) and the diversity index proposed by Shannon & Weaver (1963). A gradient of decreasing diversity was noticeable from the first sampling station—where polluting agents were loaded—to the last one, where recovery occurred as total coliforms decreased. This fact allowed us to characterize each area. Furthermore, the relative abundance of the different species at each section placed them into three different categories, as suggested by Mackenthum (1966): sensitive, intermediate-tolerant, and tolerant. Este trabajo trata sobre la meiofauna bentónica de los arroyos Rodríguez y Carnaval, ambos afluentes del Río de la Plata. Se utilizaron dos parámetros para medir los efectos de la contaminación sobre los organismos del fondo: el número más probable de coliformes totales (N.M.P., Standard Methods, 1971) y el índice de diversidad propuesto por Shannon y Weaver (1963). Se observó un gradiente de disminución de la diversidad desde la primera estación de muestreo —donde se introducían los agentes contaminantes— hasta la última, donde se produjo una recuperación a medida que disminuía la cantidad de coliformes totales. Este hecho permitió caracterizar cada área. Además, la abundancia relativa de las diferentes especies en cada sección permitió clasificarlas en tres categorías distintas, según lo sugerido por Mackenthum (1966): sensibles, de tolerancia intermedia y tolerantes. Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2025-07-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://revistas.unne.edu.ar/index.php/eco/article/view/8458 Ecosur; 1977: vol. 4, no. 8; 103-115 0325-108X spa https://revistas.unne.edu.ar/index.php/eco/article/view/8458/8012 |
| institution |
Universidad Nacional del Nordeste |
| institution_str |
I-48 |
| repository_str |
R-154 |
| container_title_str |
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) |
| language |
Español |
| format |
Artículo revista |
| author |
Fernandez, Liliana Schnack, Juan A. |
| spellingShingle |
Fernandez, Liliana Schnack, Juan A. Preliminary study of the benthic meiofauna in polluted sections of Rodríguez and Carnaval streams (Province of Buenos Aires, Argentina) |
| author_facet |
Fernandez, Liliana Schnack, Juan A. |
| author_sort |
Fernandez, Liliana |
| title |
Preliminary study of the benthic meiofauna in polluted sections of Rodríguez and Carnaval streams (Province of Buenos Aires, Argentina) |
| title_short |
Preliminary study of the benthic meiofauna in polluted sections of Rodríguez and Carnaval streams (Province of Buenos Aires, Argentina) |
| title_full |
Preliminary study of the benthic meiofauna in polluted sections of Rodríguez and Carnaval streams (Province of Buenos Aires, Argentina) |
| title_fullStr |
Preliminary study of the benthic meiofauna in polluted sections of Rodríguez and Carnaval streams (Province of Buenos Aires, Argentina) |
| title_full_unstemmed |
Preliminary study of the benthic meiofauna in polluted sections of Rodríguez and Carnaval streams (Province of Buenos Aires, Argentina) |
| title_sort |
preliminary study of the benthic meiofauna in polluted sections of rodríguez and carnaval streams (province of buenos aires, argentina) |
| description |
This work deals with the benthic meiofauna of Rodríguez and Carnaval streams, both of them being tributaries of the Río de la Plata. Two parameters were used to measure the effects of pollution on bottom-dwelling organisms: the most probable number of total coliforms (M.P.N., Standard Methods, 1971) and the diversity index proposed by Shannon & Weaver (1963).
A gradient of decreasing diversity was noticeable from the first sampling station—where polluting agents were loaded—to the last one, where recovery occurred as total coliforms decreased. This fact allowed us to characterize each area.
Furthermore, the relative abundance of the different species at each section placed them into three different categories, as suggested by Mackenthum (1966): sensitive, intermediate-tolerant, and tolerant. |
| publisher |
Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) |
| publishDate |
2025 |
| url |
https://revistas.unne.edu.ar/index.php/eco/article/view/8458 |
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2025-08-17T05:02:34Z |
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2025-08-17T05:02:34Z |
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