The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica

The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica

La calidad del agua de varias secciones de un rio tropical contaminado se estudi6 considerando factores qufmicos y biol6gicos. Los resultados confirman el alto grado de d e terioro de la cuenca del Rfo Grande de Tarcoles , situaci6n reflejada en el alto porcentaje de especies de diatomeas tolerantes...

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Autor principal: Silva-Benavides, Ana Margarita
Formato: Online
Idioma:eng
Publicado: Universidad de Costa Rica 1996
Acceso en línea:https://revistas.ucr.ac.cr/index.php/rbt/article/view/21625
id RBT21625
record_format ojs
spelling RBT216252023-07-12T15:41:49Z The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica Silva-Benavides, Ana Margarita tropical river Costa Rica organic pollution water chemistry diatoms differential species groups numerical vegetation analysis The water quality of several sections of a tropical river subjected to severe pollution was studied through physico-cbemical water analysis and benthic diatom assemblages. The methodology follows the concept of differential species groups and that of its modification for the groups of nutrient- differentiating species for rivers rich in both oxygen and inorganic nutrients. The trophic indication of the latter authors corresponded clearly with the results of chemical observations made in this study. The most abundant species found in this river were Navicula goeppertiana, Gomphonema parvulum, Gomphonema sp. aff. pumilum, Nitzschia palea, Nitzschia amphibia, Nitzschia clausii Nitzschia inconspicua, Navicula seminulum, Navicula sp. aff. cryptocephala, Navicula schroeterii var. escambia, Cymbella sinuata and Surirella sp. aff. roba. These species are known to be tolerant to organic pollution and eutrophication. Therefore we may conclude that diatoms are useful for biological monitoring of disturbed tropical rivers La calidad del agua de varias secciones de un rio tropical contaminado se estudi6 considerando factores qufmicos y biol6gicos. Los resultados confirman el alto grado de d e terioro de la cuenca del Rfo Grande de Tarcoles , situaci6n reflejada en el alto porcentaje de especies de diatomeas tolerantes a fuerte descarga de nutrientes y materia organica. Especies resistentes a fuertes condiciones de contaminaci6n, especies moderadamente resistentes y especies sensitivas a un sistema acuiitico deteriorado han servido de base para cJasificar diferentes niveles sapr6bicos en los sitios estudiados. Para ello se utiliz6 el concepto de grupos de diatomeas desarollado por Lange-Bertalot (1978, 1979, 1986) Y Steinberg and Schiefele (1988). Las especies mas abundantes fueron las siguientes: Navicula goeppertiana, Gomphonema parvulum. Gomphonema s p . aff. pumilum. Nitzschia palea. Nitzschia amphibia. N. clausii. N. inconspicua, Navicula seminulum, Navicula sp. aff. c ryptocephala . Navic ula schroeterii var. esca mbia . CymbeUa sinuata y Surirella sp. aff . roba. Universidad de Costa Rica 1996-08-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/21625 Revista de Biología Tropical; Vol. 44 No. 2A (1996): Volume 44 – Regular number 2A – August 1996; 395–416 Revista de Biología Tropical; Vol. 44 Núm. 2A (1996): Volumen 44 – Número regular 2A – Agosto 1996; 395–416 Revista Biología Tropical; Vol. 44 N.º 2A (1996): Volume 44 – Regular number 2A – August 1996; 395–416 2215-2075 0034-7744 10.15517/rbt.v44i2 A eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/21625/21868 Copyright (c) 1996 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0
institution Universidad de Costa Rica
collection Revista de Biología Tropical
language eng
format Online
author Silva-Benavides, Ana Margarita
spellingShingle Silva-Benavides, Ana Margarita
The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica
author_facet Silva-Benavides, Ana Margarita
author_sort Silva-Benavides, Ana Margarita
description La calidad del agua de varias secciones de un rio tropical contaminado se estudi6 considerando factores qufmicos y biol6gicos. Los resultados confirman el alto grado de d e terioro de la cuenca del Rfo Grande de Tarcoles , situaci6n reflejada en el alto porcentaje de especies de diatomeas tolerantes a fuerte descarga de nutrientes y materia organica. Especies resistentes a fuertes condiciones de contaminaci6n, especies moderadamente resistentes y especies sensitivas a un sistema acuiitico deteriorado han servido de base para cJasificar diferentes niveles sapr6bicos en los sitios estudiados. Para ello se utiliz6 el concepto de grupos de diatomeas desarollado por Lange-Bertalot (1978, 1979, 1986) Y Steinberg and Schiefele (1988). Las especies mas abundantes fueron las siguientes: Navicula goeppertiana, Gomphonema parvulum. Gomphonema s p . aff. pumilum. Nitzschia palea. Nitzschia amphibia. N. clausii. N. inconspicua, Navicula seminulum, Navicula sp. aff. c ryptocephala . Navic ula schroeterii var. esca mbia . CymbeUa sinuata y Surirella sp. aff . roba.
title The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica
title_short The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica
title_full The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica
title_fullStr The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica
title_full_unstemmed The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica
title_sort use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in costa rica
title_alt The use of water chemistry and benthic diatom communities for qualification of a polluted tropical river in Costa Rica
publisher Universidad de Costa Rica
publishDate 1996
url https://revistas.ucr.ac.cr/index.php/rbt/article/view/21625
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