Fish Assemblages in Pampean Streams (Buenos Aires, Argentina): Relationship to Abiotic and Anthropic Variables

The present study reported the effect of natural and anthropic environmental variables on the fish assemblages in the pampean streams, in the coastal strip along the Río de la Plata, Buenos Aires province, Argentina. Five streams were sampled at 12 sites surrounded by land devoted to different uses....

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Autores principales: Paracampo, Ariel Hernán, Marrochi, María Natalia, García, Ignacio Daniel, Maiztegui, Tomás, Carriquiriborde, Pedro, Bonetto, Carlos Alberto, Mugni, Hernán Diego
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
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Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/106683
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id I19-R120-10915-106683
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
environmental variables
freshwater fish
land use
nutrient concentrations
spellingShingle Ciencias Naturales
environmental variables
freshwater fish
land use
nutrient concentrations
Paracampo, Ariel Hernán
Marrochi, María Natalia
García, Ignacio Daniel
Maiztegui, Tomás
Carriquiriborde, Pedro
Bonetto, Carlos Alberto
Mugni, Hernán Diego
Fish Assemblages in Pampean Streams (Buenos Aires, Argentina): Relationship to Abiotic and Anthropic Variables
topic_facet Ciencias Naturales
environmental variables
freshwater fish
land use
nutrient concentrations
description The present study reported the effect of natural and anthropic environmental variables on the fish assemblages in the pampean streams, in the coastal strip along the Río de la Plata, Buenos Aires province, Argentina. Five streams were sampled at 12 sites surrounded by land devoted to different uses. A correspondence analysis sorted the streams into two groups: a less impacted group formed by sites surrounded by livestock- raising pastures and a more impacted one passing through urban sites and including a stream adjacent to a modest rural urbanization with a dairy in the stream’s basin. The nutrient concentrations were significantly higher in the more impacted group; with species richness, diversity, abundance, and biomass being significantly lower. A canonical-correspondence analysis linked the more impacted sites to high concentrations of soluble reactive phosphorus and impoverished fish assemblages, composed of species tolerant to environmental pollution. On the other hand, sites with higher oxygen concentrations and pH were related to richer assemblages pointing to good environmental conditions at the sites surrounded by livestock-raising pastures. The downstream sites on the less impacted streams contained fish assemblages in which the juvenile stages of species corresponding to the Río de la Plata were dominant.
format Articulo
Articulo
author Paracampo, Ariel Hernán
Marrochi, María Natalia
García, Ignacio Daniel
Maiztegui, Tomás
Carriquiriborde, Pedro
Bonetto, Carlos Alberto
Mugni, Hernán Diego
author_facet Paracampo, Ariel Hernán
Marrochi, María Natalia
García, Ignacio Daniel
Maiztegui, Tomás
Carriquiriborde, Pedro
Bonetto, Carlos Alberto
Mugni, Hernán Diego
author_sort Paracampo, Ariel Hernán
title Fish Assemblages in Pampean Streams (Buenos Aires, Argentina): Relationship to Abiotic and Anthropic Variables
title_short Fish Assemblages in Pampean Streams (Buenos Aires, Argentina): Relationship to Abiotic and Anthropic Variables
title_full Fish Assemblages in Pampean Streams (Buenos Aires, Argentina): Relationship to Abiotic and Anthropic Variables
title_fullStr Fish Assemblages in Pampean Streams (Buenos Aires, Argentina): Relationship to Abiotic and Anthropic Variables
title_full_unstemmed Fish Assemblages in Pampean Streams (Buenos Aires, Argentina): Relationship to Abiotic and Anthropic Variables
title_sort fish assemblages in pampean streams (buenos aires, argentina): relationship to abiotic and anthropic variables
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/106683
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