Effects of agricultural and urban impacts on macroinvertebrates assemblages in streams (Rio Grande do Sul, Brazil)

This study evaluates the effects of agricultural and urban activities on the structure and composition of benthic communities of streams in the state of Rio Grande do Sul, Brazil. Benthic macroinvertebrates were collected in streams influenced by urbanization and agriculture and in streams with no a...

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Published in:Zoologia (Curitiba, Brazil) Brazil), 2010-02, Vol.27 (1), p.106-113
Main Authors: Hepp, Luiz Ubiratan(Universidade Regional Integrada do Alto Uruguai e das Missões Departamento de Ciências Biológicas Laboratório de Biomonitoramento), Milesi, Silvia V.(Universidade Regional Integrada do Alto Uruguai e das Missões Departamento de Ciências Biológicas Laboratório de Biomonitoramento), Biasi, Cristiane(Universidade Regional Integrada do Alto Uruguai e das Missões Departamento de Ciências Biológicas Laboratório de Biomonitoramento), Restello, Rozane M.(Universidade Regional Integrada do Alto Uruguai e das Missões Departamento de Ciências Biológicas Laboratório de Biomonitoramento)
Format: Article
Language:English
Subjects:
Anthropogenic factors
Aquatic ecosystems
Benthic communities
Benthic fauna
Biomonitoring
Creeks & streams
environmental quality
Land use
land uses
Macroinvertebrates
Ordination
Organisms
Pollutants
Seasonal variations
Streams
Taxonomy
Urban agriculture
Urbanization
Variance analysis
Vegetation
Water quality
ZOOLOGY
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container_title Zoologia (Curitiba, Brazil)
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creator Hepp, Luiz Ubiratan(Universidade Regional Integrada do Alto Uruguai e das Missões Departamento de Ciências Biológicas Laboratório de Biomonitoramento)
Milesi, Silvia V.(Universidade Regional Integrada do Alto Uruguai e das Missões Departamento de Ciências Biológicas Laboratório de Biomonitoramento)
Biasi, Cristiane(Universidade Regional Integrada do Alto Uruguai e das Missões Departamento de Ciências Biológicas Laboratório de Biomonitoramento)
Restello, Rozane M.(Universidade Regional Integrada do Alto Uruguai e das Missões Departamento de Ciências Biológicas Laboratório de Biomonitoramento)
description This study evaluates the effects of agricultural and urban activities on the structure and composition of benthic communities of streams in the state of Rio Grande do Sul, Brazil. Benthic macroinvertebrates were collected in streams influenced by urbanization and agriculture and in streams with no anthropogenic disturbances (reference streams). Organism density was superior in urban streams when compared with streams in the other two areas. The taxonomic richness and Shannon diversity index were higher in reference streams. The benthic fauna composition was significantly different among land uses. The classification and ordination analyses corroborated the results of variance analyses demonstrating the formation of clusters corresponding to streams with similar land use. Seasonality was also found to influence the benthic community, though in a lesser degree than land use.
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1984-4689
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source Publicly Available Content (ProQuest); SciELO
subjects Anthropogenic factors
Aquatic ecosystems
Benthic communities
Benthic fauna
Biomonitoring
Creeks & streams
environmental quality
Land use
land uses
Macroinvertebrates
Ordination
Organisms
Pollutants
Seasonal variations
Streams
Taxonomy
Urban agriculture
Urbanization
Variance analysis
Vegetation
Water quality
ZOOLOGY
title Effects of agricultural and urban impacts on macroinvertebrates assemblages in streams (Rio Grande do Sul, Brazil)
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