Macroinvertebrados Bentônicos Como Ferramenta Para Avaliar a Saúde de Riachos

Callisto, Marcos; Goulart, Maíra Figueiredo; Moretti, Marcelo S.

doi:10.21168/rbrh.v6n1.p71-82

Cited by 147 publications

(146 citation statements)

References 30 publications

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“…Diptera-Chironomidae quase sempre apresenta-se como dominante, tanto em ambientes lóticos como lênticos, devido a sua tolerância a situações extremas como hipóxia e grande capacidade competitiva (NESSIMIAN 1995b;MARQUES et al 1999;CALLISTO et al 2001b).…”

Section: Eixo2 (15%)unclassified

Estrutura da comunidade de invertebrados bentônicos em dois cursos d'água do Rio Grande do Sul, Brasil

2003

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Section: Eixo2 (15%)unclassified

Estrutura da comunidade de invertebrados bentônicos em dois cursos d'água do Rio Grande do Sul, Brasil

2003

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“…The study of biological communities is used as an important tool when assessing environmental conditions and in freshwater communities, macroinvertebrates are one of the most studied (Poi de Neiff and Carignan, 1997;Galdean et al, 2000;Buffagny et al, 2001;Callisto et al, 2001;Waite et al, 2004, among others).…”

Section: Introductionmentioning

confidence: 99%

Macroinvertebrate fauna associated with Pistia stratiotes and Nymphoides indica in subtropical lakes (south Brazil)

Palma‐Silva

2007

Braz. J. Biol.

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This study was carried out at the Biguás and Polegar lakes, both small environments but at different successional stages. The main objective was to characterize the macroinvertebrate community associated to the aquatic macrophyte stand in each lake in order for this community, the environmental conditions and their water quality to interact. The samples were taken in 2003. The abiotic variables of N and P totals, the temperature, electrical conductivity, pH and dissolved oxygen, as well as the determined clorophyll a concentration were measured. Macroinvertebrates were sampled with a 500 µ mesh size net, separated under a stereomicroscope and identified at the lowest possible taxonomic level, and their densities were shown as the number of individuals per 100 g of macrophyte dry weight. The Shannon-Wiener Diversity Index (H'), Pielou evenness (J), frequency of occurrence, abundance and taxa richness were calculated for each invertebrate community. The Lago dos Biguás is undergoing a process of eutrophication and during the study presented a large Pistia stratiotes stand. The Lago Polegar is oligotrophic and had only a small Nymphoides indica bankwe. The macrophyte associated invertebrate communities in each lake were considered significantly different (p < 0.05). Sixty seven taxa were found for the Lago dos Biguás and 32 for the Lago Polegar. For both lakes, most of the taxa were considered rare, with a low dominance in a few months. The taxa with highest densities at Lago dos Biguás were Chironomidae, Daphniidae and Cyclopidae, and Oligochaeta, Chironomidae and Coenagrionidae for Lago Polegar.Keywords: macroinvertebrates associated with macrophytes, communities, subtropical lakes. Fauna de macroinvertebrados associados a Pistia stratiotes e Nymphoides indica em lagos subtropicais (sul do Brasil) ResumoEste estudo foi realizado nos lagos dos Biguás e Polegar, ambientes de pequenas dimensões que se encontram em diferentes estágios sucessionais. O objetivo principal foi caracterizar a comunidade de macroinvertebrados, que vive associada ao estande de macrófitas aquáticas encontrado em cada um dos lagos, na tentativa de obter relações entre a comunidade, a saúde dos ambientes e a qualidade de água. As coletas foram feitas durante o ano de 2003. Em cada lago, foram avaliadas as concentrações de N e o P totais, o pH, temperatura, oxigênio dissolvido, condutividade elétri-ca, e determinadas as concentrações de clorofila a na água. A malha utilizada para a separação dos macroinvertebrados foi de 500 µ e os resultados de densidade foram expressos em 100 gramas de peso seco de macrófita. A triagem foi realizada sob estereomicroscópio e os organismos identificados até o menor nível taxonômico possível. Para cada comunidade foram calculados o Índice de Diversidade de Shannon-Wiener (H'), a homogeneidade de Pielou (J), a freqüência de ocorrência, a abundância e a riqueza de taxa. O Lago dos Biguás, em processo de eutrofização, apresentou durante o período estudado um grande estande de Pistia stratiotes. O Lago Poleg...

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“…This family is nearly always dominant in lotic as well as in lentic habitats, because of its tolerance for adverse situations, such as hypoxia, and its high competitive capacity (Marques et al 1999;Callisto et al 2001;Bueno et al 2003;Ribeiro & Uieda 2005).…”

Section: Discussionmentioning

confidence: 99%

Diversity and abundance of the benthic macrofauna in lotic environments from the central region of Rio Grande do Sul state, Brazil

2006

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Ayres-Peres, L., Sokolowicz, C.C. The benthic fauna plays an important role in the trophic web and the nutrient flow of limnetic environments. This work aimed to study the diversity and abundance of the benthic invertebrates in four watercourses in the central region of the state of Rio Grande do Sul, Brazil. Sampling was done seasonally at each site, with a long-handled net at the margins (banks) and streambed, from November 2001 through September 2002. Margalef richness, Shannon diversity and Pielou evenness indices were applied to the data analysis. A total of 58 families and three other major taxa (Hirudinea, Oligochaeta and Copepoda) of invertebrates were identified. The highest values of diversity and abundance were recorded at the margins of the rivers, in the same pattern found in other tropical and subtropical regions. This is the first inventory of benthic invertebrates from central region of Rio Grande do Sul, which will be important for future studies of the diversity and conservation of this fauna, because human alterations of the environment have already begun.

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Macroinvertebrados Bentônicos Como Ferramenta Para Avaliar a Saúde de Riachos

Cited by 147 publications

References 30 publications

Estrutura da comunidade de invertebrados bentônicos em dois cursos d'água do Rio Grande do Sul, Brasil

Estrutura da comunidade de invertebrados bentônicos em dois cursos d'água do Rio Grande do Sul, Brasil

Macroinvertebrate fauna associated with Pistia stratiotes and Nymphoides indica in subtropical lakes (south Brazil)

Diversity and abundance of the benthic macrofauna in lotic environments from the central region of Rio Grande do Sul state, Brazil

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