Are the streams of the Sinos River basin of good water quality? Aquatic macroinvertebrates may answer the question

Bieger, Leandro; Carvalho, A B P; Strieder, Milton Norberto; Maltchik, Leonardo; Stenert, Cristina

doi:10.1590/s1519-69842010000600010

Cited by 19 publications

(13 citation statements)

References 14 publications

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“…River basin represent 68% of the total amount registered for the state of Rio Grande do Sul. Bieger et al (2010), registered 54 macroinvertebrate families in small streams in the Sinos River basin. For these 54 families, the following were not registered in this study: Mycetopodidae and Sphaeridae (Bivalvia/Mollusca) and Lymnaeidae and Physidae (Gastropoda/Mollusca); Dogielinotidae (Arthropoda/Crustacea/Amphipoda) and Aeglidae (Arthropoda/Crustacea/Decapoda); Aeshnidae (Arthropoda/Insecta/Odonata); Noteridae (Arthropoda/ Insecta/Coleoptera); Euthyplocidae (Arthropoda/Insecta/ Ephemeroptera); Nepidae, Hydrometridae, Gelastocoridae and Corixidae (Arthropoda/Insecta/Hemiptera); Dixidae, Ceratopogonidae and Blephaceridae (Arthropoda/Insecta/ Diptera).…”

Section: Biodiversity Community Structure and Compositionmentioning

confidence: 99%

“…The following studies are highlighted for the drainage basin of the Sinos river: Mansur and Pereira (2006), Strieder et al (2006), Bieger et al (2010) and Maltchik et al (2010). The objective of the present study is to characterize the benthic macroinvertebrate fauna found in three water bodies located in the Sinos river drainage basin regarding community structure.…”

Section: Introductionmentioning

confidence: 99%

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Benthic macroinvertebrate community in the Sinos river drainage basin, Rio Grande do Sul, Brazil

2016

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Aquatic macroinvertebrate fauna is a relevant component of limnic continental aquatic ecosystems, playing an important role in several processes with relevant biocomplexity. The present study characterized the benthic macroinvertebrate fauna found in three hydric bodies in the Sinos river drainage basin regarding community structure. Sample was collected from January to December 2013 in three locations in the basin: the city of Caraá (29 °45'45.5"S/50°19'37.3"W), the city of Rolante (29°38'34.4"S/50°32'33.2"W) and the city of Igrejinha (29°36'10.84"S/50°48'49.3"W). Abiotic components (pH, dissolved oxygen and temperature) were registered and collected samples were identified up to family type. Average annual pH, dissolved oxygen and temperature were similar in all locations. A total of 26,170 samples were collected. Class Insecta (Arthropods) represented 85.5% of total sample. Platyhelmintes, Mollusca and Annelida samples were also registered. A total of 57 families were identified for the drainage basin and estimators (Chao-1, Chao-2 and jackknife 2) estimated richness varying from 60 to 72 families.Keywords: aquatic invertebrates, community structure, diversity indices. A comunidade de macroinvertebrados bentônicos da bacia hidrográfica do rio dos Sinos, Rio Grande do Sul, Brasil ResumoA fauna de macroinvertebrados aquáticos é um relevante componente dos ecossistemas aquáticos límnicos continentais, atuando em vários processos de importante biocomplexidade. O presente estudo caracterizou a fauna de macroinvertebrados bentônicos em três corpos hídricos da Bacia Hidrográfica do Rio dos Sinos, em relação a estrutura da comunidade. Amostragens foram realizadas de janeiro a dezembro de 2013 em três locais na bacia: Município de Caraá (29°45'45,5"S/50°19'37,3"W), Município de Rolante (29°38'34,4"S/50°32'33,2"W) e Município de Igrejinha (29°36'10,84"S/50°48'49,3"W). Variáveis abióticas (pH, oxigênio dissolvido e temperatura) foram registradas e os exemplares coletados identificados até família. As médias anuais de pH, oxigênio dissolvido e temperatura foram similares em todos os pontos. Um total de 26.170 exemplares foi amostrado. A Classe Insecta (Arthropoda) representou 85,5% do total. Platyhelmintes, Mollusca e Annelida também foram registrados. Foram determinadas 57 famílias para a bacia hidrográfica e os estimadores (Chao-1, Chao-2 e jackknife 2) projetaram uma riqueza variando de 60 a 72.Palavras-chave: invertebrados aquáticos, estrutura da comunidade, índices de diversidade.

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Section: Biodiversity Community Structure and Compositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Benthic macroinvertebrate community in the Sinos river drainage basin, Rio Grande do Sul, Brazil

2016

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“…The main anthropogenic factors in the area are the agricultural activity in the upper reach, the leather and footwear industry and the increase of the population density in the middle reach, and a high population density and the presence of leather and footwear industry, metallurgy and petrochemical plants in the lower reach (Bieger et al, 2010;Figueiredo et al, 2010;FEPAM, 2012;Nunes et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Cytotoxicity assays as tools to assess water quality in the Sinos River basin

et al. 2015

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Cytotoxicity assays using cell cultures may be an alternative to assess biological toxicity of surface waters and may help to improve the control of water quality. This study compared two methods to prepare culture media for the exposure of Hep-2 cells to water samples collected from the Rolante River, an important affluent of the Sinos River. The toxicity was evaluated using the MTT and neutral red assays. Two methods were used to prepare culture media. In method 1, the sample was diluted at 1:1, 1:10, 1:100, 1:1000, 1:10.000 (v/v, sample/medium) in a standard culture medium; in method 2, water samples were used as the solvent for the culture medium, which was prepared at concentrations of 100, 80, 60, 40 and 20%. Semi-confluent cultures were then exposed to the media test for 24 hours, and cytotoxicity was determined immediately using the MTT and NR assays. Mitochondrial activity (MTT) was significantly lower at all concentrations in both methods, except at 1:1000 in method 1. However, the lysosome viability (NR) results revealed cytotoxicity only in the 1:1 sample of method 1. Both culture preparation methods were efficient and sensitive to the MTT assay, but method 2 seemed to be more adequate for the NR assay. The Rolante River has cytotoxic contaminants to Hep-2 cells, which may be one of the explanations for the poor water quality of the Sinos River basin.Keywords: cytotoxicity, Sinos River basin, samples preparation. Ensaios de citotoxicidade como ferramentas para avaliar a qualidade da água da bacia do Rio do Sinos ResumoOs ensaios de citotoxicidade utilizando culturas de células constituem uma alternativa para avaliar a toxicidade biológica de águas de superfície e podem auxiliar no controle da qualidade da água. Este estudo comparou dois métodos de preparação dos meios de cultura com amostras de água coletadas no rio Rolante, um importante afluente do Rio dos Sinos, para a exposição de células Hep-2. A toxicidade foi avaliada usando os ensaios do MTT e do vermelho neutro (VN). Dois métodos foram utilizados para preparar os meios de cultura. No método 1, a amostra foi diluída a 1:1, 1:10, 1:100, 1:1000 e 1:10.000 (v/v, amostra/ meio de cultivo) em um meio de cultura padrão; no método 2, as amostras de água foram utilizados como solventes para o meio de cultura, o qual foi preparado em concentração de 100% e nas diluições de 80, 60, 40 e 20%. Culturas semi-confluentes foram então expostas aos meios teste durante 24 horas, e a citotoxicidade foi determinada imediatamente usando os ensaios MTT e VN. A atividade mitocondrial (MTT) foi significativamente menor em todas as concentrações em ambos os métodos, exceto na diluição 1:1000 do método 1. No entanto, os resultados de viabilidade lisossomal (VN) revelaram citotoxicidade apenas no na diluição 1:1 do método 1. Ambos os métodos de preparação do meio cultura foram eficientes e sensíveis para o ensaio do MTT, mas o método 2 foi mais adequado para o ensaio do VN. O rio Rolante possui contaminantes citotóxicos para as células Hep-2, o que pode ser uma...

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“…Macroinvertebrate assemblage measures are considered as effective and reliable indicators for environmental degradation and overall river health (e.g. Thorne and Williams, 1997;Smith et al, 1999;Bieger et al, 2010). Relative to European and American river systems, subtropical Asian rivers support rich but poorly known macroinvertebrate communities (Morse et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Spatial variation of macroinvertebrate community structure and associated environmental conditions in a subtropical river system of southeastern China

Jiang

Ding

et al. 2015

Knowl. Manag. Aquat. Ecosyst.

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Key-words:Biomonitoring, macroinvertebrate communities, spatial differentiation, Dongjiang River basin, indicatorsKnowledge of macroinvertebrate distributions and associated environmental drivers in subtropical Asian rivers is relatively scarce. To fill this knowledge gap, we examined the spatial variation of macroinvertebrate community structure and associated environmental conditions in a subtropical river system, the Dongjiang River Basin, in southeastern China. A total of 70 families and 9 classes of macroinvertebrates were identified from 74 sites sampled in January 2013. Our study has the following findings: (1) a distinct spatial differentiation of macroinvertebrate communities was present in the Dongjiang River Basin indicated by non-metric multidimensional scaling (NMDS), which corresponded to the northern region (NR), middle region (MR), and southern region (SR) gradient; (2) ANOVAs showed that diversity indices (total taxa, Margalef index and the Shannon diversity index), biotic indices (richness of EPT, percentage of EPT, and family biotic index) and most of the studied environmental conditions (elevation, slope, steam order, water temperature, electrical conductivity, dissolved oxygen, pH, substrates, ammoniacal nitrogen, total phosphorus, percentage of urban land, percentage of rural land, and percentage of forest land) differed significantly among the three regions and a degradation gradient was observed in the NR-MR-SR direction; (3) Canonical correspondence analysis (CCA) revealed that NR sites were characterized by steep slope and coarse substrate, MR sites were characterized by high water temperatures and shallow slopes, and SR sites were primarily characterized by high total phosphorus and ammoniacal nitrogen concentrations; and (4) the Indicator Species Analysis, in conjunction with CCA analysis indicated that the most representative indicator taxon is Tipulidae for NR, Semisulcospira sp. for MR, and Branchiura sp. for SR.

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Are the streams of the Sinos River basin of good water quality? Aquatic macroinvertebrates may answer the question

Cited by 19 publications

References 14 publications

Benthic macroinvertebrate community in the Sinos river drainage basin, Rio Grande do Sul, Brazil

Benthic macroinvertebrate community in the Sinos river drainage basin, Rio Grande do Sul, Brazil

Cytotoxicity assays as tools to assess water quality in the Sinos River basin

Spatial variation of macroinvertebrate community structure and associated environmental conditions in a subtropical river system of southeastern China

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