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Registros recuperados: 8
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Aquatic oligochaetes associated with bryophytes in an Atlantic Forest stream Biota Neotropica
Rodrigues,Luciana Falci Theza; Santana,Lucas Deziderio; Alves,Roberto da Gama.
There are few reports in the literature about the colonization of benthic macroinvertebrates on bryophytes. The aim of the present study was to analyzed the oligochaetes established on bryophytes adhered to stones in a first-order stream. The collections were carried out in an Atlantic Forest fragment area during the dry and rainy seasons. We identified 15 taxa from a total of 422 oligochaetes specimens, of which the most abundant were Pristina sp.1, Enchytraeidae and Pristina jenkinae. Unlike other habitats, where the abundance of macroinvertebrates tends to be greater in the dry season, we did not find any significant differences in the abundance, richness, composition and diversity between the two periods. The results of this study indicate that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lotic environments; Preserved areas; Mosses; Hepatics; Naididae.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400371
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Assemblage of immature Odonata (Insecta, Anisoptera) in streams of the Mato Grosso do Sul State: spatial implications Iheringia, Sér. Zool.
Soares,Juliane A. C.; Batista-Silva,Valéria F.; Boneto,Daiane D.; Bailly,Dayani; Abelha,Milza C. F.; Oliveira,Iana A. D. V. de.
ABSTRACT This study investigated the assemblages attributes (composition, abundance, richness, diversity and evenness) and the most representative genera of Odonata, Anisoptera at Água Boa and Perobão Streams, Iguatemi River basin, Brazil. Both are first order streams with similar length that are impacted by riparian forest removal and silting. Quarterly samplings were conducted from March to December 2008 in the upper, intermediate and lower stretch of each stream. The Mantel test was used to check the influence of spatial autocorrelation on the Odonata composition. Spatial variations in the composition were summarized by the Principal Coordinates Analysis (PCoA) using Mantel test residuals. The effects of spatial correlation on richness and abundance...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquatic invertebrates; Iguatemi River basin; Lotic environments; Odonatofauna.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000300325
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Diversity and structure of Ephemeroptera, Plecoptera and Trichoptera (Insecta) assemblages from riffles in mountain streams of Central Brazil Zoologia
Bispo,Pitágoras C.; Oliveira,Leandro G..
The diversity and structure of Ephemeroptera, Plecoptera and Trichoptera (EPT) assemblages in streams of Central Brazil (Serra dos Pireneus, Pirenópolis, State of Goiás) was investigated. Abundance data of EPT were obtained in Central-West Brazilian streams in order to evaluate the effect of spatial variability, including the effect of size of the stream and anthropic action, and seasonality (dry and rainy seasons) on faunal diversity and structure. The immatures were collected with circular sieves (0. 5 mm mesh) during one hour at five collection stations over 14 months. From a spatial point of view, the data showed that anthropic action determined the patterns of diversity whereas the size of streams (1st and 3rd-4th orders) determined the faunistic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquatic insects; EPT; Immatures; Lotic environments.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200004
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Ephemeroptera, Plecoptera and Trichoptera assemblages in litter in a mountain stream of the Atlantic Rainforest from Southeastern Brazil Zoologia
Crisci-Bispo,Vera L.; Bispo,Pitágoras C.; Froehlich,Claudio G..
The study of Ephemeroptera, Plecoptera and Trichoptera associated with litter in southeastern Brazil streams aimed to answer the following questions: 1) Does richness and composition of EPT fauna differ between riffle and pool mesohabitats despite being associated to the same substratum, litter? 2) Does the similarity of the EPT fauna between both mesohabitats change with time? 3) Does the EPT functional feeding structure differ between both mesohabitats (riffles-pools)? In order to answer these questions, monthly collections, from November 1999 to June 2000, were done in Ribeirão (Stream) Bocaina with a D-net (10 litter patches in riffles and 10 in pools). The EPT fauna at Ribeirão Bocaina was more diversified and more abundant in the litter in riffles...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquatic insects; Aquatic macroinvertebrates; EPT; Lotic environments.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000300004
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Ephemeroptera, Plecoptera and Trichoptera assemblages in two Atlantic Rainforest streams, Southeastern Brazil Zoologia
Crisci-Bispo,Vera L.; Bispo,Pitágoras C.; Froehlich,Claudio G..
Assemblages of Ephemeroptera, Plecoptera and Trichoptera (EPT) of rocky substrates were studied in two streams of the Intervales State Park. Monthly collections with a Surber sampler (10 random sampling units, 1m²) were carried out from September 1999 to September 2000 and quarterly from December 2000 to September 2001 in the Bocaina and Água Comprida Streams. The EPT fauna in the Bocaina Stream was more diversified and more abundant than in the Água Comprida Stream. The EPT fauna was quite different in the two streams both in composition as in functional aspects. The results of this study indicate that there was not a clear seasonal pattern in the temporal variation of density.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquatic insects; Diversity; EPT; Lotic environments.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200007
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Histopathological alterations in Astyanax bifasciatus (Teleostei: Characidae) correlated with land uses of surroundings of streams Neotropical Ichthyology
Nimet,Jardel; Amorim,João Paulo de Arruda; Delariva,Rosilene Luciana.
ABSTRACT This study evaluated gills and liver of Astyanax bifasciatus as histological biomarkers for biomonitoring of streams along areas with different land uses. The fish were collected by electrofishing in six streams in the basin of the lower Iguaçu River. The objective was to correlate the presence and degree of histopathological alterations of gills and liver with the environmental variables among streams along different land uses. The low frequency of histopathological alterations found in fish from the forest streams suggested normal organ functioning. In fish from the rural and urban streams, the histopathological alterations occurred were in higher frequency, indicated light to moderate damage in gills and liver of fish from the rural streams,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biomarkers; Fish; Histopathology; Lotic environments; Urban impact.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100216
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Longitudinal variation of attributes from flagellate protozoan community in tropical streams - doi: 10.4025/actascibiolsci.v33i2.7228 Biological Sciences
Camargo, Janielly Carvalho; Universidade Estadual de Maringá; Machado Velho, Luiz Felipe; Universidade Estadual de Maringá.
This study verified the existence of longitudinal patterns in species composition, richness, density and biomass of flagellate protozoan in tropical streams and investigated whether the possible zonation patterns are different between two periods of the year. For this, samplings were carried out in three regions from 10 streams, during the summer and winter. The flagellate community may be considered species-rich, because it was represented by 106 taxa, belonging to 8 orders and 1 residual group. The values of density and biomass are greater than those commonly found in other lotic environments, with mean values close to 2.3x104 cels. mL-1 and 150.8 µgC L-1. We did not observe any conspicuous and significant longitudinal pattern of the attributes...
Palavras-chave: 2.05.00.00-9 Protozooplankton; Community structure; Zonation; Lotic environments Ecologia Protozooplankton; Community structure; Zonation; Lotic environments.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7228
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Oligochaeta (Annelida: Clitellata) in the Juruena River, MT, Brazil: species indicators of substrate types Biota Neotropica
Gorni,Guilherme Rossi; Sanches,Nathalie Aparecida de Oliveira; Colombo-Corbi,Vanessa; Corbi,Juliano José.
Abstract: Oligochaeta assemblages are important components in freshwater environments, where their abundance and composition may indicate aspects related to water quality and sediment. The lack of information about these communities in Brazilian aquatic environments, as well as the application of native species as bioindicators of lotic environmental, stimulated the conception of this paper. Thus, the aim was to study the community of aquatic Oligochaeta in selected stretches of the Juruena River (MT), thereby generating grounds for future environmental monitoring action in lotic ecosystems. For this purpose, samples were analyzed at bimonthly intervals during the period from January to November 2009, in stretches of the Juruena River (Amazon River Basin)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater oligochaetes; Bioindicators; Lotic environments; Freshwater environments.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000400206
Registros recuperados: 8
Primeira ... 1 ... Última
 

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