Benthic macroinvertebrates were collected from streams located in an urban area from regions featuring different environmental conditions. Physicochemical variables and land use types pertaining to sampling sites were analyzed concurrently. Multivariate analyses (cluster analysis and non-metric multidimensional scaling) and rank-abundance diagrams were used to characterize community patterns to...

Back-propagation Artificial Neural Networks (ANN) were tested with the aim of modelling the occurrence of benthic macroinvertebrate families in a south Brazilian river. The dataset, consisting of 67 sets of observations of macroinvertebrate abundance (families Hydrobiidae, Tubificidae, Chironomidae, Baetidae and Leptophlebiidae) and water quality variables (pH, temperature, dissolved oxygen, bi...

Oligochaeta of forest vernal pools and small draining ditches were sampled together with other aquatic macroinvertebrates yearly in spring 2013–2018 at six sites the eastern part Tartu County, Estonia. In 298 samples, a limited number oligochaete taxa (23) was found. The most common species Lumbriculus variegatus (2/3 all individuals sampled), Cognettia glandulosa, Tubifex tubifex Aulodrilus li...

In shallow sublittoral sediments of the north-west coast of the Island of Elba, Italy, a new gutless marine oligochaete, Olavius ilvae n. sp., was found together with a congeneric but not closely related species, O. algarvensis Giere et al., 1998. In diagnostic features of the genital organs, the new species differs from other Olavius species in having bipartite atria and very long, often folde...

O estabelecimento de Unidades Conservação é extrema importância para diminuir os efeitos da fragmentação e consequente perda biodiversidade, no entanto, necessário também conhecer a diversidade biológica protegida por estas áreas. objetivo deste estudo foi realizar um diagnóstico visando contribuir o conhecimento distribuição das espécies Oligochaeta na Reserva Biológica Pindorama, localizado r...