Avaliação de impactos ambientais em sistemas aquáticos. Caso de estudo do Rio Órbigo, Espanha (Evaluation of environmental impacts on aquatic ecosystems.A case study of the Órbigo river, Spain)
DOI:
https://doi.org/10.5935/1984-2295.20170034Keywords:
Impacto ambiental, Macroinvertebrados, Índice de biodiversidade, Engenharia, Rios urbanos.Abstract
Impacto ambiental pode ser definido como qualquer alteração nas propriedades físicas, químicas e biológicas do meio ambiente, resultante de atividades humanas que, direta ou indiretamente, afetem a saúde, a segurança e o bem-estar da população. As comunidades de macroinvertebrados bentônicos têm sido frequentemente utilizadas na avaliação de impactos ambientais e monitoramento biológico. O presente trabalho tem como objetivo estudar a comunidade de invertebrados bentônicos da água do rio Órbigo, Espanha, e aplicar índices de diversidade biológica para a avaliação da sua qualidade, tendo em vista sua inserção em projetos de engenharia de requalificação de rios urbanos. A composição taxonômica e estrutura de comunidades bentônicas evidenciaram baixa riqueza e diversidade taxonômica, relacionada à reduzida qualidade da água. Não foi encontrada diferença significativa entre os grupos bentônicos encontrados nas estações de coleta.
ABSTRACT
Environmental impact can be defined as any alteration in the physical, chemical and biological environment, resulting from human activities that directly or indirectly affect the health, safety and welfare of the population. The benthic macro invertebrate communities have often been used in the assessment of environmental and biological monitoring. The present work aims to study the community of benthic invertebrates of the river Órbigo, Spain and apply biological diversity indices for assessing the water quality, due to its inclusion in engineering projects of rehabilitation of urban rivers. The taxonomic composition and structure of benthic communities showed low richness and taxonomic diversity, related to reduced water quality. No significant difference was found between groups found in benthic sampling stations.
Keywords:environmental impact, macroinvertebrates, biodiversity index, engineering, urban rivers
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Copyright (c) 2017 Leonardo Paulino Werneck Ceolin, Maria Manuela Morais, Terêncio Rebello de Aguiar Júnior
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