The use of biological methods based on macroinvertebrates to an Iberian stream (Central Portugal) receiving a paper mill effluent
The impact of a paper mill effluent on the macroinvertebrate communities of an Iberian stream located in Central Portugal was assessed. We used a modification of the BMWP' and BBI indices, diversity measurements (number of taxa and 1-Simpson index) and multivariate methods (cluster, MDS and CA...
| Autores: | , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2004 |
| País: | España |
| Recursos: | Universitat Autònoma de Barcelona |
| Repositório: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglês |
| OAI Identifier: | oai:ddd.uab.cat:26102 |
| Acesso em linha: | https://ddd.uab.cat/record/26102 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Mètodes biològics Índexs biòtics Península Ibèrica Macroinvertebrats Qualitat de l'aigua Métodos biológicos Índices bióticos Península Ibérica Macroinvertebrados Calidad del agua Biological methods Biotic indices Iberian Peninsula Macroinvertebrates Water quality |
| Resumo: | The impact of a paper mill effluent on the macroinvertebrate communities of an Iberian stream located in Central Portugal was assessed. We used a modification of the BMWP' and BBI indices, diversity measurements (number of taxa and 1-Simpson index) and multivariate methods (cluster, MDS and CA analyses). All techniques indicated a strong impact in the vicinity of the effluent output with a slow recovery ca 4 - 7 km downstream. Multivariate analyses clearly segregated reference (upstream) sites from strongly and moderately impacted sites. Analysis of similarity (ANOSIM) showed also significant differences among groups of sites defined by MDS analysis (P < 0.001). There was a significant correlation (P < 0.001) between BBI and BMWP' indices and the first CA axis (pollution gradient) which suggests that both indices were suitable for water quality assessment in this stream and pollution type. However, we recommend the use of the BMWP' index due to the lesser needs in terms of taxonomic expertises. |
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