Estudio comparativo de los ríos de la cuenca del Órbigo en base a las variaciones en la estructura y composición de las comunidades de macrófitos
- Camino Fernández Aláez
- Margarita Fernández Aláez
- A. del Río
ISSN: 2385-4758, 0213-5930
Année de publication: 1990
Número: 16-1
Pages: 87-98
Type: Article
D'autres publications dans: Scientia gerundensis
Résumé
The spatial and temporal dynamic of the aquatic and riparian macrophytic communities in the Órbigo basin (León) was analvsed. This study has been based on the variations of specific diversity and its components. The structural heterogeneity analysis and the evaluationof the specific composition chaqges between consecutive sarnpling sites were also canied out. The most disturbed rivers: Orbigo, Tuerto and Luna have high rates of change, which are gradually reduced, and they show a extended picture in relation to the less disturbed ones: Omafias, Duema and Eria. The effect of the reservoirs is identified by the reduction of biotic diversity but approaches normal levels with increasing distancia dow stream