Browsing by Subject "Gradiente longitudinal"
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- PublicationOpen AccessGradiente longitudinal de distribución de la vegetación ribereña del río Bernesga (León) en su tramo de montaña(Murcia: Universidad de Murcia, Servicio de Publicaciones, 1986) Fernández Aláez, C.; Calabuig, E. Luis; Fernández Aláez, M.; Facultad de BiologíaThe distribution o€ macrophytic vegetation associated to the mountain stretch o€ the Bernesga river (León, Spain) is anaiysed on the basis o€ the data coliected in 36 transects distributed on both banks and perpendicular to the river bed. The similarity among the sarnples placed along the river is on the whole low, except in those having an outstanding presence o€ Carex acuta subsp. broteriana; nevertheless, the strongest affinity among close transects allows to taik o€ a continous change in the vegetation. The best delimited areas embrace, on the one hand, the first kilometers where there are no real banks and both sides o€ the river are covered mainly by swampy meadows and harvest grassland with a high degree of dampness; and, on the other, the lower part where the riparian community gets its own physiognomy and Agrostis stolonifera, Mentha longifolia and mostly Carex acuta subsp. broteriana constitute the most important species.