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Caracterizacion ecologica de los alcornocales Iberolevantinos (Este de Espana) basada en bioindicadores liquénicos
Fos, Simon
Barreno, Eva
1986
Abstract
ECOLOGICAL CHARACTERIZATION OF THE IBERO-LEVANTINIAN CORK-OAK FORESTS (EASTERN SPAIN)
USING EPIPHYTIC LICHENS AS BIOINDICATORS. This study compares the epiphytic lichen floras of cork-oak forests from eastern Spain. The methodology was designed in such a way as to avoid subjectivity at all stages, from the sampling protocol to data analysis. Field work was carried out in 15 Catalonian localities, in mature stands of
Carici-Querco suberis sigmetum, and in 9 localities of the Valencian Cornmunity, in mature stands of Asplenio-Querco suberis sigmetum. In each locality, ten trees were selected, and the lichens growing on virgin bark from 50 to 200 cm above the ground were identified. Ali together, 153 species were encountered, with 69 species present
in both territories, and 33 found in at least three samplig plots. Multivariate methods of classification and ordination were used to analyze a matrix of stations and species based on presence/absence data. The classification clearly separated two main groups of stations, Catalonian and Valencian, with the exception of two Catalonian localities that were more related to the Valencian ones. This accords well with the climate of the two regions: the Catalonian cork-oak forests are subjected to a strong maritime influence, experiencing frequent fog episodes, whereas the Valencian ones are more continental and drier. The higher incidence of nitrophytic lichens in the Valencian cork-oak forests is probably due to dust accumulation on the trunks. Within the two groups of stations the lichen flora is diversified according to differences in temperature, rainfall, and relative humidity regimes. The results support the assumption that epiphytic lichens can provide impm1ant information on the phytoclimatical features of a territory.
Series
Studia Geobotanica. An international journal
16
Publisher
EUT Edizioni Università di Trieste
Source
Simon Fos, Eva Barreno, "Caracterizacion ecologica de los alcornocales Iberolevantinos (Este de Espana) basada en bioindicadores liquénicos" in "Studia Geobotanica. An international journal, Vol 16 (1998)", EUT Edizioni Università di Trieste, Trieste, 1998, pp. 71-83
Languages
es
File(s)