Flora y vegetación del Parque Nacional de Ordesa y Monte Perdido (Sobrarbe, Pirineo aragonés)Bases científicas para su gestión sostenible

Laburpena

This work in structured in five chapters: 1. INTRODUCTION. We began with a review of the botanical antecedents, delimits the study area, we make an introduction to geology, the climate (with special incidence to the study of the microclimate of valleys and the thermal investment), the history of this territory, also the influence is approached that has had the different uses that the man has done. 2. VASCULAR PLANTS CATALOGUE. Is a critical relation, ordered and exhaustive of near 1400 taxa of the vascular flora present in the National Park, with synonymy, relation of localities, altitudinal rank, corology, 615 maps of distribution with grid UTM of a square kilometer, ecological and fitosociologycal commentary, degree of abundance and figures of legal protection. In the end, diverse floristics syntheses are made. 3. PLANT COMMUNITIES. A critical, exhaustive and ordered description becomes, with fitosociological classification, of the 112 present plant communities. Of each one is commented the synonymy comments, ecology, floristic composition, spectrum biological and corological, distribution, variability, sintaxonomy, figures of legal protection, its inclusion in some habitat of communitarian importance, all of them reunited in 1300 releves synthesized in 86 tables. 24 new plant communities have described for first time for science. In the end, a synthesis is made of the plant communities, the habitats of european importance and the sintaxonomical scheme. 4. VEGETAL LANDSCAPE. It is come to the description of the vegetation by units of landscape, as much by altitudinal floors as by fisiografics units, taking in consideration ecological dynamics and the distribution. We contributed to a map of present vegetation of the Park and its peripheral zone on 1:40.000 scale. 5. CONSERVATION. An analysis of 11 threatened plant species is made. For each one a diagnosis becomes, contributes its legal situation, its distribution with hight precision, its ecology, census, and recommendations for their preservative management occur. Also 12 sensible areas to the pressure of the tourism or special botanical interest are analyzed, where we identified impacts, and we propose actions to diminish the impacts and global measures of management, between which the extension of he himself by diverse areas is included.