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handle: 10261/73742
[FR] Apres une introduction sur I' évolution des idées sur la conservation de la nature, les auteurs se bornent au cas concret de la montagne pyrénéenne centrale (1'Aragon) et plus particulierement asa flore. En ce qui concerne la haute monnombre d'endémiques, paree que la plupart de ces especes se cantonnent aux falaises et aux éboulis. Les foréts, par contre, ont été plus exploitées et certaines populations des especes inféodées ont beaucoup souffert, ce qui empéche leur récupération. Enfin, les vallées encaissées des Pyrénées de l' Aragon conservent un bon nombre de plantes endémiques dont la plus rare de la chaine, Borderea chouardii, et il faut en tenir compte quand on procedeal'ouverture ou al'élargissement de voies de communication.
[EN] The authors introduce sorne ideas on the nature conservation before studying the case of a mountain area, the Central Pyrenees, Spain. On high mountain, in spite of a very important number of endemic plant species, the flora is well conserved because most of the species are living on screes and cliffs. On the other hand, the woods were intensively exploited and many oftheir species are now slowly recovering. Final1y, the river canyons of the area are frequent and they shelter many endemic plants, such as the rarest species of the Pyrenees, Borderea chouardii. Attention must be pay to these plants when projecting new roads or improving the ancient ways passing trought the defilees.
Peer reviewed
4 páginas
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