%0 Journal Article
%T Ecolog¨ªa y conservaci¨®n de <i>Centaurium somedanum</i> M. La¨ªnz (Gentianaceae), planta end¨¦mica de la Cordillera Cant¨¢brica (Espa a)
%A Jim¨¦nez-Alfaro
%A B.
%A Bueno S¨¢nchez
%A G. A.
%A Fern¨¢ndez Prieto
%A J. A.
%J Pirineos : Revista de Ecolog¨ªa de Monta£¿a
%D 2005
%I Consejo Superior de Investigaciones Cient¨ªficas
%X Centaurium somedanum is a cantabrian endemism, with less than twenty localities known in the western Cantabrian Mountains. In order to assess its conservation status, a short-term study has been developed, by applying a Basic Study and an Habitat Integrated Study, which have defined the habitat for the plant, number of populations and some demographic information. The results from the study have confirmed the extinction of the plant in some localities where it had been recorded. C. somedanum is a short-lived chamaephyte plant, limited to fourteen populations at present, and only four of them exceed five hundred adult individuals. They occur on very specific habitats, in the surroundings of calcareous hard water springs, between 500 and 1600 meters of altitude. The specific nature and scarcity of its habitat are the main reasons of the rareness and threat of this species. Some other rare species and plant communities from Cantabrian Mountains share with C. somedanum the need of this type of spring communities conservation, which are currently under different threats. [fr] Centaurium somedanum est un end¨¦misme cantabrique pr¨¦sent dans moins d'une vingtaine de localit¨¦s situ¨¦es ¨¤ l'extr¨ºme ouest des Monts Cantabres. Pour mieux conna tre son ¨¦tat de conservation ¨¤ court terme, on a d¨¦velopp¨¦ une ¨¦tude Basique et une ¨¦tude Int¨¦gr¨¦e de l'habitat, en d¨¦finissant la disponibilit¨¦ de l'environnement ad¨¦quat pour la plante et son rapport avec son ¨¦tat de conservation. Les r¨¦sultats de l'¨¦tude nous ont permis de constater la disparition de l'esp¨¨ce dans quelques localit¨¦s o¨´ elle avait ¨¦t¨¦ report¨¦e. C. somedanum est une cham¨¦phyte de vie courte, actuellement r¨¦duite ¨¤ quatorze populations, dont seulement quatre arrivent ¨¤ d¨¦passer cinqs cents individus. Elles occupent des habitats tr¨¨s sp¨¦cifiques aux alentours de sources d'eaux carbonat¨¦es, entre 500 et 1600 m¨¨tres d'altitude. La nature sp¨¦cifique de son habitat et le manque de celui-ci semblent le principales causes de la raret¨¦ et la fragilit¨¦ de l'esp¨¨ce. Avec C. somedanum, d'autres esp¨¨ces et communaut¨¦s v¨¦g¨¦tales rares des Monts Cantabres nous signalent la n¨¦cessit¨¦ de conserver les milieux li¨¦s ¨¤ ce type de sources, maintenant soumises ¨¤ diff¨¦rentes menaces. [es] Centaurium somedanum es un endemismo cant¨¢brico conocido en menos de veinte localidades del extremo occidental de la Cordillera Cant¨¢brica. Con el fin de conocer su estado actual de conservaci¨®n, se han realizado un Estudio B¨¢sico y un Estudio Integrado del Habitat, definiendo los requerimientos del habitat de la planta, el n¨²mero de poblaciones y
%K Centaurium somedanum
%K Cantabrian Mountains
%K Plant Conservation
%K Habitat
%K Spring communities.
%K Centaurium somedanum
%K Monts Cantabres
%K Conservation v¨¦g¨¦tale. Habitat
%K Communaut¨¦s fontinales
%K Centaurium somedanum
%K Montes Cant¨¢bricos
%K Conservaci¨®n vegetal. Habitat
%K Comunidades fontinales.
%U http://pirineos.revistas.csic.es/index.php/pirineos/article/view/39/39