Bassin xérique

Bassin xérique
Présentation
Type

Les bassins xériques sont un biome aquatique correspondant à des étendues d'eau au milieu de régions arides. Généralement à sec, ces bassins se remplissent lors des rares pluies, parfois espacées de dizaines d'années.

Dans le cas du lac Eyre en Australie et d'autres lacs dans l'État de Chihuahua au Mexique, il s'agit de lacs salés. De ce fait, on peut y observer un nombre important d'espèces endémiques.

Les bassins xériques sont parfois appelés nappes d'eau épisodiques ou bassins artésiens.

Géographie

Dans le global 200 du WWF, 3 écorégions - en danger - sont répertoriées dans la catégorie des bassins xériques :

Voir aussi

Liens externes

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