Tanım: A depression caused by erosion by water or ice. Low-lying land bordered by higher ground; especially elongate, relatively large gently sloping depressions of the Earth's surface, commonly situated between two mountains or between ranges of hills or mountains, and often containing a stream with an outlet.
Tanım: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)
Crustodontia chrysocreas (Berk. & M. A. Curtis) Hjortstam & Ryvarden 2005 alan adının bilinen örnekleri, toplanan örnekleri ve gözlemleri. Bu türleri GBIF'de görüntüleyin
