Nebka (geomorphology)
In geomorphology, a nebka is understood to be a small, flat sand drift, which occurs mainly in the arid regions of the world. They occur when sandy wind hits obstacles such as desert plants or objects anchored in the ground (tree stumps and stones). The loose sand collects around and behind the obstacles. If small dune bodies are formed, one speaks of Kupsten .
Nebka plants form a closed life cycle in the desert. They catch the morning dew and water thus themselves. Through the water and the fruits of the plants insects and small reptiles are attracted, which in turn are food sources of birds and various mammals. The latter build their buildings in the sand hill and fertilize the plants with their excrement. Typical representatives of the Nebkas are tamarisk and Salvadoraceae .
literature
- Herbert Louis (Author), Klaus Fischer (Ed.): General Geomorphology II. (= General Geomorphology: text part and separate picture part , vol. 2). de Gruyter, Hamburg 1979, ISBN 3110071037 , p. 494.
- Wolf Dieter Blümel: Deserts: emergence - characteristics - habitat (= Uni-Taschenbücher M. , Bd. 3882). Ulmer, Stuttgart 2013, ISBN 3825238822 , p. 165.
