Arid Dune Ecosystems: The Nizzana Sands in the Negev Desert by Siegmar-W. Breckle, Aaron Yair, Maik Veste

By Siegmar-W. Breckle, Aaron Yair, Maik Veste

Sand dune dynamics performs a key function in lots of arid deserts. This quantity offers a synthesis of a particular sand dune environment, the Nizzana web site within the Negev wilderness. Describing its weather and geophysical/geochemical houses of soils, geological background, wildlife, and past/present land-use styles, it elucidates ecological and geomorphological methods and their interrelations, in keeping with long term tracking, in situ experiments and satellite tv for pc imagery. specific recognition is interested in the effect of the topsoil organic crust in controlling water availability at local/regional scales. The interdisciplinary method followed as a result research bargains a great instance of a hugely advanced and dynamic process, which can simply be utilized to different sandy ecosystems. this can be a necessary resource of data for soil ecologists and microbiologists, conservation biologists, wasteland ecologists and geographers, geomorphologists, soil scientists and climatologists, teachers, coverage makers and others attracted to deserts and desertification.

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Additional resources for Arid Dune Ecosystems: The Nizzana Sands in the Negev Desert (Ecological Studies)

Sample text

Is indicative of a substantial lowering of flow energy. It is characterized by a gradual decrease in the amount of coarse gravely material, accompanied by a parallel increase in the silt and sand components. This phase marks the beginning of loess and sand penetration into the Negev desert. This phase was interpreted by Zilberman (1992) as a period of extensive development of the Nizzana-Lavan floodplains, which preceded that of the presentday dune system. The age of this unit is also indicated by late Palaeolithic prehistoric sites found within the loess deposits (Goring-Morris and Goldberg 1990).

1983), the coastal sand dunes in NE Brazil (Jimenez et al. 1999), or the Alexandria coastal dunes in South Africa (Illenberger and Rust 1988) – while in the Negev Desert, the dunes are fully stabilized by microphytes and macrophytes. Because of the high rate of infiltration 3 Formation and Geomorphology of the North-Western Negev Sand Dunes 33 in dune sand, most of the rain in humid climates is lost to the groundwater and is not available to the plants. Hence, the amount of rainfall is not a decisive factor in sand dune stabilization, whether in humid or in arid climates, except for temporary increases in the cohesiveness of wet sand.

In: Anderson MG, Burt TP (eds) Hydrological forecasting. Wiley, New York, 183–220 Yair A, Raz-Yassif N (2004) Hydrological processes in a small arid catchment. Scale effects of rainfall and slope length. Geomorphology 61:155–169 Zilberman E (1992) The Late Pleistocene sequence of the northwestern Negev flood plains: a key to reconstructing the paleoclimate of southern Israel in the last glacial. Israel J Earth Sci 41:155–167 Chapter 2 Geo-Ecology of the North-Western Negev Sand Field A. Yair, M.

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