Microbiotic crusts as biomarkers for surface stability and wetness duration in the Negev Desert

2009 ◽  
Vol 34 (12) ◽  
pp. 1594-1604 ◽  
Author(s):  
Giora J. Kidron ◽  
Ahuva Vonshak ◽  
Aharon Abeliovich
Keyword(s):  
Negev Desert ◽  
Surface Stability ◽  
Microbiotic Crusts

Properties and spatial distribution of microbiotic crusts in the Negev Desert, Israel

CATENA ◽  
2010 ◽  
Vol 82 (2) ◽  
pp. 92-101 ◽  
Author(s):  
Giora J. Kidron ◽  
Ahuva Vonshak ◽  
Inka Dor ◽  
Sophia Barinova ◽  
Aharon Abeliovich
Keyword(s):  
Spatial Distribution ◽  
Negev Desert ◽  
Microbiotic Crusts

The role of dew as a moisture source for sand microbiotic crusts in the Negev Desert, Israel

2002 ◽  
Vol 52 (4) ◽  
pp. 517-533 ◽  
Author(s):  
Giora J. Kidron ◽  
Ilana Herrnstadt ◽  
Eldad Barzilay
Keyword(s):  
Negev Desert ◽  
Moisture Source ◽  
Microbiotic Crusts

Microclimate control upon sand microbiotic crusts, western Negev Desert, Israel

Geomorphology ◽  
2000 ◽  
Vol 36 (1-2) ◽  
pp. 1-18 ◽  
Author(s):  
G.J Kidron ◽  
E Barzilay ◽  
E Sachs
Keyword(s):  
Negev Desert ◽  
Microbiotic Crusts

Recovery rates of microbiotic crusts within a dune ecosystem in the Negev Desert

Geomorphology ◽  
2008 ◽  
Vol 100 (3-4) ◽  
pp. 444-452 ◽  
Author(s):  
Giora J. Kidron ◽  
Ahuva Vonshak ◽  
Aharon Abeliovich
Keyword(s):  
Negev Desert ◽  
Recovery Rates ◽  
Microbiotic Crusts

Radiometric dating of hillslope calcrete in the Negev Desert, Israel

2008 ◽  
Vol 104 (11/12) ◽  
Author(s):  
J.C. Vogel ◽  
M.A. Geyh
Keyword(s):  
Open System ◽  
Negev Desert ◽  
Radiometric Dating ◽  
Jordan Valley ◽  
Partial Recrystallization ◽  
Uranium Series ◽  
Uranium Series Dating

The radiometric dating of calcrete is often problematical because impurities and open system conditions affect the apparent ages obtained. By applying both radiocarbon and uranium-series dating to calcrete in colluvium, it is shown that such conditions can be identified. In correlation with the stratigraphy, it is found that partial recrystallization severely decreases the radiocarbon ages of the upslope and shallower samples further down, whereas incorporation of limestone fragments from bedrock significantly increases the apparent ages of some of the uranium-series samples. It is concluded that the hillslope calcrete at the study site near Sede Beker in the Negev Desert, Israel, mainly developed shortly after 40 kyr ago, at a time when the Jordan Valley was being inundated to form the fossil Lake Lisan. Since their formation would have required higher rainfall than today, the results provide further evidence that the whole region was experiencing an increase in precipitation.

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