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In this study, we examined the factors that control the spatial distribution of bank gully heads along a reach of an ephemeral river (Rambla Salada) in an area threatened by desertification in Southeast Spain. The activity of 458 gully heads was assessed in the field by pre-defined criteria such as sharp edges, presence of a plunge pool, tension cracks, recent deposited sediments, flow marks, and...
Flooding and erosion are major hazards in semi-arid areas. As a result of climate and/or land use changes these hazards could increase. Vulnerable areas include the Mediterranean region of southern Europe. As part of the European Union (EU)-funded MEDALUS (Mediterranean Desertification and Land Use) research programme on impacts of desertification a model to simulate channel changes is being developed...
The aim of this study is to develop a methodological reference framework, for use at the basin scale, from which environmental sensitivity can be evaluated. In this paper the results of a 3-year investigation into the degradation processes related to desertification in the Agri basin environment (Southern Italy) are presented. Different degradation stages or desertification risks are also evaluated...
The effect of land use change, from arable to abandoned pasture, on soil properties and vegetation establishment was studied in hilly areas of the island of Lesvos. The main purpose of this study was to establish key indicators or land parameters that can be used for defining environmentally sensitive areas to desertification. 106 soil sites were selected in fields cultivated or non-cultivated for...
We examined the role of soil crusts in infiltration processes in three contrasting environments in the Northern, Central, and Central-Western Negev, Israel. The removal of a thin cyanobacterial-dominant crust from a sandy dune at Nizzana in the Central-Western Negev and of a well-developed lichen-dominant and a cyanobacterial-dominant crust from a loess-covered hillslope at Sayeret Shaked in the Northern...
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