We define vernal pools as precipitation-filled seasonal wetlands inundated during periods when temperature is sufficient for plant growth, followed by a brief waterlogged-terrestrial stage and culminating in extreme desiccating soil conditions of extended duration. These factors have played a significant selective role in shaping the vernal pool flora and fauna. Inundation during the growing se...

Serpentine is formed during chemical transformation of ultrabasic magmatic rocks. The characteristics of serpenti ne soi l are its high Mg and low Ca contenI. Various factors have lead to the formation of specific serpentine flora and vegetation. In the serpentine flora both basophi10us and acidophilous plant species are present, and a small number of families and often genera predominate. Most...

Understanding the situation, behavior and the nature of sand dunes and also their location, transport and deposition are very important. On the other hand, the importance of sand dunes is due to the impacts that they have on water and soil resources, flora and fauna and human infrastructure. This study, looks at the development patterns of sand dunes in Mesr erg region. In the first part, data ...