introduction movement of sand dunes is an important natural threat in the coast of oman sea. now many rural settlements of the region are in threat, and vulnerability has caused heavy losses. the sand dunes are visible in the wide area and wind erosion occurs in a wide spatial scale. wind erosion faces high intensity in the area, because of poor vegetation, low rainfall, dry soil, strong and co...

The main objective of this study is to compare the mechanical behavior two sands (Hostun or Dune sands) mixed with crushed rubber obtained from used tires. However, it essential ensure that his geotechnical application do not result in long-term negative impacts on environment. chemical properties these are given by energy dispersive analysis X-ray fluorescence spectrometry. mineral composition...

Revegetation on moving sand dunes is a widely used approach for restoring the degraded sandy land in northeastern China. The development of sand-fixation forest might improve structures soil microbial communities and affect N cycle. In present study, diversities nitrite (nirS nirK) nitrous oxide (nosZ) reductase genes were investigated under chronosequence Caragana microphylla shrub (9- 19-year...

The massive dune sea of the southern Namib Desert is approximately 800 km in length and some 140 km wide. These dunes are among the highest in the world and, in spite of very sparse vegetation cover, they support a surprising variety of reptiles and arthropods (Koch, 1961; Louw & Seely, 1982). A feature of the arthropod fauna is the high species diversity of flightless tenebrionid beetles. Thes...

Burrowed aestivating frogs of the cocoon-forming species Neobatrachus aquilonius and the non-cocooning species Notaden nichollsi were excavated in the Gibson Desert of central Australia. Their hydration state (osmotic pressure of the plasma and urine) was compared to the moisture content and water potential of the surrounding soil. The non-cocooning N. nichollsi was consistently found in sand d...

Dune recovery interventions that integrate natural, sustainable, and soft solutions have become increasingly popular in coastal communities. In the present study, reliability of an innovative non-toxic colloidal silica-based solution for sand dunes has been verified first time by means laboratory experiments. An extensive experimental campaign aimed at studying effectiveness use nanosilica cond...

This thesis describes dune development on natural and nourished beaches on an engineering timescale. Using a study of both literature and data gathered from the Dutch coast, a new hypothesis regarding the causes of variability in dune evolution is proposed. Following this hypothesis assumptions are made on the basis of which a conceptual model is developed that includes both the accretive and e...

Many species are adapted to disturbance and occur within dynamic, mosaic landscapes that contain early and late successional microhabitats. Human modification of disturbance regimes alters the availability of microhabitats and may affect the viability of species in these ecosystems. Because restoring historical disturbance regimes is typically expensive and requires action at large spatial scal...

In this work, we investigate the feeding habits of Pleurodema diplolistris, the most abundant anuran species of the São Francisco sand dunes, during a period of slightly over one year. The fieldwork was undertaken during four excursions to a sand dune in the semiarid Caatinga, Brazil, and the analyses were based on stomach contents. Pleurodema diplolistris were not active during the dry season....