The Middle East is faced with a water shortage crisis due to its semiarid and arid climate. In this paper, precipitation as an important part of the cycle was evaluated in 43 stations across using stable isotope technique study parameters which influence content precipitation. First, stepwise regression model applied determine main geographical climatological factors affecting isotopes Secondly...

Climate change is already affecting life on Earth and mitigation measures must be taken, which require proper identification of the regions most vulnerable to these changes. This study assesses impact climate water availability (water surplus, deficit precipitation minus evapotranspiration) classification across Caatinga biome, located within Brazilian semiarid region. To obtain surplus deficit...

the camel is known to be a multipurpose animal able to produce milk, meat, wool, hides and skins, to be used for riding, agricultural activities, packing and carting, racing and many cultural events. the present paper aims to propose an analysis of the situation of camel studies worldwide and of the main trends since 1961 up to 2014. the main field involved the camel sciences and some remarks o...

In the arid and semiarid environments of the world, microhabitats serve as models for the structure of vegetation communities. The goal of this study was to identify differences in the structures of the herbaceous communities growing on a crystalline substrate and those growing on a sedimentary substrate in a semiarid region of northeastern Brazil. One hundred 1 × 1 m plots were established in ...

[1] Groundwater recharge is likely to be affected by climate change. In semiarid regions where groundwater resources are often critical, annual recharge rates are typically small and most recharge occurs episodically. Such episodic recharge is uncertain and difficult to predict. This paper analyzes the impacts of different climate predictions on diffuse episodic recharge at a low‐relief semiari...

Gale crater's central sedimentary mound (Aeolis Mons or, informally, Mount Sharp) preserves one of the best records early Martian climatic, hydrologic, and history. Sharp's sediment sequence is broadly consistent with a transition from wetter surface conditions lakes fluvial activity, to groundwater influenced cementation under dryer conditions, period anhydrous accumulation erosion dominated b...

Semi-arid ecosystems are key contributors to the global carbon cycle and may even dominate the inter-annual variability (IAV) and trends of the land carbon sink, driven largely by the El Niño-Southern Oscillation (ENSO). The linkages between dynamics of semi-arid ecosystems and climate at the hemispheric scale however are not well known. Here, we use satellite data and climate observations from...

[1] Hydrological and aeolian processes redistribute sediments and nutrients within arid landscapes with important effects on the composition and structure of vegetation. Despite the relevance of wind and water erosion to the dynamics of arid and semiarid ecosystems, the interactions between these two processes remain poorly understood. In this paper we present the results of an intensive set of...

The precious irrigation is great significance for arid and semiarid area. According to the special environment of greenhouse, a fuzzy control algorithm was proposed to make an optimal irrigation strategy based on the actual measured soil humidity during the whole plant growth process. The fuzzy control system had two inputs (soil humidity error and its rate) and one output (water level differen...

Recent research has demonstrated that temperature and precipitation conditions correlate with successful reproduction in some insectivorous bat species that live in arid and semiarid regions, and that hot and dry conditions correlate with reduced lactation and reproductive output by females of some species. However, the potential long-term impacts of climate-induced reproductive declines on bat...