Desert ungulates live in adverse ecosystems that are particularly sensitive to degradation and global climate change. Here, we asked how two ungulate species with contrasting feeding habits, grazing gemsbok (Oryx g. gazella) and browsing springbok (Antidorcas marsupialis), respond to an increase in food availability during a pronounced rain period. We used a stable isotope approach to delineate...

1. introduction drought is one of the most complex problems not only in the management of water resources, but also creates economic and social issues . but the problem definition, identification and prediction of unresolved. the occurrence of drought can be caused by several factors, mainly rooted in the general circulation of the atmosphere and space physics, and earth's energy balance is sou...

there are about two of millions rainfed fig trees in estahban. this main location of iran rainfed production is faced with death and destruction as a result of recent droughts and since rain is the only source of water supplied to the trees in rain-fed conditions. the effects of different levels of water stress on the plants stomata and guard cell response were investigated throughout this work...

Drought severity is increasing in Southern Africa which affecting rain-fed agriculture, the main source of livelihood most countries this region. The study assessed seasonal spatio-temporal dynamics agro-meteorological drought between 2017 and 2020 Mberengwa Zvishavane districts. An empirical research design supported by quantitative geographical information system techniques for data analysis ...

1. Frequency and duration of summer droughts are predicted to increase in the near future in many parts of the world, with considerable anticipated effects on riparian plant community composition and species richness. Riparian plant communities along lowland streams are characterised by high species richness due to their system-specific environmental gradients. As these streams and their hydrol...

Inhomogeneous photosynthetic activity has been reported to occur in drought-stressed leaves. In addition, it has been suggested that these water stress-induced nonuniformities in photosynthesis are caused by "patchy" stomatal closure and that the phenomenon may have created the illusion of a nonstomatal component to the inhibition of photosynthesis. Because these earlier studies were performed ...

Drought is one of the major abiotic constraints that adversely affect maize production in rain-fed agro-environment Asian tropics. In view recurrent drought, stress-resilient (SR) hybrids were developed and deployed to minimize yield penalties ensure minimum sustainable mild severe drought conditions. Data collected from 180 farmers two districts northern Karnataka. Findings suggest household l...

Sociohydrology has advanced understandings of water related phenomena by conceptualizing changes in hydrological flows and risks as the result interplay between society. However, social power heterogeneity human societies, which are crucial to unravel feedback mechanisms underlying human-water systems, have not been sufficiently considered. In response, this paper proposes an interdisciplinary ...

The rice land is linked to the climate change due to its methane emission potential. The systems of growing rice and associated soil and crop management practices that have evolved are varied and complex. However, from the methane emission point of view, water regime is a crucial parameter. According to IPCC guidelines the rice ecosystem need to be categorized into four strata for methane emiss...