natural resources are valuable capitals for all nations. rangelands as the most extensive natural ecosystems in iran provide numerous services, including fodder production and red meat supply, soil conservation and water regulation. although uncontrolled exploitation of these resources has imposed much pressure and caused many losses within the ecosystems. impacts of overutilization of nomadic ...

BACKGROUND Despite long-standing iodine supplementation in Iran, the prevalence of goiter remains high in some areas. This suggests other nutritional deficiencies may be considered as responsible factors for goiter persistence. In the present study we investigated the possible role of vitamin A deficiency (VAD) and low vitamin A status in the etiology of endemic goiter in Semirom, Iran. MATER...

- Finding the most important medicinal herbs in Semirom. - Determination of major diseases in Semirom. - Determination of medicinal herb successes on diseases treatment. This study was a measuremental study in 2002 based on filled questionnaire distributed among the Semirom people. - 30 regional species of medicinal herbs have been found for remediation of diseases. - More than 80 percent of Se...

Livestock grazing potentially has substantial influence on fuel characteristics in rangelands around the globe. However, information quantifying the impacts of grazing on rangeland fuel characteristics is limited, and the effects of grazing on fuels are important because fuel characteristics are one of the primary factors determining risk, severity, continuity, and size of wildfires. We investi...

Rangelands are expansive, unimproved lands located in arid or semi–arid regions, spanning a variety of landscapes including savannahs, high and low altitude deserts, mountain meadows, and tundra. Rangelands are generally unsuitable for crop production due to aridity, topography, and extreme temperatures. Rangelands support varying mixtures of native and nonnative grasses, grass–like plants, for...

Water stress may affect the growth, physiology, morphology, biochemistry, and productivity of Nigella sativa (black cumin), a medicinal aromatic plant. Measuring these parameters under various irrigation regimes could provide useful information for successful genotype selection breeding. Therefore, agronomically significant features were evaluated in ten black cumin genotypes (Afghanistan, Paki...