The aim of this study was to investigate the relationship between total community and Plant Functional Types (PFTs) Aboveground Net Primary Production (ANPP) with soil variables. Sampling done in two altitude gradients (20-3300m) and 25 sites at the rangelands of the northern Ardabil province in 2016. In each site, PFTs ANPP and soil were sampled. […]
In western Iran, mountainous rangelands provide significant resources for livestock productions. Many ecosystems that are of high environmental and economic value are threatened by climate change and social economic pressures. This is especially important for semi-arid rangelands, which have a multifunctional system. Quantifying the direct and indirect effects of grazing disturbance on plant biodiversity in […]
Iran is one of the principal centers of Astragalus genus. Astragalus adscendens is a valuable endemic plant. There is less information about the effect of climate change on Astragalus genus especially A. adscendens. In this study, we used the ensemble modeling based on seven species distribution models to predict the spatial distribution of A. adscendens. […]
Proper range management needs an accurate and updated method of rangelands production measurement. In range production measurements, selecting an accurate and low-cost method is very important. In the present study, three estimation methods including Adelaide technique, and double sampling using the 20 and 30% of vegetation cover were compared with clipping and weighing method (as […]
Lack of cultivation of some Apiaceae family plants caused damage and uncontrolled exploitation of pastures and severe fluctuations in these plant markets. Therefore, efforts are essential to study the domestication of these species. For germination enhancement of three species including Dorema aucheri Boiss., Echinophora cinerea (Boiss.) Hedge & Lamondand Ferulag oangulata (Schlescht.) Boiss., six experiments […]
Salicornia herbacea is a sensitive species to seed shedding. In order to determine the effect of harvesting date on seed shedding, seed germination and seed oil production, an experiment was conducted in Gomishan Lagoon rangelands, Golestan province, Iran. Seed samples were harvested in twenty 1 m2 plots in 12 times since Nov 6th as the […]
Artemisia melanolepis Boiss. is an endemic, rare and endangered species inhabiting high altitudes at Sabalan Mt., Iran. This study aimed to identify the effect of environmental variables on the distribution of A. melanolepis, in southeast faced slopes of Sabalan Mt., Iran, in 2016. In the habitats of A. melanolepis two sites (A and B) were […]
Kerman province has a high ranking in terms of the area of the medicinal herb Ferula assa-foetida</em>; a species of Umbelliferae family. The oleo-gum-resin is extracted from its roots and used in medicine and industry. It has a great economic value for beneficiaries and exporters. As branding is one of the important issues in the […]
