نتایج جستجو برای: alborz mountain rangeland
تعداد نتایج: 29949 فیلتر نتایج به سال:
Kachergis, E. (corresponding author, emily. [email protected]): Rangeland Resources Research Unit, USDA-Agricultural Research Service, 8408 Hildreth Road, Cheyenne, WY, 82009, USA Rocca,M.E. ([email protected]): Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, 80523, USA Fernandez-Gimenez,M.E. ([email protected]): De...
Herbivory and fire are natural interacting forces contributing to the maintenance of rangeland ecosystems. Wildfires in the sagebrush dominated ecosystems of the Great Basin are becoming larger and more frequent, and may dramatically alter plant communities and habitat. This synthesis describes what is currently known about the cumulative impacts of historic livestock grazing patterns and short...
Earthquake has always endangered cities. This article mainly focuses on the question “whether seismic damages could be diminished through the presentation a preventive operational pattern dealing with physical and nonphysical features of civil defense”. Tehran, the most populous metropolis among Iranian cities is to the south of Alborz mountain range, located on potentially dangerous fault- lin...
This research addresses the design and development of an incremental software architecture recovery and evaluation environment using data mining techniques. The environment is interactive and provides: pattern-based architectural recovery using a query language and approximate graph pattern matching; optimization clustering; partitioning; and view-based architectural design evaluation. These te...
Abdolrazagh Hashemi-Shahraki, Parvin Heidarieh, Samira Azarpira, Hasan Shojaei, Mohammad Hashemzadeh and Enrico Tortoli Author affiliation: Pasteur Institute of Iran, Tehran, Iran (A. Hashemi-Shahraki, S. Azarpira, M. Hashemzadeh); Alborz University of Medical Sciences, Karaj, Iran (P. Heidarieh); Isfahan University of Medical Sciences, Isfahan, Iran (H. Shojaei); and San Raffaele Scientific In...
The objective of the current study was to determine seasonal changes in glucose, cholesterol, non-esterified fatty acids (NEFA), serum inorganic phosphorous (SIP), calcium, magnesium and iron concentrations in Nguni and crossbred cattle on the sweet and sour rangelands of the Eastern Cape Province of South Africa. Body weights, body condition scores (BCS) and serum concentrations of energy-rela...
The objective of this paper is to examine the sustainability of rangeland agriculture (i.e., managed grazing) on a world-wide basis, with a focus on North America. Sustainability is addressed on three fronts: 1) ecological, 2) economic, and 3) social acceptance. Based on previous and on-going research, we suggest that employment of science-based rangeland grazing management strategies and tacti...
Mountain vipers of the genus Montivipera, generally, and the species of the Raddei clade, specifically, are interesting examples of species neo-endemism in Iran, Anatolia, and the Caucasus. Given the critical conservation status of these species, it is necessary to identify their suitable habitats for prioritizing conservation measures. We modeled ecological niche of each species based on four ...
1. introduction nowadays, remote sensing is considered as an important subject in many field studies, like agronomy, hydrogeology, mineral exploration, geography and geology. this knowledge has been applied in most of the geological fields. the significant application of remote sensing is preparation of lineament maps that is an important issue in the geological studies. in the remote sensing s...
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