Dana M. Blumenthal* Rangeland Resources Research Unit, USDA Agricultural Research Service, 1701 Center Avenue, Fort Collins, CO 80526, USA *Correspondence: E-mail: [email protected] Abstract Understanding why some exotic species become invasive is essential to controlling their populations. This review discusses the possibility that two mechanisms of invasion, release from natural en...

Study area was selected from Talou farm to Chahjam Kavir in Damghan. Several plant types were distinguished in mentioned site. The types were Artemisia herba alba-Pteropyrum olivieri, Anabasis aphyllaLycium depressum, Tamarix. spp.-Halocnemum strobilaceum, Ha. strobilaceum Halostachys bellangeriana, Ha. strobilaceum-Limonium iranicum. In each plant type, three dominant plant species were select...

Y the turn of the century, the Edwards Plateau region of Texas had developed into a major livestock area (27). Continuous, heavy grazing by domestic livestock and the prevention of natural fires since that time have significantly changed the vegetative complex (15, 16). Long-term, excessive removal of vegetation on the plateau by grazing animals reduced the protective herbaceous cover, broke do...

Recognizing the herbaceous plant species diversity could use as an importantindicator applied for the rangeland and forests management. Considering the presence ofvegetation and animal husbandry in Zagros region, Iran, being aware of the diversity andrichness of plant species is necessary to management or the destructed vegetationrestoration. In order to study the effect of aspect and elevation...

ecological studies on range plants enhance our knowledge on the rangeland ecosystems which are useful for their planning and management.  by doing field and laboratory experiments during 2008-2009, ecological conditions were studied in the main habitats of z. atriplicoides in the rural and winter rangelands of northern khorasan province (nkp). forage quality was also studied at different phonol...