نتایج جستجو برای: bromus tectorum
تعداد نتایج: 1458 فیلتر نتایج به سال:
bromus جنسی بزرگ از خانواده غلات با اهمیت علوفه ای و غیر علوفه ای است. این جنس با 44 گونه در زیستگاههای مختلف ایران یافت می شود. در این پژوهش 44 واحد جمعیتی متعلق به 13 گونه از جنس bromus در استانهای خراسان و لرستان مورد بررسی و شمارش کروموزومی قرار گــرفتند. عـــدد کروموزومـــی گونـه ها از 2n=2x=14 تا 2n=6x=42 متغیر بـود. گونه های b. danthoniae, b. briziformis, b. madritensis, b. sterilis, b. ...
Abstract Invasive winter annual grasses, such as cheatgrass ( Bromus tectorum L.) are considered serious threats to regional biodiversity. Pollinator populations that depend on the native flora likely be negatively impacted these species may displaced by invasive grass species. Colonization is also predicted increase risk of wildfires, dead plant parts provide fuel in already dry and arid regio...
Anticipating where an invasive species could become abundant can help guide prevention and control efforts aimed at reducing invasion impacts. Information on potential abundance be combined with information the current status of to management towards currently uninvaded locations threat is high. We support by developing predictive maps cover for cheatgrass (Bromus tectorum), a problematic invad...
This is the report on Optimisation of the Post-validation Process, one of a series of workshops organised by the European Centre for the Validation of Alternative Methods (ECVAM). ECVAM’s main goal, as defined in 1993 by its Scientific Advisory Committee, is to promote the scientific and regulatory acceptance of alternative methods which are of importance to the biosciences and which reduce, re...
Invasion by the exotic annual grass Bromus tectorum has increased the cover and connectivity of fine litter in the sagebrush steppes of western North America. This litter tends to cover biological soil crusts, which could affect their metabolism and growth. To investigate this possible phenomenon, biological soil crusts dominated by either the moss Bryum argenteum or the lichen Diploschistes mu...
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