干旱区生态环境知识资源中心(Arid): Current distribution, habitat, and status of Category 2 candidate plant species on and near the U.S. Department of Energy's Nevada Test Site

Arid

DOI	10.2172/769478
报告编号	EGG--11265-1149
来源ID	OSTI_ID: 769478
	Current distribution, habitat, and status of Category 2 candidate plant species on and near the U.S. Department of Energy's Nevada Test Site
	Blomquist, Kevin W. [EG&G Energy Measurements, Gaithersburg, MD (United States)]; Lindemann, Tim A. [EG&G Energy Measurements, Gaithersburg, MD (United States)]; Lyon, Glen E. [EG&G Energy Measurements, Gaithersburg, MD (United States)]; Steen, Dan C. [EG&G Energy Measurements, Gaithersburg, MD (United States)]; Wills, Cathy A. [EG&G Energy Measurements, Gaithersburg, MD (United States)]; Flick, Sarah A. [EG&G Energy Measurements, Gaithersburg, MD (United States)]; Ostler, W. Kent [EG&G Energy Measurements, Gaithersburg, MD (United States)]
英文摘要	Results of surveys conducted between 1991 and 1995 were used to document the distribution and habitat of 11 Category 2 candidate plant species known to occur on or near the Nevada Test Site (NTS). Approximately 200 areas encompassing about 13,000 ha were surveyed. Distributions of all species except Frasera-pahutensis and Phaceliaparishii were increased, and the ranges of Camissonia megalantha, Galium hilendiae ssp. kingstonense, Penstemon albomarginatus, and Penstemon pahutensis were expanded. The status of each species was assessed based on current distribution population trends, and potential threats. Recommendations were made to reclassi& the following five species to Category 3C: Arctomecon merriamii, F. pahutensis, P. pahutensis, Phacelia beatleyae, and Phaceliaparishii. Two species, C. megalantha and Cymopterus ripIeyi var. saniculoides, were recommended for reclassification to Category 3B status. No recommendation was made to reclassify Astragalus funereus, G. hilendiae ssp. kingstonense, P. albomarginatus, or Penstemon fruticiformis var. amargosae from their current Category 2 status. Populations of these four species are not threatened on NTS, but the NTS populations represent only a.small portion of each species鈥?range and the potential threats of mining or grazing activities off NTS on these species was notassessed. Conservation measures recommended included the development of an NTS ecosystem conservation plan, continued conduct of preactivity and plant surveys on NTS, and protection of plant type localities on NTS.
出版年	1995
报告类型	Technical Report
语种	英语
国家	美国
URL	http://www.osti.gov/scitech/servlets/purl/769478
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/266471
推荐引用方式 GB/T 7714	Blomquist, Kevin W. [EG&G Energy Measurements, Gaithersburg, MD ,Lindemann, Tim A. [EG&G Energy Measurements, Gaithersburg, MD ,Lyon, Glen E. [EG&G Energy Measurements, Gaithersburg, MD ,et al. Current distribution, habitat, and status of Category 2 candidate plant species on and near the U.S. Department of Energy's Nevada Test Site,1995.