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Title: Status of the flora and fauna on the Nevada Test Site: Results of continuing basic environmental research, January--December 1987

In 1987, three pristine sites in the Mojave Desert and Mojave-Great Basin transition zone were selected as ''pristine'' plots. They were surveyed and gridded for animal studies, and perennial plants were measured. In addition, ephemeral and perennial plants, lizards, and mammals were sampled on a two-year-old burned area in Yucca Flat and perennial plants measured on a one-year-old burned site in Mid Valley. On the five areas sampled, there were a total of 29 perennial plant species measured on belt transects. Cover on undisturbed areas varied from 22 to 38 percent as ranging from 3010 to 5580 kg-dry wt/ha on pristine sites and from 40 to 127 kg/ha on burned areas. Plant density varied from one to four plants per square meter. Perennial plants on the two burned areas considered largely of species which resprout from below-ground after a fire. Desert ephemeral plants were sampled on six sites, and species were also recorded on five plots in Yucca Flat. Of 36 species recorded, by far the most common was Bromus rubens, a European species introduced to the western United States in the late 19th century. It was present on all sites, but at low density on the dry sandy soilsmore » of Jackass Flats. Comparison with data of Dr. Beatley suggests its density in rock valley had increased from less than ten per square meter in the 1960s to greater than 500 per square meter in 1987. 101 refs., 15 figs., 31 tabs.« less
Authors:
;
Publication Date:
OSTI Identifier:
6055728
Report Number(s):
DOE/NV/10630-2
ON: DE89011307
DOE Contract Number:
AC08-84NV10327
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Research Org:
Reynolds Electrical and Engineering Co., Inc., Las Vegas, NV (USA). Environment and Health Div.
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; HIGH-LEVEL RADIOACTIVE WASTES; UNDERGROUND DISPOSAL; NEVADA TEST SITE; SITE SURVEYS; PLANTS; INVENTORIES; WILD ANIMALS; TAXONOMY; BIOLOGY; MANAGEMENT; MATERIALS; NATIONAL ORGANIZATIONS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; US DOE; US ORGANIZATIONS; WASTE DISPOSAL; WASTE MANAGEMENT; WASTES 052002* -- Nuclear Fuels-- Waste Disposal & Storage; 053000 -- Nuclear Fuels-- Environmental Aspects