Results 91 to 100 of about 26,415 (223)

Effects of Sagebrush Restoration and Conifer Encroachment on Small Mammal Diversity in Sagebrush Ecosystem

Rangeland Ecology & Management, 2019
Conifer encroachment in sagebrush ecosystems reduces habitat heterogeneity, niche space, and resource availability, all of which negatively affect many wildlife populations. Sagebrush restoration is recommended as a management action to mitigate conifer encroachment and restore wildlife across millions of hectares in the Great Basin.
Bryan T. Hamilton, Beverly L. Roeder, Margaret A. Horner   +2 more
openaire   +1 more source

The impact of juniper removal on shrubs and understory vegetation and its implications for sagebrush dependent vertebrate herbivores

Global Ecology and Conservation
The expansion of trees into previously grass- and shrub- dominated ecosystems is a global phenomenon threatening ecosystem integrity and function in encroached systems, including the North American sagebrush biome.
Kimberly A. Haab, Christian A. Hagen, Bryan A. Endress, Kate H. Yates, Timothy S. Bowden   +4 more
doaj   +1 more source

Vegetation analysis with radar imagery [PDF]

Vegetation maps prepared from radar imagery obtained over several climatic ...
Morain, S. A., Simonett, D. S.
core   +1 more source

Assessment of AVIRIS data from vegetated sites in the Owens Valley, California [PDF]

Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) data were acquired from the Bishop, CA area, located at the northern end of the Owens Valley, on July 30, 1987.
Defeo, N. J., Elvidge, Christopher D., Rock, B. N.   +2 more
core   +1 more source

Range vegetation type mapping and above-ground green biomass estimations using multispectral imagery [PDF]

The author has identified the following significant results. Range vegetation types have been successfully mapped on a portion of the 68,000 acre study site located west of Baggs, Wyoming, using ERTS-1 imagery.
Gordon, R. C., Houston, R. S.
core   +1 more source

Vegetation analysis in the Laramie Basin, Wyoming from ERTS-1 imagery [PDF]

The author has identified the following significant results. The application of ERTS-1 imagery to vegetation mapping and identification was tested and confirmed by field checking.
Evans, M. A., Redfern, F. R.
core   +1 more source

Is Diet Selection by Greater Sage-Grouse Influenced by Biomass Availability or Toxins? [PDF]

, 2016
Foraging herbivores must meet nutritional requirements by not only finding enough plant biomass to consume, but also finding plants with high protein content and low concentrations of potentially toxic plant secondary metabolites (PSMs).
Fremgen, Marcella, Peña, Jacqueline
core   +1 more source

Multistage, multiband and sequential imagery to identify and quantify non-forest vegetation resources [PDF]

Earth Resources photographs from Apollo 6, 7, and 9 and photographs taken during Gemini 4, were used in the research along with high altitude and conventional aerial photography.
Driscoll, R. S., Francis, R. C.
core   +1 more source

Anthropogenic and Natural Determinants of the Population of a Sensitive Species: Sage Grouse in Nevada [PDF]

This paper uses Nevada data to conduct regression analyses of the relationship between sage grouse (Centrocercus urophasianus) population sizes and potential causal factors.
Alison Eagle, G. Cornelis van Kooten, Mark Eiswerth   +2 more
core  

The use of high altitude, color and spectrozonal imagery for the inventory of wildland resources. Volume II - The range resource Annual progress report [PDF]

High altitude multispectral imagery for identifying and mapping rangeland ...
Carneggie, D. M., Colwell, R. N., Roberts, E. H.   +2 more
core   +1 more source