Zobrazeno 1 - 10
of 28
pro vyhledávání: '"R. D. Ramsey"'
Publikováno v:
Ecology and Society, Vol 13, Iss 1, p 33 (2008)
Drylands cover 41% of the terrestrial surface and support > 36% of the world's population. However, the magnitude of dryland degradation is unknown at regional and global spatial scales and at 15-30-yr temporal scales. Historical archives of > 30 yr
Externí odkaz:
https://doaj.org/article/7c1c0a304b59411b8c7f1ec125107836
Autor:
Julian C. Jamison, Dean Karlan, Brien E. Norton, R. D. Ramsey, David Coppock, Dylan Groves, Susan L. Durham, Lucas Crowley
Classic theories suggest that common pool resources are subject to overexploitation. Community-based resource management approaches may ameliorate “tragedy of the commons” effects. Using a randomized evaluation in Namibia’s communal rangelands,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afee70fb12ee0640ae22a4f6c95f980b
https://doi.org/10.21203/rs.3.rs-353564/v1
https://doi.org/10.21203/rs.3.rs-353564/v1
Publikováno v:
Geocarto International. 34:1042-1053
The purpose of this paper was to evaluate the feasibility of conversion from dryland to paddy field in Jinxian County under the water resources constraint and dryland suitability condition. We constructed a water resources balance model to evaluate i
Autor:
R. D. Ramsey, Pat Terletzky
Publikováno v:
Journal of Signal and Information Processing. :123-135
Whether a species is rare and requires protection or is overabundant and needs control, an accurate estimate of population size is essential for the development of conservation plans and management goals. Current wildlife surveys are logistically dif
Publikováno v:
Small-scale Forestry. 12:321-334
Tropical forests are disappearing at an alarming rate. In Central America, a hectare of forest is cleared for agriculture every 5 min. This study was conducted in a forested 4,000 ha watershed of central Honduras to find deforestation causes based on
Publikováno v:
Soil Science Society of America Journal. 71:245-252
Mapping salt-affected soils in remote rangelands is challenging. We used Landsat 7 ETM data to facilitate digital mapping of gypsic and natric soil areas in the upper Colorado River drainage. Optimum index factor band combinations were used to explor
Publikováno v:
International Journal of Remote Sensing. 26:2699-2704
An accuracy assessment of the Moderate Resolution Imaging Spectroradiometer (MODIS) vegetation continuous field (VCF) tree cover product using two independent ground-based tree cover databases was conducted. Ground data included 1176 Forest Inventory
Publikováno v:
Community Ecology. 5:69-79
The vegetation dynamics of semi-arid and arid landscapes are temporally and spatially heterogeneous and subject to various disturbance regimes that act on decadal scales. Traditional field-based monitoring methods have failed to sample adequately in
Autor:
Pat Terletzky, R. D. Ramsey
Publikováno v:
PLoS ONE
PLoS ONE, Vol 9, Iss 1, p e85239 (2014)
PLoS ONE, Vol 9, Iss 1, p e85239 (2014)
Our research presents a proof-of-concept that explores a new and innovative method to identify large animals in aerial imagery with single day image differencing. We acquired two aerial images of eight fenced pastures and conducted a principal compon
Autor:
Mark A. Klebanoff, A. Meier, S. J. Yaffe, T. A. Siddiqi, C. Alfonso, Robert P. Nugent, Sharon L. Hillier, John C. Hauth, Donald J. Dudley, Jay D. Iams, A. Northen, M. L. Fischer, Brian M. Mercer, M. L. Sherman, S. Nicholson, Cora MacPherson, Gary R. Thurnau, S. Leindecker, Mark B. Landon, F. Johnson, L. Reynolds, M. DiVito, Elizabeth Thom, Nancy C. Elder, E. Mueller-Heubach, S. Beydoun, Marshall D. Lindheimer, Paul J. Meis, G. S. Norman, Kenneth J. Leveno, T. Camon, R. P. Heine, R. B. Newman, Atef H. Moawad, F. LeBoeuf, Steve N. Caritis, S. F. Bottoms, Phyllis L. Jones, Steven L. Bloom, J. M. Ernest, Ronald J. Wapner, W. Trout, R. D. Ramsey, Jorge E. Tolosa, B. A. Collins, J. C. Carey, Michael D. Berkus, R. L. Copper, Charlotte Catz, M. Swain, Margaret Cotroneo, F. Doyle, William W. Andrews
Publikováno v:
New England Journal of Medicine. 345:487-493
Infection with Trichomonas vaginalis during pregnancy has been associated with preterm delivery. It is uncertain whether treatment of asymptomatic trichomoniasis in pregnant women reduces the occurrence of preterm delivery.We screened pregnant women