Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Phillip L. Sims"'
Publikováno v:
Data in Brief, Vol 32, Iss , Pp 106204- (2020)
Stable carbon isotopic data (δ13C) of 41 individual plant species was collected from long-term grazed and ungrazed pastures in Oklahoma, USA. These data can serve as a library of stable carbon isotope values for Southern mixed-grass prairie species.
Externí odkaz:
https://doaj.org/article/5f0d7877bbe44cbfacee71443e5d6f3f
Autor:
Catherine E. Stewart, Phillip L. Sims, E.G. Pruessner, Merle F. Vigil, James A. Bradford, Ronald F. Follett
Publikováno v:
Quaternary International. 565:84-93
Mixed grass pastures which occupy the eolian sand dunes of the southern Great Plains provide stabilizing soil cover, soil carbon (C) storage, and are a critical resource for livestock production. Large areas of dunes cover the American Great Plains,
Autor:
Merle F. Vigil, Ronald F. Follett, James A. Bradford, E.G. Pruessner, Phillip L. Sims, Catherine E. Stewart
Publikováno v:
Data in Brief
Data in Brief, Vol 32, Iss, Pp 106204-(2020)
Data in Brief, Vol 32, Iss, Pp 106204-(2020)
Stable carbon isotopic data (δ13C) of 41 individual plant species was collected from long-term grazed and ungrazed pastures in Oklahoma, USA. These data can serve as a library of stable carbon isotope values for Southern mixed-grass prairie species.
Autor:
Phillip L. Sims, Albert B. Frank, James R. Kiniry, James A. Bradford, H. Wayne Polley, Rebecca L. Phillips, Jack A. Morgan
Publikováno v:
Ecosystems. 14:15-27
Gross primary productivity (GPP) often is estimated at regional and global scales by multiplying the amount of photosynthetically active radiation (PAR) absorbed by the plant canopy (PARa) by light-use efficiency (e g ; GPP/PARa). Mass flux technique
Autor:
Joaquin Sanabria, Rebecca L. Phillips, Albert B. Frank, Patricia C. Mielnick, Tony J. Svejcar, Phillip L. Sims, William A. Dugas, Jack A. Morgan, Raymond F. Angell, Nicanor Z. Saliendra, Douglas A. Johnson, William E. Emmerich, Keirith A. Snyder, James A. Bradford, H. Wayne Polley
Publikováno v:
Rangeland Ecology & Management. 63:176-186
Rangelands occupy 50% of Earth’s land surface and thus are important in the terrestrial carbon (C) cycle. For rangelands and other terrestrial ecosystems, the balance between photosynthetic uptake of carbon dioxide (CO2) and CO2 loss to respiration
Autor:
Raymond Angell, James A. Bradford, Phillip L. Sims, Douglas A. Johnson, Jack A. Morgan, Keirith A. Snyder, Albert B. Frank, Rebecca L. Phillips, William E. Emmerich, Tony J. Svejcar, H. Wayne Polley, Nicanor Z. Saliendra
Publikováno v:
Global Change Biology. 16:990-1002
For most ecosystems, net ecosystem exchange of CO 2 (NEE) varies within and among years in response to environmental change. We analyzed measurements of CO 2 exchange from eight native rangeland ecosystems in the western United States (58 site-years
Autor:
William E. Emmerich, Herman S. Mayeux, Gerald E. Schuman, Albert B. Frank, Phillip L. Sims, Raymond F. Angell, Douglas A. Johnson, Pat Mielnick, Tony J. Svejcar, Tagir G. Gilmanov, Jack A. Morgan, M.R. Haferkamp, James A. Bradford, Nicanor Z. Saliendra, Kereith Snyder, W.A. Dugas
Publikováno v:
Rangeland Ecology & Management. 61:465-474
Rangelands account for almost half of the earth’s land surface and may play an important role in the global carbon (C) cycle. We studied net ecosystem exchange (NEE) of C on eight North American rangeland sites over a 6-yr period. Management practi
Autor:
Phillip L. Sims, R. L. Gillen
Publikováno v:
Rangeland Ecology & Management. 57:148-152
Knowledge of the relationship between stocking rate or grazing intensity and plant production is fundamental to the sustainable management of rangelands. The general management paradigm is that plant production declines as stocking rate increases. Ou
Publikováno v:
Crop Science. 43:2206-2211
Eastern gamagrass [Tripsacum dactyloides (L.) L.] is a perennial, warm-season bunchgrass native to the Americas. Although much is known about the effects of fertilization and harvest frequency on the yield of eastern gamagrass, information on the eff
Autor:
Phillip L. Sims, James A. Bradford
Publikováno v:
Agricultural and Forest Meteorology. 109:117-134
Atmospheric CO2 concentrations have increased because of changes in land use and burning of fossil fuels. Grasslands are important terrestrial ecosystems that, along with other temperate and arid rangeland resources, comprise more than 50% of the wor