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1998.
“A perspective on N-fertilizer production and use, and the Kyoto Climate Change Convention Protocol”
September: 6-Jun.
1998.
“Soil processes and global change”
27: 221-229.
1998.
“Photosynthetic pathway and ontogeny affect water relations and the impact of CO2 on Bouteloua gracilis (C4) and Pascopyrum smithii (C3)”
114: 483-493.
1998.
“Global Climate Change: How can increased atmospheric CO2 affect plants?”
March: 18-67.
1998.
“Global Climate Change: What does it mean for Western rangelands?”
mid-March: 14-Dec.
1998.
“Global Warming Under the Scope: What does global climate change mean for western rangelands?”
mid-February: 30-45.
1998.
“Livestock grazing: Animal and plant biodiversity of shortgrass steppe and the relationship to ecosystem function”
83: 65-74.
1999.
“Dynamic replacement and loss of soil carbon on eroding cropland”
13: 885-901.
1999.
“Relationships between root biomass and soil organic matter pools in the shortgrass steppe of eastern Colorado”
2: 226-236.
1999.
“Ecosystem consequences of plant life form canges at three sites in the semiarid United States”
121 (4): 551-563.
1999.
“Using an environmental science course to promote science literacy”
29 (2): 105-110.
1999.
“Effects of slash and burn management on soil aggregate C and N in tropical deciduous forest.”
88: 12-Jan.
1999.
“Demography of Bouteloua gracilis in a mixed prairie: Analysis of genets and individuals”
87: 223-243.
1999.
“Response of the shortgrass steppe to changes in rainfall seasonality”
2: 139-150.
1999.
“Biodiversity in soil ecosystems- the role of energy flow and community stability”
10: 217-228.
1999.
“Potential impacts on Colorado Rocky Mountain weather due to land use changes on the adjacent Great Plains”
104: 16673.
1999.
“Grassland vegetation changes and nocturnal global warming”
283: 229-231.
1998.
“Biomass estimation on grazed and ungrazed rangelands using spectral indices”
19 (3): 427-438.









