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2003.
“Soil-atmosphere exchange of CH4, CO2, NOx, and N20 in the Colorado shortgrass steppe following five years of elevated CO2 and N fertilization”
3: 2691-2706.
2003.
“Top-down is bottom-up: Does predation in the rhizosphere regulate aboveground production”
84: 846-857.
2003.
“Effects of nitrogen availability on competition between Bromus tectorum and Bouteloua gracilis”
167 (2): 247-254.
2003.
“The influence of environment, sex and innate timing mechanisms on body temperature patterns of free-ranging black-tailed prairie dogs (Cynomys ludovicianus)”
76 (1): 72-83.
2003.
“Soil and plant water relations determine photosynthetic responses of C3 and C4grasses in a semi-arid ecosystem under elevated CO2.”
92: 12-Jan.
2003.
“Soil and plant water relations, not photosynthetic pathway, primarily influence photosynthetic responses in a semi-arid ecosystem under elevated CO2”
92: 41-52.
2004.
“Indications of deep soil water usage by Limber Pine (Pinus flexilis) and Skunkbrush Sumac (Rhus aromatica) in northeastern Colorado: An oxygen isotope study”
152: 178-182.
2004.
“Response of organic and inorganic carbon and nitrogen stocks to long-term grazing of the shortgrass steppe”
33: 485-495.
2004.
“Assessing global warming with surface heat content”
85 (210): 211.
2004.
“Rhizodeposition stimulated by elevated CO2 in a semi-arid grassland”
162 (447): 458.
2004.
“Ecological impact of historical and future land-use patterns in Senegal”
59: 605-623.
2004.
“Elevated CO2 increases soil moisture and inhances plant water relations in a long-term field study in sami-arid short grass steppe of Colorado.”
259: 169-179.
2004.
“CO2 enhances productivity, alters species composition, and reduces digestibility of shortgrass steppe vegetation”
14: 208-219.
2004.
“Water relations in grassland and desert ecosystems to elevated atmospheric CO2”
140 (11): 25.
2004.
“Detritus, trophic dynamics, and biodiversity”
7: 584-600.









