Nippert JB, Ocheltree TW, Skibbe AM, et al. Linking plant growth responses across topographic gradients in tallgrass prairie. Oecologia. 2011;166:1131 -1142. doi:10.1007/s00442-011-1948-6.

Brunsell N, Ham JM, Arnold KA. Validating remotely sensed land surface fluxes in heterogeneous terrain with large aperture scintillometry. International Journal of Remote Sensing. 2011;32:6295 -6314. doi:10.1080/01431161.2010.508058.

Bremer D, Ham JM. Net carbon fluxes over burned and unburned native tallgrass prairie. Rangeland Ecology & Management. 2010;63:72 -81. doi:10.2111/REM-D-09-00010.1.

Brunsell N, Ham JM, Owensby CE. Assessing the multi-resolution information content of remotely sensed    variables and elevation for evapotranspiration in a tall-grass prairie    environment. Remote Sensing of Environment. 2008;112:2977 -2987. doi:10.1016/j.rse.2008.02.002.

Turner DP, Ritts WD, Cohen WB, et al. Evaluation of MODIS NPP and GPP products across multiple biomes. Remote Sensing of Environment. 2006;102:282 -292. doi:10.1016/j.rse.2006.02.017.

Ham JM, Benson EJ. On the construction and calibration of dual probe heat capacity sensors. Soil Science Society of America Journal. 2004;68:1185 -1190. doi:10.2136/sssaj2004.1185.

Ham JM, Heilman JL. Experimental test of density corrections on CO2 flux as measured using open-path eddy covariance. Agronomy Journal. 2003;95:1393 -1403. doi:10.2134/agronj2003.1393.

Bremer D, Ham JM. Measurement and modeling of soil CO2 flux in a temperate grassland under mowed and burned regimes. Ecological Applications. 2002;12:1318 -1328. doi:10.1890/1051-0761(2002)012[1318:MAMOSC]2.0.CO;2.

Owensby CE, Ham JM, Knapp AK, Auen LM. Biomass production and species composition change in a tallgrass prairie ecosystem after long-term exposure to elevated atmospheric CO2. Global Change Biology. 1999;5:497 -506. doi:10.1046/j.1365-2486.1999.00245.x.

Bremer D, Ham JM. Effect of spring burning on the surface energy balance in a tallgrass prairie. Agricultural and Forest Meteorology. 1999;97:43 -54. doi:10.1016/S0168-1923(99)00034-9.

Knapp AK, Bargman N, Maragni LA, et al. Elevated CO2 and leaf longevity in the C4 grassland dominant Andropogon gerardii. International Journal of Plant Sciences. 1999;160:1057 -1061. doi:10.1086/314202.

Ham JM, Knapp AK. Fluxes of CO2, water vapor, and energy from a prairie ecosystem during the seasonal transition from carbon sink to carbon source. Agricultural and Forest Meteorology. 1998;89:1 -14. doi:10.1016/S0168-1923(97)00062-2.

Bremer D, Ham JM, Owensby CE, Knapp AK. Responses of soil respiration to clipping and grazing in a tallgrass prairie. Journal of Environmental Quality. 1998;27:1539 -1548. doi:10.2134/jeq1998.00472425002700060034x.

Hamerlynck EP, McAllister CA, Knapp AK, Ham JM, Owensby CE. Photosynthetic gas exchange and water relations responses of three tallgrass prairie species to elevated carbon dioxide and moderate drought. International Journal of Plant Science. 1997;158:608 -616. Available at: http://www.jstor.org/stable/2474921.

Owensby CE, Ham JM, Knapp AK, Bremer D, Auen LM. Water vapor fluxes and their impact under elevated CO2 in a C4 tallgrass prairie. Global Change Biology. 1997;3:189 -195. doi:10.1046/j.1365-2486.1997.00084.x.

Owensby CE, Ham JM, Knapp AK, Rice CW, Coyne PI, Auen LM. Ecosystem level responses of tallgrass prairie to elevated CO2. In: Koch GW, Mooney HA Carbon Dioxide and Terrestrial Ecosystems. Carbon Dioxide and Terrestrial Ecosystems. London: Academic Press; 1996:147 -162.

Knapp AK, Hamerlynck EP, Ham JM, Owensby CE. Responses in stomatal conductance to elevated CO2 in 12 grassland species that differ in growth form. Vegetatio. 1996;125:31 -41. doi:10.1007/BF00045202.

Senock RS, Ham JM. Measurements of water use by prairie grasses with heat balance sap flow gauges. Journal of Range Management. 1995;48:150 -158. doi:10.2307/4002803.