Education
Baylor University, Bachelor of Science, Biology, 1979
University of Oklahoma, Master of Science, Botany, 1983
Colorado State University, Ph.D., Range Science, 1987
Research Interests
Grassland ecology - soil carbon, plant water relations, primary productivity, biodiversity, ecosystem C fluxes and ecosystem impacts of rising atmospheric (CO2) concentration and precipitation variability.
Current Research Projects
Lysimeter CO2 Gradient Experiment (Description)
Sustainability of ecosystem services in Southern Plains grasslands
Laboratory Personnel
Chris Kolodziejczyk
Katherine Jones
Recent Publications
Wilsey, B.J., P.P. Danesghar, and H.W. Polley. 2011. Biodiversity, phenology and temporal niche differences between native- and novel exotic-dominated grasslands. Perspectives in Plant Ecology, Evolution and Systematics 13:265-276. Publication
Kelley, A.M., P.A. Fay, H.W. Polley, R.A. Gill, and R.B. Jackson. 2011. Atmospheric CO2 and soil extracellular enzyme activity: A meta-analysis and CO2 gradient experiment. Ecosphere 2(8):art96. Publication
Derner, J.D., K.R. Hickman, and H.W. Polley. 2011. Decreasing precipitation variability does not elicit major aboveground biomass or plant diversity responses in a mesic rangeland. Rangeland Ecology & Management 64:352-357. Publication
Polley, H.W., P.A. Fay, V.L. Jin, and G.F. Combs, Jr. 2011. CO2 enrichment increases element concentrations in grass mixtures by changing species abundances. Plant Ecology 212:945-957. Publication
Izaurralde, R.C., J.A. Morgan, A.M. Thompson, P.A. Fay, H.W. Polley, and J.L. Hatfield. 2011. Climate impacts on agriculture: Implications for forage and rangeland production. Agronomy Journal 103:371-381. Publication
Manzoni, S., G. Vico, G. Katul, P.A. Fay, H.W. Polley, S. Palmroth, and A. Porporato. 2011. Optimizing stomatal conductance for maximum carbon gain under water stress: A meta-analysis across plant functional types and climates. Functional Ecology doi:10.1111/j.1365-2435.2010.01822.x. Publication
Manzoni, S., G. Katul, P.A. Fay, H.W. Polley, and A. Porporato. 2011. Modeling the vegetation-atmosphere carbon dioxide and water vapor interactions along a controlled CO2 gradient. Ecological Modelling 222:653-665. Publication
Polley, H.W., R.L. Phillips, A.B. Frank, J.A. Bradford, P.L. Sims, J.A. Morgan, and J.R. Kiniry. 2011. Variability in light-use efficiency for gross primary productivity on Great Plains grasslands. Ecosystems 14:15-27. Publication
Polley, H.W., J.A. Morgan, and P.A. Fay. 2011. Application of a conceptual framework to interpret variability in rangeland responses to atmospheric CO2 enrichment. Journal of Agricultural Science 149:1-14. Publication
Johnson, M.-V.V., J.R. Kiniry, H. Sanchez, H.W. Polley, and P.A. Fay. 2010. Comparing biomass yields of low-input high-diversity communities with managed monocultures across the central United States. Bioenergy Research 3:353-361. Publication
Polley, H.W., W. Emmerich, J.A. Bradford, P.L. Sims, D.A. Johnson, N.Z. Saliendra, T. Svejcar, R. Angell, A.B. Frank, R.L. Phillips, K.A. Snyder, J.A. Morgan, J. Sanabria, P.C. Mielnick, and W.A. Dugas. 2010. Precipitation regulates the response of net ecosystem CO2 exchange to environmental variation on United States rangelands. Rangeland Ecology and Management 63(2):176-186. Publication
Polley, H.W., W. Emmerich, J.A. Bradford, P.L. Sims, D.A. Johnson, N.Z. Saliendra, T. Svejcar, R. Angell, A.B. Frank, R.L. Phillips, K.A. Snyder, and J.A. Morgan. 2010. Physiological and environmental regulation of interannual variability in CO2 exchange on rangelands in the western United States. Global Change Biology 16: 990-1002. Publication
Anderson, L.J., J.D. Derner, H.W. Polley, W.S. Gordon, D.M. Eissenstat, and R.B. Jackson. 2010. Root responses along a subambient to elevated CO2 gradient in a C3-C4 grassland. Global Change Biology 16: 454-468. Publication
Fay, P.A., A.M. Kelley, A.C. Procter, D. Hui, V.L. Jin, R.B. Jackson, H.B. Johnson, and H.W. Polley. 2009. Primary productivity and water balance of grassland vegetation on three soils in a continuous CO2 gradient: initial results from the Lysimeter CO2 Gradient Experiment. Ecosystems 12: 699-714. Publication
Isbell, F.I., H.W. Polley and B.J. Wilsey. 2009. Species interaction mechanisms maintain grassland plant species diversity. Ecology 90:1821-1830. Publication
Isbell, F.I., H.W. Polley and B.J. Wilsey. 2009. Biodiversity, productivity and the temporal stability of productivity: patterns and processes. Ecology Letters 12:443-451. Publication
Wilkinson, M.J., R.K. Monson, N. Trahan, S. Lee, E. Brown, R.B. Jackson, H.W. Polley, P.A. Fay and R. Fall. 2009. Leaf isoprene emission rate as a function of atmospheric CO 2concentration. Global Change Biology 15:1189-1200. Publication
Wilsey, B.J., T.B. Teaschner, P.P. Daneshgar, F.I. Isbell and H.W. Polley. 2009. Biodiversity maintenance mechanisms differ between native and novel exotic-dominated communities. Ecology Letters 12:432-442. Publication
Polley, H.W., A.B. Frank, J. Sanabria, and R.C. Phillips. 2008. Interannual variability in carbon dioxide fluxes and flux-climate relationships on grazed and ungrazed northern mixed-grass prairie. Global Change Biology 14: 1620-1632. Publication
Polley, H.W., H.B. Johnson, P.A. Fay, and J. Sanabria. 2008. Initial response of evapotranspiration from tallgrass prairie vegetation to CO2 at subambient to elevated concentrations. Functional Ecology 22: 163-171. Publication
Polley, H.W., B.J. Wilsey, and J.D. Derner. 2007. Dominant species constrain effects of species diversity on temporal variability in biomass production of tallgrass prairie. Oikos 116: 2044-2052. Publication
Polley, H.W., B. J. Wilsey, and C.R. Tischler. 2007. Species abundances influence the net biodiversity effect in mixtures of two plant species. Basic and Applied Ecology. 8: 209-218. Publication
Polley, H.W., W.A. Dugas, P.C. Mielnick, and H.B. Johnson. 2007. C3-C4 composition and prior carbon dioxide treatment regulate the response of grassland carbon and water fluxes to carbon dioxide. Functional Ecology 21: 11-18. pdf available on request.
Wilsey, B.J. and H.W. Polley. 2006. Aboveground productivity and root-shoot allocation differ between native and introduced grass species. Oecologia 150: 300-309. Publication
Polley, H.W., P.C. Mielnick, W.A. Dugas, H.B. Johnson, and J. Sanabria. 2006. Increasing CO2 from subambient to elevated concentrations increases grassland respiration per unit of net carbon fixation. Global Change Biology 12: 1390-1399. Publication
Polley, H.W., B.J. Wilsey, J.D. Derner, H.B. Johnson, and J. Sanabria. 2006. Early-successional plants regulate grassland productivity and species composition: a removal experiment. Oikos 113: 287-295. Publication
Polley, H.W., C.R. Tischler, and H.B. Johnson. 2006. Elevated atmospheric CO2 magnifies intra-specific variation in seedling growth of honey mesquite: An assessment of relative growth rates. Rangeland Ecology and Management 59: 128-134. Publication
Gill, R.A., L.J. Anderson, H.W. Polley, H.B. Johnson, and R.B. Jackson. 2006. Potential nitrogen constraints on soil carbon sequestration under low and elevated atmospheric CO2. Ecology 87: 41-52. Publication
Wilsey, B.J., L.M. Martin, and H.W. Polley. 2005. Predicting plant extinction based on species-area curves in prairie fragments with high beta richness. Conservation Biology 19: 1835-1841. Publication
Derner, J.D., G.E. Schuman, M. Jawson, S.R. Shafer, J.A. Morgan, H.W. Polley, G.B. Runion, S.A. Prior, H.A. Torbert, H.H. Rogers, J. Bunce, L. Ziska, J.W. White, A.J. Franzluebbers, J.D. Reeder, R.T. Venterea, and L.A. Harper. 2005. USDA-ARS global change research on rangelands and pasturelands. Rangelands 27(5): 36-42. Publication
Polley, H.W., J.D. Derner, and B.J. Wilsey. 2005. Patterns of plant species diversity in remnant and restored tallgrass prairies. Restoration Ecology 13: 480-487. Publication
Derner, J.D., C.R. Tischler, H.W. Polley and H.B. Johnson. 2005. Seedling growth of two honey mesquite varieties under CO2 enrichment. Rangeland Ecology & Management 58: 292-298. Publication
Wilsey, B.J. and H.W. Polley. 2004. Realistically low species evenness does not alter grassland species-richness-productivity relationships. Ecology 85:2693-2700. Publication
Derner, J.D., H.W. Polley, H.B. Johnson, and C.R. Tischler. 2004. Structural attributes of Schizachyrium scoparium in restored Texas blackland prairies. Restoration Ecology 12:80-84. Publication
Derner, J.D., C.R. Tischler, H.W. Polley, and H.B. Johnson. 2004. Intergenerational above- and belowground responses of spring wheat (Triticum aestivum L.) to elevated CO2. Basic and Applied Ecology 5:145-152. Publication
Morgan, J.A., D.E. Pataki, C. Körner, H. Clark, S.J. Del Grosso, J.M. Grünzweig, A.K. Knapp, A.R. Mosier, P.C.D. Newton, P.A. Niklaus, J.B. Nippert, R.S. Nowak, W.J. Parton, H.W. Polley, and M.R. Shaw. 2004. Water relations in grassland and desert ecosystems exposed to elevated atmospheric CO2. Oecologia 140:11-25. Publication
Derner, J.D., H.B. Johnson, B.A. Kimball, P.J. Pinter, Jr., H.W. Polley, C.R. Tischler, T.W. Boutton, R.L. LaMorte, G.W. Wall, N.R. Adam, S.W. Leavitt, M.J. Ottman, A.D. Matthias and T.J. Brooks. 2003. Above- and belowground responses of C3-C4 species mixtures to elevated CO2 and soil water availability. Global Change Biology 9:452-460. Publication
Polley, H.W., H.B. Johnson and J.D. Derner. 2003. Increasing CO2 from subambient to superambient concentrations alters species composition and increases above-ground biomass in a C3/C4 grassland. New Phytologist 160:319-327. Publication
Polley, H.W., B.J. Wilsey and J.D. Derner. 2003. Do species evenness and plant density influence the magnitude of selection and complementarity effects in annual plant species mixture? Ecology Letters 6:248-256. Publication
Wilsey, B.J. and H.W. Polley. 2003. Effects of seed additions and grazing history on species diversity and aboveground productivity of sub-humid grasslands. Ecology 84: 920-931. Publication
Gill, R.A., H.W. Polley, H.B. Johnson, L.J. Anderson, H. Maherali and R.B. Jackson. 2002. Nonlinear grassland responses to past and future atmospheric CO2. Nature 417:279-282. Publication
Maherali, H., C.D. Reid, H.W. Polley, H.B. Johnson and R.B. Jackson. 2002. Stomatal acclimation over a subambient to elevated CO2 gradient in a C3/C4 grassland. Plant, Cell and Environment 25:557-566. Publication
Polley, H.W. 2002. Implications of atmospheric and climatic change for crop yield and water use efficiency. Crop Science 42:131-140. Publication
Polley, H.W., H.B. Johnson and J.D. Derner. 2002. Soil- and plant-water dynamics in a C3/C4 grassland exposed to a subambient to superambient CO2 gradient. Global Change Biology 8:1118-1129. Publication
Polley, H.W., H.B. Johnson and C.R. Tischler. 2002. Woody invasion of grasslands: evidence that CO2 enrichment indirectly promotes establishment of Prosopis glandulosa. Plant Ecology 164:85-94. Publication
Polley, H.W., C.R. Tischler, H.B. Johnson and J.D. Derner. 2002. Growth rate and survivorship of drought: CO2 effects on the presumed tradeoff in seedlings of five woody legumes. Tree Physiology 22:383-391. Publication
Wilsey, B.J. and H.W. Polley. 2002. Reductions in grassland species evenness increase dicot seedling invasion and spittle bug infestation. Ecology Letters 5:676-684. Publication
Anderson, L.J., H. Maherali, H.B. Johnson, H.W. Polley and R.B. Jackson. 2001. Gas exchange and photosynthetic acclimation over subambient to elevated CO2 in a C3-C4 grassland. Global Change Biology 7:693-707. Publication
Dugas, W.A., H.W. Polley, H.S. Mayeux, and H.B. Johnson. 2001. Acclimation of whole-plant Acacia farnesiana transpiration to carbon dioxide concentration. Tree Physiology 21:771-773. Publication
Mielnick, P.C., W.A. Dugas, H.B. Johnson, H.W. Polley and J. Sanabria. 2001. Net grassland carbon flux over a subambient to superambient CO2 gradient. Global Change Biology 7:747-754. Publication
Derner, J.D., H.W. Polley, H.B. Johnson, and C.R. Tischler. 2001. Root system response of C4 grass seedlings to CO2 and soil water. Plant and Soil 231:97-104. Publication
Johnson, H.B., H.W. Polley, and R.P. Whitis. 2000. Elongated chambers for field studies across atmospheric CO2 gradients. Functional Ecology 14:388-396. Publication
Polley, H.W., J.A. Morgan, B.D. Campbell, and Mark Stafford Smith. 2000. Crop ecosystem responses to climatic change: rangelands, pp. 293-314. In: Reddy, K.R. and Hodges, H.F. (eds.) Climate Change and Global Crop Productivity. CABI Publishing, Wallingford, U.K. Publication
Tischler, C.R., H.W. Polley, H.B. Johnson, and R.E. Pennington. 2000. Seedling response to elevated CO2 in five epigeal species. International Journal of Plant Sciences 161:779-783. Publication
Pennington, R.E., C.R. Tischler, H.B. Johnson, and H.W. Polley. 1999. Genetic variation for carbon isotope composition in honey mesquite (Prosopis glandulosa). Tree Physiology 19:583-589. Publication
Polley, H.W., H.B. Johnson, C.R. Tischler, and H.A. Torbert. 1999. Links between transpiration and plant nitrogen: variation with atmospheric CO2 concentration and nitrogen availability. International Journal of Plant Sciences 160:535-542. Publication
Polley, H.W., C.R.Tischler, H.B. Johnson, and R.E. Pennington. 1999. Growth, water relations, and survival of drought-exposed seedlings from six maternal families of honey mesquite (Prosopis glandulosa): responses to CO2 enrichment. Tree Physiology 19:359-366. Publication
Tischler, C.R., H.W. Polley, H.B. Johnson, and H.S. Mayeux. 1998. Environment and seedling age influence mesquite response to epicotyl removal. Journal of Range Management 51(3):361-365. Publication
Mayeux, H.S., H.B.Johnson, H.W. Polley, and S.R. Malone. 1997. Yield of wheat across a subambient carbon dioxide gradient. Global Change Biology 3:269-278. Publication
Polley, H.W. 1997. Invited synthesis paper: Implications of rising atmospheric carbon dioxide concentration for rangelands. Journal of Range Management 50:562-577. Publication
Polley, H.W., H.S. Mayeux, H.B. Johnson, and C.R. Tischler. 1997. Viewpoint: Atmospheric CO2 soil water, and shrub/grass ratios on rangelands. Journal of Range Management 50:278-284. Publication
Polley, H.W., H.B. Johnson, and H.S. Mayeux. 1997. Leaf physiology, production, water use, and nitrogen dynamics of the grassland invader Acacia smallii at elevated CO2 concentrations. Tree Physiology 17: 89-96. Publication
Polley, H.W., H.B. Johnson, H.S. Mayeux, D.A. Brown, and J.W.C. White. 1996. Leaf and plant water use efficiency of C4 species grown at glacial to elevated CO2 concentrations. International Journal of Plant Sciences 157: 164-170. Publication
Polley, H.W., H.B. Johnson, H.S. Mayeux, and C.R. Tischler, C.R. 1996. Are some of the recent changes in grassland communities a response to rising CO2 concentrations?, pp. 177-195. In: Korner, Ch. and F.A. Bazzaz (eds.) Carbon Dioxide, Populations, and Communities. Academic Press. San Diego, California. Publication
Polley, H.W., H.B. Johnson, H.S. Mayeux, and C.R. Tischler. 1996. Impacts of rising CO2 concentration on water use efficiency of woody grassland invaders, pp. 189-194. In: Barrow, J R., E.D. McArthur, R.E. Sosebee, and R.J. Tausch. (comps.) Proceedings: Symposium on Shrubland Ecosystem Dynamics in a Changing Climate. Intermountain Res. Sta., U.S.D.A., Forest Service, Gen. Tech. Rep., Ogden, UT. Publication
Polley, H.W., H.B. Johnson, H.S. Mayeux, C.R. Tischler, and D.A. Brown. 1996. Carbon dioxide enrichment improves growth, water relations and survival of droughted honey mesquite (Prosopis glandulosa) seedlings. Tree Physiology 16:817-823. Publication
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