McCulley RL, Burke IC, Lauenroth WK. Conservation of nitrogen increases with precipitation across a major grassland gradient in the Central Great Plains of North America. Oecologia. 2009;159:571 -581. doi:10.1007/s00442-008-1229-1.

White EP, Adler P, Lauenroth WK, et al. A comparison of the species-timerelationship across ecosystems and taxonomic groups. Oikos. 2006;112:185 -195. doi:10.1111/j.0030-1299.2006.14223.x.

Adler P, White EP, Lauenroth WK, Kaufman DM, Rassweiler A, Rusak JA. Evidence for a general species-time-area relationship. Ecology. 2005;86:2032 -2039. doi:10.1890/05-0067.

McCulley RL, Burke IC, Nelson JA, Lauenroth WK, Knapp AK, Kelly EF. Regional patterns in carbon cycling across the Great Plains of North America. Ecosystems. 2005;8:106 -121. doi:10.1007/s10021-004-0117-8.

Barrett JE, McCulley RL, Lane DR, Burke IC, Lauenroth WK. Influence of climate variability on plant production and N-mineralization in Central US grasslands. Journal of Vegetation Science. 2002;13:383 -394. doi:10.1111/j.1654-1103.2002.tb02062.x.

Paruelo JM, Lauenroth WK, Epstein HE, Burke IC, Aguiar MR, Sala OE. Regional climatic similarities in the temperate zones of North and South America. Journal of Biogeography. 1995;22:915 -925. Available at: http://www.jstor.org/stable/2845992.

Burke IC, Kittel TGF, Lauenroth WK, Snook P, Yonker CM, Parton WJ. Regional analysis of the central Great Plains. BioScience. 1991;41:685 -692. doi:http://www.jstor.org/stable/1311763.