Plant community dynamics in shortgrass steppe with grazing relaxation and imposition by large and small herbivores

References

• Archer, S., Schimel, D. S., Holland, E. A. 1995 Mechanisms of shrubland expansion land-use, climate or CO2. Climate Change 29: 91-99.
   Google Scholar
• Bakker, E. S., Ritchie, M. E., Olff, H., Milchunas, D. G., Knops, J. M. H. 2006. Herbivore impact on grassland plant diversity depends on habitat productivity and herbivore size. Ecol. Lett. 9: 780-788.
   Google Scholar
• Brown, J. H., Heske, E. J. 1990. Control of a desert-grassland transition by a keystone rodent guild. Science 250: 1705-1707.
   Google Scholar
• Cingolani A., Noy-Meir, I., Díaz, S. 2005. Grazing effects on rangeland diversity: a synthesis of contemporary models. Ecol. Appl. 15: 757-773.
   Google Scholar
• Connell, J. H., Sousa, W. P. 1983. On the evidence needed to judge ecological stability or persistence. Am. Nat. 121: 789-824.
   Google Scholar
• Díaz, S., Lavorel, S., McIntyre, S., Falczuk, V., Casanoves, F., Milchunas, D. G., Skarpe, C., Rusch, G., Sternberg, M., Noy-Meir, I., Landsberg, J., Wei, Z., Clark, H., Campbell, B. D. 2007. Plant trait responses to grazing—a global synthesis. Global Change Biol. 13: 313-341.
   Google Scholar
• Edwards, G. R., Crawley, M. J. 1999. Herbivores, seed banks and seedling recruitment in mesic grassland. J. Ecol. 87: 423-435.
   Google Scholar
• Fynn, R. W. S., O'Connor, T. G. 2000. Effect of stocking rate and rainfall on rangeland dynamics and cattle performance in a semiarid savanna, South Africa. J. Appl. Ecol. 37: 491-507.
   Google Scholar
• Hart, R. H. 2008. Land-use history on the shortgrass steppe. In: Lauenroth, W. K., Burke, I. C., eds. Ecology of the shortgrass steppe: a long-term perspective. Oxford University Press, New York, Chapter 4 pp. 55-69.
   Google Scholar
• Hulme, P. E. 1994. Seedling herbivory in grassland: relative impact of vertebrate and invertebrate herbivores. J. Ecol. 82: 873-880.
   Google Scholar
• Keesing, F. 2000. Cryptic consumers and the ecology of an African savanna. BioScience 50: 205-215.
   Google Scholar
• Klipple, G. E., Costello, D. F. 1960. Vegetation and cattle response to different intensities of grazing on shortgrass ranges on the central Great Plains. USDA Tech. Bull. 1216. USDA, Washington, D. C.
   Google Scholar
• Lauenroth, W. K., Milchunas, D. G. 1992. The shortgrass steppe. In: Coupland, R. T., ed. Natural grasslands, introduction and western hemisphere. Ecosystems of the World 8A. Elsevier, Amsterdam, pp. 183-226.
   Google Scholar
• Mack, R. N., Thompson, J. N. 1982. Evolution in steppe with few large, hooved mammals. Am. Nat. 119: 757-773.
   Google Scholar
• Maron, J. L., Simms, E. L. 2001. Rodent-limited establishment of bush lupine: field experiments on the cumulative effect of granivory. J. Ecol. 89: 578-588.
   Google Scholar
• Milchunas, D. G. 2006. Responses of plant communities to grazing in the southwestern United States. General Technical Report RMRS-GTR-169. USDA Forest Service, Rocky Mountain Research Station, Fort Collins, Colorado, 126 pp.
   Google Scholar
• Milchunas, D. G., Lauenroth, W. K. 1989. Three-dimensional distribution of plant biomass in relation to grazing and topography in the shortgrass steppe. Oikos 55: 82-86.
   Google Scholar
• Milchunas, D. G., Lauenroth, W. K. 1993. A quantitative assessment of the effects of grazing on vegetation and soils over a global range of environments. Ecol. Monogr. 63: 327-366.
   Google Scholar
• Milchunas, D. G., Noy-Meir, I. 2002. Grazing refuges, external avoidance of herbivory and plant diversity. Oikos 99: 113-130.
   Google Scholar
• Milchunas, D. G., Lauenroth, W. K. 2008. Effects of grazing on wildlife and other consumers in the shortgrass steppe. In: Lauenroth, W. K., Burke, I. C., eds. Ecology of the shortgrass steppe: a long-term perspective. Oxford University Press, New York, chap. 18, pp. 459-483.
   Google Scholar
• Milchunas, D. G., Sala, O. E., Lauenroth, W. K. 1988. A generalized model of the effects of grazing by large herbivores on grassland community structure. Am. Nat. 132: 87-106.
   Google Scholar
• Milchunas, D. G., Lauenroth, W.K, Chapman, P. L., Kazempour, M. K. 1989. Effects of grazing, topography, and precipitation on the structure of a semiarid grassland. Vegetatio 80: 11-23.
   Google Scholar
• Milchunas, D. G., Lauenroth, W. K., Chapman, P. L., Kazempour, M. K. 1990. Community attributes along a perturbation gradient in a shortgrass steppe. J. Veg. Sci. 1: 375-384.
   Google Scholar
• Milchunas, D. G., Lauenroth, W. K., Chapman, P. L. 1992. Plant competition, abiotic, and long- and short-term effects of large herbivores on demography of opportunistic species in a semiarid grassland. Oecologia 92: 520-531.
   Google Scholar
• Milchunas, D. G., Lauenroth, W. K., Burke, I. C., Detling, J. K. 2008. Effects of grazing on vegetation in the shortgrass steppe. In: Lauenroth, W. K., Burke, I. C., eds. Ecology of the shortgrass steppe: a long-term perspective. Oxford University Press, New York, chap. 16, pp. 389-446.
   Google Scholar
• Morgan, J. A., Milchunas, D. G., LeCain, D. R., Mosier, A. R. 2007. Carbon dioxide enrichment alters plant community structure and accelerates shrub growth in the shortgrass steppe. Proc. Nat. Acad. Sci. USA 104: 14724-14729.
   Google Scholar
• Natural Resource Conservation Service, United States Department of Agriculture. 2002. Ecological site description, MLRA-67B, Central High Plains (southern part), loamy, rangeland. http://esis.sc.egov.usda.gov/ESDReport/fsReport.aspx?id=R067BY002CO&rptLevel=communities&approved=yes
   Google Scholar
• Noy-Meir, I. 1973. Desert ecosystems: environment and producers. Annu. Rev. Ecol. Syst. 4: 25-51.
   Google Scholar
• Noy-Meir, I. 1988. Dominant grasses replaced by ruderal forbs in a vole year in undergrazed Mediterranean grasslands in Israel. J. Biogeogr. 15: 579-587.
   Google Scholar
• Noy-Meir, I. 1990. Responses of two semiarid rangeland communities to protection from grazing. Israel J. Bot. 39: 431-442.
   Google Scholar
• Olff, H., Ritchie, M. E. 1998. Effects of herbivores on grassland plant diversity. Trends Ecol. Evol. 13: 261-265.
   Google Scholar
• Osem, Y., Perevolotsky, A., Kigel, J. 2002. Grazing effect on diversity of annual plant communities in a semi-arid rangeland: interactions with small-scale spatial and temporal variation in primary productivity. J. Ecol. 90: 936-946.
   Google Scholar
• Perevolotsky, A., Seligman, N. G. 1998. Role of grazing in Mediterranean rangeland ecosystems. BioScience 48: 1007-1017.
   Google Scholar
• Schlesinger, W. H., Reynolds, J. F., Cunningham, G. L., Huenneke, L. F., Jarrell, W. M., Virginia, R. A., Whitford, W. G. 1990. Biological feedbacks in global desertification. Science 247: 1043-1048.
   Google Scholar
• Shitzer, D., Noy-Meir, I., Milchunas, D. G. 2008. The role of geologic grazing refuges in structuring Mediterranean grassland plant communities. Plant Ecol. 198: 135-147.
   Google Scholar
• Stapp, P., Van Horne, B., Lindquist, M. D. 2008. Ecology of mammals of the shortgrass steppe. In: Lauenroth, W. K., Burke, I. C., eds. Ecology of the shortgrass steppe: a long-term perspective. Oxford University Press, New York, Chapter 8, pp. 132-180.
   Google Scholar
• Stebbins, G. L. 1981. Coevolution of grasses and herbivores. Ann. Missouri Bot. Gard. 68: 75-86.
   Google Scholar
• Valone, T. J., Meyer, M., Brown, J. H., Chew, R. M. 2002. Timescale of perennial grass recovery in desertified arid grasslands following livestock removal. Conserv. Biol. 16: 995-1002.
   Google Scholar
• Westoby, M., Walker, B., Noy-Meir, I. 1989. Opportunistic management for rangelands not at equilibrium. J. Range Manage. 42: 266-274.
   Google Scholar