Reevaluating assumptions about the ecology and management of sagebrush and salt desert shrub systems in the Great Basin and Intermountain West is a proper role for science. These are complex rangeland ecosystems, and our management applications need to account for this complexity. Understanding and reckoning this complexity is vital to the future existence of these rangeland systems and their ability to provide critical goods and ecosystem services to society. The most influential ecological claim of the past 40 yr is based on ideas presented by Mack and Thompson (1982), that Great Basin and Intermountain West plant communities evolved with few or perhaps no large hooved-grazing animals.

Our thesis asserts that Mack and Thompson's position is based on

  1. an oversimplification of complex, heterogeneous, and diverse ecosystems;
  2. a poor understanding of science, both in 1982 and now; and
  3. the attribution of all recent ecological changes to a single land use.

We review the archaeological and historical record of vegetation and large grazing animals in the region and then revisit Mack and Thompson's (1982) interpretations of the rangeland plants and plant communities, forage quality and nutrition, and soil biotic crusts east and west of the Rocky Mountains, adding the information necessary for a more comprehensive interpretation. We finish by proposing an alternative paradigm to guide the management and conservation of sagebrush and salt desert systems of the Great Basin and Intermountain West and beyond.

Perryman, P., Schultz, B., Meiman, P. 2021, A Change in the Ecological Understanding of Rangelands in the Great Basin and Intermountain West and Implications for Management: Revisiting Mack and Thompson (1982), Rangeland Ecology & Management Vol 76, Pages 1-11

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Also of Interest:

Bridging the Gap between Rangeland Management and Rangeland Research: The Need for Regular Inclusion of Synthetic Review Articles in the Journal of Range Management. Schultz, B.W., and Zamudio, D. 1998, Rangelands. 20(5):30-35.
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In the aftermath of wildfire, many homeowners are alarmed by the sudden change in appearance of the wildland vegetation surrounding their homes. At this time, a frequently asked question is "Will it grow back?" This fact sheet describes the response of some common northern Nevada...
Smith, E., Davidson, J. 1996, Extension | University of Nevada, Reno. FS96-40
Land Navigation - Nevada Youth Range Camp. Foster, S. S. and S. R. Swanson 2015, University of Nevada Cooperative Extension. Curriculum 15-03, 12 pp.
Economic Analysis of Management Options Following a Range Fire in Elko County. Richardson, J., B. Herbst, T. Harris, and M. Helmar. 2014, Western Agricultural Economics Association Western Forum, 12(2): 12-19.
Nevada Range Management School: Focus on Sustainability. McAdoo, K., B. Schultz, R. Torell, S. Swanson, G. McCuin, and K. Curtis. 2010, University of Nevada Cooperative Extension Special Publication. SP-10-09. 9pp.