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Effects of Resource Availability and Propagule Supply on Native Species Recruitment in Sagebrush Ecosystem Invaded by Bromus tectorum
Biological Invasion (2011)
  • M. B. Mazzola
  • J. C. Chambers
  • R. R. Blank
  • D. A. Pyke
  • Eugene W. Schupp, Utah State University
  • K. G. Allcock
  • P. S. Doescher
  • R. S. Nowak

Resource availability and propagule supply are major factors influencing establishment and persistence of both native and invasive species. Increased soil nitrogen (N) availability and high propagule inputs contribute to the ability of annual invasive grasses to dominate disturbed ecosystems. Nitrogen reduction through carbon (C) additions can potentially immobilize soil N and reduce the competitiveness of annual invasive grasses. Native perennial species are more tolerant of resource limiting conditions and may benefit if N reduction decreases the competitive advantage of annual invaders and if sufficient propagules are available for their establishment. Bromus tectorum, an exotic annual grass in the sagebrush steppe of western North America, is rapidly displacing native plant species and causing widespread changes in ecosystem processes...

  • Effects,
  • Resource,
  • Availability,
  • Propagule,
  • Native,
  • Species,
  • Recruitment,
  • Sagebrush,
  • Ecosystem
Publication Date
February, 2011
Citation Information
Mazzola, M.B., J.C. Chambers, R.R. Blank, D.A. Pyke, E.W. Schupp, K.G. Allcock‡, P.S. Doescher, and R.S. Nowak. 2011. Effects of resource availability and propagule supply on native species recruitment in sagebrush ecosystems invaded by Bromus tectorum. Biological Invasions 13: 513- 526.