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Article
Effects of community- and neighborhood-scale spatial patterns on semi-arid perennial grassland community dynamics
Oecologia (2013)
  • Eugene W. Schupp, Utah State University
  • Andrew P Rayburn
Abstract

Although plant spatial patterns strongly influence community-structuring processes, few empirical studies have addressed pattern effects on perennial community dynamics. We tested the effects of community- and neighborhood-scale patterns in experimental semi-arid grassland communities comprising the stronger competitor crested wheatgrass (Agropyron cristatum) and the weaker competitor Snake River wheatgrass (Elymus wawawaiensis). Treatments consisted of community-scale patterns (Poisson random, regular, and aggregated) and neighborhood-scale patterns (Poisson random, small, and large aggregations) applied to 6.25-m2 plots, with aggregations generated through simulated realizations of Neyman-Scott cluster processes. Two years of data were collected on aboveground biomass of both species, and variability in light (photosynthetically active radiation; PAR) was also quantified...

Disciplines
Publication Date
August, 2013
Citation Information
Eugene W. Schupp and Andrew P Rayburn. "Effects of community- and neighborhood-scale spatial patterns on semi-arid perennial grassland community dynamics" Oecologia Vol. 172 Iss. 4 (2013)
Available at: http://works.bepress.com/eugene_schupp/135/