Long-term influences of livestock management and a non-native grass on grass dynamics in the Desert Grassland

Deborah L. Angell, Mitchel P. McClaran

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

Density of 23 perennial grass species was measured in 25 permanent plots nine times between 1972-2000. Grass density was not related to the intensity of livestock grazing. Only one species expressed a difference between the summer rest and no summer rest with heavier stocking grazing treatments: bush muhly (Muhlenbergia porteri Scribn. ex Beal) density was less under the no summer rest with heavier stocking treatment. Beginning in 1975, the non-native Lehmann lovegrass (Eragrostis lehmanniana Nees) spread from distant seedings to one plot, and by 1991, it was the dominant species on most plots. The density of native species was not related to the length of time that the non-native lovegrass was present on a plot. In general, native species declined prior to the arrival and increase of the non-native lovegrass.

Original languageEnglish (US)
Pages (from-to)507-520
Number of pages14
JournalJournal of Arid Environments
Volume49
Issue number3
DOIs
StatePublished - Nov 2001

Keywords

  • Grazing intensity
  • Grazing systems
  • Repeated measures analysis

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Earth-Surface Processes

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