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Providing evidence to improve practice

Individual study: The effect of cattle removal on vegetation and breeding birds in Chihuahuan desert-scrub, San Pedro River, Arizona, USA

Published source details

Krueper D., Bart J. & Rich T.D. (2003) Response of vegetation and breeding birds to the removal of cattle on the San Pedro River, Arizona, USA. Conservation Biology, 17, 607-615


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Reduce number of livestock Shrubland and Heathland Conservation

A before-and-after study in 1986–1992 in desert scrub in Arizona, USA (Krueper et al. 2003) found that removal of cattle did not affect the abundance of shrubs, herbaceous plants, or trees. Five years after cattle had been removed, the density of shrubs was not significantly higher than in the same area before cattle removal (data reported as a density index). The same pattern was seen for herbaceous plants and trees. In 1987 all cattle were removed from the area. Prior to removal the stocking rate of the area was approximately 0.5 cattle/ha. Two transects, measuring 0.8–1.6 km in length were established in the area. Vegetation was sampled along the transects in September/October in 1986, 1989, and 1992.

(Summarised by Phil Martin)