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290 September 2009 Ecological REstoRation 27:3 Ecological Restoration Vol. 27, No. 3, 2009
 

Summary: 290 September 2009 Ecological REstoRation 27:3
Ecological Restoration Vol. 27, No. 3, 2009
ISSN 1522-4740 E-ISSN 1543-4079
2009 by the Board of Regents of the
University of Wisconsin System.
Revegetation expeRiments
Planting Trials in Northern Arizona
Ponderosa Pine Forests
scott R. abella and Judith D. springer
AbsTrAcT
Mechanical tree thinning and prescribed fire have been widely proposed for restoring ponderosa pine (Pinus ponderosa)
forests in the southwestern United States. However, these restoration activities often result in intensely disturbed sites,
such as landings for equipment and temporary roads, which managers may need to revegetate. Managers may also wish
to augment the forest understory through revegetation after thinning and burning treatments. We present five planting
trials conducted as part of restoration projects in northern Arizona ponderosa pine forests in order to assess survival of 11
species and the influence of various microsites created by restoration activities. In one trial, five-year survival of four trans-
planted graminoid species ranged from 1% to 23% among species and from 0% (unthinned forest) to 22% (unburned
slash) among microsites. Also illustrating microsite effects, over three times more Fendler's meadow-rue (Thalictrum
fendleri) survived when outplanted below Gambel oak (Quercus gambelii) than in openings created by restoration pine
thinning. Only 4% of purple locoweed (Oxytropis lambertii) survived in an unsuccessful attempt at revegetating a decom-

  

Source: Abella, Scott R. - School of Life Sciences, University of Nevada at Las Vegas

 

Collections: Environmental Sciences and Ecology