Author pages are created from data sourced from our academic publisher partnerships and public sources.
- Publications
- Influence
Lethal soil temperatures during burning of masticated forest residues
- M. Busse, Ken R. Hubbert, G. Fiddler, Carol J. Shestak, R. Powers
- Environmental Science
- 3 October 2005
Mastication of woody shrubs is used increasingly as a management option to reduce fire risk at the wildland-urban interface. Whether the resulting mulch layer leads to extreme soil heating, if… Expand
Glyphosate toxicity and the effects of long-term vegetation control on soil microbial communities
- M. Busse, Alice W. Ratcliff, Carol J. Shestak, R. Powers
- Biology
- 1 October 2001
Abstract We assessed the direct and indirect effect of the herbicide glyphosate on soil microbial communities from ponderosa pine ( Pinus ponderosa ) plantations of varying site quality. Direct,… Expand
Soil compaction effects on growth of young ponderosa pine following litter removal in California's Sierra Nevada
- A. Gómez, R. Powers, M. Singer, W. Horwath
- Geology
- 1 July 2002
Increased use of heavy equipment and more frequent entry into forest stands has increased the potential for soil compaction and decreased productivity. We examined compaction and tree growth… Expand
Assessing Soil Quality: Practicable Standards for Sustainable Forest Productivity in the United States
- R. Powers, A. E. Tiarks, J. R. Boyle
- Environmental Science
- 1998
Productive soils form the foundation for productive forests. But unfortunately, the significance of soil seems lost to modem society. Most of us are too far removed from the natural factors of… Expand
Long-Term Soil Productivity: genesis of the concept and principles behind the program
- R. Powers
- Environmental Science
- 1 March 2006
The capacity of a forest site to capture carbon and convert it into biomass defines fundamental site productivity. In the United States, the National Forest Management Act (NFMA) of 1976 mandates… Expand
Understory vegetation response to mechanical mastication and other fuels treatments in a ponderosa pine forest
Questions: What influence does mechanical mastication and other fuel treatments have on: (1) canopy and forest floor response variables that influence understory plant development; (2) initial… Expand
Microbial community responses in forest mineral soil to compaction, organic matter removal, and vegetation control
- M. Busse, S. E. Beattie, R. Powers, F. Sanchez, A. Tiarks
- Environmental Science, Biology
- 1 March 2006
We tested three disturbance hypotheses in young conifer plantations: H1: soil compaction and removal of surface organic matter produces sustained changes in microbial community size, activity, and ...
Ten-year responses of ponderosa pine plantations to repeated vegetation and nutrient control along an environmental gradient
- R. Powers, Phillip E. Reynolds
- Biology
- 1 August 1999
Des traitements de controle de la vegetation, des nutriments et des insectes ont ete appliques a plusieurs reprises selon un dispositif factoriel dans trois plantations differentes de Pinus ponderosa… Expand
Seedling Root Growth as a Function of Soil Density and Water Content
- C. M. Siegel-Issem, J. Burger, R. Powers, F. Ponder, Steve C. Patterson
- Environmental Science
- 2005
Compaction caused by some intensive forest management practices can reduce tree growth, but growth reduction is the result of complex interactions between soil properties and tree physiological… Expand
Effects of organic matter removal and soil compaction on fifth-year mineral soil carbon and nitrogen contents for sites across the United States and Canada
- F. Sanchez, A. Tiarks, +4 authors W. K. Chapman
- Biology
- 1 March 2006
This study describes the main treatment effects of organic matter removal and compaction and a split-plot effect of competition control on mineral soil carbon (C) and nitrogen (N) pools. Treatment… Expand