Plume dispersion in four pine thinning scenarios: development of a simple pheromone dispersion model

  • Authors: Peterson, Holly; Thistle, Harold; Lamb, Brian; Allwine, Gene; Edburg, Steve; Strom, Brian
  • Publication Year: 2010
  • Publication Series: Scientific Journal (JRNL)
  • Source: Intermountain Journal of Sciences (16) 4:73-86

Abstract

A unique field campaign was conducted in 2004 to examine how changes in stand density may affect dispersion of insect pheromones in forest canopies. Over a l4-day period, 126 tracer tests were performed, and conditions ranged from an unthinned loblolly pine (Pinus taeda) canopy through a series of thinning scenarios with basal areas of32.l, 23.0, and 16.1 m2ha-l.ln this paper, one case study was used to visualize the nature of winds and plume diffusion. Also, a simple empirical model was developed to estimate maximum average concentration as a function of downwind distance, travel time, wind speed, and turbulence statistics at the source location. Predicted concentrations from the model were within a factor of 3 for 82.1 percent and 88.1 percent of the observed concentrations at downwind distances of 5 and 10m, respectively. In addition, the model was used to generate a field chart to predict optimum spacing in arrays of anti-aggregation pheromone dispensers.

  • Citation: Peterson, H.G.; Thistle, H.W.; Lamb, B.; Allwine, G.; Edburg, S.; Strom, B. 2010. Plume dispersion in four pine thinning scenarios: development of a simple pheromone dispersion model. Intermountain Journal of Sciences (16) 4:73-86.
  • Keywords: Pheromones, tracer experiments, forest canopy, stand density
  • Posted Date: June 6, 2011
  • Modified Date: July 15, 2011
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.