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Sampling techniques and the use of Tang's procedure in insect population dynamics studies

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Researches on Population Ecology

Summary

Some calculations were performed usingTang's method as an aid in planning experiments for studying the population dynamics of the Jeffrey pine beetle. The population dynamics studies were aimed at detecting the importance of specific effects, e. g., tree diameter, tree height. TheTang procedure is a method of estimating the sample size required to detect effects of a given magnitude with analysis of variance tests. Using this procedure some sample calculations were performed which indicated the sample size needed, and the efficacy of different strategies of improving the results, e. g., increasing the number of trees sampled versus increasing the area of the tree sampled. The statistical parameters used in the calculations were estimated from some preliminary sampling data. Use of this procedure is recommended in insect population studies as a method of optimally planning experiments, and as a method of making precise conclusions about the significance of specific effects.

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References

  • Carlson, R. W. andW. E. Cole (1965) A technique for sampling populations of the mountain pine beetle.USDA, Forest Service Research Paper INT,20, 13 pp.

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Author notes

  1. Joel B. Swartz

    Present address: School of Public Health, University of Illinois Medical Center, P. O. Box 6998, 60680, Chicago, Illinois

Authors and Affiliations

  1. Division of Biological Control, University of California, 94720, Berkeley, California, USA

    Joel B. Swartz & Donald L. Dahlsten

Authors
  1. Joel B. Swartz
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  2. Donald L. Dahlsten
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Additional information

This study was supported by Contracts 68-03-0273 and 68-03-2442 with the U. S. Environmental Protection Agency, Corvallis Environmental Research Laboratory, Corvallis, Oregon. This paper has been reviewed by the Corvallis Environmental Research Laboratory and approved for publication. Approval does not signify that the contents necessarily reflect the views and policies of the U. S. Environmental Protection Agency, nor does mention of trade names or commercial products constitute endorsement or recommendation for use.

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Swartz, J.B., Dahlsten, D.L. Sampling techniques and the use of Tang's procedure in insect population dynamics studies. Res Popul Ecol 21, 300–307 (1980). https://doi.org/10.1007/BF02513627

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  • DOI: https://doi.org/10.1007/BF02513627

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