Accession Number : ADA299918

Title :   Prism Sampling: Section 6.2.3, U.S. Army Corps of Engineers Wildlife Resources Management Manual.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s) : Mitchell, Wilma A. ; Hughes, H. G. ; Marcy, Larry E.

PDF Url : ADA299918

Report Date : JUL 1995

Pagination or Media Count : 58

Abstract : Prism sampling (also called variable radius plot, Bitterlich, or point sampling) is a method commonly used to inventory woody vegetation, particularly, trees. It is easily applied with an optical wedge prism and is appropriate for determining basal area and density, as well as for assessing volume and stand structure. This report provides biologists and natural resource managers with a description of the method for use on project lands. Topics include sampling concept, guidelines for technique selection and study design, preparations for sampling, procedure for data collection, sources of bias, and data analysis. Detailed instructions are given for recording and analyzing data; these are accompanied by numerical examples that illustrate each step of the calculations. Reproducible data forms are provided for project use.

Descriptors :   *NATURAL RESOURCES, *TREES, *SAMPLING, *RESOURCE MANAGEMENT, *PRISMS(OPTICS), DATA PROCESSING, OPTICAL PROPERTIES, COMPUTATIONS, DATA MANAGEMENT, VARIABLES, DATA ACQUISITION, SUPERVISORS, INVENTORY, ARMY, VEGETATION, WEDGES, BIAS, REPRODUCIBILITY, PLOTTING, RADIUS(MEASURE), WOOD, FORMS(PAPER), BIOLOGISTS.

Subject Categories : Optics
      Economics and Cost Analysis
      Biology

Distribution Statement : APPROVED FOR PUBLIC RELEASE