MOFEP plot change dynamics as view through stock diagrams

by

David R. Larsen, John Kabrick, Steve Shifley and Randy Jensen

Professor (DRL), Forestry, The School of Natural Resources, University of Missouri, Columbia, MO 65211; Research Forester (JMK), USDA Forest Service, Northern Research Station, 202 Natural Resources Building, Columbia, MO 65211; Research Forester (SRS), USDA Forest Service, Northern Research Station, 202 Natural Resources Building, Columbia, MO 65211; Forest Community Ecologist (RGJ), Missouri Department of Conservation, 2929 County Road 618, Ellington, MO 63638 (Deceased); DRL is corresponding author: to contact, call 573-882-4775 or email at larsendr@missouri.edu.

Abstract – Stocking diagrams come in two forms, the Gingrich Diagram and the Density Management Diagram. While they present the same information the each provide a different perspective on the trends being displayed. Density Management diagrams have been around since the 1930’s and Gingrich diagram have been around since the 1960’s, many managers have learned their use in School but the use of the diagrams to understand long-term dynamics has been rare in the literature. We will examine the plot level dynamics over the 20 years as display by the diagrams and evaluate the implication of the trends displayed by the graph. We will also look as plot dynamics over the 20 years as a consequence of treatments.