TIGER for Woodlands and Compartments has been developed for use in 20 states -- Connecticut, Delaware, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Illinois, and Wisconsin. Although each state has some unique forest inventory characteristics that are reflected in the version developed for the state, the program looks and feels the same for each state. As Iowa TIGER was the first one developed, it will be presented on the following pages to show what the program looks like and how it is organized.
To help understand what you will see, you need to know that TIGER for Woodlands and Compartments handles two types of inventory data: traditional and 100%. In the traditional a series of plots (or points) are established across a woodlot, and the trees on each plot are measured. A 100% inventory is one in which all trees meeting some user-defined criteria, such as a tree to be removed in a thinning, are measured. As a result, there are differences in how TIGER handles both types of inventory.