Felsenthal National Wildlife Refuge green-tree reservoir 1990 forest plot measurements

A green-tree reservoir (GTR) is a stand of bottomland hardwoods that is intentionally flooded in the fall and winter to support migrating waterfowl. Bottomland hardwood forest plots in the GTR on Felsenthal National Wildlife Refuge (FNWR) are measured every 5-6 years to monitor tree survival, growth, and mortality. This dataset presents the measurements of all the trees in 54 plots during the year 1990. Parameters measured are species, diameter, vigor class, and canopy class. These parameters are defined in the Entity and Attributes section of this metadata file.