Looking at life from a human perspective. The variety of life across all levels of organization from genetic diversity within populations, to species, which have to be regarded as the pivotal unit of classification, to ecosystems. For example, in the U.S., areas now defined by state boundaries would be reorganized to follow similar landscape features. Out of the mountainous regions of Tennessee, North Carolina, Virginia, Georgia, Kentucky, and West Virginia would come the Southern Appalachian Bioregion. Buffer zones are primarily drawn from private land.
Core areas are large, allow little or no human use, and are taken mostly from public lands.
An area of land that connects core areas to other core areas. Corridors generally follow rivers and streams, and wildlife migration routes. They are taken from both public and private lands. This measurement, correlated to the height of the tree, gives an indication of the board foot volume of lumber in a tree. Deep ecologist believe that humans should use natural resources to satisfy only vital needs.