clearcut - the forestry practice of removing all the trees for timber

ecotone - that borderland between two distinct vegetational areas

fire break - an artificial or natural area devoid of tall trees

old growth - a diverse stand of trees 500 years old or more

Park Service - a division of the Department of Interior

Western forest lands are part of the public domain

riparian - vegetation that borders along stream or river.

selective cutting - a recent practice of leaving certain tall trees for propagation.

tributary - a river's contributing streams adding runoff and siltation to the mainstream.