The genetic constitution of an organism or a species in contrast to its observable characteristics. Girdle - A method of killing unwanted trees, by cutting through the living tissues around the bole. Can be used instead of cutting to prevent felling damage to nearby trees.
Girdled trees can provide cavities and dead wood for wildlife and insects.
Grade -Established quality or use classification of timber. Gradient -Amount by which the grade increases or decreases in a unit of horizontal distance. Green -Wood of a live tree, or a tree that has recently been felled, or wood that has lost very little moisture since the time it was felled. Green strip -Uncut strip of timber left along streams and roads. Also known as buffer strip, leave strip, streamside management zone.