" Whatever the particularities of their history, these fallen trees have now started the next part of their journey through the ecology of this old-growth forest. Fungi, salamanders, and thousands of species of invertebrates will thrive in and under the rotting trunks. At least half a tree's contribution to the fabric of life comes after its death, so one measure of a vitality of a forest ecosystem is the density of tree carcasses. You're in a great forest if you cannot pick out a straight-line path through fallen limbs and trunks. A bare forest floor is a sign of ill health. "

― , The Forest Unseen: A Year’s Watch in Nature