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Coarse woody debris in Białowieża Forest, Poland. Coarse woody debris (CWD) or coarse woody habitat (CWH) refers to fallen dead trees and the remains of large branches on the ground in forests [1] and in rivers or wetlands. [2] A dead standing tree – known as a snag – provides many of the same functions as coarse woody debris. The minimum ...
A fir tree snag among living fir trees. In forest ecology, a snag refers to a standing dead or dying tree, often missing a top or most of the smaller branches.In freshwater ecology it refers to trees, branches, and other pieces of naturally occurring wood found sunken in rivers and streams; it is also known as coarse woody debris.
Old-growth forests tend to have large trees and standing dead trees, multilayered canopies with gaps that result from the deaths of individual trees, and coarse woody debris on the forest floor. [8] The trees of old-growth forests develop distinctive attributes not seen in younger trees, such as more complex structures and deeply fissured bark ...
Forest dieback presents itself in many ways: falling off of leaves and needles, discolouration of leaves and needles, thinning of the crowns of trees, dead stands of trees of a certain age, and changes in the roots of the trees. It also has many dynamic forms. A stand of trees can exhibit mild symptoms, extreme symptoms, or even death.
Aokigahara (青木ヶ原, 'Blue Tree Meadow'), also known as the Sea of Trees (樹海, Jukai), is a forest on the northwestern flank of Mount Fuji on the island of Honshu in Japan, thriving on 30 square kilometres (12 sq mi) of hardened lava laid down by the last major eruption of Mount Fuji in 864 CE. [1]
The tree that killed Coltin, near mile marker 77, was dead for about two years, said John Wallace, the district ranger for the Emmett district of the Boise National Forest.
The forest composition of the region was typically interior spruce (Picea glauca x engelmanni) and spruce-balsam (Abies lasiocarpa). [4] In October 1975, strong winds damaged many spruce trees in the Bowron River valley and caused a buildup of debris.
The Red Forest (Ukrainian: Рудий ліс, romanized: Rudyi Lis, Russian: Рыжий лес, romanized: Ryzhiy Les, lit. ' ginger-colour forest ' ) is the ten-square-kilometre (4 sq mi) area surrounding the Chernobyl Nuclear Power Plant within the Exclusion Zone , located in Polesia .