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Snag (ecology)
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In forest ecology, a snag is a standing dead or dying tree, often missing a top or most of the smaller branches. In freshwater ecology the term snag refers to trees, branches, and other pieces of natu
A fir tree snag among living fir trees
A fir tree snag among living fir trees
A coast Douglas-fir snag provides nest cavities for birds
A coast Douglas-fir snag provides nest cavities for birds
Successional stages of a snag from death of a tree to final decomposition.
Successional stages of a snag from death of a tree to final decomposition.
Stage 5 snags, Wallowa County, Oregon
Stage 5 snags, Wallowa County, Oregon
Tree hollow
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A tree hollow or tree hole is a semi-enclosed cavity which has naturally formed in the trunk or branch of a tree. They are found mainly in old trees, whether living or not. Hollows form in many specie
Snag (ecology)
…Stream restoration Tree hollow Media related to Snag at Wikimedia Commons…
A naturally formed tree hollow at the base of the tree.
A naturally formed tree hollow at the base of the tree.
Multiple tree hollows in a plane tree in Baden, Austria
Multiple tree hollows in a plane tree in Baden, Austria
Indian spotted owlet in tree hollow
Indian spotted owlet in tree hollow
Hollows excavated by the lesser spotted woodpecker (Picoides minor). Also fungus, which may also help in the formation of hollows through the decompos
Hollows excavated by the lesser spotted woodpecker (Picoides minor). Also fungus, which may also help in the formation of hollows through the decomposition of heartwood.