Definitions for "Old-growth"
Ecologically mature forest that has been subject to negligible unnatural disturbance such as logging, roading and clearing.
Forests or trees which have originated naturally (not planted by humans) and have not experienced any human impact.
Referring to an ecosystem or community, particularly a forest, which has not experienced intense or widespread disturbance for a long time relative to the lifespans of the dominant species and which has entered a late successional stage; usually associated with high diversity of species, specialization, and structural complexity. [Go to source
Keywords:  declining, growing, trees, net, growth
Trees that have been growing for such a long time that net growth or value is often declining.