Birds that are grouped together because they are about the same age. For example, most gulls are brown or brownish gray in the year that they hatch. For Urban Bird Studies, these brownish gulls are grouped into an age class called Juveniles.
One of the intervals into which the range of age of trees growing in a forest is divided for classification or use; also the trees falling into such an interval. Cf. Age gradation ( BCFT ).
An interval into which the age range of trees or forest stands is divided for classification or use (e.g., 0-10 years, 10-20 years, etc.).
An interval, commonly 10years, into which the age range of trees is divided for classification purposes; for example, trees ranging in age from 20-29 years fall into a 20-year age class.
A distinct aggregation of trees originating from a single natural event or management activity.
people in the same age range
A group of trees about the same age, such as 20-year or 7-year age class.
An age range in which forested stands are often classified for management purposes, since age can be a good indicator of size and merchantability.
Any interval into which the age range of trees, forests, stands or forest types is divided for classification and use. Forest inventories commonly group trees into 20-year age class groups.
A distinct group of trees or portion of growing stock recognized on the basis of age. Classe d'âge
A distinct aggregation of trees originating from a single environmental disturbance.
a) A management classification using the age of a stand of trees. ( FEMAT, IX-1) b) An are grouping of trees according to an interval of years, usually 20 years. A single age class would have trees that are within 20 years of the same are such as 1-20 years or 21-40 years. ( FS People's Glossary of Eco Mgmt Terms)