Plants capable of invading bare sites (e.g. newly exposed soil) and persisting there or colonizing them until supplanted by successional species.
A term applied to the resins occurring in the wood of certain conifers.
A panel consisting of an assembly of veneer sheets bonded together with the direction of the grain in alternate plies generally at right angles.
A round timber often to support power or telephone lines.
Cross-section of vessel elements.
A group of trees species utilized for special purposes that demand either high quality, durability, beauty or strength.
Any land belonging to any private person or group of person or juridical entity by virtue of statutory or customary laws.
A living organism that is capable of manufacturing its own food by the process of photosynthesis.