Mast (botany) some domestic animals consume. Mast is found in two forms. Mast is generated in large quantities during mast seeding events (or masting, mast events). Mast seeding is a population-level phenomenon that is hypothesized to be driven by economies of scale, weather, and resources. These pulses of resources drive ecosystem-level functions and dynamics. Tree species such as oak, hickory, and beech produce a hard mast—acorns, hickory nuts, and beechnuts. It has been traditional to turn pigs loose into forests to fatten on this form of mast. Other tree and shrub species produce a soft mast, such as raspberries, blueberries, and greenbriar.
Natural beech wood forest type is able to sustain and replace itself on its own - i.e. if the climatic and geological conditions for a given forest type are present or not. These conditions can be objectively determined, and does not depend on the "test of time" exclusively. The term "semi-natural" is sometimes used to describe any natural woodland, that is not strictly primeval in origin. Natural beech wood Natural beech wood is a beech wood, that is able to replenish and sustain itself on its own. Beech is a valued timber, but most beech woods requires human intervention to replace old trees,