Mast (botany) Mast seeding is defined as the highly variable production of fruit by a population. These intermittent pulses of food resources drive ecosystem-level functions and forest dynamics. The difference between a mast seeding year and a non-mast seeding year can be thousands of acorns, hickory nuts, beech nuts, etc. Mast seeding dominantly occurs in wind-pollinated tree species, but has also been observed in grasses and Dipterocarps. Masting, in the strict sense of the term, occurs only in monocarpic (or semelparous) species, whose members reproduce only once during their lifetime, then die. Hypothesis for the evolution of mast seeding can broadly be
Beech Creek (Pennsylvania) Beech Creek (Pennsylvania) Beech Creek is a tributary of Bald Eagle Creek in Centre and Clinton counties, in Pennsylvania in the United States. Via Bald Eagle Creek, its water flows to the West Branch Susquehanna River, then the Susquehanna River, and ultimately to Chesapeake Bay. Beech Creek is born at the confluence of the North and South Forks, upstream of Kato, and flows for to join Bald Eagle Creek, downstream of the borough of Beech Creek. The abandoned grade of the Beech Creek Railroad follows it along its length, running from its mouth up to the North Fork. At one