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
The Tree of Crows The Tree of Crows The Tree of Crows (also known as Raven Tree) is an oil painting of 1822 by the German Romantic artist Caspar David Friedrich. Acquired by the Musée du Louvre in 1975, it has been called one of Friedrich's "most compelling paintings." The painting depicts a twisted oak tree, bare but for a few dead leaves, seen against an evening sky. An inscription on the back of the canvas refers to the hill at the painting's center as a "Hünengrab", or dolmen, a prehistoric burial ground. In the distance can be seen the ocean, and Cape Arkona's