Acorn mast data (1995-2025), Black Rock Forest, Cornwall, NY

Acorn abundance has been tracked annually since 1995 at Black Rock Forest (BRF), Cornwall, NY between September and October to coincide with peak acorn drop. From 1995 to 2010 all acorns were counted within a circular plot thrown 10 times at 15 to 20 locations throughout BRF. Beginning in 2004 individual oak trees were visited and DBH and number of acorns under the drip line of the tree were counted at the same 15 to 20 locations within BRF. Beginning in 2024 four 1-meter square quadrats were used to count acorns under 10 trees at each location.