Photos from the Field: Predicting the Terminal Velocity of Dipterocarp Fruit
James R. Smith, Robert Bagchi, Chris J. Kettle, Colin Maycock, Eyen Khoo and Jaboury Ghazoul, (2016). Predicting the terminal velocity of dipterocarp fruit. Biotropica, 48: 154–158. doi: 10.1111/btp.12316
We measured the terminal velocity of helicopter-like fruit from the Dipterocarpaceae family and present a model predicting the terminal velocities for all dipterocarp species in the Malesiana region. A ballistic model of seed dispersal using the observed terminal velocities predicted dispersal distances of 17–77 m under normal atmospheric conditions. These data are of applied use in parametizing models of species coexistence, forest regeneration and habitat connectivity in Southeast Asian tropical forests.