laeta) that collectively dominated the five stands. leiophylla) and oaks (Quercus sideroxylla, Q. Interspecific and intraspecific patterns were compared in small (< 15 cm dbh) and large (< 15 cm dbh) diameter classes of the pines (Pinus durangensis, P.
Spatial pattern analyses were used to compare pattern development and interspecific spatial interactions in trees and seedlings in five Madrean pine-oak stands with different recent fire histories. Surface fire can modify spatial patterns and self-thinning in pine-oak ecosystems.