Cone Serotiny - Fire Relationships in Lodgepole Pine
Contribution to Book
Tall Timbers Fire Ecology Conference Proceedings
Throughout much of its range, lodgepole pine (Pinus contorta Dougl.) produces serotinous cones. Because of a resinous bond between the cone scales, serotinous cones do not open at maturity. When subjected to temperatures of 45 to 50 degrees C. (or even higher), the bond breaks, the cones are free to open, and stored seed is released. Wildfires cause cones to open and cones on or near the ground are opened by normal summer soil surface temperatures (Crossley, 1956; Lotan, 1964).
Lotan, J. (1976). Cone serotiny - fire relationships in lodgepole pine. In: Tall Timbers Fire Ecology Conference Proceedings 14, Tall Timbers Research Center, Tallahassee, FL. pp. 267-278