Monoterpenes of Lodgepole Pine Phloem as Related to Mountain Pine Beetles

摘要

Phloem samples taken from 86 healthy lodgepole pine trees were analyzed for content of dry matter, starch, various forms of sugar and nitrogen, and of selected monoterpenes. Beta-phellandrene was, by far, the most prevalent of the monoterpenes. An interactive hypothesis is developed for terpene content as a function of phloem thickness, radial growth, and tree diameter. Here, high concentrations of monoterpens coincide with upper tree diameters, the expected region of high mountain pine beetle survival success.