> Can anyone provide some information on "terpenes" or "terpenoids", a > resinous vapor emitted by conifers which is thought to contribute to haze > in the atmosphere? > Carolyn Argentati As the main chemical defence of conifers aganist bark beetles, terpenoids have lately been intensively studied by entomologists. You might want to ask for information from the leader of the plant/herbivore IUFRO group, Dr. William J. Mattson, Pesticide Research Center, Michigan State University, East Lansing, MI 48824, fax 517-353-5598. Regards Hannu Saarenmaa
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