Predators and competitors of the mountain pine beetle Dendroctonus ponderosae (Coleoptera: Curculionidae) in stands of changing forest composition associated with elevation
1. Department of Entomology, University of Wisconsin, 345 Russell Laboratories, Madison, WI, U.S.A.;2. Department of Forest and Wildlife Ecology, University of Wisconsin, Russell Laboratories, Madison, WI, U.S.A.