Download or read book Pine Butterfly Neophasia Menapia Outbreak in the Malheur National Forest Blue Mountains Oregon written by Ariadne T. DeMarco and published by . This book was released on 2014 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pine butterfly (Neophasia menapia C. Felder & R. Felder) (Lepidoptera: Pieridae) is a relatively host-specific defoliator of ponderosa pine (Pinus ponderosa Dougl. ex Laws). From 2008 to 2012, the Malheur National Forest was subject to an outbreak of pine butterfly in ponderosa pine, peaking at ~100,000 ha of forest visibly defoliated in 2011. Silvicultural-based management guidelines have been used to manage stand resilience to other insect defoliators, but guidelines specific to the pine butterfly are currently lacking. The goal of this study is to examine pine butterfly defoliation patterns to relate stand and tree structure characteristics to inform management guidelines. I randomly sampled 25 stands within ponderosa pine forests delineated as heavily defoliated in 2011 by annual forest health aerial surveys. Within each stand I randomly located three transect plots, 10 x 40m, and measured diameter at breast height (DBH), height, and estimated defoliation for the entirety of all trees> 5cm DBH. Data was analyzed using linear mixed effects models to account for all other determinants of defoliation before measuring variables under study. Defoliation averaged 67% for all trees. Stand density index, stand structure, tree crown class, and level within a tree canopy demonstrated no meaningful effects on mean defoliation. I infer from these results that defoliation levels during pine butterfly outbreaks are not influenced by structural or crown characteristics; virtually all available foliage is consumed in these single host-species stands (though note that ~10% of trees studied showed
Download or read book Pine Butterfly Neophasia Menapia written by and published by . This book was released on 2010 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mexacarbate and Bacillus Thuringiensis for Control of Pine Butterfly Infestations written by Jerald E. Dewey and published by . This book was released on 1974 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerial application of mexacarbate and Bacillus thuringiensis Berliner was tested against pine butterfly, Neophasia menapia (F. and F.). These were applied to 40-acre plots on the Bitterroot National Forest and adjacent State and private lands during June 1973. Two concentrations of each material were tested; these were 0.15 and 0.30 pound per acre of mexacarbate, and 0.5 and 1.0 pound of B. thuringiensis per acre. Both concentrations of mexacarbate caused pine butterfly population reductions of near 97 percent and B. thuringiensis provided 73 percent reduction at the • 0.5 pound rate and 92 percent at the 1.0 pound rate. Natural decline of late instar larval population precluded an evaluation of differences in degree of defoliation between treated and untreated areas.
Download or read book Forest Insect and Disease Conditions in the United States written by United States. Forest Service and published by . This book was released on 1982 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Insect and Disease Conditions in the United States written by and published by . This book was released on with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cooperative Economic Insect Report written by and published by . This book was released on 1958 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pine Butterfly Neophasia Menapia F F written by United States. Forest Service and published by . This book was released on with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Defoliation by the Pine Butterfly Neophasia Menapia Felder Upon Ponderosa Pine written by James Cawston Evenden and published by . This book was released on 1936 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cooperative Economic Insect Report written by United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs and published by . This book was released on 1958 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agriculture Bulletin written by and published by . This book was released on 1956 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oregon Agri record written by and published by . This book was released on 1954 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Search for a Solution written by and published by . This book was released on 1996 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Black Tailed Prairie Dog written by John L. Hoogland and published by University of Chicago Press. This book was released on 1995-04 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: In The Black-Tailed Prairie Dog, John L. Hoogland draws on sixteen years of research at Wind Cave National Park, South Dakota, in the United States to provide this account of prairie dog social behavior. Through comparisons with more than 300 other animal species, he offers new insights into basic theory in behavioral ecology and sociobiology. Hoogland documents interactions within and among families of prairie dogs to examine the advantages and disadvantages of coloniality. By addressing such topics as male and female reproductive success, inbreeding, kin recognition, and infanticide, Hoogland offers a broad view of conflict and cooperation. Among his surprising findings is that prairie dog females sometimes suckle, and at other times kill, the offspring of close kin. Enhanced by more than 100 photographs, this book illuminates the social organization of a burrowing mammal and raises fundamental questions about current theory. As the most detailed long-term study of any social rodent, The Black-Tailed Prairie Dog will interest not only mammalogists and other vertebrate biologists, but also students of behavioral and evolutionary ecology.
Download or read book Brown Trunk Rot written by and published by . This book was released on 1983 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Butterflies of British Columbia written by Jon Shepard and published by UBC Press. This book was released on 2011-11-01 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Butterflies are found everywhere in British Columbia. Written for butterfly watchers, butterfly gardeners, naturalists, and biologists, Butterflies of British Columbia will provide years of enjoyment for the butterfly enthusiast. The Butterflies of British Columbia � provides the most complete coverage of species and subspecies of any North American regional or continental butterfly book � covers 187 species and 264 subspecies of butterflies, as well as 9 additional hypothetical species � provides descriptions of identifying features, immature stages, larval foodplants, biology and life history, range and habitat, and conservation status for each species � describes 11 new subspecies � includes introductory chapters covering the history, zoogeography, conservation, morphology, ecology, and biology of butterflies in BC and adjacent areas � is lavishly illustrated with over 1,200 colour photographs and over 200 distribution maps � includes a glossary of butterfly terms and a bibliography of over 750 citations.
Download or read book Diseases of Pacific Coast Conifers written by Robert F. Scharpf and published by . This book was released on 1993 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Management of Timber and Deer written by and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
