Download or read book Distribution of the cone insect Dioryctria disculsa in red pine trees written by William J. Mattson and published by . This book was released on 1976 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S D A Forest Service Research Paper NC written by and published by . This book was released on 1968 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impact of Cone and Seed Insects in Red Pine Seed Orchard written by Steven A. Katovich and published by . This book was released on 1988 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Note RM written by and published by . This book was released on 1983 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamics of Forest Insect Populations written by Alan A. Berryman and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insects multiply. Destruction reigns. There is dismay, followed by outcry, and demands to Authority. Authority remembers its experts or appoints some: they ought to know. The experts advise a Cure. The Cure can be almost anything: holy water from Mecca, a Government Commis sion, a culture of bacteria, poison, prayers denunciatory or tactful, a new god, a trap, a Pied Piper. The Cures have only one thing in common: with a little patience they always work. They have never been known entirely to fail. Likewise they have never been known to prevent the next outbreak. For the cycle of abundance and scarcity has a rhythm of its own, and the Cures are applied just when the plague of insects is going to abate through its own loss of momentum. -Abridged, with insects in place of voles, from C. Elton, 1924, Voles, Mice and Lemmings, with permission of Oxford University Press This book is an enquiry into the "natural rhythms" of insect abundance in forested ecosystems and into the forces that give rise to these rhythms. Forests form unique environ ments for such studies because one can find them growing under relatively natural (pri meval) conditions as well as under the domination of human actions. Also, the slow growth and turnover rates of forested ecosystems enable us to investigate insect popula tion dynamics in a plant environment that remains relatively constant or changes only slowly, this in contrast to agricultural systems, where change is often drastic and frequent.

Download or read book Acephate Residues in Second Year Cones of Pinus Sylvestris L Sprayed to Prevent Damage by Dioryctria Disclusa Heinrich written by M. E. Dix and published by . This book was released on 1981 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Cone and Seed Insects Working Party Conference written by International Union of Forestry Research Organizations. Working Party S2.07-01. Conference and published by . This book was released on 1984 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seed and Cone Insects of Southern Pines written by and published by . This book was released on 1980 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Publications Annotated written by North Central Forest Experiment Station (Saint Paul, Minn.) and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Southern pine seed and cone insects written by and published by . This book was released on 1975 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Information Report written by and published by . This book was released on 1985 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book More from Our Forested Resources written by United States. Forest Service and published by . This book was released on 1978 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Accomplishments written by and published by . This book was released on 1978 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Service Research Accomplishments written by and published by . This book was released on 1977 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Forest Service Research Note written by United States. Rocky Mountain Forest and Range Experiment Stations, Fort Collins, Colo and published by . This book was released on 1981 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Impact of Insects on Seed Production in Jack Pine written by Aunu Rauf and published by . This book was released on 1983 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study on Cone Insects with Particular Reference to the Bionomics Ecology of the White Pine Cone Beetle Conophthorus Coniperda Schwarz written by Andrew M. Mailu and published by . This book was released on 1975 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: