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Author : Edward H. Holsten,Richard Allen Werner,Thomas H. Laurent
Publisher : Unknown
Page : 208 pages
File Size : 53,9 Mb
Release : 1981
Category : Forest insects
ISBN : MINN:31951002876575Q
Author : United States. Congress. Senate. Committee on Energy and Natural Resources
Publisher : Unknown
Page : 88 pages
File Size : 46,5 Mb
Release : 1998
Category : Business & Economics
ISBN : PSU:000033132525
Author : J. M. Schmid
Publisher : Unknown
Page : 8 pages
File Size : 46,6 Mb
Release : 1972
Category : Spruce beetle
ISBN : IND:30000091992267
Author : United States. Congress. Senate. Committee on Energy and Natural Resources
Publisher : Unknown
Page : 88 pages
File Size : 51,5 Mb
Release : 1998
Category : Business & Economics
ISBN : UCAL:B5125955
Author : Anonim
Publisher : Unknown
Page : 248 pages
File Size : 40,7 Mb
Release : 2001
Category : Forest insects
ISBN : UVA:X005081063
Author : Richard Allen Werner,Bruce H. Baker,Peter A. Rush
Publisher : Unknown
Page : 20 pages
File Size : 53,7 Mb
Release : 1977
Category : Spruce
ISBN : UIUC:30112104081143
Author : Edward H. Holsten
Publisher : Unknown
Page : 12 pages
File Size : 55,5 Mb
Release : 1999
Category : Spruce bark beetles
ISBN : MINN:31951D024690595
Author : Bethany Schulz
Publisher : Unknown
Page : 16 pages
File Size : 48,5 Mb
Release : 2003
Category : Coarse woody debris
ISBN : MINN:31951D02977796C
The forests of the Kenai Peninsula, Alaska, underwent a major spruce beetle(Dendroctonus rufipennis (Kirby)) outbreak in the 1990s. A repeated inventory of forest resources was designed to assess the effects of the resulting widespread mortality of spruce trees, the dominant component of the Kenai forests. Downed woody materials, fuel heights, and moss depths were recorded during each inventory. Changes in downed and dead woody materials are summarized by forest type and harvest activity, compiled by fuel timelag classes. Fuel heights, fine fuels, and sound large fuels increased between 1987 and 2000. Moss depths and rotten large fuels decreased. Harvested white spruce (Picea glauca (Moench) Voss) showed the greatest increase of fine fuel classes.
Author : Andrew Nikiforuk
Publisher : Greystone Books Ltd
Page : 240 pages
File Size : 51,7 Mb
Release : 2011-07-22
Category : Nature
ISBN : 9781553658948
Beginning in the late 1980s, a series of improbable bark beetle outbreaks unsettled iconic forests and communities across western North America. An insect the size of a rice kernel eventually killed more than 30 billion pine and spruce trees from Alaska to New Mexico. Often appearing in masses larger than schools of killer whales, the beetles engineered one of the world's greatest forest die-offs since the deforestation of Europe by peasants between the eleventh and thirteenth centuries. The beetle didn't act alone. Misguided science, out-of-control logging, bad public policy, and a hundred years of fire suppression created a volatile geography that released the world's oldest forest manager from all natural constraints. Like most human empires, the beetles exploded wildly and then crashed, leaving in their wake grieving landowners, humbled scientists, hungry animals, and altered watersheds. Although climate change triggered this complex event, human arrogance assuredly set the table. With little warning, an ancient insect pointedly exposed the frailty of seemingly stable manmade landscapes. Drawing on first-hand accounts from entomologists, botanists, foresters, and rural residents, award-winning journalist Andrew Nikiforuk, investigates this unprecedented beetle plague, its startling implications, and the lessons it holds.
Author : Richard Allen Werner
Publisher : Unknown
Page : 80 pages
File Size : 51,8 Mb
Release : 1997
Category : Bark beetles
ISBN : MINN:31951D029773807
Author : Anonim
Publisher : Unknown
Page : 48 pages
File Size : 50,7 Mb
Release : 2001
Category : Forest health
ISBN : MINN:31951D029601202
Author : Edward Holsten
Publisher : Diane Publishing Company
Page : 242 pages
File Size : 55,8 Mb
Release : 2001
Category : Medical
ISBN : 0756725046
This handbook is divided into insect & disease sections, each with its own color photograph, & host index. Chapters: the role of disturbance in ecosystem management; invasive pests; guide to the forest pests; forest defoliators; sap-sucking insects & mites; bark beetles; wood borers; cone & seed insects; insect pests of wood products; bud & shoot insects; parts of an insect; index to insects by host plants; diseases; foliar diseases; shoot diseases; stem & branch diseases; root diseases; wood decays & stains; non-infections disorders; index to diseases by host plants; glossary; literature cited; & submitting insects & diseases for identification. Comprehensive!
Author : Edward H. Holsten,Richard Allen Werner,Paul E. Hennon
Publisher : Unknown
Page : 217 pages
File Size : 46,9 Mb
Release : 1985
Category : Alaska
ISBN : OCLC:19524119
Author : Richard Allen Werner
Publisher : Unknown
Page : 8 pages
File Size : 54,6 Mb
Release : 1978
Category : Spruce bark beetles
ISBN : MINN:31951D01340812Z
Author : Anonim
Publisher : Unknown
Page : 90 pages
File Size : 50,5 Mb
Release : 2003
Category : Forest health
ISBN : CORNELL:31924097651719