2 edition of Spruce beetle and the forests of the Southwest Yukon found in the catalog.
Spruce beetle and the forests of the Southwest Yukon
Beginning in about 1990, populations of spruce beetle, Dendroctonus rufipennis Kirby (Coleoptera: Scolytidae), reached epidemic levels and began killing drought-stressed white spruce, Picea glauca within Kluane National Park and Reserve in the southwest Yukon. By 1994, when the infestation was first discovered, the beetle had already killed spruce over an area of 32 000 ha and had moved from the Alsek River drainage within the park into public forest lands and First Nations settlement lands within the Shakwak Trench north of Haines Junction. In 2000, while the infestation continued to expand, a decision was made to establish a network of plots within infested stands to assess and document the changes that were occurring to the treed overstory and understory, as well as to the associated flora. Also, in response to the greatly increased fire hazard posed by the beetle-killed trees, tree crown and surface fuels were analyzed and a relative fire hazard rating system was developed. From 2000 to 2003, 27 plots were established in the Alsek River drainage within Kluane National Park, the Shakwak Trench from Congdon Creek in the north to Klukshu Village in the south and east within the Dezadeash River Valley as far as Canyon. A supplementary root disease assessment was completed within selected plots in 2003. As of the date of this report, spruce beetles are still killing trees over large areas, with an accumulated area of infestation in excess of 350 000 ha, and trees are still dying within some of the plots. This establishment report summarizes the findings from the first round of assessments and will serve as a baseline against which later assessments will be compared. To realize the full intent of the project, the second round will be completed some years after the collapse of the beetle infestation when the trees have begun shedding their fine fuels. This will allow the stands to begin adjusting to the loss or partial loss of the white spruce overstory, and increased light penetration to the forest floor will have begun to stimulate a response in the treed understory and the surface vegetation.
|Statement||Rod Garbutt, Brad Hawkes and Eric Allen.|
|Series||Information report -- BC-X-406., Information report (Pacific Forestry Centre) -- BC-X-406.|
|Contributions||Allen, Eric Andrew, 1955-, Hawkes, B. C., Pacific Forestry Centre.|
|LC Classifications||SB945.S69 G37 2006|
|The Physical Object|
|Pagination||v, 68 p. :|
|Number of Pages||68|
|LC Control Number||2007408360|
Boonstra R, Boutin S, Jung TS, Krebs CJ, Taylor S (). Impact of rewilding, species introductions and climate change on the structure and function of the Yukon boreal forest ecosystem. Integrative Zool –Cited by: 4. back of the book. A description for each insect and disease includes hosts, damage, symptoms, biology, and effects or impacts. A list of references is also provided. Please refer to your local Forest Service, Forest Health zone office, State Forest Health Specialist, Cooperative Extension. White spruce is a part of which community? Wiki User Its part of the pum pum community that lives thrugh the spruce. system that carrys the guldom. Related Questions. The south-western part of the Yukon Territory of Canada has experienced an unprecedented spruce bark beetle outbreak and frequent forest fires beyond the historical trends. Accumulating evidence also suggests that the southwest Yukon has experienced the impacts of recent climate change: warmer winters and warmer and drier summers over the past 15 years have contributed to the severe spruce.
Toward a strategy for agricultural development.
U.S. sheep industry
Greensboro & High Point Guilford County, North Carolina Street Map Book
Arts in exile in Britain 1933-1945
Harris ORACLE utilities manual.
book of the red deer and empire big game
Report by H.M. Inspectors
The not-so-empty nest
college professor in America
A new school management
Californias new Department of Alcoholic Beverage Control
Get this from a library. Spruce beetle and the forests of the southwest Yukon. [Rod Garbutt; Eric Andrew Allen; B C Hawkes; Pacific Forestry Centre,] -- Beginning in aboutpopulations of spruce beetle, Dendroctonus rufipennis Kirby (Coleoptera: Scolytidae), reached epidemic levels and began killing drought-stressed white spruce, Picea glauca.
Beginning in aboutpopulations of spruce beetle, Dendroctonus rufipennis Kirby (Coleoptera: Scolytidae), reached epidemic levels and began killing drought-stressed white spruce, Picea glauca within Kluane National Park and Reserve in the southwest Yukon.
Bywhen the infestation was first discovered, the beetle had already killed spruce over an area of 32 ha and Spruce beetle and the forests of the southwest Yukon | FRAMES Skip to main content. in Yukon forests beforebut recently, high populations and visible damage have become widespread.
By the late s, D. confusus had caused extensive mortality of sub alpine fir, Abies lasiocarpa, to the limit of the host’s northern range.
The spruce bark beetle infestation in the southwest Yukon is an example of the second effect. Not only are spruce beetles killing the forest, the hard-shelled critters are also increasing carbon dioxide output, adding to wildfire risk and compromising the territory’s natural resources, say Yukon Party politicians.
“In the Southwest Yukon we have the largest spruce bark beetle infestation on, I believe, the North American continent,” Premier Dennis Fentie said during the spring sitting of the Author: Genesee Keevil. Our findings indicate high response diversity to disturbance and suggest that forests of southwestern Yukon have high resilience to the recent spruce beetle outbreak because of the large number of surviving canopy trees, the abundant advance regeneration of spruce that can replace beetle-killed trees, and the increased growth of surviving by: 1.
SPRUCE BARK BEETLE DISTURBANCE IN THE FOREST-TUNDRA ECOTONES OF SOUTHWEST YUKON: IMPACTS AND PREDISPOSING FACTORS by Michelle Leigh Mazzocato A thesis submitted to the School of Environmental Studies In conformity with the requirements for the degree of Master of Environmental Studies Queen’s University Kingston, Ontario, Canada (May, ).
'Spruce bark beetle is the most destructive pest to Yukon's spruce stands,' says forest health specialist. Spruce bark beetles devastated a massive area around Haines Junction, Yukon through the s and early s. In this archival picture, dead spruce are seen throughout the forest.
Dendroctonus rufipennis, the spruce beetle, is a species of bark beetle native to British Columbia, Newfoundland and Labrador, Nova Scotia, Ontario, Quebec, Northern Manitoba, the Yukon, Colorado, Wyoming, Montana, and are known to destroy forests of spruce trees including Engelmann, White, Sitka, and Colorado blue spruce.
Adults average 4 to 7 mm in : Curculionidae. Forest pests which remained at levels similar to those in included spruce beetle, which infested mature spruce over approximately ha. Infestations of spruce beetle mapped for the second consecutive year in southwest Yukon expanded by 45% to cover 47 ha with another ha mapped in the adjacent Tatshenshini Provincial Park.
Mature. In this Aug. 6, photo, the spruce bark beetle's infestation, which has devastated the forests of southwest Yukon, could be petering out.
The spruce beetle infestation in the region of Haines Junction, Yukon is petering out. Rob Legare, from the Department of Energy, Mines and Resources, looks after the territory's forest health program.
In and27 Forest Assessment plots were established within the area infested by spruce bark beetle, Dendroctonus rufipennis Kirby (Coleoptera: Scolytidae) in southwest Yukon. The study objective was to document long-term changes in white spruce (Picea glauca. Spruce beetle For the (estimated) 14th consecutive year spruce beetles killed large numbers of mature and near-mature white spruce in the southwest Yukon, throughout the Shakwak Trench, the Dezadeash River Valley and southern forested areas within Kluane National Park.
Find many great new & used options and get the best deals for Spruce Beetle Forests Southwest Yukon Canadian Pacific Service Garbutt Hawkes BC at the best online prices at. Response of southwest Yukon forests to spruce beetle: plot re-assessment Brad Hawkes, René Alfaro, Vince Waring, and Jenny Berg Natural Resources Canada.
The spruce bark beetle, 6 millimeters inch) long, has devastated the forests of southwest Yukon, aided by warmer summers that speed up its reproductive process and warmer winters that don’t.
Spruce beetle infestation slowed by cold winter. the spread of spruce bark beetles in southwest Yukon is declining sharply. of beetle-infested forest in the southwest Author: CHUCK TOBIN.
We used measurements of tree rings to detect such growth releases and reconstruct the history of spruce beetle outbreaks at 23 mature spruce (Picea spp.) forests on and near the Kenai Peninsula, Alaska and four mature white spruce (Picea glauca) forests in Kluane National Park and Reserve, Yukon by: Spruce engraver beetle infestation was mapped in southwest Yukon at over 3, ha (Garbutt, ).
2a Single tree attack 2b Young adults and larva Zone 1 Carcross. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The annual survey of forest pests in the Yukon was conducted in July Attacks from the spruce bark beetle, Dendroctonus rufipennis, in southwest Yukon resulted in white spruce mortality on 41 ha, down from last year’s 69 ha.
The most intensive activity is south of Mush Lake in Kluane National Park. Kent Grant, a district forester with the Colorado State Forest Service, said southwest Colorado has seen periodic outbreaks of pine beetle, but current conditions in the forests here have spelled out a sort of perfect storm.
Most of the ponderosa trees at risk are more than a. In a community-directed forest management context, research is needed that will help both the managers of forest resources and the community residents who set forest management directions to consider climate change in their decision making.
Specific research needed in light of climate change to support implementation of the forest management plan for the Champagne and Aishihik Traditional. Forest pests and diseases are a normal part of the natural cycle of forests. If you have a specific concern about a tree, you can contact the Forest Management Branch to get more information.
Phone or email [email protected] The southwestern region of the Yukon Territory of Canada has experienced an unprecedented spruce bark beetle outbreak (Dendroctonus rufipennis) and an increase in the frequency of forest fires that extend beyond historical trends and that have caused significant impacts on.
Forest Health Program Forest Management Branch Energy, Mines and Resources Government of Yukon P.O. Box (K) Whitehorse, YT Y1A 2C6 Toll free in Yukon:ext.
Lett. 6 Beck P S A, Juday G P, Alix C, Barber V A, Winslow S E, Sousa E E, Heiser P, Herriges J D and Goetz S J Changes in forest productivity across Alaska consistent with biome shift Ecol.
Lett. 14 Berg E E, Henry J D, Fastie C L, De Volder A D and Matsuoka S M Spruce beetle outbreaks on the Kenai Peninsula, Alaska, and Cited by: The spruce bark beetle has been the most damaging forest pest in Yukon in recent decades, responsible for killing about 4, square kilometres of predominantly mature white spruce.
Historically, spruce-beetle infestations last four years. But the southwest Yukon’s forest’s blight is rolling into its 14th. It is by far the largest and most intensive spruce beetle outbreak ever recorded in Canada.
The total infected area is now more thanhectares of white spruce, and each year the footprint increases. File-- In this Aug. 6, file photo, spruce bark beetles are shown by forester Rob Legare, near Haines Junction, Yukon Territory. The spruce bark beetle, 6 millimeters inch) long, has devastated the forests of southwest Yukon, aided by warmer summers that speed up its reproductive process and warmer winters that don't kill off beetle larvae as in the : Matt Ferner.
Mountain pine beetle (Dendroctonus ponderosae) and spruce beetle (Dendroctonus rufipennis) are two primary bark beetles found in Western North America. Extraordinary outbreaks have occurred in both species populations which have resulted in significant forest mortality over the last two decades.
Compared with historical eruptions, the recent outbreaks are considered to be a consequence of. It's been a few years since Yukon's last devastating spruce bark beetle infestation petered out, but government forest officials are trying to determine the risk of a resurgence.
According to the territorial government, Yukon experienced the most severe and long-lasting spruce beetle infestation in Canada, beginning in the early s. The spruce bark beetle began attacking the forests of the southwest Yukon with a vengeance in the s, explains Susan Skaalid, manager, forest operations for the Yukon government.
The beetles radiated out in concentric circles before moving back to hit some stands multiple times.
Farther north, in the Yukon, the pine beetle isn't endemic — yet. Here it's the spruce bark beetle that has eaten its way through a million acres of woodland, and even more in neighboring Alaska, in a year-old epidemic unmatched in its longevity and extent.
"It's. The pine beetle, on the other hand, is another destructive force all its own. From tothe pine beetle ripped through more than million acres of Colorado’s forests – about The pine beetle, on the other hand, is another destructive force all its own.
From tothe pine beetle ripped through more than million acres of Colorado’s forests — about The spruce beetle is an aggressive bark beetle that feeds and reproduces in the inner bark of various species of spruce trees.
Currently, spruce beetles are affecting overacres in the Matanuska-Susitna Valley, resulting in widespread mortality of spruce trees. Spruce Bark Beetle The spruce bark beetle (Dendroctonus rufipennis Kirby) is the most significant insect agent of mortality of spruce forests in both the northern latitudes of North America and the high altitudes of the Rocky Mountains (Ford ).
In the Kluane area the only host tree supporting the spruce bark beetle is the white spruce. Blue spruce is an infrequent host of mountain pine beetle (Dendroctonus ponderosae) and spruce beetle (D.
rufipennis), which kill other conifers [5,62]. Trees surviving infestation are more susceptible to other pathogens, insects, and windthrow [ 45, 57 ]. John Formby, head of the state’s forest health program, cuts into the bark of an Engelmann spruce in search of bark beetles.
Tree death from the beetle was mapped across more t acres. Spruce beetles moving into more Colorado forests, survey shows By David Migoya PUBLISHED: Janu at a.m.
| UPDATED: Febru at p.m. For the most part, this massive die-off is being caused by outbreaks of tree-killing insects, from the ips beetle in the Southwest that has killed pinyon pine, to the spruce beetle, fir beetle, and the major pest — the mountain pine beetle — that has hammered forests in the north.
These large-scale forest deaths from beetle infestations are. Our comparison of aerial photographs of southwest Yukon from and with those taken in indicates significant changes in the spruce forest-shrub tundra transition.
In decreasing order of occurrence, these include (1) increased growth of individual spruce, (2) increased population density of spruce at the treeline, and (3) an upward.Berg was the lead author on articles entitled, "Spruce beetle outbreaks on the Kenai Peninsula, Alaska, and Kluane National Park and Reserve, Yukon Territory: Relationship to summer temperatures and regional difference in distrubance regimes" and "Fire history of white and Lutz spruce forests on the Kenai Peninsula, Alaska, over the last two.