Estimating Engelmann spruce beetle infestations in the central Rocky Mountains by Fred Barrows Knight

Cover of: Estimating Engelmann spruce beetle infestations in the central Rocky Mountains | Fred Barrows Knight

Published by Rocky Mountain Forest and Range Experiment Station in Fort Collins, Colo .

Written in English

Read online

Subjects:

  • Engelmann spruce,
  • Diseases and pests,
  • Engelmann spruce beetle

Edition Notes

Book details

Statementby F.B. Knight, W.F. McCambridge, and B.H. Wilford
SeriesStation paper / Rocky Mountain Forest and Range Experiment Station -- no. 25, Station paper (Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)) -- no. 25.
ContributionsMcCambridge, William F., 1923-, Wilford, B. H. (Bill Howard), 1907-, Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.), United States. Forest Service
The Physical Object
Pagination12 p. :
Number of Pages12
ID Numbers
Open LibraryOL25588606M
OCLC/WorldCa38266908

Download Estimating Engelmann spruce beetle infestations in the central Rocky Mountains

Dendroctonus, such as the spruce beetle, could attack atypical hosts like lodgepole pine when they are mixed with Engelmann spruce. Engelmann spruce is widely distributed throughout western North America and is usually found between 9, feet (2,; m)elevationinthecentral Rocky Mountains (U.

Department of Agriculture ).Cited by: elevation. Engelmann spruce and subalpine firs form one of the most common forest associations in the Rocky Mountains. Planting: Open-grown trees of Engelmann spruce begin cone production at years of age but the best seed production is between and years.

Good seed crops are generally borne every years. Throughout the Rocky Mountains, Engelmann spruce occurs in widespread forests within the subalpine fir or white fir (Abies concolor) habitat-type series either as a climax codominant or long-lived seral species [4,98].

In the northern Rocky Mountains, Engelmann spruce. Spruce beetle populations continued to cause widespread tree mortality, impactingacres of higher-elevation stands of Engelmann spruce statewide.

The largest infestations were detected primarily in southern and central Colorado, with more than one. Spruce beetles (Dendroctonus rufipennis) are native bark beetles that infest Engelmann spruce (Picea engelmannii) and occasionally Colorado blue spruce (P.

pungens) in high elevation forests in spruce beetle typically completes a generation in one to three years, with a two-year life cycle being the most common in spruce trees growing above 9, feet. Engelmann spruce is a medium- to large-sized evergreen conifer indigenous to the western parts of North America, typically growing at high altitudes between 3, ft ft ( m and 3, m).

These spruce trees have a pyramidal crown with a slightly rounded top and their branches extend to the ground, giving the whole [ ]. Engelmann spruce grows in the Rocky Mountains from central British Columbia south to Mexico and in the Cascade Mountains of Washington and Oregon, with a few scattered populations in northern California, the Siskiyou Mountains, northeastern Oregon, and the Olympic Mountains of Washington State.

Spruce beetle outbreaks have been reported in the Rocky Mountains of western North America since the late s. In their classic paper, Spruce Beetle in the Rockies, Schmid and Frye reviewed the literature that emerged from the extensive outbreaks in Colorado in the s.

A new wave of outbreaks has affected Rocky Mountain subalpine spruce-fir forests beginning in the mids and Cited by: Biology and Control of the. ENGELMANN SPRUCE BEETLE. in Colorado. By C. MASSEY. and N.

\VYGANT, entomologists, Rocky Mountain Forest (mil Range Experiment Station, Forest Service. INTRODUCTION. HE SPRUCE BEETLE' (l)end1'octoml8 enge7-?n(J;nni.

Hopk.) is the most serious pest of E:ngellllann spruce. Alexander, R. Ecology, silviculture, and management of the Engelmann spruce - subalpine fir type in the central and southern Rocky Mountains. USDA Forest Service, Agriculture Handbook No.pp.

This Full Issue is brought to you for free and open access by the Quinney Natural Resources Research Library, S.J. Infrequent large-scale natural disturbance regimes are an integral component of Engelmann spruce (Picea engelmannii) forests of the central Rocky Mountains. Wildfires, bark beetle outbreaks, winds.

Decays of Engelmann Spruce and Subalpine Fir in the Rocky Mountains. Forest Insect & Disease LeafletFS-R6-RO-FIDL#/ Book April with 76 Reads. ENVIRONMENTAL FACTORS AFFECTING NATURAL REGENERATION OF ENGELMANN SPRUCE IN THE CENTRAL ROCKY MOUNTAINS [Daniel L & Alexander, Robert R Noble] on *FREE* shipping on qualifying : Noble, Daniel L & Alexander, Robert R.

Appropriate response to recent, widespread bark beetle (Dendroctonus spp.) outbreaks in the western United States has been the subject of much debate in scientific and policy circles.

Among the proposed responses have been landscape-level mechanical treatments to prevent the further spread of outbreaks and to reduce the fire risk that is believed to be associated with.

Estimating the Rate and Amount of Tree Loss from Mountain Pine Beetle Infestations INTRODUCTION Walter E. Cole Mark D. McGregor. Because of recurrent depredations by the mountain pine beetle (Dendroctonus ponderosae Hopk.) in the In­ termountain West, managers have less than a 50 percent chance of growing lodgepole pine to inch (cm).

The largest infestations were detected primarily in southern and central Colorado. Blowdown events in Engelmann spruce stands, combined with long-term drought stress, warmer temperatures and extensive amounts of older, densely growing trees, have contributed to this ongoing epidemic.

Sincespruce beetle outbreaks have caused tree. Ecology, Silviculture, and Management of the Engelmann Spruce--Subalpine Fir Type in the Central and Southern Rocky Mountains (Agriculture Handbook No. ) [Robert R. Alexander] on *FREE* shipping on qualifying offers.

Engelmann spruce beetle definition is - a very destructive reddish brown or blackish bark beetle (Dendroctonus obesus) that feeds in the cambium of Engelmann spruce.

Spruce beetle (Dendroctonus rufipennis (Kirby)) outbreaks cause widespread mortality of Engelmann spruce (Picea engelmannii (Parry ex Engelm)) within Cited by: 6.

Title. An Engelmann spruce seed source study in the central Rockies / Related Titles. Series: Research paper RM, By. Shepperd, Wayne D. Jeffers, Richard M. Ronco, Frank. An IPS Beetle can easily be confused with a Pine beetle.

To stop these beetles from feasting on your spruce trees, it is important to properly identify them. When you know what species you are dealing with, you can take the most effective approach to get rid of them. Engelmann spruce (Picea engelmannii) and subalpine fir (Abies lasiocarpa) dominate the high-elevation forests of the central and southern Rocky Mountains.

Harvesting in the spruce-fir zones of this region was minimal until a major outbreak of the spruce bark beetle (Dendroctonus rufipennis) prompted land managers to conduct salvage. The study area, an ∼ km 2 landscape in White River National Forest, was affected by severe widespread fires around and by a spruce beetle outbreak in the s, which affected most of the forests that were dominated by Picea engelmannii (Engelmann spruce) and Abies lasiocarpa (subalpine fir).

The boundaries of the fires ca. and Cited by:   Some species of the beetles, such as the mountain pine beetle, attack and kill live trees. Others live in dead, weakened or dying hosts.

In Colorado alone. Rocky Mountain region, killed more trees, at a faster pace, for longer periods, and over more acreage than any other known infestations.

From tobark beetles killed trees on 46 million acres—an area just slightly smaller than Colorado. The U.S. Forest Service estimates that as. Title. Emergence period of Black Hills beetles from ponderosa pine in the central Rocky Mountains / Related Titles.

Series: Research note RM ; By. McCambridge, William F., Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) United States. Finally, Engelmann spruce in this region of Colorado has undergone extensive mortality as a result of spruce beetle in recent years (Andrus et al.,Harris,Hart et al., ) which may limit Engelmann spruce regeneration (DeRose et al., ; but see Veblen et al., ).

High spruce mortality sites were not included in this study Cited by: 4. Rocky Mountain National Park—one of the 10 most-visited national parks in the United States 8 —is among the areas in Colorado most ravaged by the mountain pine beetle.

7 The park, about 70 miles northwest of Denver, is home to the headwaters of the Colorado River. 8 Since it was established inthe park has never faced an outbreak of. In general, insect outbreaks in the Intermountain States showed a de- cided increase, notably because of increased activity by mountain pine beetle and Engelmann spruce beetle.

Conditions in the northern Rocky Mountain States did not worsen noticaebly over those reported for Less visible and farther from population centers, spruce beetle infestations hit a total ofhigh-elevation acres of spruce forest in – almost twice the area affected in Montana Field Guide contains a wealth of information about Montana's diverse species.

Odonata Central Orthoptera of the Northern Great Plains Orthoptera Species File Online Engelmann Spruce Bark Beetle — Dendroctonus rufipennis. Montana Field Guide. and temporal components of major spruce beetle outbreaks.

We then examine relationships between the size and severity of spruce beetle outbreaks and changes to the distribution of host species. Lastly we test associations between spruce beetle outbreak initia-tion and seasonal temperature and moisture conditions. Study area The spruce-fir Cited by: Jerry has noticed a large stand of them south of the entrance to Big Sky.

Unlike the blue-tinged Colorado spruce, Engelmann spruce’s needles are green. Their branches droop. On either side of Cashman Nursery are huge (60 foot) Engelmann spruce that were transplanted from the mountains by the original owner of the property.

gravity for Engelmann spruce. This. somewhat higher than the average,reported in this study but is nearly contained within the 95 percent confidence interval (). The average properties of Engelmann spruce obtained from randomly selected material are compared in table 4 to those previously reported.

A database that provides information on more than native tree and shrub species, and on almost insects and diseases found in Canada's forests.

More thanacres were killed by spruce beetles in Colorado incompared to 64, acres inand infestations are going strong, Author: Maddie Oatman.

Picea pungens (Blue Spruce, Colorado Blue Spruce, Water Spruce) Pinaceae (Pine Family) Montane, subalpine. Woodlands. Spring. My property, Novem In the late spring to early summer (depending on the elevation), male pollen cones emerge and even though they disperse their pollen within a weeks, they persist on the trees for many months into the winter.

Browse pictures and read growth / cultivation information about Engelmann Spruce, Silver Spruce, Mountain Spruce, Columbian Spruce (Picea engelmannii) 'Blue Magoo' supplied by.

Retrospective study of spruce beetle outbreaks in UT, AZ, CO (Hansen et al. ) • Study included stands treated between andand spruce beetle attacks occurred in the ’s. RESPONSES OF ENGELMANN SPRUCE FORESTS TO NITROGEN FERTILIZATION IN THE COLORADO ROCKY MOUNTAINS. Heather M. Rueth.

Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, Colorado by:. Interior Douglas-fir is a prevalent forest type throughout the central Rocky Mountains. Past management actions, specifically fire suppression, have led to an expansion of this forest type.

Although Douglas-fir forests cover a broad geographic range, few studies have described the interactive effects of various disturbance agents on forest health by: 4. Franco, several pine species, and Engelmann spruce, Picea engelmannii Parry ex Engelm, have been affected from the southern Rocky Mountains through northern British Columbia, Canada (Meddens et al.

). In particular, recent outbreaks of MPBs have been severe, long lasting, and well documented (Bentz et al.

).Cited by:   While the mountain pine beetle outbreak in the Southern Rocky Mountains is the best known and appears to be the worst in the historical record, the lesser known spruce beetle infestation has the potential to be equally or even more devastating in Colorado, said Hart, lead author on the new study.

33814 views Tuesday, November 17, 2020