CHARACTERISTICS OF SPRUCE BEETLE (COLEOPTERA) INFESTATION IN FELLED WHITE SPRUCE IN ALASKA

1979 ◽  
Vol 111 (12) ◽  
pp. 1355-1360 ◽  
Author(s):  
Malcolm M. Furniss ◽  
Bruce H. Baker ◽  
Richard A. Werner ◽  
Larry C. Yarger
Keyword(s):  
White Spruce ◽  
Factors Affecting ◽  
Dryocoetes Affaber ◽  
Spruce Beetle

AbstractThe antiaggregation pheroraone MCH was ineffective in preventing spruce beetle infestation in felled spruce near Hope, Alaska. In October, most progeny were larvae but some were pupae and new adults. Densities of spruce beetle attacks and progeny on the shaded under side of stems were about twice those on the upper side, whereas attacks of Polygraphus rufipennis (Kirby) and Dryocoetes affaber (Mann.) on the upper side were 100 times those on the under side. Ips tridens engelmanni Swain was present in only 2% of bark samples. Entomophagous insects were scarce; only Medetera sp. and Coeloides sp. were found. Spruce beetle progeny were 45 times more abundant than attacking parents. Factors affecting the efficiency of sampling spruce beetle attacks and progeny are discussed.

SCOLYTIDAE ASSOCIATED WITH FELLED WHITE SPRUCE IN ALASKA

1984 ◽  
Vol 116 (3) ◽  
pp. 465-471 ◽  
Author(s):  
Richard A. Werner ◽  
Edward H. Holsten
Keyword(s):  
Species Diversity ◽  
White Spruce ◽  
Trypodendron Lineatum ◽  
Brooks Range ◽  
Kenai Peninsula ◽  
Dryocoetes Affaber ◽  
Baited Traps ◽  
Ips Perturbatus

AbstractPheromone baited traps and trap trees attracted an aggregate of 29 scolytid species associated with white spruce in three localities in Alaska. Species diversity was higher in the Fairbanks (lat. 64°45′) area than in the Brooks Range (lat. 68°15′) or Kenai Peninsula (lat. 60°37′). Scolytids were found inhabiting all bark-producing areas of the tree from the roots to small branches with the highest density in the tree bole. The most abundant scolytids were Ips perturbatus (Eichhoff), Ips tridens tridens (Mannerheim), Polygraphus rufipennis (Kirby), Dryocoetes affaber (Mannerheim), Trypodendron lineatum (Olivier), and Scolytus piceae (Swaine).

SCOLYTID FLIGHT IN WHITE SPRUCE STANDS IN ALASKA

1972 ◽  
Vol 104 (12) ◽  
pp. 1977-1983 ◽  
Author(s):  
Roy C. Beckwith
Keyword(s):  
White Spruce ◽  
Coastal Areas ◽  
Early Summer ◽  
Trypodendron Lineatum ◽  
Dendroctonus Rufipennis ◽  
Kenai Peninsula ◽  
Interior Alaska ◽  
Dryocoetes Affaber ◽  
Spruce Stands

AbstractWithin white spruce stands near Fairbanks, Alaska, and on the Kenai Peninsula, Alaska, Dendroctonus rufipennis, Ips spp., and Trypodendron lineatum disperse in late May and early June; other scolytids fly during June and July. Flight in interior Alaska precedes by about 2 weeks that on the Kenai Peninsula. Mean daily temperatures during spring and early summer are generally warmer in the interior than in coastal areas. There was a large increase in the total number of beetles in a thinned area, mostly of Dryocoetes affaber.

White spruce regeneration following a major spruce beetle outbreak in forests on the Kenai Peninsula, Alaska

2008 ◽  
Vol 255 (10) ◽  
pp. 3571-3579 ◽  
Author(s):  
Keith Boggs ◽  
Michelle Sturdy ◽  
Daniel J. Rinella ◽  
Matthew J. Rinella
Keyword(s):  
White Spruce ◽  
Kenai Peninsula ◽  
Spruce Beetle

scholarly journals Factors affecting white spruce and aspen survival after partial harvest

2011 ◽  
Vol 49 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Kevin A. Solarik ◽  
W. Jan A. Volney ◽  
Victor J. Lieffers ◽  
John R. Spence ◽  
Andreas Hamann
Keyword(s):  
White Spruce ◽  
Factors Affecting ◽  
Partial Harvest

Field Evaluation of Fenitrothion, Permethrin, and Chlorpyrifos for Protecting White Spruce Trees from Spruce Beetle (Coleoptera: Scolytidae) Attack in Alaska1

1984 ◽  
Vol 77 (4) ◽  
pp. 995-998 ◽  
Author(s):  
Richard A. Werner ◽  
Robert D. Averill ◽  
Felton L. Hastings ◽  
Jerry W. Hilgert ◽  
U. E. Brady
Keyword(s):  
Field Evaluation ◽  
White Spruce ◽  
Spruce Beetle

Mortality of white spruce during a spruce beetle outbreak on the Kenai Peninsula in Alaska

1983 ◽  
Vol 13 (1) ◽  
pp. 96-101 ◽  
Author(s):  
Richard A. Werner ◽  
Edward H. Holsten
Keyword(s):  
White Spruce ◽  
Permanent Plots ◽  
Kenai Peninsula ◽  
South Central ◽  
Creek Watershed ◽  
Spruce Beetle ◽  
Spruce Stands ◽  
Long Term Impact ◽  
The Impact

White spruce (Piceaglauca (Moench) Voss) stands in the Resurrection Creek watershed in south-central Alaska were infested by spruce bettles, Dendroctonusrufipennis Kirby, between 1974 and 1975. Thirty permanent plots were established within the infested area in 1976 to evaluate the immediate and long-term impact on white spruce stands. Plots were revisited annually for 5 years. Between 1976 and 1980, 29% of all white spruce was killed by spruce beetles. This loss accounted for 59% of the commercial white spruce volume in the watershed. Mortality was greatest in the larger diameter classes during the early part of the infestation, but smaller diameter trees were subsequently attacked as the number of noninfested trees declined. The impact of spruce beetles on structure and species composition of white spruce stands is given along with a discussion of management implications.

scholarly journals REGENERATION IN MANITOBA

1962 ◽  
Vol 38 (1) ◽  
pp. 74-78
Author(s):  
R. A. Haig
Keyword(s):  
Natural Regeneration ◽  
Black Spruce ◽  
White Spruce ◽  
Jack Pine ◽  
Experimental Conditions ◽  
Artificial Regeneration ◽  
Factors Affecting ◽  
Seed Supply ◽  
Degree Of Control

Surveys have shown that after normal logging operations in Manitoba, the regeneration of white spruce, jack pine and black spruce was not sufficient to provide future well-stocked stands. Other studies, in Manitoba and elsewhere, have determined many of the factors affecting regeneration, and of these the two important ones subject to some degree of control appeared to be seed supply and seedbed conditions. By modifying the seed supply and seedbed conditions excellent regeneration of all three species has been obtained under experimental conditions. The costs involved in these treatments were less than those normally associated with artificial regeneration. It is suggested that the recommended treatments to promote natural regeneration be introduced in current logging operations carried out on an operational scale.

Comparison of white, Sitka, and Lutz spruce as hosts of the spruce beetle in Alaska

1990 ◽  
Vol 20 (3) ◽  
pp. 292-297 ◽  
Author(s):  
Edward H. Holsten ◽  
Richard A. Werner
Keyword(s):  
Weather Conditions ◽  
White Spruce ◽  
Sitka Spruce ◽  
Host Suitability ◽  
Host Susceptibility ◽  
Southeast Alaska ◽  
South Central ◽  
Spruce Beetle ◽  
Spruce Stands ◽  
High Precipitation

When white spruce is infested with spruce beetle broods, Dendroctonusrufipennis (Kirby), more beetles are produced than when Lutz and Sitka spruce are infested. In spite of host suitability differences, outbreaks of the spruce beetle have been more frequent and severe in stands of Lutz spruce than in white or Sitka spruce. Host suitability may be as important as host susceptibility and weather conditions in the development of spruce beetle outbreaks in south central Alaska. Cool summer temperatures and high precipitation limit the rate of development and growth of beetles in maritime Sitka spruce stands of southeast Alaska, but in white spruce stands of interior Alaska, cold winter temperatures usually help to maintain endemic levels. When these environmental factors are ameliorated, however, spruce beetle populations increase rapidly to epidemic levels.

scholarly journals Factors Affecting Plantation Grown White Spruce (Picea Glauca) Acoustic Velocity

2016 ◽  
Vol 114 (6) ◽  
pp. 629-637 ◽  
Author(s):  
Alexa Bérubé-Deschênes ◽  
Tony Franceschini ◽  
Robert Schneider
Keyword(s):  
Picea Glauca ◽  
White Spruce ◽  
Acoustic Velocity ◽  
Factors Affecting
Sign in / Sign up

Export Citation Format

Share Document