The Bark Beetle Complex Associated with Lodgepole Pine Slash in Alberta: Part IV—Distribution, Population Densities, and Effects of Several Environmental Factors

1957 ◽  
Vol 89 (10) ◽  
pp. 437-447 ◽  
Author(s):  
R. W. Reid
Keyword(s):  
Environmental Factors ◽  
Boreal Forest ◽  
Bark Beetle ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Rocky Mountain ◽  
Pure Stand ◽  
Population Densities ◽  
Experimental Area

The investigation reported in this series was carried out with the object of determining the bark-beetle complex associated with slash accumulated under different cutting methods and the hiolosies, distribution, and abundance of the more important bark-beetle parasites and predators throughout the experimental area. This area is in the region termed by Halliday (1937), the B19 or foot-hills section of the Boreal Forest. The experimental area contained a pure stand of even-aged (80 years) lodgepole pine, Pinus contorta Dougl., var. latifolia Engelm., and is located near Strachan, approximately 20 miles southwest of Rocky Mountain House, Alberta.

Entomocorticium dendroctoni gen. et sp. nov. (Basidiomycotina), a possible nutritional symbiote of the mountain pine beetle in lodgepole pine in British Columbia

1987 ◽  
Vol 65 (1) ◽  
pp. 95-102 ◽  
Author(s):  
H. S. Whitney ◽  
R. J. Bandoni ◽  
F. Oberwinkler
Keyword(s):  
British Columbia ◽  
Bark Beetle ◽  
Pinus Contorta ◽  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Pine Bark ◽  
Mountain Pine ◽  
Pine Beetle ◽  
Blue Stain Fungi ◽  
Blue Stain

A new basidiomycete, Entomocorticium dendroctoni Whitn., Band. & Oberw., gen. et sp. nov., is described and illustrated. This cryptic fungus intermingles with blue stain fungi and produces abundant essentially sessile basidiospores in the galleries and pupal chambers of the mountain pine bark beetle (Dendroctonus ponderosae Hopkins Coleoptera: Scolytidae) in lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.). The insect apparently disseminates the fungus. Experimentally, young partially insectary reared adult beetles fed E. dendroctoni produced 19% more eggs than beetles fed the blue stain fungi.

scholarly journals Life history of a secondary bark beetle, Pseudips mexicanus (Coleoptera: Curculionidae: Scolytinae), in lodgepole pine in British Columbia

2009 ◽  
Vol 141 (1) ◽  
pp. 56-69 ◽  
Author(s):  
G.D. Smith ◽  
A.L. Carroll ◽  
B.S. Lindgren
Keyword(s):  
Life History ◽  
Bark Beetle ◽  
Pinus Contorta ◽  
Life History Traits ◽  
Lodgepole Pine ◽  
Degree Days ◽  
Northern Portion ◽  
History Of ◽  
Bark Beetle Associates

AbstractPseudips mexicanus (Hopkins) is a secondary bark beetle native to western North and Central America that attacks most species of pine (Pinus L. (Pinaceae)) within its range. A pair of life-history studies examined P. mexicanus in other host species, but until now, no work has been conducted on lodgepole pine (Pinus contorta Douglas ex Louden var. latifolia Engelm. ex S. Watson). Pseudips mexicanus in lodgepole pine was found to be polygynous. Galleries were shorter, offspring smaller, and the eggs laid per niche and the potential progeny fewer than in populations from California and Guatemala. Development from the time of female attack to emergence of adult offspring took less than 50 days at 26.5 °C, and the accumulated heat required to complete the life cycle was determined to be 889.2 degree days above 8.5 °C, indicating that in the northern portion of its range P. mexicanus is univoltine. Determination of these life-history traits will facilitate study of interactions between P. mexicanus and other bark beetle associates in lodgepole pine.

scholarly journals DECAY OF LODGEPOLE PINE IN TWO FOOTHILLS SECTIONS OF THE BOREAL FOREST IN ALBERTA

1963 ◽  
Vol 39 (4) ◽  
pp. 422-435 ◽  
Author(s):  
A. A. Loman ◽  
G. D. Paul
Keyword(s):  
Boreal Forest ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
The Other ◽  
Decay Fungi ◽  
Coniophora Puteana ◽  
Considerable Loss

Cull in lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) is highly variable in the B19a and B19c Sections of the Boreal Forest in Alberta, depending upon whether the wood is used for pulp or sawed products. Sixty-nine per cent of 2,436 sample trees were suspected of containing volumes of red heartwood stain and advanced decay on the basis of the presence of external defects. Fifty-three per cent of the suspects were sound, 36 per cent had red heartwood stain and 11 per cent were partly or entirely decayed. Sixty per cent of the trees without external defects were sound, and 40 per cent had red heartwood stain. In cubic-foot measure decay was unimportant in stands less than 100 years old. In older stands a few infested trees accounted for most of the decay. In foot-board measure 62 of 2,746 sample trees were totally culled and 122 were partially culled. Considerable loss occured in 90-year old and older stands near Whitecourt and in 170-year old stands in the other sample areas. Fomes pini (Thore) Lloyd and Polyporus tomentosus Fr. were the principal fungi isolated from white pitted trunk rots. P. tomentosus and Flammula alnicola (Fr.) Kummer were isolated most frequently from white pitted root and butt rots, and Coniophora puteana (Schum. ex Fr.) Karst. from brown cubical root and butt rots. Peniophora pseudo-pini Weres. and Gibson was the most frequently isolated fungus but was always associated with red heartwood stain. Scars of all kinds were the most important points of entry for decay fungi.

Effects of induced translocation stress and bark beetle attack (Dendroctonus ponderosae) on heat pulse velocity and the dynamic wound response of lodgepole pine (Pinus contorta var. latifolia)

1986 ◽  
Vol 64 (11) ◽  
pp. 2669-2674 ◽  
Author(s):  
R. H. Miller ◽  
H. S. Whitney ◽  
A. A. Berryman
Keyword(s):  
Bark Beetle ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Dendroctonus Ponderosae ◽  
Pathogenic Fungi ◽  
Heat Pulse ◽  
Pulse Velocity ◽  
Wound Response ◽  
Wound Responses

The effects of induced translocation stress upon heat pulse velocity, reactions to pathogenic fungi, and bark beetle attack dynamics were compared before, during, and after severe cooling of the bole and after girdling of xylem and phloem in Pinus contorta Douglas var. latifolia Engelmann. Cooled trees evidenced a reduction of heat pulse velocity and the elimination of observable wound responses, which returned to normal upon cessation of the stress the following year. A tree naturally attacked and colonized by Dendroctonus ponderosae Hopkins also evidenced reduced heat pulse velocity within 2 weeks of bark beetle attack. Heat pulse velocity in girdled trees did not change. Stress due to drought and (or) bark beetle attack in nature may be analogous to that induced by cooling. Such stress may reduce a tree's ability to resist bark beetle attack and fungus invasion.

scholarly journals Vegetation response to wildfire and climate forcing in a Rocky Mountain lodgepole pine forest over the past 2500 years

The Holocene ◽  
2020 ◽  
Vol 30 (11) ◽  
pp. 1493-1503
Author(s):  
Barrie V Chileen ◽  
Kendra K McLauchlan ◽  
Philip E Higuera ◽  
Meredith Parish ◽  
Bryan N Shuman
Keyword(s):  
Pinus Contorta ◽  
Vegetation Change ◽  
Fire History ◽  
Lodgepole Pine ◽  
Rocky Mountain ◽  
Pine Forest ◽  
The Past ◽  
High Severity ◽  
Decadal Scale ◽  
Pollen Types

Wildfire is a ubiquitous disturbance agent in subalpine forests in western North America. Lodgepole pine ( Pinus contorta var. latifolia), a dominant tree species in these forests, is largely resilient to high-severity fires, but this resilience may be compromised under future scenarios of altered climate and fire activity. We investigated fire occurrence and post-fire vegetation change in a lodgepole pine forest over the past 2500 years to understand ecosystem responses to variability in wildfire and climate. We reconstructed vegetation composition from pollen preserved in a sediment core from Chickaree Lake, Colorado, USA (1.5-ha lake), in Rocky Mountain National Park, and compared vegetation change to an existing fire history record. Pollen samples ( n = 52) were analyzed to characterize millennial-scale and short-term (decadal-scale) changes in vegetation associated with multiple high-severity fire events. Pollen assemblages were dominated by Pinus throughout the record, reflecting the persistence of lodgepole pine. Wildfires resulted in significant declines in Pinus pollen percentages, but pollen assemblages returned to pre-fire conditions after 18 fire events, within c.75 years. The primary broad-scale change was an increase in Picea, Artemisia, Rosaceae, and Arceuthobium pollen types, around 1155 calibrated years before present. The timing of this change is coincident with changes in regional pollen records, and a shift toward wetter winter conditions identified from regional paleoclimate records. Our results indicate the overall stability of vegetation in Rocky Mountain lodgepole pine forests during climate changes and repeated high-severity fires. Contemporary deviations from this pattern of resilience could indicate future recovery challenges in these ecosystems.

Taxonomy and chemistry of a new fungus from bark beetle infested Pinus contorta var. latifolia. Part 1. Arthrographis pinicola sp.nov.

1990 ◽  
Vol 36 (2) ◽  
pp. 77-82 ◽  
Author(s):  
Lynne Sigler ◽  
Yuichi Yamaoka ◽  
Yasuyuki Hiratsuka
Keyword(s):  
Key Words ◽  
Bark Beetle ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Antifungal Compound ◽  
Western Canada ◽  
Blue Stain Fungi ◽  
Blue Stain ◽  
Ips Latidens

Arthrographis pinicola sp.nov. (Hyphomycetes) is described; it was isolated from galleries and adult beetles of Ips latidens and from galleries of Dendroctonus ponderosae in Pinus contorta var. latifolia in western Canada. In I. latidens infested lodgepole pine, this species extensively colonizes nuptial chambers and egg galleries, characteristically forming floccose conidiomata composed of repeatedly branched hyphae which divide to form arthroconidia having schizolytic dehiscence. The fungus is antagonistic to some blue stain fungi in vitro. Arthrographis pinicola is compared with other species of Arthrographis, and with Arthropsis microsperma and the discomycete Pezizella chapmanii. Key words: Arthrographis pinicola, Hyphomycetes, bark beetle fungi, antifungal compound, arthrographol.

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