Evidence of endophytic diazotrophic bacteria in lodgepole pine and hybrid white spruce trees growing in soils with different nutrient statuses in the West Chilcotin region of British Columbia, Canada

2018 ◽  
Vol 430 ◽  
pp. 558-565 ◽  
Author(s):  
Akshit Puri ◽  
Kiran Preet Padda ◽  
Chris P. Chanway
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
White Spruce ◽  
Diazotrophic Bacteria ◽  
The West ◽  
Endophytic Diazotrophic Bacteria

Growth of lodgepole pine and white spruce in the central interior of British Columbia

1982 ◽  
Vol 12 (3) ◽  
pp. 567-575 ◽  
Author(s):  
S. Eis ◽  
D. Craigdallie ◽  
C. Simmons
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
Mixed Forest ◽  
Volume Growth ◽  
White Spruce ◽  
Mixed Stands ◽  
Potential Growth ◽  
Crown Width ◽  
Forest Sites ◽  
Second Growth

Height, diameter, volume growth, crown width, and stocking of lodgepole pine (Pinuscontorta Dougl.) and white spruce (Piceaglauca (Moench) Voss) were studied on the three most common forest sites in the central interior of British Columbia, to estimate their potential growth and their suitability for pure or mixed stands in managed second-growth forests established by planting. Spruce only should be planted on moist to wet Alluvium sites; both species appear to be equally suitable on moist Aralia sites, and pine only should be planted on dry to moist Cornus–Moss sites. In mixed forest, suppressed spruce will have little volume at the time of pine harvest. In general, managed, fully stocked second-growth forests should produce greater volume per hectare than the present natural, unmanaged forests.

scholarly journals Yield Implications of Site Preparation Treatments for Lodgepole Pine and White Spruce in Northern British Columbia

Forests ◽  
2010 ◽  
Vol 1 (1) ◽  
pp. 25-48 ◽  
Author(s):  
Francesco Cortini ◽  
Philip G. Comeau ◽  
Jacob O. Boateng ◽  
Lorne Bedford
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
White Spruce ◽  
Site Preparation

Black-stain root disease on lodgepole pine in British Columbia

1986 ◽  
Vol 16 (5) ◽  
pp. 996-999 ◽  
Author(s):  
R. S. Hunt ◽  
D. J. Morrison
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
Root Disease ◽  
Risk Of Infection ◽  
Severe Damage ◽  
The West ◽  
Clear Cut

Surveys were made for incidence and damage by black-stain root disease (Ceratocystiswageneri) on Pinuscontorta in British Columbia. Incidence surveys indicated the hard pine pathotype to be largely restricted to the west Kootenays, northern Okanagan, and southern Cariboo. Damage surveys of 177 ha in 12 stands revealed severe damage in pure, dense stands, 80 years and older, at elevations above 1000 m. In one-half of the stands, C. wageneri was associated with Armillariaobscura; in one-third, some trees in C. wageneri centres were currently infested with Dendroctonusponderosae. Most disease centres were small, but sometimes there were many per stand, so that up to 46% of a stand was affected. The pattern of disease centres suggested that unknown vectors were responsible for initiating disease centres. Isolations from excavated stumps indicated little survival of C. wageneri after 1 year and none after2 years. Infested stands can be clear-cut and regenerated to P. contorta without risk of infection from the previous stand.

STRUCTURE, STRATIGRAPHY, AND PALEONTOLOGY OF AN UPPER TRIASSIC SECTION ON THE WEST COAST OF BRITISH COLUMBIA

1965 ◽  
Vol 2 (5) ◽  
pp. 442-484 ◽  
Author(s):  
Donald Carlisle ◽  
Takeo Susuki
Keyword(s):  
British Columbia ◽  
Structural Information ◽  
Pillow Lava ◽  
Middle Part ◽  
Upper Triassic ◽  
Coast Range ◽  
Thermal Alteration ◽  
The West ◽  
Coastal British Columbia ◽  
Sedimentary Unit

The highly deformed section at Open Bay is one of the few good exposures of a thick sedimentary unit within the prebatholithic rocks along coastal British Columbia. It provides new structural information relating to emplacement of a part of the Coast Range batholith and it contains an important Upper Triassic fauna unusually well represented. Structural and paleontological analyses are mutually supporting and are purposely combined in one paper.Thirteen ammonite genera from 14 localities clearly substantiate McLearn's tentative assignment to the Tropites subbullatus zone (Upper Karnian) and suggest a restriction to the T. dilleri subzone as defined in northern California.Contrary to an earlier view, the beds are lithologically similar across the whole bay except for variations in the intensity of deformation and thermal alteration. Their contact with slightly older relatively undeformed flows is apparently a zone of dislocation. Stratigraphic thicknesses cannot be measured with confidence, and subdivision into "Marble Bay Formation" and "Open Bay Group" cannot be accepted. Open Bay Formation is redefined to include all the folded marble and interbedded pillow lava at Open Bay. Lithologic and biostratigraphic correlation is suggested with the lower middle part of the Quatsino Formation on Iron River, 24 miles to the southwest. Basalt flows and pillowed volcanics west of Open Bay are correlated with the Texada Formation within the Karmutsen Group.The predominant folding is shown to precede, accompany, and follow intrusion of numerous andesitic pods and to precede emplacement of quartz diorite of the batholith. Structural asymmetry is shown to have originated through gentle cross-folding and emplacement of minor intrusives during deformation.

scholarly journals Gitksan

2016 ◽  
Vol 46 (3) ◽  
pp. 367-378 ◽  
Author(s):  
Jason Brown ◽  
Henry Davis ◽  
Michael Schwan ◽  
Barbara Sennott
Keyword(s):  
British Columbia ◽  
The South ◽  
The West ◽  
The North

Gitksan (git) is an Interior Tsimshianic language spoken in northwestern British Columbia, Canada. It is closely related to Nisga'a, and more distantly related to Coast Tsimshian and Southern Tsimshian. The specific dialect of Gitksan presented here is what can be called Eastern Gitksan, spoken in the villages of Kispiox (Ansbayaxw), Glen Vowell (Sigit'ox), and Hazelton (Git-an'maaxs), which contrasts with the Western dialects, spoken in the villages of Kitwanga (Gitwingax), Gitanyow (Git-anyaaw), and Kitseguecla (Gijigyukwhla). The primary phonological differences between the dialects are a lexical shift in vowels and the presence of stop lenition in the Eastern dialects. While there exists a dialect continuum, the primary cultural and political distinction drawn is between Eastern and Western Gitksan. For reference, Gitksan is bordered on the west by Nisga'a, in the south by Coast Tsimshian and Witsuwit'en, in the east by Dakelh and Sekani, and in the north by Tahltan (the latter four of these being Athabaskan languages).

scholarly journals Spore Dispersal by Dothistroma septosporum in Northwest British Columbia

2015 ◽  
Vol 105 (1) ◽  
pp. 69-79 ◽  
Author(s):  
Kennedy Boateng ◽  
Kathy J. Lewis
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
Summer Precipitation ◽  
Disease Spread ◽  
Spore Dispersal ◽  
Mixed Species ◽  
Inoculum Sources ◽  
Pine Trees ◽  
Dothistroma Septosporum ◽  
Needle Blight

We studied spore dispersal by Dothistroma septosporum, causal agent of a serious outbreak of red band needle blight in lodgepole pine plantations in northwest British Columbia. Spore abundance was assessed at different distances and heights from inoculum sources and microclimatic factors were recorded during two consecutive years. Conidia were observed on spore traps from June to September during periods of rainfall. It was rare to detect spores more than 2 m away from inoculum sources. The timing and number of conidia dispersed were strongly tied to the climatic variables, particularly rainfall and leaf wetness. Should the trend toward increased spring and summer precipitation in the study area continue, the results suggest that disease spread and intensification will also increase. Increasing the planting distances between lodgepole pine trees through mixed species plantations and overall reduction in use of lodgepole pine for regeneration in wet areas are the best strategies to reduce the spread of the disease and enhance future productivity of plantations in the study area.

scholarly journals Identifying and Characterizing Important Trembling Aspen Competitors with Juvenile Lodgepole Pine in Three South-Central British Columbia Ecosystems

2012 ◽  
Vol 2012 ◽  
pp. 1-12
Author(s):  
Teresa A. Newsome ◽  
Jean L. Heineman ◽  
Amanda F. Linnell Nemec
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
Geographic Range ◽  
Regression Analyses ◽  
Relative Height ◽  
Trembling Aspen ◽  
Ecosystem Productivity ◽  
Height Ratio ◽  
Critical Height ◽  
South Central

Critical height ratios for predicting competition between trembling aspen and lodgepole pine were identified in six juvenile stands in three south-central British Columbia ecosystems. We used a series of regression analyses predicting pine stem diameter from the density of neighbouring aspen in successively shorter relative height classes to identify the aspen-pine height ratio that maximizedR2. Critical height ratios varied widely among sites when stands were 8–12 years old but, by age 14–19, had converged at 1.25–1.5. MaximumR2values at age 14–19 ranged from 13.4% to 69.8%, demonstrating that the importance of aspen competition varied widely across a relatively small geographic range. Logistic regression also indicated that the risk of poor pine vigour in the presence of aspen varied between sites. Generally, the degree of competition, risk to pine vigour, and size of individual aspen contributing to the models declined along a gradient of decreasing ecosystem productivity.

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