scholarly journals The effect of paper birch (Betula papyrifera marsh.) root reinforcement on terrain stability in British Columbia

2001 ◽  
Author(s):  
Kirstin Anne Campbell
Keyword(s):  
British Columbia ◽  
Betula Papyrifera ◽  
Root Reinforcement ◽  
Paper Birch

scholarly journals Use of Wood Waste in Rehabilitation of Landings Constructed on Fine-Textured Soils, Central Interior British Columbia, Canada

2004 ◽  
Vol 19 (3) ◽  
pp. 175-183 ◽  
Author(s):  
Paul Sanborn ◽  
Chuck Bulmer ◽  
Dave Coopersmith
Keyword(s):  
British Columbia ◽  
Picea Glauca ◽  
Soil Bulk Density ◽  
N Fertilization ◽  
Betula Papyrifera ◽  
Access Structures ◽  
Recovery Treatment ◽  
Paper Birch ◽  
Interior West

Abstract Rehabilitation of temporary landings and roads constructed on fine-textured Alfisols must ameliorate poor soil structure, high bulk densities, and greatly reduced organic matter. A long-term field experiment in the central interior of British Columbia (BC) was begun in 1995 to compare soil properties and seedling growth on landings rehabilitated with three operationally feasible treatments: (1) incorporation of waste wood chips (140 t/ha, oven-dry basis), supplemented with 600 kg N/ha; (2) subsoiling; and (3) shallow tillage combined with recovery and spreading of topsoil. After 4 years, soil bulk density at 7–14 cm depth was lowest in the chip incorporation treatment. Although total C, N, and S, and mineralizable N concentrations were highest in the topsoil recovery treatment, the chip incorporation treatment had the highest 3-year growth rates of hybrid white spruce (Picea glauca × engelmannii). Foliar analyses indicated that macro- and micronutrient concentrations were generally adequate, with only S and Mg being of concern. Establishment of paper birch (Betula papyrifera) did not succeed due to severe rodent damage to seedlings, perhaps encouraged by rapid and dense revegetation by seeded agronomic legumes. Silviculturists should consider treatments involving incorporation of chipped wood wastes, with appropriate supplementary N fertilization, in rehabilitation of access structures on fine-textured soils in the BC central interior. West. J. Appl. For. 19(3):175–183.

Seed Source Testing of Paper Birch (Betula papyrifera) in the Interior of British Columbia

1999 ◽  
Vol 10 (1-2) ◽  
pp. 25-34 ◽  
Author(s):  
M. R. Carlson ◽  
V. G. Berger ◽  
C. D. B. Hawkins
Keyword(s):  
British Columbia ◽  
Seed Source ◽  
Betula Papyrifera ◽  
Paper Birch

Paper birch and lodgepole pine root reinforcement in coarse-, medium-, and fine-textured soils

2003 ◽  
Vol 33 (8) ◽  
pp. 1580-1586 ◽  
Author(s):  
K A Campbell ◽  
C DB Hawkins
Keyword(s):  
Shear Strength ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Shear Resistance ◽  
Soil Types ◽  
Betula Papyrifera ◽  
Root Reinforcement ◽  
Root Branching ◽  
Pine Trees ◽  
Paper Birch

The increased soil cohesion or reinforcement provided by roots varies among plant species and soil types. This study compared the contribution of paper birch (Betula papyrifera Marsh.) and lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) roots to soil shear resistance in two controlled environment experiments. Roots of paper birch and lodgepole pine trees contributed to a significant increase in soil shear resistance, regardless of soil type. At a shear depth of 0.20 to 0.44 m, paper birch contributed greater reinforcement than lodgepole pine. Both birch and pine provided the most root reinforcement in coarse-textured soil and the least reinforcement in medium-textured silt soil. Soil texture, porosity, and shear strength may have affected root branching of the two species, which in turn may have affected root reinforcement. At less than 1 year of age, paper birch trees planted as plugs can substantially increase soil shear strength compared with lodgepole pine in all soil types.

Semiochemical-mediated aggregation of the ambrosia beetle Trypodendron betulae (Coleoptera: Curculionidae: Scolytinae)

2020 ◽  
Vol 153 (1) ◽  
pp. 91-102 ◽  
Author(s):  
Susanne Kühnholz ◽  
Regine Gries ◽  
John H. Borden
Keyword(s):  
Aggregation Pheromone ◽  
Field Trapping ◽  
Betula Papyrifera ◽  
Detection Analysis ◽  
Enantiomeric Ratio ◽  
Linalool Oxide ◽  
Electroantennographic Detection ◽  
Paper Birch ◽  
Trap Catches ◽  
Chromatographic Mass

AbstractPorapak Q-captured volatiles from both sexes of Trypodendron betulae Swaine (Coleoptera: Curculionidae: Scolytinae) excised from newly attacked logs of paper birch, Betula papyrifera Marshall (Betulaceae), as well as volatiles from unattacked birch logs, were analysed by coupled gas chromatographic electroantennographic detection analysis. Active compounds were identified by gas chromatographic mass spectroscopy. The enantiomeric ratio of 6-ethenyl-2,2,6-trimethyloxan-3-ol (linalool oxide pyranoid) was determined using a Cyclodex B column. Field-trapping experiments disclosed that the female-produced aggregation pheromone of T. betulae is a blend of the (3S,6R)-trans- and (3R,6R)-cis-linalool oxide pyranoid. Trap catches were synergistically increased when the pheromone was combined with both the host volatile ethanol and with conophthorin, which was found in female beetles as well as host volatiles. Use of linalool oxide pyranoid reproductively isolates T. betulae from sympatric Trypodendron Stephens species for which only (+)-lineatin has been identified as an aggregation pheromone.

Physiological responses of paper birch to thinning in British Columbia

1995 ◽  
Vol 73 (1-3) ◽  
pp. 177-184 ◽  
Author(s):  
Jian R. Wang ◽  
Suzanne W. Simard ◽  
J.P. (Hamish) Kimmins
Keyword(s):  
British Columbia ◽  
Physiological Responses ◽  
Paper Birch
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