Keyword: damage

• Measuring and modelling spruce leader temperatures.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0200.htm
  In The White Pine Weevil: Biology, Damage and Management. R.I. Alfaro, G. Kiss, and G.R. Fraser. (editors). FRDA Rep. 226, B.C. Min. For., Victoria. pp. 33-42. ...

• Spruce weevil hazard mapping based on climate and ground surveys.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0201.htm
  In The White Pine Weevil: Biology, Damage and Management. R.I. Alfaro, G. Kiss, and G.R. Fraser. (editors). FRDA Rep. 226, B.C. Min. For., Victoria, pp. 23-32 ...

• Heat damage in boxed white spruce (
  http://www.for.gov.bc.ca/hre/pubs/pubs/0349.htm
  Heat damage in boxed white spruce (Picea glauca [Moench.] Voss) seedlings: Its pre-planting detection and effect on field performance. ...

• Comparison of Two Fluorometer Systems to Detect Freeze Damage on White Spruce needles.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0357.htm
  Comparison of Two Fluorometer Systems to Detect Freeze Damage on White Spruce needles. ...

• Introduction to logistic regression models: with worked forestry examples.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0407.htm
  Logistic regression is a useful tool for analyzing data that includes categorical response variables, such as tree survival, presence or absence of a species in quadrats, and presence of disease or damage to seedlings. The models work by fitting the probability of response to the proportions of responses observed. For instance, the number of outplanted seedlings in 50-tree rows that die from frost damage is an observed response. These observed numbers are converted to proportions which are then fitted by models that determine the probability that a seedling will die from frost damage. Normal distribution approximations to the proportions and the consequent analytical methods (e.g., regression and analysis of variance) can be used if large sample sizes exist for each experimental unit. However, logistic regression does not require large sample sizes for the data analysis to be feasible. Furthermore, it is possible to analyze individual tree data. ...

• Relationship of feeding damage by red squirrels to cultural treatments in young stands of lodgepole pine.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0504.htm
  Relationship of feeding damage by red squirrels to cultural treatments in young stands of lodgepole pine. ...

• Barking damage by red squirrels in juvenile-spaced lodgepole pine stands in south-central British Columbia.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0506.htm
  Barking damage by red squirrels in juvenile-spaced lodgepole pine stands in south-central British Columbia. ...

• Barking damage by red squirrels in juvenile-spaced lodgepole pine stands in the Kamloops For. Reg.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0509.htm
  Barking damage by red squirrels in juvenile-spaced lodgepole pine stands in the Kamloops For. Reg. ...

• Using a grazing pressure index to predict cattle damage of regenerating tree seedlings.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0637.htm
  Using a grazing pressure index to predict cattle damage of regenerating tree seedlings. ...

• Response of lodgepole pine seedlings to simulated cattle damage.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0640.htm
  Response of lodgepole pine seedlings to simulated cattle damage. ...

• Tree seedling damage on grazed clearcuts.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0645.htm
  Tree seedling damage on grazed clearcuts. ...

• The impacts of grazing pressure, stocking rates, and forage seeding on damage of lodgepole pine seedlings.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0652.htm
  The impacts of grazing pressure, stocking rates, and forage seeding on damage of lodgepole pine seedlings. ...

• Response of lodgepole pine seedlings to simulated cattle damage.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0653.htm
  Response of lodgepole pine seedlings to simulated cattle damage. ...

• Tree seedling damage on grazed clearcuts.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0654.htm
  Tree seedling damage on grazed clearcuts. ...

• The effects of cattle grazing, forage seeding, basal scarring and shoot damage on forest regeneration - Project No. 3.55.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0656.htm
  The effects of cattle grazing, forage seeding, basal scarring and shoot damage on forest regeneration - Project No. 3.55. ...

• Recent advances in white pine weevil research in British Columbia.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0716.htm
  In The White pine Weevil: biology, damage and management. R.I. Alfaro, G. Kiss, and R.G. Fraser. (editors). Proceedings of a symposium held January 19-21, 1994 In Richmond B.C. Joint Can. For. Serv. - Min. of FRDA Report No. 226. ...

• Spruce terpenes. Expression and weevil resistance.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0717.htm
  In The white pine weevil: biology, damage and management. R.I. Alfaro, G. Kiss, and R.G. Fraser. (Editors). Proceedings of a symposium held January 19-21, 1994 Richmond, B.C. Joint rep. pub by Can. For. Serv. and B.C. Min. For., Victoria, B.C. FRDA Report 226. ...

• Levels of weevil damage among Sitka spruce provenances and families near Sayward, British Columbia.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0829.htm
  Levels of weevil damage among Sitka spruce provenances and families near Sayward, British Columbia. ...

• Provenance variation in weevil attack in Sitka spruce.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0831.htm
  In: Proc. Symp. The White Pine Weevil: biology, damage and management. R.I. Alfaro, G. Kiss and R.G. Fraser. (Editors). January 19-21, 1994. Richmond, B.C. FRDA Report No. 226. pp. 98-109. ...

• Genetic resistance to the white pine weevil in Sitka spruce.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0833.htm
  Sitka spruce (Picea sitchensis) accounts for only about 2% of the total coastal reforestation in British Columbia, despite its stumpage price which is the second highest in the province and about twice as high as the average of other species (B.C. Ministry of Forests 1990). Destructive damage caused by the white pine weevil (Pissodes strobi) to plantation Sitka spruce is the major deterrent to reforestation with this species in coastal British Columbia (MacSiurtain 1981; Alfaro 1982, 1989). Planting is now limited to low weevil hazard areas on the Queen Charlotte Islands, North Vancouver Island, and the outer coast of the mid- and north mainland (Heppner and Wood 1984). None of the control techniques, including shading, clipping, insecticides, or biological control, has proved to be sufficiently effective and practical (Cozens 1983). There is increased interest in genetic control, alone and in combination with other control methods, since the discovery of apparent provenance differences in to ...

• Forest productivity and soil conditions on rehabilitated landings: Interior B.C. Sept 1999.
  http://www.for.gov.bc.ca/hre/pubs/pubs/0984.htm
  In British Columbia, soil rehabilitation aims to restore productivity to forest roads, landings, and trails that are no longer needed for access, and to areas that have suffered unavoidable or accidental damage as a result of forestry operations. Soil rehabilitation is an important component of management strategies to maintain or enhance timber supply in the working forest. Restoring productivity to degraded soils can also enhance other environmental values, and contribute to successful ecosystem or watershed restoration. Soil rehabilitation research was initiated in British Columbia over two decades ago (e.g., Vyse and Mitchell 1977), and numerous contributions since that time have been reviewed by Bulmer (1998) and Sanborn et al. (1999a). In addition, a network of new research sites has been established to test new approaches to soil rehabilitation and to improve cost-effectiveness (Berch and Xiao 1998; Dykstra and Curran 1998; Inland Timber Management Ltd. 1998; Bulmer and Curran 1999a; Sanborn et ...

• Risk assessment for ultraviolet-B radiation damage to economically-important tree species in British Columbia.
  http://www.for.gov.bc.ca/hre/pubs/pubs/1042.htm
  Risk assessment for ultraviolet-B radiation damage to economically-important tree species in British Columbia. ...

• Physiological tests for predicting stress damage in tree seedlings 2) Quantum yield (QY) measured by chlorophyll fluorescence (CF).
  http://www.for.gov.bc.ca/hre/pubs/pubs/1058.htm
  Physiological tests for predicting stress damage in tree seedlings 2) Quantum yield (QY) measured by chlorophyll fluorescence (CF). ...

• Quantum leak: Estimating stress damage in nursery seedlings.
  http://www.for.gov.bc.ca/hre/pubs/pubs/1059.htm
  Quantum leak: Estimating stress damage in nursery seedlings. ...

• Predicting stress damage in tree seedlings with quantum yield and electrolyte leakage.
  http://www.for.gov.bc.ca/hre/pubs/pubs/1060.htm
  Predicting stress damage in tree seedlings with quantum yield and electrolyte leakage. ...

• Physiological tests for predicting stress damage in tree seedlings 1) Stress-enhanced electrolyte leakage (SEEL).
  http://www.for.gov.bc.ca/hre/pubs/pubs/1063.htm
  Physiological tests for predicting stress damage in tree seedlings 1) Stress-enhanced electrolyte leakage (SEEL). ...

• Variable chlorophyll fluorescence as a fast screen for frost hardiness and frost damage in white spruce seedlings.
  http://www.for.gov.bc.ca/hre/pubs/pubs/1066.htm
  Variable chlorophyll fluorescence as a fast screen for frost hardiness and frost damage in white spruce seedlings. ...

• Douglas-fir Fertilization with Biosolids: Five-year Results at Whistler, B.C.
  http://www.for.gov.bc.ca/hre/pubs/pubs/1109.htm
  Biosolids at 750, 1000, and 1500 kg-n/ha and conventional fertilizer at 225 kg-n/ha were applied in each of three seasons (spring, summer, and fall) to a 15-year-old coastal Douglas-fir (pseudotsuga menziesii [Mirb.] Franco) plantation that had recently been precommercially thinned and pruned. Five-year results showed that rate and timing effects were independent. No height-growth response was evident, but annual diameter growth for all biosolids treatments averaged three times higher than for conventional fertilizer. Seasonal application differences were small but statistically significant. All plots, including the controls, experienced extensive top damage from snow and ice. Similar to growth, damage was greatest with biosolids fertilization. The study shows promise for biosolids fertilization as a viable alternative to conventional fertilization, but application in locations prone to snow and ice damage should be avoided. ...

• Silviculture Treatments for Ecosystem Management in the Sayward (STEMS): Establishment Report for STEMS 1, Snowden Demonstration Forest
  http://www.for.gov.bc.ca/hre/pubs/pubs/1336.htm
  Douglas-fir Young-Growth Production Forests" in the Capitol Forest near Olympia, Washington, developed jointly by the managers of the Washington State Department of Natural Resources and the scientists of the Pacific Northwest Research Station. The decision to replicate the treatments in the Sayward Forest was based on the similarity of knowledge gaps in the Sayward Forest and the Capitol Forest and because replication in Washington and British Columbia results in greater statistical power and ability to extrapolate over a wide geographic area. This technical report describes the establishment of the first replication of STEMS in 2001 in the Snowden Demonstration Forest. Ongoing studies include: Tree growth and stand development, including understory vegetation Regeneration and light availability Windthrow, mortality, and coarse woody debris recruitment Harvesting production and impacts of residual tree damage and soil disturbance (in partnership with the Forest Engineering and Re ...