Keyword: douglas-fir
- Site index curves and tables for British Columbia: Coastal species.
http://www.for.gov.bc.ca/hre/pubs/pubs/0001.htm
The objective of this report was to disseminate, in graphical and tabular format, site index relationships selected by the Coastal Forest Productivity Council in cooperation with the Ministry of Forest and Lands for use on the coast of British Columbia. The species included coastal Douglas-fir (pseudotsuga menziesii (Mirb.) Franco), western hemlock (Tsuga heterophylla (Raf.) Sarg.), western redcedar (Thuja plicata Donn), amibilis fir (Abies amabilis (Dougl.) Forb.), Sitka spruce (Picea sitchensis (Bong.) Carr.), and red alder (Alnus rubra Bong.). The figures and corresponding tables were produced by a computerized plotting system, GRAFLEX. ...
- Silvicultural treatments and end-product value.
http://www.for.gov.bc.ca/hre/pubs/pubs/0002.htm
pp. 130-167. In Second growth Douglas-fir: Its management and conversion for value. A report of the Douglas-fir Task Force, R.M. Kellogg. (editor). Forintek Canada Corp. Spec. Publ. No. SP-32, Vancouver, B.C. 173 p. ...
- Total and merchantable volume equations for small coastal Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0005.htm
Total and merchantable volume equations for small coastal Douglas-fir. ...
- Site-specific relationships of root growth potential to outplanting performance of coastal Douglas-fir (
http://www.for.gov.bc.ca/hre/pubs/pubs/0010.htm
Site-specific relationships of root growth potential to outplanting performance of coastal Douglas-fir (pseudotsuga menziesii [Mirb.] Franco) under controlled irrigated field conditions. ...
- Survival and growth of four Douglas-fir stock types 21 years after planting.
http://www.for.gov.bc.ca/hre/pubs/pubs/0017.htm
Survival and growth of four Douglas-fir stock types 21 years after planting. ...
- A growth intercept model for coastal Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0038.htm
A growth intercept model for coastal Douglas-fir. ...
- Comparison of Mcardle, DFSIM, and TASS growth and yield models.
http://www.for.gov.bc.ca/hre/pubs/pubs/0046.htm
pp. 350-359. In Proc. Symp. Douglas-fir: Stand management for the future, June 18-20, 1985, Seattle, Wash., C.D Oliver, D.P. Hanley, and J.A. Johnson (Editors). Inst. For. Res., Univ. Wash., Contrib. No. 55, Seattle, Wash. ...
- Managed stand yield tables for coastal Douglas-fir: initial density and precommercial thinning.
http://www.for.gov.bc.ca/hre/pubs/pubs/0049.htm
Managed stand yield tables for coastal Douglas-fir: initial density and precommercial thinning. ...
- Managed stand yield tables for coastal Douglas-fir: initial density and precommercial thinning - supplementary operational yield tables (July 1985).
http://www.for.gov.bc.ca/hre/pubs/pubs/0050.htm
Managed stand yield tables for coastal Douglas-fir: initial density and precommercial thinning - supplementary operational yield tables (July 1985). ...
- Modelling the growth of Douglas-fir in France.
http://www.for.gov.bc.ca/hre/pubs/pubs/0051.htm
Modelling the growth of Douglas-fir in France. ...
- Impact of precommercial thinning on the yield of coastal Douglas-fir- TASS Predictions.
http://www.for.gov.bc.ca/hre/pubs/pubs/0052.htm
Impact of precommercial thinning on the yield of coastal Douglas-fir- TASS Predictions. ...
- Impact of planting density and juvenile spacing on the yield of Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0055.htm
Impact of planting density and juvenile spacing on the yield of Douglas-fir. ...
- Dynamics and simulated yield of Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0058.htm
Dynamics and simulated yield of Douglas-fir. ...
- Distribution of area increment over the bole of fertilized Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0060.htm
Distribution of area increment over the bole of fertilized Douglas-fir. ...
- Growth prediction in managed Douglas-fir stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/0063.htm
Growth prediction in managed Douglas-fir stands. ...
- Description and growth simulation of Douglas-fir stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/0064.htm
Description and growth simulation of Douglas-fir stands. ...
- Response of a 50-year-old Douglas-fir stand to urea fertilization.
http://www.for.gov.bc.ca/hre/pubs/pubs/0065.htm
Response of a 50-year-old Douglas-fir stand to urea fertilization. ...
- Recommended site index curves for immature coastal Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0066.htm
Recommended site index curves for immature coastal Douglas-fir. ...
- Growth prediction in managed Douglas-fir stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/0067.htm
Growth prediction in managed Douglas-fir stands. ...
- Height growth losses due to animal feeding in Douglas-fir plantations, Vancouver Island, B.C.
http://www.for.gov.bc.ca/hre/pubs/pubs/0070.htm
Height growth losses due to animal feeding in Douglas-fir plantations, Vancouver Island, B.C. ...
- Site index adjustments for old-growth stands based on veteran trees.
http://www.for.gov.bc.ca/hre/pubs/pubs/0079.htm
Regional studies are supporting foresters' perceptions that the site indices of British Columbia's old-growth stands are being underestimated. A province-wide paired-plot study resulted in old-growth site index adjustments for coastal Douglas-fir (pseudotsuga menziesii (Mirb.) Franco var. menziesii), interior spruce (Picea glauca (Moench.) Voss, P. engelmannii (Parry) Engelm., and P. glauca x P. engelmannii), and interior lodgepole pine (Pinus contorta var. latifolia Dougl.). The objective of this study is to develop adjustments for species not covered in the provincial project. Adjustments for the species in the provincial project are also derived for comparison purposes. The data for this study come from temporary and permanent sample plots with a veteran and a main stand component. The site indices for the two components were estimated and an adjustment equation for each species was derived using the two site indices in a linear regression analysis. The veteran compone ...
- Growth intercept models and tables for British Columbia - coastal species.
http://www.for.gov.bc.ca/hre/pubs/pubs/0082.htm
This field guide insert presents the growth intercept models and tables available for use in coastal regions of British Columbia. Included are growth intercept models and tables for: Western Hemlock, Sitka Spruce, and Douglas-fir. The Options section notes any options and alternative models or model formulations, and provides references that are available from the above address. The tables are designed for rough estimation of site index in the field. The formulation or the appropriate publication should be consulted for accurate site index determination. The arbitrary range of site index in the tables is 10-50 m. The tables are in a common format for consistency among species and do not necessarily represent the range of site indices found in the model development data. Site index is based on top height and a reference age of 50 years (breast height) for all species. Estimates of growth intercept and site index that are beyond the range of the data used in the analyses (given in the Notes section for each ...
- Growth intercept models and tables for British Columbia - interior species.
http://www.for.gov.bc.ca/hre/pubs/pubs/0083.htm
This field guide insert presents the growth intercept models and tables available for use in the interior of British Columbia. Included are growth intercept models and tables for: Lodgepole Pine, Interior Spruce, Douglas-fir, Western Hemlock, Subalpine Fir, Western Redcedar, and Western Larch. The Options section notes any options and alternative models or model formulations, and provides references that are available from the above address. The tables are designed for rough estimation of site index in the field. The formulation or the appropriate publication should be consulted for accurate site index determination. The arbitrary range of site index in the tables is 5-40 m. The tables are in a common format for consistency among species and do not necessarily represent the range of site indices found in the model development data. Site index is based on top height and a reference age of 50 years (breast height) for all species. Estimates of growth intercept and site index that are beyond the range of the ...
- Interior Douglas-fir growth intercept models.
http://www.for.gov.bc.ca/hre/pubs/pubs/0085.htm
Interior Douglas-fir growth intercept models. ...
- Site index conversion equations for mixed species stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/0101.htm
Models are developed to predict the site index of one species in a mixed stand from the site index of a cohort. These models are applicable to site quality evaluation, growth and yield modelling, and timber management planning. A single-equation compatible site index conversion system is developed using the geometric mean regression (GMR) line for the following species mixes: coastal Douglas-fir/western hemlock; interior Douglas-fir/lodgepole pine, Douglas-fir/white spruce, Douglas-fir/western hemlock, Douglas-fir/western larch, white spruce/lodgepole pine, white spruce/subalpine fir, lodgepole pine/subalpine fir, and lodgepole pine/western larch. ...
- Effectiveness of tree mats, hexazinone, and glyphosate for establishing Douglas-fir on a grassy site.
http://www.for.gov.bc.ca/hre/pubs/pubs/0119.htm
Effectiveness of tree mats, hexazinone, and glyphosate for establishing Douglas-fir on a grassy site. ...
- Effectiveness of plastic mulch and herbicide treatments for establishing Douglas-fir on a grassy site.
http://www.for.gov.bc.ca/hre/pubs/pubs/0121.htm
Effectiveness of plastic mulch and herbicide treatments for establishing Douglas-fir on a grassy site. ...
- Effectiveness of plastic mulch and herbicide treatments for establishing Douglas-fir on a grassy site.
http://www.for.gov.bc.ca/hre/pubs/pubs/0128.htm
Effectiveness of plastic mulch and herbicide treatments for establishing Douglas-fir on a grassy site. ...
- Effectiveness of tree mats, hexazinone, and glyphosate for establishing Douglas-fir on a grassy site.
http://www.for.gov.bc.ca/hre/pubs/pubs/0132.htm
Effectiveness of tree mats, hexazinone, and glyphosate for establishing Douglas-fir on a grassy site. ...
- Effectiveness of tree mats, hexazinone, and glyphosate for establishing Douglas-fir on a grassy site.
http://www.for.gov.bc.ca/hre/pubs/pubs/0133.htm
Effectiveness of tree mats, hexazinone, and glyphosate for establishing Douglas-fir on a grassy site. ...
- Effectiveness of plastic mulch and herbicide treatments for establishing Douglas-fir on a grassy site.
http://www.for.gov.bc.ca/hre/pubs/pubs/0134.htm
Effectiveness of plastic mulch and herbicide treatments for establishing Douglas-fir on a grassy site. ...
- Effects of red alder on stand dynamics and nitrogen availability (FRBC Project HQ96400-RE MOF EP1121.01).
http://www.for.gov.bc.ca/hre/pubs/pubs/0161.htm
This extension note provides a summary of results obtained to date from studies initiated in 1992 to document and demonstrate the effects of different amounts and spatial arrangements of red alder on forest productivity, stand dynamics, and nitrogen availability in broadleaf-conifer mixedwood stands in coastal British Columbia. Replacement series experiments have been planted at two locations in B.C. to evaluate the effects of various proportions of red alder when grown in mixture with Douglas-fir. Mixedwood plantations have also been established at three locations following an additive design. In the additive design, Douglas-fir and western redcedar were planted at a density of 1100 tph (with the two species planted in equal proportions at alternating planting spots), and one of eight "broadleaf" density treatments was subsequently applied to randomly selected plots. These treatments included: 0, 50, 100, 200 and 400 red alder per hectare, 50 bigleaf maple per hectare, 200 Sitka alder per hectare, and a d ...
- Long-term carbon dioxide and water vapor flux measurements above a Pacific Northwest Douglas-fir forest.
http://www.for.gov.bc.ca/hre/pubs/pubs/0181.htm
Long-term carbon dioxide and water vapor flux measurements above a Pacific Northwest Douglas-fir forest. ...
- Estimating Douglas-fir wood production from soil and climate data.
http://www.for.gov.bc.ca/hre/pubs/pubs/0212.htm
Estimating Douglas-fir wood production from soil and climate data. ...
- A comparison of mulch mat and herbicide treatments for reducing grass competition in the IDFww.
http://www.for.gov.bc.ca/hre/pubs/pubs/0220.htm
In the warm wet Interior Douglas-fir biogeoclimatic subzone (IDFww), mechanical and herbicide site preparation and brushing treatments have been used to establish planted conifers. These silviculture treatments have been prescribed to control grass and shrub competition which rapidly develops after harvesting. Many of these sites, especially those with a southern aspect, have experienced poor survival of planted Douglas-fir. Poor plantation establishment has been attributed to poor stock quality and severe grass and shrub competition for soil moisture. Innovative brushing methods are needed for the establishment of Douglas-fir on these dry sites. Herbicide and mulch mat treatments have been used with some success. Glyphosate herbicide has been widely applied in forestry as an effective vegetation control treatment. Hexazinone herbicide has also been used. Both herbicides have been shown to effectively control grass if applied while the grass is actively growing (Boyd et al. 1985; Fahlmann and Herring 1 ...
- Pollen contamination effects on progeny from an off-site Douglas-fir seed orchard.
http://www.for.gov.bc.ca/hre/pubs/pubs/0262.htm
Pollen contamination effects on progeny from an off-site Douglas-fir seed orchard. ...
- Application of hypervariable Douglas-fir cpDNA in paternity analysis.
http://www.for.gov.bc.ca/hre/pubs/pubs/0268.htm
Application of hypervariable Douglas-fir cpDNA in paternity analysis. ...
- Evaluating pollen competition in Douglas-fir using a chloroplast DNA marker.
http://www.for.gov.bc.ca/hre/pubs/pubs/0332.htm
Evaluating pollen competition in Douglas-fir using a chloroplast DNA marker. ...
- Stand structure and growth estimates for the Opax Mountain silvicultural systems trial.
http://www.for.gov.bc.ca/hre/pubs/pubs/0336.htm
In Managing the Dry Douglas-fir Forests of the Southern Interior: Workshop Proceedings. April 29-30, 1997, Kamloops, B.C. A. Vyse, C. Hollstedt, and D. Huggard (editors). B.C. Min. For., Res. Br., Victoria, B.C. ...
- Uneven-aged Interior Douglas-fir stand dynamics at Pothole Creek.
http://www.for.gov.bc.ca/hre/pubs/pubs/0337.htm
Uneven-aged Interior Douglas-fir stand dynamics at Pothole Creek. ...
- Application of a chloroplast DNA marker in seed orchard management evaluations of Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0338.htm
Application of a chloroplast DNA marker in seed orchard management evaluations of Douglas-fir. ...
- Early selection of coastal Douglas-fir in a farm-field test environment.
http://www.for.gov.bc.ca/hre/pubs/pubs/0350.htm
Early selection of coastal Douglas-fir in a farm-field test environment. ...
- Early genetic gains verified in realized-gain trials of coastal Douglas-fir and western hemlock.
http://www.for.gov.bc.ca/hre/pubs/pubs/0352.htm
Early genetic gains verified in realized-gain trials of coastal Douglas-fir and western hemlock. ...
- Chloroplast DNA diversity of Douglas-fir in British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/0356.htm
Chloroplast DNA diversity of Douglas-fir in British Columbia. ...
- Shoot-tip respiration of first-year interior and coastal Douglas-fir seedlings during bud development.
http://www.for.gov.bc.ca/hre/pubs/pubs/0368.htm
Shoot-tip respiration of first-year interior and coastal Douglas-fir seedlings during bud development. ...
- Juvenile - mature wood transition.
http://www.for.gov.bc.ca/hre/pubs/pubs/0378.htm
In Second growth Douglas-fir: Its management and conversion for value, R.M. Kellogg (editor). Forintek Canada Corp., Spec. Publ. No. SP-32, Vancouver, B.C. pp. 23-38. ...
- A comparative study of shoot and root development of interior and coastal Douglas-fir seedlings.
http://www.for.gov.bc.ca/hre/pubs/pubs/0383.htm
A comparative study of shoot and root development of interior and coastal Douglas-fir seedlings. ...
- Juvenile - mature wood transition in second-growth coastal Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0387.htm
Juvenile - mature wood transition in second-growth coastal Douglas-fir. ...
- Anatomical and respiratory changes in shoot tips of interior and coastal Douglas-fir (
http://www.for.gov.bc.ca/hre/pubs/pubs/0388.htm
Anatomical and respiratory changes in shoot tips of interior and coastal Douglas-fir (pseudotsuga menziesii (Mirb.) Franco) seedlings during bud development. ...
- Dose-response models for stand thinning with the "Ezject" herbicide injection system.
http://www.for.gov.bc.ca/hre/pubs/pubs/0429.htm
This report analyzes mortality data collected to test the effectiveness of the "Ezject'' herbicide lance developed by B. Dillistone. The lance injects a used .22 cartridge containing 0.22-0.24 g of the herbicide glyphosate into a tree. This method is fairly safe for the person applying the treatment and for the environment, since the herbicide is contained. The lance can also treat a large number of trees quickly. Five trials were established in 1980 for western hemlock, Douglas-fir, and lodgepole pine. Initial dose-response models have been developed for western hemlock and Douglas-fir. Models could not be fit for lodgepole pine, however, because not enough large trees were treated and the treatments were confounded with other factors. It is clear that the "Ezject'' lance injector system is effective for killing trees. Increasing the number of capsules or placing them around the tree increased the size of tree which could be killed. Seasonal effects were small in the long run. It is recommended th ...
- Interior spruce, Douglas-fir, and western larch fertilizer screening trials in the British Columbia interior.
http://www.for.gov.bc.ca/hre/pubs/pubs/0501.htm
Interior spruce, Douglas-fir, and western larch fertilizer screening trials in the British Columbia interior. ...
- Nursery growing density and containe volume affect nursery and field growth of Douglas-fir and lodgepole pine seedlings.
http://www.for.gov.bc.ca/hre/pubs/pubs/0534.htm
Nursery growing density and containe volume affect nursery and field growth of Douglas-fir and lodgepole pine seedlings. ...
- Frost hardiness, root growth capactiy, and field performance relationships in interior spruce, lodgepole pine, Douglas-fir and western hemlock seedlings.
http://www.for.gov.bc.ca/hre/pubs/pubs/0541.htm
Frost hardiness, root growth capactiy, and field performance relationships in interior spruce, lodgepole pine, Douglas-fir and western hemlock seedlings. ...
- Long-nights and moisture stress affect Douglas-fir seedling growth, cold hardiness, dormancy and root growth potential.
http://www.for.gov.bc.ca/hre/pubs/pubs/0543.htm
Long-nights and moisture stress affect Douglas-fir seedling growth, cold hardiness, dormancy and root growth potential. ...
- Auxin stimulates lateral root formation of container-grown interior Douglas-fir seedlings.
http://www.for.gov.bc.ca/hre/pubs/pubs/0549.htm
Auxin stimulates lateral root formation of container-grown interior Douglas-fir seedlings. ...
- Development of height-age and site-index functions for even-aged interior Douglas-fir in British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/0559.htm
Development of height-age and site-index functions for even-aged interior Douglas-fir in British Columbia. ...
- Estimating dominant height and site index of even-aged Interior Douglas-fir in British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/0560.htm
Estimating dominant height and site index of even-aged Interior Douglas-fir in British Columbia. ...
- Prognosis, SPS and TASS yield comparisons for even-aged interior Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0567.htm
Prognosis, SPS and TASS yield comparisons for even-aged interior Douglas-fir. ...
- Effect of fertilization on growth characteristics of coastal Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0572.htm
Effect of fertilization on growth characteristics of coastal Douglas-fir. ...
- Calibration of tree and stand simulator to natural and fertilized stands of Douglas-fir on international paper company land in Western Washington and Oregon.
http://www.for.gov.bc.ca/hre/pubs/pubs/0575.htm
Calibration of tree and stand simulator to natural and fertilized stands of Douglas-fir on international paper company land in Western Washington and Oregon. ...
- The effects of density on the growth and development of repressed lodgepole pine and suppressed inland Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0577.htm
The effects of density on the growth and development of repressed lodgepole pine and suppressed inland Douglas-fir. ...
- Status of interior Douglas-fir growth and yield information in BC and yield prediction problems.
http://www.for.gov.bc.ca/hre/pubs/pubs/0611.htm
Status of interior Douglas-fir growth and yield information in BC and yield prediction problems. ...
- Coarse woody debris decomposition documented over 65 years on southern Vancouver Island.
http://www.for.gov.bc.ca/hre/pubs/pubs/0666.htm
In 1929-1930, Stig Schenström and J.D. Curtis established an experiment to study thinning dynamics of Douglas-fir (pseudotsuga menziesii (Mirb.) Franco) on southern Vancouver Island, British Columbia. As a subcomponent of the experiment, the coarse woody debris (CWD) from the previous stand were mapped and the decay condition classified on five permanent plots. These scaled drawings and classifications were updated in 1945-1947 and 1995-1996. This unique 65-year period of CWD observation confirms that observations of CWD volume loss on Vancouver Island are similar to elsewhere in the Pacific Northwest. The simple exponential decay rate constant was 0.022/year based on volume of primarily Douglas-fir on the five plots. The decay rate constant by large-end diameter was 0.067/year for logs 80 cm. ...
- General and specific combining ability from disconnected partial diallels of coastal douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/0702.htm
General and specific combining ability from disconnected partial diallels of coastal douglas-fir. ...
- Spatial patterns of tree height variations in a series of Douglas-fir progeny trials: Implications for genetic testing.
http://www.for.gov.bc.ca/hre/pubs/pubs/0709.htm
Spatial patterns of tree height variations in a series of Douglas-fir progeny trials: Implications for genetic testing. ...
- Time trends of predicted breeding values in selected crosses of coastal douglas-fir in British Columbia: A methodological study.
http://www.for.gov.bc.ca/hre/pubs/pubs/0718.htm
Time trends of predicted breeding values in selected crosses of coastal douglas-fir in British Columbia: A methodological study. ...
- Genetic improvement of Douglas-fir/western larch in Interior British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/0814.htm
Genetic improvement of Douglas-fir/western larch in Interior British Columbia. ...
- Geographic variation in ten-year height growth of Interior Douglas-fir in British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/0818.htm
Geographic variation in ten-year height growth of Interior Douglas-fir in British Columbia. ...
- Stem volume and wood relative density of a non-local Douglas-fir provenance in British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/0828.htm
Stem volume and wood relative density of a non-local Douglas-fir provenance in British Columbia. ...
- Adaptive variation in Douglas-fir, Sitka spruce and true fir: a summary of provenance research in coastal British Columbia (abstract).
http://www.for.gov.bc.ca/hre/pubs/pubs/0837.htm
Adaptive variation in Douglas-fir, Sitka spruce and true fir: a summary of provenance research in coastal British Columbia (abstract). ...
- Ectomycorrhizae of Douglas-fir pre-inoculated with Rhizopogon vinicolor and outplanted on eastern Vancouver Island.
http://www.for.gov.bc.ca/hre/pubs/pubs/0935.htm
Ectomycorrhizae of Douglas-fir pre-inoculated with Rhizopogon vinicolor and outplanted on eastern Vancouver Island. ...
- Ectomycorrhizae of Douglas-fir and western hemlock seedlings outplanted on eastern Vancouver Island.
http://www.for.gov.bc.ca/hre/pubs/pubs/0937.htm
Ectomycorrhizae of Douglas-fir and western hemlock seedlings outplanted on eastern Vancouver Island. ...
- Diameter growth equations for douglas-fir and grand fir in the western Willamette Valley of Oregon.
http://www.for.gov.bc.ca/hre/pubs/pubs/0999.htm
Diameter growth equations for douglas-fir and grand fir in the western Willamette Valley of Oregon. ...
- Water use of interior Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/1008.htm
Water use of interior Douglas-fir. ...
- Ultraviolet-B radiation effects on some British Columbia conifers 2) Sitka spruce and coastal Douglas-fir from three elevations.
http://www.for.gov.bc.ca/hre/pubs/pubs/1062.htm
Ultraviolet-B radiation effects on some British Columbia conifers 2) Sitka spruce and coastal Douglas-fir from three elevations. ...
- Preliminary assessment of selected communities of soil organisms under different conifer species.
http://www.for.gov.bc.ca/hre/pubs/pubs/1086.htm
This study used the second-growth plantations of Douglas-fir, western hemlock, Sitka spruce, and western redcedar of the Ministry of Forests Experimental Project 571 (species-espacement trial established in 1965-1966 on southern Vancouver Island) to take a preliminary look at the effects of different conifer species on collembolan, oribatid mite, and macrofungal species. For all three groups of soil organisms, overall frequency or abundance and diversity were noticeably less under western redcedar compared with the other conifer species. Using similarity indices, we found that the macrofungus communities (species and abundance) differed under the various conifers. The community of forest floor oribatid mites under Douglas-fir was distinct, but we could not detect differences between the other conifer species. We could not detect differences in forest floor collembolan communities between any of the conifers. ...
- Ecological description and classification of some Pine Mushroom (Tricholoma magnivelare) habitat in British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/1087.htm
agment content. Forest floors tended to be relatively thin, and wildfire was the most common natural disturbance regime. The most consistent tree species was western hemlock (Tsuga heterophylla), with lodgepole pine (Pinus contorta var. latifolia) and Douglas-fir (pseudotsuga menziesii var. glauca) sometimes present. Shrub and herb species tended to have relatively low cover values, while moss cover was highly variable, ranging from 7 to 97%. In general, the soil, vegetation, and forest stand results indicate that submesic site series correlate well with pine mushroom habitat. This consistency in habitat across forest subzones should allow forest managers to better recognize and consider potential commercial mushroom ground in development plans. ...
- 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. ...
- Thinning and Pruning Coastal Douglas-fir near Chilliwack, B.C.: 8-year Results.
http://www.for.gov.bc.ca/hre/pubs/pubs/1111.htm
Thinning and Pruning Coastal Douglas-fir near Chilliwack, B.C.: 8-year Results. ...
- Interannual and seasonal variability of latent and sensible heat fluxes above a coastal Douglas-fir forest.
http://www.for.gov.bc.ca/hre/pubs/pubs/1120.htm
Interannual and seasonal variability of latent and sensible heat fluxes above a coastal Douglas-fir forest. ...
- Thinning and fertilizing effects in root diseases of Douglas-fir in coastal British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/1137.htm
Thinning and fertilizing effects in root diseases of Douglas-fir in coastal British Columbia. ...
- Western redcedar site index models for the interior of British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/1140.htm
Models are developed to predict top height, site index, and years to breast height for western redcedar (Thuja plicata Donn) on interior sites. Stem analysis and ecological data were collected from 46 plots in the Interior Cedar-Hemlock and Interior Douglas-fir biogeoclimatic zones. Four site trees were stem analyzed from each 0.04-ha plot. These data were converted into top height–breast height age, growth intercept, years to breast height, and site index data. A site index, growth intercept, and years to breast height model were then fit to the data. When faced with a choice of models, a graph of the models' relative accuracy assists in selecting the appropriate model. ...
- Splicing Height Curves.
http://www.for.gov.bc.ca/hre/pubs/pubs/1180.htm
A previous method for splicing juvenile height models with height-age models does not give satisfactory results for coastal Douglas-fir because the two curves have different shapes and are far apart at the splice point. Our new procedure forces the juvenile height curve to be the same as the height-age curve at the pre-determined splice point, and pseudo-data are used to make a smooth transition between the two curves. ...
- Net Basal Area Response 9 Years after Fertilizing Thinned and Unthinned Douglas-fir.
http://www.for.gov.bc.ca/hre/pubs/pubs/1183.htm
Net Basal Area Response 9 Years after Fertilizing Thinned and Unthinned Douglas-fir. ...
- Development of height-age models for estimating juvenile height of coastal Douglas-fir in British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/1241.htm
Development of height-age models for estimating juvenile height of coastal Douglas-fir in British Columbia. ...
- Root biomass distribution under three cover types in a patchy
http://www.for.gov.bc.ca/hre/pubs/pubs/1280.htm
We investigated the relationship between cover type and root biomass distribution and allocation to different root size classes in a naturally regenerated, dry, Rocky Mountain Douglas-fir (pseudotsuga menziesii var. glauca) forest in the southern interior of British Columbia, Canada. The site was selectively harvested 32 years previously; residual stems were 30 cm and 130-170 years old at breast height at the time of study. A total of nine pits (each measuring 1.0m x 1.0m) were excavated to a depth of 1.0 m under three different cover types: mature timber, grassy (Calamagrostis rubescens) openings (canopy gaps), and regeneration clumps. Total (all diameters) live root biomass ranged from 4.7 kg/m2 under the mature timber to 1.9 kg/m2 under both regeneration clumps and grassy openings. Thin root (0.1 cm 2). We suggest that the similarity of thin root biomass across the three cover types is indic ...
- Natural regeneration 10 years after partial cutting in a dry-belt interior Douglas-fir stand.
http://www.for.gov.bc.ca/hre/pubs/pubs/1281.htm
Natural regeneration 10 years after partial cutting in a dry-belt interior Douglas-fir stand. ...
- High levels of chloroplast genetic variation differentiate coastal and interior Douglas-fir (
http://www.for.gov.bc.ca/hre/pubs/pubs/1287.htm
High levels of chloroplast genetic variation differentiate coastal and interior Douglas-fir (Pseudotsuga mensziesii) lineages in southern British Columbia. ...
- Development of variable retention (VRAF) for coastal Douglas-fir, western hemlock, lodgepole pine, and white spruce.
http://www.for.gov.bc.ca/hre/pubs/pubs/1298.htm
Development of variable retention (VRAF) for coastal Douglas-fir, western hemlock, lodgepole pine, and white spruce. ...
- Water availability, climate change and the growth of Douglas-fir in the Georgia Basin.
http://www.for.gov.bc.ca/hre/pubs/pubs/1303.htm
Water availability, climate change and the growth of Douglas-fir in the Georgia Basin. ...
- Annual and seasonal variability of sensible and latent heat fluxes above a coastal Douglas-fir forest, British Columbia, Canada.
http://www.for.gov.bc.ca/hre/pubs/pubs/1305.htm
Annual and seasonal variability of sensible and latent heat fluxes above a coastal Douglas-fir forest, British Columbia, Canada. ...
- Potential pollen contamination effects on progeny from an off-side Douglas-fir seed orchard: 9-year field results.
http://www.for.gov.bc.ca/hre/pubs/pubs/1323.htm
Potential pollen contamination effects on progeny from an off-side Douglas-fir seed orchard: 9-year field results. ...
- Light absorption and bole volume growth of individual Douglas-fir trees.
http://www.for.gov.bc.ca/hre/pubs/pubs/1332.htm
Light absorption and bole volume growth of individual Douglas-fir trees. ...
- 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 ...
- Coarse woody debris: inventory, decay modelling, and management implications in three biogeoclimatic zones.
http://www.for.gov.bc.ca/hre/pubs/pubs/1342.htm
To assess recent management practices, post-harvest levels of coarse woody debris (CWD) were measured in the Southern Interior and Northern Interior forest regions of British Columbia. A simple input and decay model was used to estimate the volumes of CWD that might be present at the end of managed forest rotations. In four ecosystems (Sub-Boreal Spruce [SBS] mk1 variant, Interior Douglas-fir [IDF] dm2 variant, Interior Cedar–Hemlock [ICH] dw variant, and ICHvk2/wk3 variants) that were sampled a few years after harvest, between 58 and 80% of the CWD volume came from pieces less than 6 m in length. Modelling of CWD decay and net new CWD input from the developing stand indicated that by rotation end (after 90 years), CWD volumes would have decreased to about 15% (SBSmk1) and 1% (IDFdm2) of the CWD volumes found in mature unmanaged stands. In the ecosystems studied, this research suggests that specific management guidance for deadwood will be required to maintain CWD (outside of reserves) in managed stands. V ...
- Sensitivity and uncertainty of the carbon balance of a Pacific Northwest Douglas-fir forest during an El Niño/La Niña cycle.
http://www.for.gov.bc.ca/hre/pubs/pubs/1349.htm
Sensitivity and uncertainty of the carbon balance of a Pacific Northwest Douglas-fir forest during an El Niño/La Niña cycle. ...
- The climate and long-term water balance of Fluxnet Canada’s coastal Douglas-fir forest.
http://www.for.gov.bc.ca/hre/pubs/pubs/1351.htm
The climate and long-term water balance of Fluxnet Canada’s coastal Douglas-fir forest. ...
- A comparison of herbicide and mulch mat treatments for reducing grass, herb and shrub competition in the B.C. Interior Douglas-fir zone - Ten year results.
http://www.for.gov.bc.ca/hre/pubs/pubs/1364.htm
A comparison of herbicide and mulch mat treatments for reducing grass, herb and shrub competition in the B.C. Interior Douglas-fir zone - Ten year results. ...
- Effects of fertilization on the growth and foliar nutrition of immature Douglas-fir in the Interior Cedar-Hemlock zone of British Columbia: six-year results.
http://www.for.gov.bc.ca/hre/pubs/pubs/1382.htm
Effects of fertilization on the growth and foliar nutrition of immature Douglas-fir in the Interior Cedar-Hemlock zone of British Columbia: six-year results. ...
- Garry Oak (
http://www.for.gov.bc.ca/hre/pubs/pubs/1421.htm
This field guide covers the native plant communities with a component of Garry oak (Quercus garryana) in British Columbia. It is a guide to identification of these communities, which can be applied to the woodlands, savannah, meadow, and rock outcrops within and near the zone of influence of oak canopy. The guide does not cover very specific occurrences, such as vernal pools, or the broader set of associated ecosystems that help form the Garry oak landscape. In the background work (Erickson 1996, 1998, 2002b) on which this guide is based, Garry oak ecosystems were interpreted as a climax conditioned by a natural disturbance regime. This would occur within a smaller geographic scale than that addressed by the provincial biogeoclimatic ecosystem classification (BEC). In the BEC context they are placed as seral in comparison to climax Douglas-fir forest on circum-mesic sites, and could possibly be considered as a disclimax. This guide does not focus on management, which is addressed only via rankings a ...
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