Keyword: regeneration
- Identifying and modelling the spatial distribution dynamics of regenerating lodgepole pine.
http://www.for.gov.bc.ca/hre/pubs/pubs/0086.htm
This study investigated the changes in the spatial distribution of lodgepole pine (Pinus contorta var. latifolia Dougl.) stands as regeneration proceeds. Twenty-nine plots were established in regenerating lodgepole pine stands and were remeasured two years later. Nine of these plots had enough ingrowth to warrant an analysis of their spatial distribution dynamics. Ripley's K(t) statistic was used to identify the spatial pattern of the trees at the initial measurement, the ingrowth trees, and the combined initial and ingrowth trees. The initial trees were mainly aggregated, but some plots had random or regularly distributed trees. The ingrowth trees were all aggregated, and the initial and ingrowth trees, when analyzed together, were aggregated or random. The bivariate K(t) statistic was also used to detect correlation between the locations of the initial trees and the ingrowth trees. Two of the nine plots showed correlation between the ingrowth and the initial trees; the initial and ingrowth tree lo ...
- Field studies of seed biology.
http://www.for.gov.bc.ca/hre/pubs/pubs/0184.htm
Except in limited areas where there is enough advance regeneration, establishment of forest cover on harvested lands continues to depend on seedling planting programs or on natural regeneration by seeds. Whereas successful plantation programs depend primarily on plant competition and site variables at the time of planting, successful natural regeneration depends not only on the availability of seeds, but on favourable environmental conditions throughout the processes of seed production, dispersal, germination, and seedling establishment. Site preparation and other silvicultural treatments can improve the suitability of the seedbed and its micro-environment, but there is still much we do not understand about how various factors contribute to successful forest establishment. We have gained some insights, under controlled conditions, about the influence of major factors such as light and temperature, but we have limited experience with biological responses under actual conditions in the field. Anyone ...
- Effect of climate variability on forest regeneration and productivity.
http://www.for.gov.bc.ca/hre/pubs/pubs/0205.htm
Effect of climate variability on forest regeneration and productivity. ...
- A comparison of manual brushing treatments in the ICHdw at Redfish Creek: 10-year results from blocks 10-13.
http://www.for.gov.bc.ca/hre/pubs/pubs/0223.htm
nd spring ungulate habitat, and can be important as a source of domestic water. As a result of these resource uses and public pressure, herbicides are rarely used for controlling competition to tree regeneration. The Redfish Creek Manual Brushing study was established in 1987 by Roger Whitehead of the Canadian Forest Service. The primary objectives of this research trial were to examine the cost effectiveness and productivity of motorized manual brushing treatments (Holmsen and Whitehead 1988) and to compare conifer and vegetation response to multiple motor-manual brushing treatments. This extension note summarizes the 1997 remeasurement of conifer and vegetation response data collected from blocks 10-13 (Figure 1). These blocks are adjacent to each other and provide a field demonstration of a range of brushing treatments. The objectives of the 1997 remeasurement were to compare brushing treatment vegetation, stocking, and conifer response 10 years after trial establishment. A more detailed report ...
- In vitro plant regeneration via callus culture of mature Salix exigua.
http://www.for.gov.bc.ca/hre/pubs/pubs/0382.htm
In vitro plant regeneration via callus culture of mature Salix exigua. ...
- Natural lodgepole pine in west-central Alberta. Part II: Juvenile spacing.
http://www.for.gov.bc.ca/hre/pubs/pubs/0616.htm
In Lodgepole pine - regeneration and management. Symp. Proc. M. Murray (editor). USDA For. Serv., Gen. Tech. Rep. PNW-157, Portland, Oreg,. pp. 8-14. ...
- The ingress of lodgepole pine and white spruce regeneration following logging and scarification in west-central Alberta.
http://www.for.gov.bc.ca/hre/pubs/pubs/0626.htm
The ingress of lodgepole pine and white spruce regeneration following logging and scarification in west-central Alberta. ...
- 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. ...
- Yellow-cedar stecklings: Nursery production and field performance.
http://www.for.gov.bc.ca/hre/pubs/pubs/1274.htm
Stecklings, or plantable rooted cuttings, are the primary propagule type used for artificial regeneration of yellow cedar (Chamaecyparis nootkatensis (D. Don) Spach.) in British Columbia. An increase in logging of this species resulted in a greater demand for planting stock which, due to infrequent cone crops, and seed which usually has poor germination success, cannot be met by seedling production. From 1975 to 1986, over 50% of all yellow-cedar stock planted in British Columbia were stecklings. This report synthesizes 15 years worth of research results and operational experiences concerning nursery production and field performance of yellow-cedar stecklings. ...
- 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. ...
- 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 ...
- Implementing a PrognosisBC regeneration sub-model for complex stands of southeastern and central British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/1373.htm
Implementing a PrognosisBC regeneration sub-model for complex stands of southeastern and central British Columbia. ...
- Implementing a PrognosisBC regeneration submodel for the complex stands of southeastern and central BC.
http://www.for.gov.bc.ca/hre/pubs/pubs/1375.htm
Implementing a PrognosisBC regeneration submodel for the complex stands of southeastern and central BC. ...
- Development of regeneration imputation models for the ICHmw2 in the vicinity of Nelson.
http://www.for.gov.bc.ca/hre/pubs/pubs/1380.htm
Development of regeneration imputation models for the ICHmw2 in the vicinity of Nelson. ...
- Development of natural regeneration and juvenile height growth models for complex stands of Southeastern and Central British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/1381.htm
Development of natural regeneration and juvenile height growth models for complex stands of Southeastern and Central British Columbia. ...
- An Early History of the Research Branch, British Columbia Ministry of Forests and Range.
http://www.for.gov.bc.ca/hre/pubs/pubs/1413.htm
The B.C. Forest Branch (now Service) was created in February 1912 but research activities didn't begin until 1921 when James (Alex) Alexander studied timber utilization, logging slash disposal, natural regeneration, tree growth and yield, and fire protection. In 1923 Assistant Chief Forester Robert St. Clair recommended the establishment of forest experimental stations in the major forest types of the province, resulting in the Aleza Lake Experiment Station near Prince George (in 1924) and the Cowichan Lake Research Station on Vancouver Island (in 1929). The Research Division was formally established in 1927 with a staff of seven and annual expenditures of $34 000. The director was Percy Barr. By 1930 the Research Division of the B.C. Forest Branch was the largest and most active forest research organization in Canada. In the ensuing decades the research program went through many changes and evolved into a province-wide multi-disciplinary organization. Based on archival material and interviews ...
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