Keyword: sitka spruce
- 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. ...
- A Sitka spruce height-age model with improved extrapolation properties.
http://www.for.gov.bc.ca/hre/pubs/pubs/0080.htm
A Sitka spruce height-age model with improved extrapolation properties. ...
- 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 ...
- Interim validation of the western hemlock growth intercept model.
http://www.for.gov.bc.ca/hre/pubs/pubs/0092.htm
Growth intercept models estimate site index (a measure of site productivity) from average tree height growth measured immediately above breast height. These models have been developed for four species: coastal western hemlock (Tsuga heterophylla (Raf.) Sarg.) (Nigh 1996a) and Sitka spruce (Picea sitchensis (Bong.) Carr.) (Nigh 1996b); interior lodgepole pine (Pinus contorta Dougl.) (Nigh 1995a) and spruce (P. glauca (Moench) Voss, P. engelmannii Parry, and P. glauca x engelmannii) (Nigh 1995b). Growth intercept models are expected to be developed for all commercial species in British Columbia. It is important that these models be validated (tested). Growth intercept models are empirical; hence they strongly reflect the behaviour of the model development data. Therefore, testing them with independent data (that is, data that were not used to develop the model) is important because the model development data may be atypical (Picard and Cook 1984). If a model vali ...
- A variable growth intercept model for Sitka spruce.
http://www.for.gov.bc.ca/hre/pubs/pubs/0093.htm
A variable growth intercept model for Sitka spruce. ...
- Site index conversion equations for mixed Sitka spruce / western hemlock stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/0099.htm
Site index conversion equations for mixed Sitka spruce / western hemlock stands. ...
- Effects of Thinning and Fertilizing Mixed Western Hemlock-Sitka Spruce Stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/0313.htm
Effects of Thinning and Fertilizing Mixed Western Hemlock-Sitka Spruce Stands. ...
- The Influence of Initial Espacement on the Growth of a 27-year-old Sitka Spruce Plantation.
http://www.for.gov.bc.ca/hre/pubs/pubs/0330.htm
The Influence of Initial Espacement on the Growth of a 27-year-old Sitka Spruce Plantation. ...
- Effects of sites, provenance, and provenance and site interaction in Sitka spruce in Coastal British Columbia.
http://www.for.gov.bc.ca/hre/pubs/pubs/0821.htm
Effects of sites, provenance, and provenance and site interaction in Sitka spruce in Coastal British Columbia. ...
- Variation in attack by Sitka spruce weevil (
http://www.for.gov.bc.ca/hre/pubs/pubs/0826.htm
Variation in attack by Sitka spruce weevil (Pissodes strobi (Peck)), within a resistant provenance of Sitka spruce. ...
- 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
Provenance variation in weevil attack in Sitka spruce. ...
- Genetic resistance to the white pine weevil in Sitka spruce.
http://www.for.gov.bc.ca/hre/pubs/pubs/0833.htm
Genetic resistance to the white pine weevil in Sitka spruce. ...
- Selection and clonal screening of Sitka spruce trees resistant to the white pine weevil.
http://www.for.gov.bc.ca/hre/pubs/pubs/0834.htm
Selection and clonal screening of Sitka spruce trees resistant to the white pine weevil. ...
- Variation in resistance to the white pine weevil in natural populations of Sitka spruce.
http://www.for.gov.bc.ca/hre/pubs/pubs/0835.htm
Variation in resistance to the white pine weevil in natural populations of Sitka spruce. ...
- 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). ...
- 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. ...
- Revised Growth Intercept Models for Coastal Western Hemlock, Sitka Spruce, and Interior Spruce
http://www.for.gov.bc.ca/hre/pubs/pubs/1217.htm
Revised Growth Intercept Models for Coastal Western Hemlock, Sitka Spruce, and Interior Spruce ...
- Effects of Thinning and Fertilizing Mixed Western Hemlock-Sitka Spruce Stands.
http://www.for.gov.bc.ca/hre/pubs/pubs/1225.htm
Effects of Thinning and Fertilizing Mixed Western Hemlock-Sitka Spruce Stands. ...
- Geographic variation in resin canal defenses in seedlings from the Sitka spruce x white spruce introgression zone.
http://www.for.gov.bc.ca/hre/pubs/pubs/1405.htm
Geographic variation in resin canal defenses in seedlings from the Sitka spruce x white spruce introgression zone. ...
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