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Thursday, July 23, 2020 | History

1 edition of Revised growth intercept models for coastal western hemlock, Sitka spruce, and interior spruce. found in the catalog.

Revised growth intercept models for coastal western hemlock, Sitka spruce, and interior spruce.

Revised growth intercept models for coastal western hemlock, Sitka spruce, and interior spruce.

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Published by British Columbia Ministry of Forests Research Program in [Victoria, B.C.] .
Written in English

    Subjects:
  • Western hemlock -- British Columbia -- Growth.,
  • Sitka spruce -- British Columbia -- Growth.,
  • Spruce -- British Columbia -- Growth.,
  • Site index (Forestry) -- British Columbia.,
  • Forests and forestry -- Research -- British Columbia.

  • Edition Notes

    SeriesExtension note -- 37, Extension note (British Columbia. Ministry of Forests. Research Branch) -- 37.
    ContributionsBritish Columbia. Ministry of Forests. Research Branch.
    Classifications
    LC ClassificationsSD397.W45 R48 1999
    The Physical Object
    Pagination8 p. :
    ID Numbers
    Open LibraryOL20116020M

    Seeding survival and to year growth of coastal Douglas-fir, Sitka spruce, western hemlock, and western red cedar plantations at X m, X m, and X m spacings were studied on the west coast of Vancouver Island. The genetic control and phenotypic and genotypic correlations among wood density, modulus of elasticity, height, diameter, and volume were assessed using trees representing 20 unrelated year-old coastal Douglas-fir full-sib families growing on four (spaced and pruned vs. control) comparable test sites. Generally, no significant differences were observed between treatments, indicating.

      A direct example is the use of western hemlock (Tsuga heterophylla) boughs and young trees from the forest for capturing herring spawn, and of hemlock poles from the dense shaded understory to make eelgrass twisting poles. Knots from hemlock and some other trees provide the tough wood used for bentwood fishhooks (Turner et al., ). The. Cryptic Paw Lichen, Nephroma occultum, is a rare lichen endemic to western North America. It is strongly associated with humid old-growth forests and is characterized by a yellowish, greenish, or bluish-grey upper surface with net-shaped ridges, and a hairless tan to sometimes blackish lower surface.

      The majority of the sites were in 40 - 60 year old second-growth forests. Canopy cover on the sites ranged between 2 - %, with a mean of 81%. The overstory was western hemlock, Douglas-fir, Sitka spruce, western redcedar and occasionally Pacific silver fir. Study sites were located in the moist cold subzone of the Interior Cedar-Hemlock biogeoclimatic zone (ICHmc). Forests of this region represent a transition between the interior Sub-Boreal Spruce zone to the east and the Coastal Western Hemlock zone to the west [16,17].


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Revised growth intercept models for coastal western hemlock, Sitka spruce, and interior spruce Download PDF EPUB FB2

Revised Growth Intercept Models for Coastal Western Hemlock, Sitka Spruce, and Interior Spruce: Author(s) or contact(s): G.D. Nigh Source: Research Branch Subject: Growth and Yield Series: Extension Note Other details: Published Hardcopy is available.

This study used the second-growth plantations of Douglas-fir, western hemlock, Sitka spruce, and western redcedar of the Ministry of Forests Experimental Project (species-espacement trial established in on southern Vancouver Island) to take a preliminary look at the effects of different conifer species on collembolan, oribatid.

coastal western hemlock (a), Sitka spruce (b), and interior spruce (c). Discussion and Conclusion The revised growth intercept models for Sitka spruce are slightly more pre-cise than the original models, although the revised models for western hem-lock and interior spruce are slightly less precise.

The reduction in preci-sion for hemlock is due. 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. A height-growth and site-index model for interior spruce in the Sub-Boreal Sitka spruce biogeoclimatic zone of British Columbia Revised growth intercept models for coastal.

western hemlock, Sitka. 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.

Revised Growth Intercept Models for Coastal Western Hemlock, Sitka Spruce, and Interior Spruce. Revised growth intercept models for coastal western hemlock, Sitka spruce, and interior spruce J M5 Site index conversion equations for mixed western hemlock-amabilis fir stands.

de Montigny, L. and G. Nigh. Growth, mortality, and damage in fast growing Douglas-fir stands in coastal British Columbia twenty years after heavy juvenile thinning and moderate pruning at age nine. A height-growth and site-index model for interior spruce in the Sub-Boreal Spruce biogeoclimatic zone of British Columbia.

Zhengjun Hu, a Oscar García a. a University of Northern British Columbia, University Way, Prince George, BC V2N 4Z9, Canada. Today Sitka spruce occupies the hypermaritime to maritime outer coastal zone on Vancouver Island where annual precipitation is high and summers are typically cool and moist.

Sitka spruce is salt-spray tolerant, a factor which favours it over western hemlock and western red cedar along the shoreline. We used stem analysis data collected from 62 plantations (>40 years of age) of pure black spruce across northern Ontario to develop height growth, SI, and variable growth intercept models.

Growth-intercept esti- redcedar, amabilis fir, western hemlock and Sitka spruce trees, identified all epiphytes, and examined effects of stand age, region, tree species, site nutrient status.

Neskowin Crest Research Natural Area in the Cascade Head Experimental Forest is located along the central coast of Oregon, USA, in the Picea sitchensis–Tsuga heterophylla (Sitka spruce–western hemlock) zone of Franklin and Dyrness ().The prevailing climate is cool and wet with annual precipitation of mm, falling mostly between late fall and spring.

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A review by Cameron and Mason highlighted the considerable potential of Sitka spruce/western hemlock (Tsuga heterophylla (Raf.) Sarg.) mixtures. Western hemlock is found throughout the natural range of Sitka spruce where they can form dense mixed stands and achieve relatively high growth rates.

One of the main features of western hemlock is. CWH Coastal Western Hemlock Western hemlock, limitations on the growth of Sitka spruce plantations in Great. Britain. the simple forest growth model 3-PG delivers practical outputs, which. Snag longevity of Douglas-fir, western hemlock, and western redcedar from permanent sample plots in coastal British Columbia Article (PDF Available) in Forest Ecology and Management (3) The purpose of this research was to quantify what value could be gained from cutting solid wood products from old-growth western hemlock (Tsuga heterophylla (Raf.) Sarg.) logs that are used to produce pulp in British Columbia.

These logs represent a significant portion of the resource and increasing their value recovery would be beneficial to the forest industry.

One hundred and sixteen logs. At time of treatment, western hemlock and Sitka spruce were the dominant tree species. Site index at 50 years for western hemlock is ca. 35 m, and for Sitka spruce is ca.

39 m. Bait was clearcut in the early s, and likely burned prior to being planted with Douglas-fir. Substantial amounts of western hemlock has established naturally. Western spruce budworm larvae feed on foliage and immature cones; in Montana in Rocky Mountain Douglas fir- pinegrass habitats, cone production was consistently much higher in lightly defoliated (%) trees than heavily defoliated (>%) trees.

The Little Ice Age (LIA), ca. CE –, was a cold period of global extent, with the nature and timing of reduced temperatures varying by region. The Gulf of Alaska (GOA) is a key location to study the climatic drivers of glacier fluctuations during the LIA because dendrochronological techniques can provide precise ages of ice advances and retreats.

The highest LAI occurred at Zone 1, the coastal site of western hemlock and sitka spruce, and in Zone 4, in the midelevation west Cascades (Fig. 3). The lowest LAI was obtained in stands dominated by ponderosa pine and western juniper, in the east slope of the Cascades and in the interior high desert, respectively.The number of culturally modified tree (CMT) sites in the hillsides above the channel provides evidence of the use of red cedar for the collection of bark, boards, planks, and kindling, Sitka spruce for cambium and pitch collection, and western hemlock for cambium collection (Stryd et al.WhiteMcLaren and Christensen ).