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Tuesday, August 18, 2020 | History

3 edition of Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska found in the catalog.

Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska

Wilbur A. Farr

Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska

by Wilbur A. Farr

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  • 9 Currently reading

Published by Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service in Portland, Or .
Written in English

    Subjects:
  • Western hemlock -- Alaska,
  • Sitka spruce -- Alaska,
  • Wood -- Deterioration

  • Edition Notes

    StatementWilbur A. Farr, Vernon J. LaBau and Thomas H. Laurent.
    SeriesResearch paper PNW -- 204., Research paper PNW -- 204.
    ContributionsLaBau, Vernon J., Laurent, Thomas H., Pacific Northwest Forest and Range Experiment Station (Portland, Or.), United States. Forest Service.
    The Physical Object
    Pagination[iv], 24 p. :
    Number of Pages24
    ID Numbers
    Open LibraryOL17815254M
    OCLC/WorldCa2589575

    Sitka spruce and western hemlock, however, several problems associated with determining site index are ap-parent. First, the height growth charac-teristics of Sitka spruce and western hemlock differ considerably (Allen , Cary , Taylor ). Barnes () noted that Sitka spruce contin-ues to grow much faster than doesFile Size: 2MB. In southeast Alaska the disease problem is somewhat simplified in that presently only four tree species are commercially important. volume these are western hemlock (Tsuga heterophyZZa (Raf.) Sarg.), 64 percent; Sitka spruce (Picea sitchensis (Bong.) brr.), 28 percent; western redcedar.

    (GMU) 2 in southern Southeast Alaska. Heceta Island is approximately km 2. in area, with km of coastline. The island is underlain with extensive karst limestone deposits and supports productive forest growth, dominated by Sitka spruce (Picea sitchensis) and western hemlock. Alaska, with a geographic range limited to Prince of Wales Island and smaller islands near its western shore (MacDonald and Cook ). The northern flying squirrel reputedly plays an essential role in the dynamics of coniferous forest ecosystems (Carey a) because it disperses ectomycor-rhizal fungi (Maser and Maser ) and because it is an.

      Estimation of decay in old-growth western hemlock and Sitka spruce in Southeast Alaska. USDA Forest Service Research Paper PNW Pacific Northwest Forest and Range Experiment Station. : Matthew Koehler. The temperate rain forests of Southeast Alaska are dominated by western hemlock and Sitka spruce, but Alaska yellow‑cedar, western redcedar, shore pine and mountain hemlock are also important components. Wind is the major agent of large‑scale disturbance in Southeast Alaska causing uprooting and bole breakage.


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Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska by Wilbur A. Farr Download PDF EPUB FB2

Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska. Portland, Or.: Pacific Northwest Forest and Range Experiment Station, U.S.

Dept. of. Tsuga heterophylla and Picea sitchensis were felled in sixty-seven 1/5-acre plots and tree volume and extent of internal decay were determined. Regression analysis was used to predict % decay in standing trees from external indicators, tree characteristics and environmental variables.

Decay % in both species was significantly correlated with position of external indicators, tree age and tree Cited by: Sitka spruce grows from sea level to treeline in Alaska, at elevations ranging from m (3, ft) in southeast Alaska to m (1, ft) in Prince William Sound.

High mountains of the coast ranges lie close to the sea, forming a barrier to moist, onshore winds and. Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska / Wilbur A. Farr, Vernon J. LaBau and Thomas H. : Wilbur A.

Farr. Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska. USDA Forest Service Research Paper, Pacific Northwest Forest and Range Experiment Station, No. PNW, 24 pp. + sum; 2 tab.; 25 ref. We studied six ha stands, two each of three types of forest: (1) old-growth, riparian floodplain forest, (2) old-growth, upland forest, and (3) year-old, red alder (Alnusrubra Bong.) riparian forest originating after clear-cut logging of floodplain spruce (Piceasitchensis (Bong.)Carrière) dominated the old-growth riparian stands and shared dominance with western hemlock Cited by: A comparison of old-growth forest structure in the western hemlock -Sitka spruce forests of southeast Alaska.

1rz Fish and Wildlife Relationships in Old-growth Forests: Proceedings of a Symposium. The amount of stem decay in live trees is correlated with tree age for both Sitka spruce and western hemlock in southeast Alaska (Figure 3) (Kimmey, ).

The high level of stem decay can be attributed to the abundance of old trees that grow in these forests which are not affected by fire and infrequently experience stand-replacing by: Figure Relationship of the occurrence of decay to age in western redcedar, western hemlock, and Sitka spruce trees containing measurable amounts of decay.

Kimmey () investigated decay in a total of 98 west-ern redcedar trees, western hemlock trees and Sitka spruce trees in southeast Alaska.

Numbers. The thin bark and poor decay resistance of western hemlock (Tsuga heterophylla) and Sitka spruce (Picea sitchensis) make them susceptible to logging damage and subsequent wound infection by decay fungi, greatly increasing the risk associated with partial Cited by: This stem decay fungi is found on live conifer trees in southeast Alaska such as Western hemlock, Mountain hemlock, White spruce, Lutz spruce and Sitka spruce.

The tree stem decay is caused by the fungus when it invades and colonizes the wood of living trees and decomposes the Class: Agaricomycetes. Understory vegetation undergoes successional stages during the 1st yr after logging or fire disturbance in the coastal Picea—Tsuga forests of southeast Alaska.

Residual shrubs and tree seedlings increase their growth within 5 yr after overstory removal. Understory biomass peaks at 5 Mg°ha — 1 °yr — 1 °15—25 yr after logging Cited by: The mean SDImax of the 40 hemlock-spruce stands in southeast Alaska was Individually, none of the stand or site factors examined accounted for >30% of the variability observed in SDImax when.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. In southeast Alaska, stand development after major disturbances such as clearcutting follows a clearly defined pattern; a new cohort of western hemlock and Sitka spruce develops from the establishment of new seedlings and the release of advance by: Canadian Journal of Botany,75(4):western hemlock stands in southeast Alaska.

Justin S. Crotteau, Annelise Z. Rue-Johns, Jeffrey C. Barnard The effects of partial cutting on forest plant communities of western hemlock Sitka spruce stands in southeast by: Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska - by Farr, Wilbur A.

cn; LaBau, Vernon J. cn; Laurent, Thomas H. cn; Pacific Northwest Forest and Range Experiment Station (Portland, Or.).

Inthe site at Cat Island (near Hollis on Prince of Wales Island) in southeast Alaska, was revisited. A total of 68 individual treated trees, including 45 western hemlock, 19 western redcedar, and 4 Sitka spruce, was located on six plots.

Average diameters at breast height in were, and inches for the tree. Sitka spruce, western hemlock, Alaska yellow cedar, western red cedar, blueberry, salmonberry, and mosses (Table 4). Our study identified wood and bark chips used as bedding in several dens with no other materials present.

This has not been previously reported in black bear dens. DYNAMICS OF UNDERSTORY BIOMASS IN SITKA SPRUCE-WESTERN HEMLOCK FORESTS OF SOUTHEAST ALASKA1,2 Paul B. Alaback Department of Forest Science, School of Forestry, Oregon State University, Corvallis, Oregon,USA Abstract.

Several understory communities display successional stages In old-growth forests, increases in understory bio3ass are File Size: 7MB. Tappeiner II, J.C., and Alaback, P.B. Early establishment and vegetative growth of understory species in the western hemlock—Sitka spruce forests of Southeast Alaska.

Can J For Res, 67, – Google ScholarCited by:   The Tongass National Forest (Tongass) is the largest national forest and largest area of old-growth forest in the United States. Spatial geographic information system data for the Tongass were combined with forest inventory data to estimate and map total carbon stock in the Tongass; the result was ± Pg C, or 8% of the total carbon in the forests of the conterminous USA and % of Cited by: SPRUCE-WESTERN HEMLOCK FORESTS OF SOUTHEAST ALASKA' PAUL B.

ALABACK Department of Forest Science, School of Forestry, Oregon State University, Corvallis, Oregon USA Abstract.

Understory vegetation undergoes successional stages during the 1st yr after logging or fire disturbance in the coastal Picea-Tsuga forests of southeast Alaska.