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Biomass And Production Of Understory Vegetation In Seral Sitka Spruce Western Hemlock Forests Of Southeast Alaska
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Book Synopsis Biomass and Production of Understory Vegetation in Seral Sitka Spruce-western Hemlock Forests of Southeast Alaska by : Paul B. Alaback
Download or read book Biomass and Production of Understory Vegetation in Seral Sitka Spruce-western Hemlock Forests of Southeast Alaska written by Paul B. Alaback and published by . This book was released on 1981 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several understory conununities display successional stages during the first two hundred years following logging or fire disturbance in the coastal Picea-Tsua forests of southeast Alaska. Residual shrubs and tree seedlings increase their growth exponentially after overstory removal. Understory biomass peaks at about 5000 kghayr fifteen to twenty-five years after logging. Vascular plant understories are virtually eliminated (0-70 kgha^-1yr^-1) after forest canopies close at stand ages of twenty-five to thirty-five years. Bryophytes and ferns dominate understory biomass during the following century. A vascular understory of deciduous shrubs and herbs is reestablished after 140 to 160 years. Subsequent to this successional stage vascular understory biomass continues to increase, while bryophyte biotnass and tree productivity decline. Departures from this developmental sequence are related to unusual conditions of stand establishment, soil, microclimate, or disturbance. During the earliest phases of ecosystem development following forest canopy closure, the decline in understory development is associated with increases in tree basal area and higher percent tree canopy cover, In the oldgrowth forests increases in mean stand diameter, age, and biomass are correlated with increases in understory biomass, The pattern of understory development over the chronosequence is hypothesized as responding primarily to changes in the light environment wrought by developments in forest canopy structure. The development and duration of the depauperate understory stage that follows canopy closure in southeast Alaska was hypothesized as being related to the canopy characteristics of shade tolerant, high-leaf-area Tsuga forests. Maintenance of these forests in the aggradation stages of development (0-100 years) by forest management activites would minimize vascular understory vegetation development. Even including the pulse of vegetation growth during the first 30 years, understory vegetation productivity on normal soils would be less over a 100-year forest tree rotation than the annual productivity in old-growth forests. Food for herbivores and nutrient cycling processes associated with understory vegetation would be concomitantly minimized under this forest management policy.
Book Synopsis Plant Succession Following Logging in the Sitka Spruce-western Hemlock Forests of Southeast Alaska by : Paul B. Alaback
Download or read book Plant Succession Following Logging in the Sitka Spruce-western Hemlock Forests of Southeast Alaska written by Paul B. Alaback and published by . This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics of understory biomass in sitka spruce-western hemlock forests of southeast Alaska by : Paul B. Alaback
Download or read book Dynamics of understory biomass in sitka spruce-western hemlock forests of southeast Alaska written by Paul B. Alaback and published by . This book was released on 1982 with total page 1948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis General Technical Report PNW-GTR by :
Download or read book General Technical Report PNW-GTR written by and published by . This book was released on 1987 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Response of Understory Vegetation to Thinning in the Sitka Spruce-western Hemlock Forests of Southeastern Alaska by : Paul B. Alaback
Download or read book Response of Understory Vegetation to Thinning in the Sitka Spruce-western Hemlock Forests of Southeastern Alaska written by Paul B. Alaback and published by . This book was released on 1984 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IPASS written by Douglas Olson and published by . This book was released on 1984 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimating Tree Biomass Regressions and Their Error by :
Download or read book Estimating Tree Biomass Regressions and Their Error written by and published by . This book was released on 1987 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a workshop co-sponsored by the USDA Forest Service, the State University of New York, and the Society of American Foresters. Presented were papers on the methodology of sample tree selection, tree biomass measurement, construction of biomass tables and estimation of their error, and combining the error of biomass tables with that of the sample plots or points. Also presented were papers on various aspects of biomass research currently being conducted in the United States, Canada, and abroad.
Download or read book Beyond 2001 written by and published by . This book was released on 2002 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Forest Ecosystem of Southeast Alaska by : A. S. Harris
Download or read book The Forest Ecosystem of Southeast Alaska written by A. S. Harris and published by . This book was released on 1974 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large-scale use of the timber resource of southeast Alaska began in 1953 after long efforts to establish a timber industry. Development and present status of the industry and present management of the timber resource are summarized, stressing the biological basis for timber management activities in southeast Alaska today. Ecological and silvicultural considerations related to timber harvest, reforestation, and stand development are discussed. Published and unpublished information are brought together. Current management practices are discussed as a basis for a better understanding of how this information can be helpful in managing the timber resource and to point out where research is needed.
Book Synopsis Identification of Physical Habitats Limiting the Production of Coho Salmon in Western Oregon and Washington by : Gordon H. Reeves
Download or read book Identification of Physical Habitats Limiting the Production of Coho Salmon in Western Oregon and Washington written by Gordon H. Reeves and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wildlife Habitats in Managed Rangelands by : Chris Maser
Download or read book Wildlife Habitats in Managed Rangelands written by Chris Maser and published by . This book was released on 1983 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Relationships Between Sitka Black-tailed Deer and Their Habitat by : Thomas A. Hanley
Download or read book Relationships Between Sitka Black-tailed Deer and Their Habitat written by Thomas A. Hanley and published by . This book was released on 1984 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Pacific Northwest Forest and Range Experiment Station (Portland, Or.) Publisher : ISBN 13 : Total Pages :120 pages Book Rating :4.0/5 ( download)
Book Synopsis The Forest Ecosystem of Southeast Alaska: Forest ecology and timber management, by A. S. Harris and W. A. Farr by : Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Download or read book The Forest Ecosystem of Southeast Alaska: Forest ecology and timber management, by A. S. Harris and W. A. Farr written by Pacific Northwest Forest and Range Experiment Station (Portland, Or.) and published by . This book was released on 1974 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Managing Young Upland Forests in Southeast Alaska for Wood Products, Wildlife, Aquatic Resources and Fishes by : Mark Steven Wipfli
Download or read book Managing Young Upland Forests in Southeast Alaska for Wood Products, Wildlife, Aquatic Resources and Fishes written by Mark Steven Wipfli and published by . This book was released on 2002 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis User's Guide to the Weather Model by : William Paul Kemp
Download or read book User's Guide to the Weather Model written by William Paul Kemp and published by . This book was released on 1989 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska by : Wilbur A. Farr
Download or read book Estimation of decay in old-growth western hemlock and Sitka spruce in southeast Alaska written by Wilbur A. Farr and published by . This book was released on 1976 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Responses of Southeast Alaska Understory Species to Variation in Light and Simulated Herbivory by : Thomas A. Hanley
Download or read book Responses of Southeast Alaska Understory Species to Variation in Light and Simulated Herbivory written by Thomas A. Hanley and published by . This book was released on 2014 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: