Download or read book The Physical Effect of Logging on Salmon Streams of Southern Alaska Classic Reprint written by G. A. James and published by Forgotten Books. This book was released on 2017-10-28 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Physical Effect of Logging on Salmon Streams of Southern Alaska The principal and most valuable industry of Alaska has been the salmon fisheries. Future development of Southeast Alaska, however, will depend on an increasing utilization of its important forest resource. The fisheries resource and the timber resource are intimately related. Reliable answers are therefore needed as to whether large-scale pulp timber logging is harmful to the spawning facilities of salmon streams. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book The Physical Effect of Logging on Salmon Streams of Southeast Alaska written by G. A. James and published by . This book was released on 1956 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gives results of first five-year period of research into the long-term effects of the forest industry on the water resources of the area. The study was limited to salmon streams on the Tongass National Forest.
Download or read book The Physical Effect of Logging on Salmon Streams written by George A. James and published by . This book was released on 1956 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physical Effect of Logging on Salmon Streams written by George A. James and published by . This book was released on 1956 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Logging on Twelve Salmon Streams in Southeast Alaska written by United States. Forest Service. Alaska Region and published by . This book was released on 1965 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Effects of Clearcutting on Salmon Habitat of Two Southeast Alaska Streams Classic Reprint written by W. R. Meehan and published by Forgotten Books. This book was released on 2018-09-09 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Some Effects of Clearcutting on Salmon Habitat of Two Southeast Alaska Streams Spawning by adult salmon, as well as egg and fry survival, may be influenced by timber harvest which may change the quantity, regimen, and quality of stream flow or impair adult migration by Obsta cles originating on logged watersheds. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Review of Research on Effects of Logging on Pink Salmon Streams in Alaska written by United States. Bureau of Commercial Fisheries and published by . This book was released on 1963 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alaskan Salmon Studies written by S. Philip Shapley and published by . This book was released on 1963 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alaska Salmon Studies written by S. Philip Shapley and published by . This book was released on 1964 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Effects of Clearcutting on Salmon Habitat of Two Southeast Alaska Streams written by and published by . This book was released on 1969 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Effects of Clearcutting on Salmon Habitat of Two Southeast Alaska Streams written by and published by . This book was released on 1969 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Effects of Clearcutting on Salmon Habitat of 2 Southeast Alaska Streams written by and published by . This book was released on 1969 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Logging on Discharge Temperature and Sedimentation of a Salmon Stream written by G. A. James and published by . This book was released on 1957 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Quantitative Geomorphic Approach to Predicting Productivity of Pink and Chum Salmon Streams in Southeast Alaska Classic Reprint written by Douglas N. Swanston and published by Forgotten Books. This book was released on 2018-09-07 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Quantitative Geomorphic Approach to Predicting Productivity of Pink and Chum Salmon Streams in Southeast Alaska Thompson and Hunt (1930) stressed the importance of the drainage basin as a whole, not just the stream, in their investigations of the basic nature of stream productivity. Slack (1955) reinforced this concept in his studies of stream productivity factors, demonstrating that the biolog ical productivity of a stream is directly related to the physical environment of the watershed, which controls drainage pattern, flow rates, gravel size and shape, channel gradient, and general stability characteristics. Statistical analysis of quantitative geomorphic parameters of individual watersheds can help identify these factors. Quantitative geomorphic techniques developed by Horton (1932, 1945) and Strahler (1952, 1953, 1954) provide a convenient method for obtaining numerical data on gross basin character istics, given limited funding and difficulty of access and sampling of test streams. Measurement of physical parame ters based on basin and channel geometry, obtainable from aerial photographs and topographic maps, provides correlation units such as drainage size and shape, stream density, and pattern, number, and length of tribu taries. These in turn provide an estimate of stage of water shed development, probable basin discharge, extent of bedrock control of drainage, impact of unstable slopes, and extent of channel suitable for spawning. Such techniques have been used successfully to analyze relationships between erosion, climate, surface properties, and geomorphology (melton 1957, Maxwell 1960, Dissmeyer In 1973, Ziemer used quantitative geomorphic techniques to relate drainage basin and channel configuration to changes in production of pink salmon on Montague Island Prince William Sound, Alaska, after large vertical tectonic adjustments resulting from the Good Friday Earthquake of 1964. Using five drainage system factors, he showed a correlation between drainage system geometry and freshwater production factors for pink salmon, with escapement as his indicator of production. He assumed that (1) the number of spawners using a stream is a sound measure of fish production in that stream, (2) escapement counts were consistently made from year to year and stream to stream, and (3) the impact of the fishery was consistent between stocks and years. He realized the problems involved by making these assumptions, but he had no other tools available. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Logging Residue in Southeast Alaska Classic Reprint written by James O. Howard and published by Forgotten Books. This book was released on 2017-11-18 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Logging Residue in Southeast Alaska Detailed information on logging residues in southeast Alaska is provided as input to economic and technical assessments of its use for products or site amenities. Two types of information are presented. Ratios are presented that can be used to gener ate an estimate, based on volume or acres harvested, of the cubic-foot volume of residue for any particular area of southeast Alaska. Separate ratios are given for live and dead or cull material, and for net and gross volume. Tables display per-acre residue volume by various characteristics that might affect either use or disposition. These tables show net or gross volume, or both, by diameter and length classes, by origin, by percentage of soundness, by degree of slopes and distance to roads, and by number of pieces of residue per acre. Keywords: Southeast Alaska, logging residue, slash, residue estimation, fuel wood, residue management. A large volume of woody biomass has traditionally remained on site after logging in southeast Alaska. Interest is growing in this material for energy and conventional products, as well as for its environmental attributes. A great deal of information is needed on the volume and characteristics of residue to adequately address these options. Existing sources were out of date and did not provide the information needed to make site-specific assessments for southeast Alaska. This study provides the capability to estimate the volume and characteristics of logging residue throughout southeast Alaska. This study had two objectives. The first was to develop ratios for use in estimating the volume of logging residue for any area in southeast Alaska. These ratios relate the quantity of residue to timber harvest volume or harvested acres. Study results show, for example. An average net volume of logging residue (wood only) of 79 to 109 cubic feet per thousand board feet of harvest and an average gross volume ranging from 125 to 158 cubic feet per thousand board feet of harvest. The second objective was to provide data characterizing logging residue in ways that might affect its utilization for various products or its management for environmental considerations. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book A History of the United States Forest Service in Alaska written by Lawrence Rakestraw and published by . This book was released on 2002 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The U S Forest Service written by Harold K. Steen and published by . This book was released on 2004 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Forest Service celebrates its centennial in 2005. With a new preface by the author, this edition of Harold K. Steen’s classic history (originally published in 1976) provides a broad perspective on the Service’s administrative and policy controversies and successes. Steen updates the book with discussions of a number of recent concerns, among them the spotted owl issue; wilderness and roadless areas; new research on habitat, biodiversity, and fire prevention; below-cost timber sales; and workplace diversity in a male-oriented field.
