The Influence of Cattle Grazing and Grass Seeding on Coniferous Regeneration After Shelterwood Cutting in Eastern Oregon (Classic Reprint) PDF Download
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Author: Kenneth W. Seidel
Publisher: Forgotten Books
ISBN: 9780365705413
Category : Business & Economics
Languages : en
Pages : 46
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Book Description
Excerpt from The Influence of Cattle Grazing and Grass Seeding on Coniferous Regeneration After Shelterwood Cutting in Eastern Oregon Figure 1 - General view of shelterwood plots after the seed cut in 1974: (a) 33 square-foot density, (b) 87 square-foot density, (c) 137 - square foot density. 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.
Author: Kenneth W. Seidel
Publisher: Forgotten Books
ISBN: 9780365705413
Category : Business & Economics
Languages : en
Pages : 46
Get Book Here
Book Description
Excerpt from The Influence of Cattle Grazing and Grass Seeding on Coniferous Regeneration After Shelterwood Cutting in Eastern Oregon Figure 1 - General view of shelterwood plots after the seed cut in 1974: (a) 33 square-foot density, (b) 87 square-foot density, (c) 137 - square foot density. 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.
Author: Kenneth W. Seidel
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 40
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Book Description
Author: K. W. Seidel
Publisher: Ecosystems Research Alliance
ISBN: 9780899046426
Category :
Languages : en
Pages : 40
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Book Description
Author: K. W. Seidel
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Kenneth W. Seidel
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 40
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Book Description
Author: Kenneth W. Seidel
Publisher: Forgotten Books
ISBN: 9781396047114
Category : Business & Economics
Languages : en
Pages : 46
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Book Description
Excerpt from Regeneration in Mixed Conifer Shelterwood Cuttings in the Cascade Range of Eastern Oregon: September 1979 Greater stocking was generally associated with increasing density of the overstory and more exposed mineral soil. Other factors, such as aspect, slope, elevation, and understory vegetation, had a posi tive or negative effect on stock ing, depending on the species and community. Equations for pre dicting stocking were derived for several species in both communi ties, but, because of the large amount of unexplained variation. 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.
Author: Mabel Alejandro-Castro
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 256
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Book Description
The ability of controlled livestock grazing, in combination with seeding of palatable forages, to reduce understory competition and enhance conifer establishment, was evaluated during 1985 and 1986, on two adjacent sites in southwestern Oregon. In 1984, Site 1 was clearcut and broadcast burned to remove slash, and Site 2 was machine scarified, ripped to ameliorate compacted soil layers, piled and burned. Both sites were planted in the spring of 1985 with Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and ponderosa pine (Pinus ponderosa Dougl.) and the following treatments applied during both years: silviculture-control, native vegetation-grazed, seeded vegetation-ungrazed, and seeded-grazed. Fifteen permanently marked 3.6m circular plots were located within each treatment replication, giving a total of 1950 trees from which growth and survival of conifers, and browsing and trampling by livestock and wildlife were monitored. Douglas-fir seedlings were also assessed for predawn and midday xylem potentials at each sampling date. Gravimetric soil moisture content and understory vegetation cover were also assessed on Site 1 and Site 2. Interpretation of conifer survival and growth response was complicated by severe frost damage and heavy browsing by elk during the first year. Analysis of variance determined Douglas-fir survival and growth was not significantly different between treatments both years. However, a binomial response model describing predicted mortality of Douglas-fir indicated differences in survival were present. Mortality as predicted by the model was a result of the factors of frost, wildlife browsing, and livestock browsing and trampling, rather than treatment applications. Frost damage had the greatest impact on Douglas-fir mortality, both because it affected a large percentage of the trees on the site (43.6 percent overall), and because it dramatically increased seedling mortality. Elk, though impacting an equally large percentage of trees (23.1-57.7 percent), appeared to selectively browse the healthiest trees, or those not affected by frost damage. This resulted in much lower predicted mortalities. Although livestock browsing and trampling increased mortality of Douglas-fir seedlings, livestock activities were much less prevalent than wildlife browsing or frost. Each year, the controlled grazing program maintained livestock browsing at 2.6 percent, and trampling at 6.0 percent. In 1985, early season, intense grazing by cattle did not result in treatment differences for Douglas-fir xylem potential. In 1986, the general trend was for seedlings growing in the seeded-grazed and silviculture-control treatments to have similar and less negative xylem potentials than trees growing in the seeded-ungrazed and native-grazed treatments. In 1986, gravimetric soil moisture content differed between treatments only during the June sampling date, when soil moisture content was significantly higher in the silviculture-control treatment. Total herbaceous and total shrub cover did not differ between treatments either year. The generally low xylem potential levels for seedlings in the seeded-ungrazed treatment, suggests seeding with similar forages and with the exclusion of livestock grazing in this area may result in increased water stress for Douglas-fir seedlings. Grazing improved the water relations of seedlings in comparison to ungrazed plots.
Author: Reg F. Newman
Publisher:
ISBN: 9780772680594
Category : Conifers
Languages : en
Pages : 16
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Book Description
Author: Kenneth W. Seidel
Publisher: Forgotten Books
ISBN: 9781396102257
Category : Business & Economics
Languages : en
Pages : 40
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Book Description
Excerpt from Regeneration in Mixed Conifer Clearcuts in the Cascade Range and the Blue Mountains of Eastern Oregon Success of regeneration on these clearcuts has been mixed, ranging from poor to good in various loca tions, but there has been no broad scale attempt to evaluate the regeneration or to relate it to environmental factors. Clearcuts in eastern Oregon mixed conifer forests are now old enough for regeneration to be established. Therefore, in 1976, I began a sur vey of regeneration on these clear cuts and a study of the factors affecting its establishment. This paper reports the results of the field survey conducted during 1976 and 1977 on the Deschutes, Winema, Umatilla, and wallowa-whitman National Forests. 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.
