Download or read book Oak Regeneration written by and published by . This book was released on 1993 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Oak Regeneration Problem written by Craig G. Lorimer and published by . This book was released on 1989 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Oak Regeneration Problem written by Craig G. Lorimer and published by . This book was released on 1989 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oak Regeneration Assessment written by F. Jordan Lang and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oak Regeneration written by David L. Loftis and published by . This book was released on 1993 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oak Regeneration written by David L. Loftis and published by Forgotten Books. This book was released on 2018-01-08 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Oak Regeneration: Serious Problems, Practical Recommendations; Symposium Proceedings, Knoxville, Tennessee, September 8-10, 1992 France designed to ensure oak establishment. Oak was an early export from the American colonies because it was scarce and expensive in England. Probably the first government sponsored forest research in the United States was attempts in Florida in the early 1800's to establish live oak (quercus virginiana) for shipbuilding. With the advent of technical forestry in this country there were references in early papers and textbooks to oak regeneration and the shelterwood method. This interest was primarily for academic study and followed European descriptions, but some of the earliest oak regeneration research related to concerns about areas without advance reproduction. In the late 1930's understory oaks were described in relation to past treatment. In the 1950's and 1960's researchers and ecologists began to quantify oak reproduction under various stand conditions on different sites. Mostly they found lots of understory oaks, but there were exceptions. Researchers thought these exceptions might be important and started to look more carefully at the response of oaks to harvest cutting. Even-aged cuttings quickly showed that on good oak sites without substantial numbers of vigorous advance oak the stands of the future would be quite different. The new stands generally contained less oak. At the same time observers noted that oak types were changing in some areas. More recently, comparisons of repeat forest surveys show a decline of oak types in some states. Increased prices for oak timber suggest that accelerated harvesting is adding to the ecological changes taking place. We find ourselves with a growing knowledge about oak ecology and silviculture but without a convincing history of being able to prescribe with certainty ways to increase the amount of oak in new stands. Considering the tremendous value of oak forests there is an urgency to improve oak management and to give high priority to long-term research. 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 Regenerating Rangeland Oaks in California written by Douglas D. McCreary and published by UCANR Publications. This book was released on 2001 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acorn weevils rodents and deer all contribute to oak regeneration difficulties in Pennsylvania written by David A. Marquis and published by . This book was released on 1976 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustaining Mixed oak Forests written by Joshua Rittenhouse and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The mixed-oak (Quercus spp.) regeneration and recruitment problem is complex and widespread; therefore research efforts must also be multifaceted and encompass large spatial scales if proper evaluations are to be made. This study contributes to mixed-oak forest sustainability by focusing on advance oak regeneration and mixed-oak composition in young forests. For this, data from 98 mixed-oak forests located in Pennsylvania state forests on oak species abundance and other biotic variables were collected before and after overstory removal, while abiotic data on stand characteristics comprising climate, topography, and soils were obtained from various sources. In Chapter 1, models of advance regeneration were developed at a regional scale to predict two types of advanced oak seedling abundance based on size: established oak seedlings (15.2 to 91.4 cm in height and a root collar diameter of 0.64 to 1.9 cm) and competitive oak seedlings (greater than 91.4 cm in height and a root collar diameter larger than 1.9 cm). The established oak seedlings model explained 44% of the total deviance, while the model for competitive oak seedlings only explained 18% of the total deviance. Deviance partitioning methods for the established oak seedlings model revealed that climatic factors individually explain the most deviance in the full model and suggest its relevance when modeling at larger spatial scales. Relationships between predictor variables and established oak seedlings may provide guidance for management that may choose different silvicultural practices in regions with different abiotic characteristics. In Chapter 2, the contribution of site characteristics and regeneration abundance before the overstory removal to the oak species abundance after 10 to 15 years of the overstory removal is evaluated. Models of mixed-oak basal area as a percent of total basal area (RBAOak) explained between 31.5% and 47.6 % of the variation, with a model considering only abundance of oak regeneration types (seedlings of different size and sprouting capacity) before overstory removal explaining the least (31.5 %), and a model considering site characteristics in addition to regeneration abundance before the overstory explaining almost half of the variation in RBAOak (47.6 %). Models considering only abundance of oak regeneration types highlighted the high relative contribution of large oak seedling abundance in comparison to oak seedlings of smaller stature and the expected oak stump sprouting capacity. Adding competition from other desirable seedlings before overstory removal improved explained variation stressing the role these seedlings have as competition for oaks before and after overstory removal. Site characteristics including factors representing moisture regime, climate, and deer browsing impacts were influential in determining RBAOak, having an additive role with regeneration characteristics before overstory removal. The models developed can help inform silvicultural decisions before overstory removal by providing projections of relative oak basal area in the young forest.
Download or read book Tree Shelters Show Promise for Oak Regeneration written by Edwin H. Manchester and published by . This book was released on 1988 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1996 National Technical Report on Forest Health written by Kenneth W. Stolte and published by . This book was released on 1997 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FS Series written by and published by . This book was released on 1966 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Restoration of Forested Ecosystems to Achieve Multiresource Benefits written by and published by . This book was released on 2008 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A primary mission of the U.S. Department of Agriculture Forest Service is multiple resource management, and one of the emerging themes is forest restoration. The National Silviculture Workshop, a biennial event co-sponsored by the Forest Service, was held May 7-10, 2007, in Ketchikan, Alaska, with the theme of "Integrated Restoration of Forested Ecosystems to Achieve Multiresource Benefits." This proceedings presents a compilation of state-of-the-art silvicultural research and forestry management papers that demonstrates integrated restoration to yield multiple resource benefits. These papers highlight national perspectives on ecosystem services, forest restoration and climate change, and regional perspectives on forest restoration and silvicultural practices to achieve multiple resource benefits from researchers and forest practitioners working in a broad array of forest types in the United States."
Download or read book General Technical Report PNW GTR written by and published by . This book was released on 1995 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Proceedings written by and published by . This book was released on 1995 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Biennial Southern Silvicultural Research Conference written by and published by . This book was released on 2006 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report Southern Research Station written by and published by . This book was released on 1995 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
