Predicting Post-Harvest Performance of Advance Red Oak Reproduction in the Southern Appalachians
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The second model permits silviculturists to predict, prior to harvest, the contribution to a new stand of an existing population of advance red oak reproduction.Abstract:
Models are presented for predicting: 1) height growth of red oak advance reproduction after clearcutting, and 2) the probability of stems becoming dominants or codominants in new stands as a function of preharvest size of advance reproduction and site quality. The second model permits silviculturists to predict, prior to harvest, the contribution to a new stand of an existing population of advance red oak reproductionread more
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Forest growth and yield modeling
TL;DR: In this paper, the authors present a model of a tree-list model with a set of static and dynamic equations. But they do not consider the effect of the number of trees in the model.
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Responses of hardwood advance regeneration to seasonal prescribed fires in oak-dominated shelterwood stands
TL;DR: Overall, prescribed fires improved oak advance regeneration with spring burning providing the most benefit, and this approach of following a shelterwood harvest with prescribed fire may be a viable method of regenerating oak-dominated stands on productive upland sites.
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Oak Regeneration: Serious Problems Practical Recommendations (Symposium Proceedings)
David L. Loftis,Charles E. McGee +1 more
Abstract: An Historical Perspective of Oak Regeneration F. Bryan Clark, USDA Foresf Service, Retired, Anmndale, VA 22003 Concerns about oak management in the middle ages led to forest ordinances in 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. INTRODUCTION Is oak regeneration really a problem? Experts believe that on many sites now occupied by oak, regeneration will become increasingly difficult. How can that be? Oaks are the most prevalent forest types in the United States and dominate much of the East’s landscape. Volume growth exceeds commercial removals. It is even more contusing to remember that the present stands were born out of very harsh efforts to either convert forest lands to agriculture through tire and grazing or to
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A Meta-Analysis of the Fire-Oak Hypothesis: Does Prescribed Burning Promote Oak Reproduction in Eastern North America?
TL;DR: This article performed a meta-analysis on the data from 32 prescribed fire studies conducted in mixed-oak forests to test whether they supported the fire-oak hypothesis and found that prescribed fire can contribute to sustaining oak forests in some situations.
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Sustaining oak forests in eastern North America: regeneration and recruitment, the pillars of sustainability.
TL;DR: In this article, the authors discuss the need to diversify the landscape and create a more balanced age structure that has the capacity to naturally regenerate mature trees, such as oak cover types.
References
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Applied Linear Statistical Models
TL;DR: Applied Linear Statistical Models 5e as discussed by the authors is the leading authoritative text and reference on statistical modeling, which includes brief introductory and review material, and then proceeds through regression and modeling for the first half, and through ANOVA and Experimental Design in the second half.
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Applied Linear Statistical Models
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Development of a Southern Appalachian Hardwood Stand After Clearcutting
Donald E. Beck,Ralph M. Hooper +1 more
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The Effect of Environmental Factors On the Abundance of Oak Regeneration Beneath Mature Oak Stands
Kenneth L. Carvell,E. H. Tryon +1 more
ReportDOI
Evaluating oak advance reproduction in the Missouri Ozarks.
TL;DR: In this article, a method for determining in advance of final harvest whether reproduction is adequate to reasonably ensure the regeneration of an oak stand in the Missouri Ozarks is presented, based on a tree regeneration model.