Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 73 for “"silviculture"”.
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Turning up the heat: fire ecology and climate adaptive silviculture in longleaf pine forests
… managers are considering climate-adaptive silviculture approaches that focus on improving ecosystem resistance or resilience and even transition for novel conditions. Experimental treatments based on these three approaches were applied in longleaf forests of southwest Georgia, where …
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The impact of group selection silviculture on timber harvesting cost in the southern Appalachians
… to uneven-aged management and group selection silviculture. Group selection, with its small 1/2-to-2-acre patch cuts widely dispersed throughout a timber stand, has the potential to substantially increase timber harvesting costs over traditional clearcutting. This could exacerbate the …
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Adaptive Silviculture in an urban floodplain forest: exploring functional traits and soil responses for climate ready forests
… To address these challenges, the Adaptive Silviculture for Climate Change (ASCC) network has established silvicultural trials in the floodplain forest at Crosby Farm Regional Park (CFRP) to explore adaptive management strategies that will provide insight into integrating climate change …
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The Influence of Selection Silviculture Biomass Harvesting on Soil Carbon, Nutrients, and Respiration in a Northern Mixed-Deciduous Forest
Concerns have been raised about soil fertility following increased recovery of biomass in northern mixed deciduous forests. Several studies suggest that biomass extraction and enhanced decomposer activity can lead to losses of soil C and nutrients, increased nitrification, and reduced soil CO2 …
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Economic Comparisons Between an Even-Aged and an Uneven-Aged Loblolly Pine Silvicultural System
… are taken from published literature of even-aged silviculture. Even-aged and uneven-aged silvicultural regimes are simulated starting from, 1) bare land, 2) a balanced uneven-aged loblolly pine stand, and 3) a mature even-aged loblolly pine stand. For the three starting conditions and selected …
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Management intensity effects on growth and physiological responses of loblolly pine varieties and families growing in the Virginia Piedmont and North Carolina Coastal Plain of the United States
… season after establishment. At NC, intensive silviculture increased crown-width, height and dbh by 33%, 14%, and 23%, respectively. At VA, intensive silviculture increased crown-width, height and dbh by 41%, 10%, and 23%, respectively. Intensive silviculture also increased slightly but …
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Potential Silvicultural Effects on Bald Eagle Nesting Substrate and Economic Yields at a Navy Installation in the Chesapeake Bay: An Approach Using the Forest Vegetation Simulator and Mahalanobis Distance
… compliance requirements, and budget reductions. Silviculture offers promise for ecosystem management while providing financial means through the sale of forest products. This study used forest inventory and bald eagle nest site data to investigate the potential effects of silviculture on bald …
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Geografia histórica ambiental: uma geografia das matas brasileiras
… from the object of our study, that is,Brazilian silviculture and the preservation and planting of trees in the Brazilian territory. We have concluded that the replacement of woods with extensive monocultures of trees is due to the necessary capital expansion and accumulation, and that …
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Empirische Untersuchung von Durchforstungsbeständen im Bergwald und deren ökonomische Bewertung zur Prioritätsmodellierung, als Bestandteil forstlicher Managementstrategien
… under the heavy circumstances of the mountain silviculture with consideration of the intervened strength, the improvement for the stabilisations of the stocks and the increase of the mixture of arboreals as well as the time of the intervention from the practical perspective be ideally edited in …
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Effect of season of harvest and site quality on hardwood regeneration on the Virginia Piedmont
… maple and sourwood. In stands under even-aged silviculture, season of harvest can be used as an effective management tool to favor different species compositions. If oak or other hardwood production is the management objective a dormant season harvest will result in increased sprout vigor of …
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A comparison of crown attributes for six genotypes on Pinus taeda as affected by site and management intensity
… were divided between high and low intensity silviculture. The sub-sub plots were divided among the six genotypes of loblolly pine. Seventeen tree and crown characteristics were measured, and means were compared using analysis of variance and Tukey's HSD test. We hypothesized that the branch …
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Between Swamp and Sea: Agroforestry as Wetland Restoration in Southeast Virginia
… approach to enact long-term transformation where silviculture is the strategy to make the transition operational. Through speculative design, this thesis reframes salt-impacted agricultural landscapes not as zones of loss, but as emergent ecologies capable of provoking novel possibilities in the …
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Site quality factors affecting Acer saccharum, Quercus rubra and Quercus alba abundance and height growth rates in young even-aged stands located in central Missouri
… little information to guide them with selecting silviculture treatments for managing this increasingly important species. I examined the effects that soil water, soil nutrients, and landscape position have upon the abundance and height growth rates of sugar maple, white oak, and northern red oak …
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Effects of Timber Harvesting on Terrestrial Salamander Abundance and Behavior
… for visibility and behavior-induced bias among silviculture treatments and estimated the proportion of a salamander population that is active on the surface in harvested and control habitats. Instantaneous rates of salamander activity ranged from 1.3 to 11.7% of the population for redback …
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MODELING APPROACHES FOR CLIMATE MITIGATION IN ALPINE FORESTS.
… preservation and the relevance of preventive silviculture. The third paper applies sustainability indicators within the DPSIR framework and ecological modeling to evaluate scenarios inspired by SSP narratives, linking environmental, social and economic dimensions. Results show that …
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The Effects of Nutrient Concentrations on Macroinvertebrate Distributions in Georgia
… in streams as a result of industry, agriculture, silviculture, and urbanization. In large amounts, nutrients can cause many problems to occur in the stream ecosystem. Macroinvertebrates have been established as good indicators for determining the level of impairment of a stream; however, not much …
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The influence of silvicultural manipulations on plethodontid salamanders
… In this research, I examine how experimental silviculture impacts plethodontid salamander relative abundance and count, and I compare three different body condition indices. Chapter 1 focuses on plethodontid salamander relative abundance 30 years after experimental treatments (including …
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Lateral development in roots and shoots of Pinus radiata seedlings
… much is known about its shoot growth and silviculture and rooting of cuttings, only a limited amount of work has been concerned with root growth and development.
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Evaluating social welfare implications of forestry policies when economic and environmental values matter in a British Columbia context
… function. The policies include subsidized silviculture, imposed rotation times and compensation for the forest stand’s environmental outputs. The social welfare generated from each policy is compared to determine the best policy for a BC forest stand. Heterogeneity is modeled through …
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AVIAN COMMUNITIES MONITORED ALONG A SUCCESSIONAL CHRONOSEQUENCE IN BOTTOMLAND HARDWOOD FORESTS IN THE LOWER MISSISSIPPI ALLUVIAL VALLEY
… eight forest classes based on age and time since silviculture treatment. Additionally, single-species occupancy models were developed for these four species of concern: northern parula (<em>Setophaga americana</em>), prothonotary warbler (<em>Protonotaria citrea</em>), wood thrush (<em>Hylocichla …
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