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Articles 1 - 9 of 9
Full-Text Articles in Forest Sciences
Adaptation Of Soil Judging To Northeast China, He Yun
Adaptation Of Soil Judging To Northeast China, He Yun
All Theses
Soil Judging teaches students important skills for field identification of soil types, properties, and interpretations for use. The adaptation of Soil Judging in Northeast China can be beneficial to students as well as government agencies and the private sector. The objective of this study was to adapt Soil Judging to the Northeast region of China by a graduate student from China, who was trained using an undergraduate course in Soil Judging and a regional Soil Judging competition. Unlike the U.S., China has 14 soil orders, with six soil orders somewhat similar to the ones found in the Southeast region of …
Post-Hurricane Fuel Dynamics And Forest Regeneration Of Coastal Pine Stands In Southeast United States, Shanyue Guan
Post-Hurricane Fuel Dynamics And Forest Regeneration Of Coastal Pine Stands In Southeast United States, Shanyue Guan
All Theses
Hurricanes have long been powerful and recurring disturbances in many coastal forest ecosystems. Intense hurricanes often produce a large amount of dead fuels within their affected forests, but how post-hurricane fuel complex changes with time, due to decomposition and management such as salvage, and the fire behavior affected by the changed fuel load remains largely unknown. To better understand the fuel and regeneration dynamics, field measurement and modeling were conducted within undamaged stands and hurricane damaged stands, including salvaged and unsalvaged stands in southern pine forests impacted by hurricane Hugo (1989), Opal (1995), Katrina (2005), and Ike (2008). We found …
Growth Responses Of Genetically Improved Open Pollenated, Full-Sibling, And Clonal Loblolly Pine To The FlexstandTm Silvicultural System, Patrick Ma
All Theses
ABSTRACT Loblolly pine (Pinus taeda) is often listed as the most commercially important timber species in the southeastern United States and is subject to genetic improvement via breeding programs to increase sawtimber yield, stem quality, and disease resistance. ArborGen has trademarked the FlexStandTM Silvicultural System (a method of interplanting rows of genetically improved trees with less expensive biomass trees) as a more economical solution to growing Loblolly pine. Two studies were conducted to in order to assess the FlexStandTM Silvicultural System. The first study assessed seedling mortality and growth of four different genetic combinations were assessed in the …
Use Of Unmanned Aerial Vehicles (Uav) For Urban Tree Inventories, Brian Ritter
Use Of Unmanned Aerial Vehicles (Uav) For Urban Tree Inventories, Brian Ritter
All Theses
In contrast to standard aerial imagery, unmanned aerial systems (UAS) utilize recent technological advances to provide an affordable alternative for imagery acquisition. Increased value can be realized through clarity and detail providing higher resolution (2-5 cm) over traditional products. Many natural resource disciplines such as urban forestry will benefit from UAS. Tree inventories for risk assessment, biodiversity, planning, and design can be efficiently achieved with the UAS. Recent advances in photogrammetric processing have proved automated methods for three dimensional rendering of aerial imagery. Point clouds can be generated from images providing additional benefits. Association of spatial locational information within the …
Ecohydrological Function Of Lower Coastal Plain Bioretention Cells In South Carolina, Jessica Palazzolo
Ecohydrological Function Of Lower Coastal Plain Bioretention Cells In South Carolina, Jessica Palazzolo
All Theses
Flooding and stormwater control is a critical issue in coastal South Carolina because of shallow water table elevation, topography and rapid urbanization in the region. A best management practice (BMP) using low impact design (LID) principles known as a bioretention cell (BRC) is gaining popularity for stormwater management. Five BRCs in four landscape positions (well-drained uplands, tidal-proximal, poorly-drained-uplands, and floodplain) were instrumented for microclimate, soil moisture, and water table elevation for hydraulic efficiency and for water quality measurements. Three BRCs did not have an overflow outlets, one BRC (floodplain) employed an underdrain system, and one BRC (tidal proximal) had an …
Socioeconomic Indicators Of Family Forest Owner Use Of Federal Income Tax Provisions, John Hatcher
Socioeconomic Indicators Of Family Forest Owner Use Of Federal Income Tax Provisions, John Hatcher
All Dissertations
Family forest owners control a majority of the South's forest land and nearly half of its growing stock. These owners are a diverse group with widely varied objectives for ownership and management. Many family forest owners manage their holdings for timber production objectives and thus, are concerned with issues such as reforestation incentives and tax treatment of timber revenues. Their actual knowledge of the tax aspects of timber management varies, with some owners unaware of the federal income tax provisions that apply to timber. This study uses econometric techniques to establish socioeconomic predictors of family forest owner use of seven …
Water For Electricity In The Upper Savannah Basin: Impacts On Freshwater Mussels, Alan Johnson, Snehal Mhatre
Water For Electricity In The Upper Savannah Basin: Impacts On Freshwater Mussels, Alan Johnson, Snehal Mhatre
Graduate Research and Discovery Symposium (GRADS)
The water resources of the Upper Savannah River Basin are subjected to extensive water withdrawals for production of electricity for the region. The use of Savannah River Basin water resources for electricity production and the associated impact on reservoir levels, streamflows, and thermal regimes is in conflict with the requirements of in-stream biota particularly freshwater mussels. The Savannah River Basin contains atleast 26 unionid species, most of which are listed as endangered, threatened, or of special concern at the state level. Populations of these species have experienced significant declines and extirpations in the recent decades. Of these unionid species, brook …
Fire Resistance In A Caribbean Dry Forest: Inferences From The Allometry Of Bark Thickness, Brett T. Wolfe, Gabriel E. Saldaña Diaz, Skip J. Van Bloem
Fire Resistance In A Caribbean Dry Forest: Inferences From The Allometry Of Bark Thickness, Brett T. Wolfe, Gabriel E. Saldaña Diaz, Skip J. Van Bloem
Publications
Trees’ resistance to fire-induced mortality increases with bark thickness, which varies widely among species and generally increases with stem diameter. Because dry forests are more fire-prone than wetter forests, bark may be thicker in these forests. However, where disturbances such as hurricanes suppress stem diameter, trees may not obtain fire-resistant bark thickness. In two hurricane-prone Caribbean dry-forest types in Puerto Rico—deciduous forest and scrub forest—we measured bark thickness on 472 stems of 25 species to test whether tree species obtain bark thicknesses that confer fire resistance, whether bark is thicker in the fire-prone scrub forest than in the deciduous forest, …
An Analysis Of Arthropod Interceptions By Aphis-Ppq And Customs And Border Protection In Puerto Rico, David A. Jenkins, Russell F. Mizell, Skip Van Bloem, Stefanie Whitmire, Leyinska Wiscovitch, Crystal Zaleski, Ricardo Goenaga
An Analysis Of Arthropod Interceptions By Aphis-Ppq And Customs And Border Protection In Puerto Rico, David A. Jenkins, Russell F. Mizell, Skip Van Bloem, Stefanie Whitmire, Leyinska Wiscovitch, Crystal Zaleski, Ricardo Goenaga
Publications
USDA Animal Plant Health Inspection Service Plant Protection and Quarantine (APHIS-PPQ) and Customs and Border Protection (CBP) inspect traffic entering the United States for arthropods posing a threat to national agriculture or ecosystems. We analyzed interceptions made by these agencies in Puerto Rico and the U.S. Virgin Islands between October 2006 and December 2009 for patterns with regard to the frequency of interceptions, origins of interceptions, and the taxa intercepted. 6,952 arthropods were intercepted in freight or luggage entering Puerto Rico and the U.S. Virgin Islands from foreign countries and 9,840 arthropods were intercepted from freight or luggage leaving Puerto …