Genetic Engineering Of Black Cherry (Prunus Serotina) For Reproductive Sterility And Insect Pest Resistance,
2013
Purdue University
Genetic Engineering Of Black Cherry (Prunus Serotina) For Reproductive Sterility And Insect Pest Resistance, Ying Wang
Open Access Dissertations
Black cherry (Prunus serotina Ehrh.) is one of the most valuable hardwoods for high- end cabinetry, furniture, architectural millwork, paneling, and veneer. However, the damage caused by cambial-mining insect pests triggers gummosis in black cherry, a non-specific defense response in which resinous gum is deposited at the site of injury. The gum defects dramatically decrease the yield of high-quality black cherry lumber, and the value can be reduced by as much as 90%. The goal of this project was to optimize the transformation and in vitro rooting system, and to develop transgenic black cherry for reproductive sterility and insect pest …
Long-Term Disturbance Histories Of Managed And Natural Mixed-Hardwood Forests Of Central Indiana,
2013
Purdue University
Long-Term Disturbance Histories Of Managed And Natural Mixed-Hardwood Forests Of Central Indiana, Robert Charles Morrissey
Open Access Dissertations
Over the course of the last century, we have observed changes in forest composition and structure related to changes in disturbance regimes. Reduced frequency and severity of disturbance events has allowed for the ingrowth of shade-tolerant, mesophytic species into forest understories; the result is shifting species compositions and changes in forest structure. In some cases, the loss of masting species, such as oak (Quercus spp.) and hickory (Carya spp.), may also accompany a shift in forest function and further accommodate other species shifts among mammal, insect, and bird populations. Management efforts have been suggested as a possible means …
Climate Change And Fire Management In The Mid-Atlantic Region,
2013
USDA Forest Service
Climate Change And Fire Management In The Mid-Atlantic Region, Kenneth L. Clark, Nicholas Skowronski, Heidi Renninger, Robert M. Scheller
Environmental Science and Management Faculty Publications and Presentations
In this review, we summarize the potential impacts of climate change on wildfire activity in the mid-Atlantic region, and then consider how the beneficial uses of prescribed fire could conflict with mitigation needs for climate change, focusing on patters of carbon (C) sequestration by forests in the region. We use a synthesis of field studies, eddy flux tower measurements, and simulation studies to evaluate how the use of prescibed fire affects short-and long-term forest C dynamics. Climate change may create weather conditions more conducive to wildfire activity, but successional changes in forest composition, altered gap dynamics, reduced understory and forest …
Las Raíces De La Deforestación En El Departamento Pando,
2013
SIT Study Abroad
Las Raíces De La Deforestación En El Departamento Pando, Jeremy Levine-Drizin
Independent Study Project (ISP) Collection
This research paper examines the phenomenon of the recent trend of deforestation in the Pando department in northwestern Bolivia. Historically, the economy of Pando has always been based primarily in agro-forestal extraction activities that provided income to communities without the need to destroy the surrounding forests. The most important of these agro-forestal products have been rubber (primarily during the beginning of the 20th century) and more recently Castaña (Brazilian Nut). Recently however, as the result of various forces, the inhabitants of Pando have begun to cut down there forests at an alarming rate. The most relevant causes of this phenomenon …
Smokejumper Obituary: Muraro, John (Missoula 1957),
2013
Eastern Washington University
Smokejumper Obituary: Muraro, John (Missoula 1957), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Black, Argus (Missoula 1961),
2013
Eastern Washington University
Smokejumper Obituary: Black, Argus (Missoula 1961), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Upland Habitat Quality And Historic Landscape Composition Influence Genetic Variation Of A Pond-Breeding Salamander,
2013
Eastern Kentucky University
Upland Habitat Quality And Historic Landscape Composition Influence Genetic Variation Of A Pond-Breeding Salamander, Stephen C. Richter, Steve J. Price, Chelsea S. Kross, Jeremiah R. Alexander, Michael E. Dorcas
Forestry and Natural Resources Faculty Publications
Understanding the temporal and spatial scale at which habitat alteration impacts populations is important for conservation and management. Amphibians have declined more than other vertebrates, and pond-breeding species are particularly susceptible to habitat loss and fragmentation because they have terrestrial and aquatic life stages. One approach to management of pond-breeding species is protection of core upland habitat surrounding the breeding pond. We used genetic variation as an indicator of population status in a common amphibian species, spotted salamanders (Ambystoma maculatum), to determine how amount of suitable upland habitat relates to population status in the greater Charlotte, North Carolina, …
Smokejumper Obituary: Stucky, Carroll Jackson (Missoula 1953),
2013
Eastern Washington University
Smokejumper Obituary: Stucky, Carroll Jackson (Missoula 1953), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Eigsti, Joseph M. (North Cascades 1945),
2013
Eastern Washington University
Smokejumper Obituary: Eigsti, Joseph M. (North Cascades 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Job Growth And Loss Across Sectors And Time In The Western Us: The Impact Of Large Wildfires,
2013
Portland State University
Job Growth And Loss Across Sectors And Time In The Western Us: The Impact Of Large Wildfires, Max Nielsen-Pincus, Cassandra Moseley, Krista Gebert
Environmental Science and Management Faculty Publications and Presentations
The link between economic growth and natural hazards has long been studied to better understand the effects of natural hazards on local, regional, and country level growth patterns. However, relatively little generalizable research has focused on wildfires, one of the most common forest disturbances in the western United States (US). We examined the effect of large wildfires on employment growth across sectors and time in the western US.We matched wildfire occurrences from 2004 to 2008 and their duration with monthly employment data to identify the effect of wildfire on employment growth. Wildfires generally tended to exhibit positive effects on employment …
Female Elk Contacts Are Neither Frequency Nor Density Dependent,
2013
Northern Rocky Mountain Science Center
Female Elk Contacts Are Neither Frequency Nor Density Dependent, P. C. Cross, T. G. Creech, Michael Ryan Ebinger, Kezia R. Manlove, K. Irvine, J. Henningsen, J. Rogerson, B. M. Scurlock, S. Creel
Wildland Resources Faculty Publications
Identifying drivers of contact rates among individuals is critical to understanding disease dynamics and implementing targeted control measures. We studied the interaction patterns of 149 female elk (Cervus canadensis) distributed across five different regions of western Wyoming over three years, defining a contact as an approach within one body length (∼2 m). Using hierarchical models that account for correlations within individuals, pairs, and groups, we found that pairwise contact rates within a group declined by a factor of three as group sizes increased 33-fold. Per capita contact rates, however, increased with group size according to a power function, such that …
Climate Change And North American Rangelands: Assessment Of Mitigation And Adaptation Strategies,
2013
USDA Forest Service
Climate Change And North American Rangelands: Assessment Of Mitigation And Adaptation Strategies, Linda A. Joyce, David D. Briske, Joel R. Brown, H. Wayne Polley, Bruce A. Mccarl, Derek W. Bailey
United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications
Recent climatic trends and climate model projections indicate that climate change will modify rangeland ecosystem functions and the services and livelihoods that they provision. Recent history has demonstrated that climatic variability has a strong influence on both ecological and social components of rangeland systems and that these systems possess substantial capacity to adapt to climatic variability. Specific objectives of this synthesis are to: 1) evaluate options to mitigate greenhouse gas emissions and future climate change; 2) survey actions that individuals, enterprises, and social organizations can use to adapt to climate change; and 3) assess options for system transformation when adaptation …
Smokejumper Obituary: Werner, Harold (North Cascades 1948),
2013
Eastern Washington University
Smokejumper Obituary: Werner, Harold (North Cascades 1948), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
The Role Of Wood Microsites At Timberline-Alpine Meadow Borders For Conifer Regeneration,
2013
Portland State University
The Role Of Wood Microsites At Timberline-Alpine Meadow Borders For Conifer Regeneration, Adelaide Chapman Johnson
Dissertations and Theses
This research aimed to determine whether wood microsites ("nurse logs"), which are regeneration sites in Pacific Northwest (PNW) subalpine forests, supported regeneration at timberline-alpine meadow borders. Upward advance of forests and conifer invasion into alpine meadows, which may be occurring in conjunction with climate warming, have gained worldwide attention. Successful alpine meadow seedling regeneration depends on suitable substrate availability, or microsites, for seedling establishment. To better understand factors associated with wood microsite occurrence, mechanisms of wood input were determined and four specific hypotheses were posed to assess: (1) seedling density and seedling survival; (2) growing season length, summer mean growing …
Dendrochronological Reconstruction Of Fire, Bogus Basin Area Boise National Forest,
2013
Boise State University
Dendrochronological Reconstruction Of Fire, Bogus Basin Area Boise National Forest, Amy L. Cutter
Student Research Initiative
Since people have settled along the Boise Front, there have been very few documented fire disturbances. This is likely an outcome of fire suppression policies. There is evidence, visible as scars on living trees, that the old growth ponderosa pines located on the East Side Trail in the Boise National Forest have withstood multiple fires. Samples were collected by using a chainsaw to remove small, partial cross-sections from several trees. The Boise Front master chronology was used to accurately cross-date the fire-scarred samples using COFECHA. Analysis of the samples revealed ten fire events ranging from 1709 to 1889. The fire …
Capturing Fire: Rxcadre Takes Fire Measurements To Whole New Level,
2013
Gail Wells Communications
Capturing Fire: Rxcadre Takes Fire Measurements To Whole New Level, Gail Wells
Joint Fire Science Program Digests
Models of fire behavior and effects do not always make accurate predictions, and there is not enough systematically gathered data to validate them. To help advance fire behavior and fire effects model development, the Joint Fire Science Program is helping fund the RxCADRE, which is made up of scientists from the U.S. Forest Service and several universities who orchestrate and collect data on prescribed burns in the southeastern United States. The RxCADRE-prescribed burns are yielding a comprehensive dataset of fire behavior, fire effects, and smoke chemistry and dynamics, with measurements taken systematically at multiple, cascading scales. RxCADRE data will help …
Comparing Mechanical Mastication, Herbicide Application, And Prescribed Fire Within An Established Longleaf Pine (Pinus Palustris Mill.) Ecosystem,
2013
Clemson University
Comparing Mechanical Mastication, Herbicide Application, And Prescribed Fire Within An Established Longleaf Pine (Pinus Palustris Mill.) Ecosystem, Brett Moule
All Dissertations
Longleaf pine (Pinus palustris Mill.) forests once dominated the landscape throughout the Southeast and much of its success could be attributed to ecological disturbances such as fire. However, the use of fire as a management tool may be at risk due to a growing human population, negative impacts resulting from smoke production, and the imposition of restrictive federal and state laws, policies, and standards. This study was designed to determine whether alternative silviculture treatments such as herbicide or mechanical mastication can be used as surrogates to prescribed fire. We applied three commonly used silviculture treatments (prescribed burning, mechanical mastication, …
Elk (Cervus Elaphus) Seasonal Habitat Selection In A Heterogeneous Forest Structure,
2013
Utah State University
Elk (Cervus Elaphus) Seasonal Habitat Selection In A Heterogeneous Forest Structure, Jesse N. Popp, David N.C. Mcgeachy, Josef Hamr
Aspen Bibliography
Seasonal habitat selection by the reintroduced Burwash elk population, approximately 30 km south of Sudbury, Ontario, has been analysed in order to assist in the development of future management. Twenty-five adult females were radio-collared and tracked 1–3 times a week for 3 years. The most prominent patterns included selection of intolerant hardwood forests (trembling aspen, white birch, and balsam poplar) during all seasons, while Great Lakes-St. Lawrence pines (white and red pine dominated stands) were used less than expected based on availability for all seasons. The selection patterns are likely associated with seasonal climatic conditions and forage preferences. Because the …
Smokejumper Obituary: Weeden, Dean John (Missoula 1957),
2013
Eastern Washington University
Smokejumper Obituary: Weeden, Dean John (Missoula 1957), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Peay, William G. (Cave Junction 1960),
2013
Eastern Washington University
Smokejumper Obituary: Peay, William G. (Cave Junction 1960), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
