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Articles 1 - 30 of 157
Full-Text Articles in Forest Sciences
Planting Oak Seedlings For Forest Regeneration, Ryan Bohannon
Planting Oak Seedlings For Forest Regeneration, Ryan Bohannon
Forestry and Natural Resources
Oaks are an important component of forests across the Southeast and are favored for a variety of objectives, including the provision of wildlife habitat and timber. Planting oak seedlings can be an effective practice for promoting successful oak regeneration in managed forests. This publication provides forest landowners and managers with practical recommendations for oak enrichment planting, including species and seedling selection, seedling care, planting techniques, and post-planting practices to promote survival and growth.
Urban Trees In The Urban Hydrology Cycle, Jorge R. Vera
Urban Trees In The Urban Hydrology Cycle, Jorge R. Vera
Theses, Dissertations and Capstones
In urban forestry, trees provide numerous economic, ecological, and aesthetic benefits to the surrounding community. One of their key roles is intercepting stormwater runoff, reducing flooding risk, and improving water quality. Chapter 1 of this thesis characterized the ecological and economic contributions of urban trees on the Marshall University campus and provides guidance on their management and conservation in the future. Chapter 2 examined how urban tree species modify the urban hydrology cycle by altering the volume and timing of precipitation delivery. In Chapter 1, we inventoried 114 acres of Marshall University's main campus in Huntington, WV, from June 28 …
Periodic Evaluations Indicate Increased Effectiveness Of Oregon Master Woodland Manager Volunteer Program, Alicia Christiansen, Lauren Grand, Norma Kline, Tiffany Hopkins
Periodic Evaluations Indicate Increased Effectiveness Of Oregon Master Woodland Manager Volunteer Program, Alicia Christiansen, Lauren Grand, Norma Kline, Tiffany Hopkins
Journal of Extension
The Oregon State University Extension Service Master Woodland Manager (MWM) volunteer program trains landowners in core forestry and natural resource topics. Landowners participate in the MWM program to increase their forest management knowledge, improve their own management practices, and prepare them to volunteer in their community (Bowers, 2000). We surveyed MWM volunteers to understand the effectiveness of the program and what barriers exist to volunteering. Volunteers find the program to be increasingly adequate for personal management and answering questions, but time continues to be the biggest barrier for completing required volunteer hours.
Restoration At The Intersection Of Science And Outreach-The Working Woods Learning Forest, Katharine L. Stuble, David J. Burke, Samuel C. Harbol, Chad Knisely, Jessica Miller Mecaskey, Alexa S. Wagner, Michael Watson, Kevin E. Mueller
Restoration At The Intersection Of Science And Outreach-The Working Woods Learning Forest, Katharine L. Stuble, David J. Burke, Samuel C. Harbol, Chad Knisely, Jessica Miller Mecaskey, Alexa S. Wagner, Michael Watson, Kevin E. Mueller
Biological, Geological, and Environmental Faculty Publications
Botanical gardens and arboreta have enormous (if often under-realized) potential to increase understanding of restoration as a predictive science while simultaneously serving as platforms promoting large-scale restoration by public and private stakeholders. Public gardens often have deep histories of both research and outreach and, increasingly, engagement in restoration efforts. As a team of researchers and practitioners, we share our experiences using a forest management manipulation at the Holden Arboretum for both research and outreach. Forest management is a key tool for enhancing biodiversity and ecosystem services in young forests. Known as the Working Woods Learning Forest, this restoration simultaneously serves …
Annotated Checklist And Distribution Of The Jewel Beetles (Coleoptera: Buprestidae) Of Idaho, Luc Leblanc, Emma L. Eakins
Annotated Checklist And Distribution Of The Jewel Beetles (Coleoptera: Buprestidae) Of Idaho, Luc Leblanc, Emma L. Eakins
Insecta Mundi
An annotated checklist of the 102 species of Buprestidae (Coleoptera) known to be present in the state of Idaho is provided, with photographs and detailed distribution maps for each species. The checklist is based on label data from 7,506 museum specimens, 21 observations obtained from iNaturalist.org and Bug-Guide.net, and 63 distribution records from published literature. Buprestis consularis Gory is a new record for Idaho, formerly reported as Buprestis nutalli Kirby, which is not known to occur in the state. Obscure past records of Anthaxia retifera LeConte and Melanophila occidentalis Obenberger published in the literature are regarded as dubious and are …
The Forest Through The Trees: Modeling The Ecological Niche And Potential Assemblage Distribution Of Oak-Hickory Forests Across The Eastern U.S., Elijah Worley
Electronic Theses and Dissertations
Understanding how tree species’ ranges and populations may shift by the end of the 21st Century is critical for effective conservation and forest management. Ecological niche models are widely used to predict species distributions by modeling the relationships between environmental variables and species presence. While numerous models have been developed for individual tree species across the USA, there is limited research on how tree species assemblages, such as oak-hickory forests, will respond to changes in climate over time. Maxent modeling software was used to predict potential shifts in suitable habitat for the oak-hickory forest type, based on environmental variables …
An Assessment Of The California Logging Workforce, Kendra Jean Gerstenberg
An Assessment Of The California Logging Workforce, Kendra Jean Gerstenberg
Cal Poly Humboldt theses and projects
There is limited literature describing the capacity and capabilities of the logging workforce in California. This study examines the logging workforce in California to quantify the number of logging crews, assess demographic diversity, and evaluate capacity and capabilities. The target population was California Licensed Timber Operators (LTOs) who have the legal right to harvest timber. A survey was developed and distributed to LTOs on the CAL FIRE database. Surveys were also distributed at regional logging conferences or collected by phone. Data were analyzed using Statistical Package for the Social Sciences (SPSS) and emergent coding for follow-up interviews was conducted. There …
Olaf: An Assessment Of Online Learning Outcomes Among Forestry And Natural Resource Management University Students, Krista Merry, Pete Bettinger, Taeyoon Lee
Olaf: An Assessment Of Online Learning Outcomes Among Forestry And Natural Resource Management University Students, Krista Merry, Pete Bettinger, Taeyoon Lee
Journal of Extension
Online learning has become an important advance in education in the last decade. We developed an online learning system related to land and tree measurements. University students were given pre- and post-exposure surveys for two courses offered within the online system. Surveys were designed to assess whether the knowledge level and confidence of students increased through interaction with the online system. A final assessment was conducted to understand user experiences with the online technology. Statistically significant increases in knowledge and confidence concerning land measurement concepts and tree measurement topics were evident among survey participants. Survey participants agreed that the course …
Building Gender Equity In Forestry Education: The Benefits Of Oregon’S Women Owning Woodlands Network, Lauren A. Grand, Tiffany Hopkins
Building Gender Equity In Forestry Education: The Benefits Of Oregon’S Women Owning Woodlands Network, Lauren A. Grand, Tiffany Hopkins
Journal of Extension
The Women Owning Woodlands Network was launched in 2005 as a way to provide collaborative and hands-on peer learning education to women who felt uncomfortable participating in traditional Extension programs. Since its inception the program as grown to provide education and resources for over 300 women. We surveyed these women to identify if the program continues to meet their needs. It is evident that WOWNet has continued to be an important part of OSU FNR’s outreach education program and continues to meet the needs of a historically undeserved group of landowners in ways that traditional programming does not.
Cascading Effects Of Assumption Violations In An Extension Program Development Model, Susan T. Guynn, Patrick Hiesl, Shari L. Rodriguez, Janet Steele
Cascading Effects Of Assumption Violations In An Extension Program Development Model, Susan T. Guynn, Patrick Hiesl, Shari L. Rodriguez, Janet Steele
Journal of Human Sciences and Extension
The Cooperative Extension Service delivers informal educational programs that can help to improve the lives of citizens and communities. Planning, design, implementation, and evaluation are crucial considerations for Extension programs and serve as the foundation for the Extension Program Development Model. The Extension Program Development Model has underlying assumptions that may not be explicitly stated or apparent to Extension practitioners, but if the assumptions are violated, it can lead to cascading effects that impact the effectiveness of an Extension program. This paper will discuss the assumptions of the Extension Program Development Model and the potential impacts of assumption violations. We …
Gps Accuracy Of Smartphones For Crowdsourcing Research, Derron L. Dike
Gps Accuracy Of Smartphones For Crowdsourcing Research, Derron L. Dike
Master of Science in Environmental Sciences and Management Projects
ABSTRACT GPS Accuracy of Smartphones for Crowdsourcing Research Derron Dike Utilizing crowdsourcing with smartphones as a method for field data collection can contribute an array of data for scientific studies and land management applications. This study used crowdsourcing to examine smartphone built-in GPS performance for providing location-specific information with potential forestry applications. The usability of smartphones for GPS data collection in forestry studies or other practical applications is dependent on the level of accuracy required for those applications. A Smartphone Accuracy Trial was designed to test the GPS accuracy performance of current smartphones. Participants used the ArcGIS Field Maps application …
The Biltmore Forest School And The Establishment Of Forestry Education In America, Dan Barry Croom
The Biltmore Forest School And The Establishment Of Forestry Education In America, Dan Barry Croom
Journal of Research in Technical Careers
The Biltmore Forest School, despite its unusual existence within the affluent Biltmore Estate, played a crucial role in the early 20th-century American forestry movement. Founded by Carl A. Schenck and supported by George Vanderbilt II, the school aimed to educate foresters and promote sustainable forest management. However, many aspects of the Biltmore experiment failed due to the new and untested nature of forestry science in America. This experiment exposed a fundamental divide in forestry education, with Gifford Pinchot advocating for conservation-centered teaching while Schenck believed in the economic viability of lumber production. Ultimately, the Biltmore Forest School offered valuable vocational …
Proposing Urban Agroforestry Designs For Lincoln, Nebraska: A Model From Berlin, Germany, Noah Johnson
Proposing Urban Agroforestry Designs For Lincoln, Nebraska: A Model From Berlin, Germany, Noah Johnson
Honors Program: Senior Projects (Public)
Given the threat of a worsening climate crisis, there is a strong need for community and ecosystem resilience. Diverse urban agroforestry systems have the potential to accomplish both and meet many of the objectives outlined in the city of Lincoln, Nebraska’s climate action plan. Additionally, Berlin, Germany could provide an effective model for Lincoln in this regard given the city’s extensive history of established urban agroforestry systems. The objective of this study then is to develop a design for an urban agroforestry site modeled on Berlin’s allotment gardens and tailored to Lincoln’s needs. The methods for creating this design included …
Automated Tree Mortality Detection Using Ubiquitously Available Public Data, Michael T. Huggins
Automated Tree Mortality Detection Using Ubiquitously Available Public Data, Michael T. Huggins
Master's Theses
Understanding the dynamic interplay between fire severity, topography, and tree mortality, is crucial for predicting future forest dynamics and enhancing resilience against climate change-induced wildfire regimes. This thesis develops a multi-sensor approach for automated estimation of tree mortality, then applies it to examine trends in tree mortality over a six-year period across a fire affected study site in the Trinity River basin in Northern California. The Random Forest model uses publicly available USGS 3D Elevation Program Lidar (3DEP) and NAIP imagery as inputs and is likely to be easily adaptable to other landscapes. The model had a Receiver Operating Characteristic …
Longevity Of Prescribed Fire Effectiveness In Mixed-Evergreen Forests Of The Klamath Mountains, Kaily M. Fineran
Longevity Of Prescribed Fire Effectiveness In Mixed-Evergreen Forests Of The Klamath Mountains, Kaily M. Fineran
Cal Poly Humboldt theses and projects
Prescribed fire is a common management tool used across the western United States to create wildfire-resilient ecosystems and communities. The Klamath Mountains of northern California, USA has experienced numerous, large wildfires in recent years. This is due in part to a combination of highly flammable fuels, uncharacteristic weather events, and high fuel accumulations as a result of fire exclusion and forest management practices. Within the last decade, local land management organizations and the Karuk Tribe have begun re-introducing prescribed fire in low elevation, mixed evergreen forests. While the long-term effects of fuel treatments are not well-known, these efforts provided a …
Post-Fire Persistance Of Sequoia Semperviens In A Secondary Forest: Examining Drivers Of Basal Resprouting Response, Jackson T. Carrasco
Post-Fire Persistance Of Sequoia Semperviens In A Secondary Forest: Examining Drivers Of Basal Resprouting Response, Jackson T. Carrasco
Cal Poly Humboldt theses and projects
Historically frequent-fire forest ecosystems are now facing increased size, frequency, and severity of fires attributed to climate change, intensive forest management, and fire exclusion. Understanding post-fire resilience in forest ecosystems is critical amidst escalating challenges posed by recent increases in fire activity. This study examined the basal resprouting response of coast redwood (Sequoia sempervirens) in a secondary forest two years after the CZU Lightning Complex fire on the central coast of California. Robust allometric equations were developed to quantify redwood resprout biomass and leaf area, revealing strong explanatory power for biomass equations (R² > 0.85). Probability of …
Integrating Forest Structural Diversity Measurement Into Ecological Research, Jeff W. Atkins, Parth Bhatt, Luis Carrasco, Emily Francis, James E. Garabedian, Christopher R. Hakkenberg, Brady S. Hardiman, Jinha Jung, Anil Koirala, Elizabeth A. Larue, Sungchan Oh, Gang Shao, Guofan Shao, H. H. Shugart, Anna Spiers, Atticus E.L. Stovall, Thilina D. Surasinghe, Xiaonan Tai, Lu Zhai, Tao Zhang, Keith Krause
Integrating Forest Structural Diversity Measurement Into Ecological Research, Jeff W. Atkins, Parth Bhatt, Luis Carrasco, Emily Francis, James E. Garabedian, Christopher R. Hakkenberg, Brady S. Hardiman, Jinha Jung, Anil Koirala, Elizabeth A. Larue, Sungchan Oh, Gang Shao, Guofan Shao, H. H. Shugart, Anna Spiers, Atticus E.L. Stovall, Thilina D. Surasinghe, Xiaonan Tai, Lu Zhai, Tao Zhang, Keith Krause
Michigan Tech Publications
The measurement of forest structure has evolved steadily due to advances in technology, methodology, and theory. Such advances have greatly increased our capacity to describe key forest structural elements and resulted in a range of measurement approaches from traditional analog tools such as measurement tapes to highly derived and computationally intensive methods such as advanced remote sensing tools (e.g., lidar, radar). This assortment of measurement approaches results in structural metrics unique to each method, with the caveat that metrics may be biased or constrained by the measurement approach taken. While forest structural diversity (FSD) metrics foster novel research opportunities, understanding …
Remote Sensing Characterization Of Ecosystem Structure And Functional Types To Inform On Biodiversity Conservation In The Lowland Chocó Rainforest, Derek Tesser
Dissertations, Theses, and Capstone Projects
This dissertation focuses on the utilization of remote sensing techniques to characterize ecosystem structure and functional types to inform on biodiversity conservation. This work is motivated by a guiding hypothesis that increased degradation of tropical forest biodiversity due to human activity results in in measurable changes in ecosystem processes that can be detected using remote sensing technologies. Throughout this dissertation, testing of aspects of this hypothesis involve comparing areas with varying degrees of human-induced degradation in a biodiverse tropical ecoregion, the lowland Chocó rainforest of Ecuador. Remote sensing data is used to evaluate changes in vegetation structure, thermal regimes, and …
Quantification Of Influential Surface Fuel Parameters In Fire-Prone Ecosystems Of The Netherlands, Lauren Lara
Quantification Of Influential Surface Fuel Parameters In Fire-Prone Ecosystems Of The Netherlands, Lauren Lara
Electronic Theses and Dissertations
Changing climate conditions in northwest Europe present an increasing wildfire risk in the Netherlands. Focus on fuels monitoring in this region is not as extensive as it is in the United States. Accurate estimation of biomass fuel loading is integral to prevention of wildfires which pose a significant risk to both human lives and property. This research project attempted to create predictive models for three major fuel categories (litter/duff, shrub, and downed woody material). Reduction of the number of parameters to measure would streamline the process of fuel load estimation by reducing the number of measurements that need to be …
The Art And Science Of Wood: From Pyrography To Termites And Wood Decomposition, Joanna D. Walitalo
The Art And Science Of Wood: From Pyrography To Termites And Wood Decomposition, Joanna D. Walitalo
Dissertations, Master's Theses and Master's Reports
Wood is vital to many natural ecosystems, as it provides energy, nutrients, and habitat for organisms from the micro- to the macro- scale. Wood is also critical to humans for similar reasons, and can be an important medium of art and education. This dissertation addresses three diverse aspects of wood with the contexts of science, art, and education. First, we explored the impact of timber harvest techniques and site preparation on microbial wood decay and subterranean termite responses on a forest-stand scale. The amount of coarse woody debris removed post-harvest, coupled with the location and species of the test wood …
Disease Resistance And Productivity In Genetically Improved Loblolly Pine: Results From A Resistance Screening Trial And A Midrotation Comparison Of Genetic Improvement Levels, Stephen W. Goodfellow
Disease Resistance And Productivity In Genetically Improved Loblolly Pine: Results From A Resistance Screening Trial And A Midrotation Comparison Of Genetic Improvement Levels, Stephen W. Goodfellow
Theses and Dissertations
Decades of tree improvement has resulted in genetic gains in loblolly pine productivity, form, and resistance to fusiform rust. The goal of this study was to advance the understanding and applied use of genetic improvement by analyzing inter- and intra-provenances hybrids’ rust resistance and evaluating midrotation performance of varying levels of genetically improved stock types. The first study compares 16 seedlots at the USDA Resistance Screening Center and evaluates rust resistance of controlled-pollinated inter- and intra-provenances crosses, and openpollinated seedlots from three provenances: Western Gulf, Atlantic Coastal, and Interior Piedmont. Post inoculation, one Coastal OP seedlot was resistant and ten …
Mapping Forest Structure In Mississippi Using Lidar Remote Sensing, Nitant Rai
Mapping Forest Structure In Mississippi Using Lidar Remote Sensing, Nitant Rai
Theses and Dissertations
This study aimed at evaluating the agreement of spaceborne Light Detection and Ranging (lidar) ICESat-2 canopy height with Airborne Laser Scanning (ALS) derived canopy height to inform about the performance of ICESat-2 canopy height metrics and understand its uncertainties and utilities. The agreement was assessed for different forest types, physiographic regions, a range of percent canopy cover, and diverse disturbance histories. Results of this study suggest that best agreements are found using strong beam data collected at night for canopy height retrieval using ICESat-2. The ICESat-2 showed great potential for estimating canopy heights, particularly in evergreen forests with high canopy …
Attitudes And Perceptions Of College Students And Recent College Graduates Towards Forestry And Wood Products Science Fields, Amanda Peres Vieira Bedette
Attitudes And Perceptions Of College Students And Recent College Graduates Towards Forestry And Wood Products Science Fields, Amanda Peres Vieira Bedette
Theses and Dissertations
Over the past few decades, university level US Forestry and Wood Science and Technology programs have faced declining enrollment. As a result, the seeming disinterest of younger generations has impacted employment in these sectors. In an attempt to bridge the communication gap among colleges/industries, this study was created to attract the interest and maintain the enthusiasm of new generations of professionals and currently enrolled college students in the United States. In September 2021, an online survey was created and distributed to over 1500 alumni and students and received 1,495 usable surveys. Analysis performed on the resultant data included descriptive statistics …
Use Of Consumer Grade Small Unmanned Aerial Systems (Suas) For Mapping Storm Damage In Forested Environments, James Dewey Cox
Use Of Consumer Grade Small Unmanned Aerial Systems (Suas) For Mapping Storm Damage In Forested Environments, James Dewey Cox
Theses and Dissertations
Storm damages to forested environments pose significant challenges to landowners, land managers, and conservationists alike. Damage scope and scale assessments can be difficult, costly, and time consuming with conventional pedestrian survey techniques. Consumer grade sUAS technology offers an efficient, cost-effective way to accurately assess storm damage in small to moderate sized survey areas (less than 10 km²). Data were collected over a 0.195 km² area of damaged timber within the Kisatchie National Forest in Central Louisiana using a DJI Mavic 2 Pro drone. Collected imagery was processed into an orthomosaic using Agisoft Metashape Professional with a resulting ground sampling distance …
The Study Of Tree Biomass Calculation By Comparing Partial Harvest Method With The Allometric Equations Method, Kanlayarat Jantawong, Titinan Pothong
The Study Of Tree Biomass Calculation By Comparing Partial Harvest Method With The Allometric Equations Method, Kanlayarat Jantawong, Titinan Pothong
Journal of Bioresource Management
This study aimed to investigate the effective of partial harvest method used for tree biomass estimation. Such method was analyzed for the correlation in compare with invented allometric equations. The advantages and disadvantages of those methods were discussed. The significantly difference between estimation methods were analyzed. As a result, tree biomass calculated by the Brown’s allometric equation produced highest results, followed by the partial harvest method, Tsutsumi’s, Chave’s and Pothong’s equations respectively. The selected allometric equations showed the positive correlation with partial harvest method. The highest positive correlation was found between the partial harvest method and both equation of Chave …
The Role Of Edge Effects On Emerald Ash Borer Infestation And Forest Responses, Bronte Hoefer
The Role Of Edge Effects On Emerald Ash Borer Infestation And Forest Responses, Bronte Hoefer
Undergraduate Honors Theses
The emerald ash borer (EAB; Agrilus planipennis) is a buprestid beetle native to Asia, classified as an invasive species in North America. EAB infests trees of genus Fraxinus (ash) and has spread to 35 states since its introduction in the early to mid-1990s. Notably, EAB has the potential to functionally extirpate all native ash species in North America. Our study aims to characterize the ecological impacts of EAB infestation in the Roanoke Valley of Southwest Virginia, to quantify the impact of edge effects on EAB forest invasion and mortality of ash trees, as well as investigate the role that …
Lidar-Landsat Covariance For Predicting Canopy Fuels, Margaret D. Epstein
Lidar-Landsat Covariance For Predicting Canopy Fuels, Margaret D. Epstein
Graduate Student Theses, Dissertations, & Professional Papers
Managing wildfires in the western United States is becoming increasingly complex. Visualizing and quantifying canopy structures allows fire managers to both plan for fire and track recovery. Light detecting and ranging, or LiDAR can measure forests in three dimensions, but has limited spatial and temporal coverage. LiDAR-Landsat covariance uses machine learning to fill in the spatial and temporal gaps of LiDAR coverage with supplemental Landsat imagery. However, in order to capture real forest dynamics, a model needs to be stable enough to detect long term trends, sensitive to episodic disturbance, and general enough to work on multiple landcovers. The purpose …
Gambel Oak Care, Shawn Olsen, Debbie Amundsen, Shital Poudyal
Gambel Oak Care, Shawn Olsen, Debbie Amundsen, Shital Poudyal
All Current Publications
Gambel oak is commonly called scrub oak, but other common names are Rocky Mountain white oak and Utah white oak. The scientific name is Quercus gambelii, after William Gambel, an American naturalist. This fact sheet reviews Gambel oak's usability in the landscape, its care, growth requirements, diseases and pests, and maintenance.
Pinyon-Juniper Ecology And Management, Gabrielle Harden, Darren Mcavoy
Pinyon-Juniper Ecology And Management, Gabrielle Harden, Darren Mcavoy
All Current Publications
This fact sheet describes pinyon-juniper ecology, expansion, and management.
In-Flux: Economic And Community Adaptations Of Former Timber Mill-Towns In The American West, Cherilyn P. Ashmead
In-Flux: Economic And Community Adaptations Of Former Timber Mill-Towns In The American West, Cherilyn P. Ashmead
Cal Poly Humboldt theses and projects
Once built around natural resource extractive industries, rural communities’ economies are changing as the United States is transitioning away from its industrial past. While much research has focused on rural economic shifts from natural resource production toward amenity-driven economies (Morzillo et al., 2015; Winkler et al, 2007), less research has explored the economic and demographic trends in areas pursuing new modes of production. This two-part study focuses on an understudied region with historic ties to timber in dry mixed-conifer forests, much of which are under federal land management. With few natural amenity draws, the region has largely maintained production-based sectors. …