Multiple Criteria Decision-Making Approach To Support Timber Transportation Planning – Case Study In Brazil,
2020
Humboldt State University
Multiple Criteria Decision-Making Approach To Support Timber Transportation Planning – Case Study In Brazil, Marinna Lopes Ferreira Gomes
Cal Poly Humboldt theses and projects
Timber transportation is one of the costliest activities for a forest company in Brazil and in many other countries, and it is a determining factor for the success of the forest enterprise. Thus, decision support tools are commonly used as methods to reduce these costs. The purpose of this study was to develop and analyze mathematical models to define the weekly timber transport schedule based on the monthly demands of the customers. The goal is to minimize the operational costs of forest transportation related to distances, timber freshness and road qualities. The decision process was made in two steps; the …
West Chester University Tree Care Policy,
2020
West Chester University of Pennsylvania
West Chester University Tree Care Policy, Grounds Department
WCU Campus Sustainability Initiatives
The purpose of the West Chester University Tree Care Policy is to identify the policies, procedures, and practices that are used in establishing, protecting, maintaining, and removing trees on the West Chester University campus. The overall goal of the plan is to ensure a safe, attractive, and sustainable campus urban forest. By remaining true to this purpose the first impression of potential students and visitors are more apt to be positive.
Plant-Soil Interactions Dominate Soil Microbial Respiration And Soil Organic Carbon Sequestration In A Subtropical Moist Evergreen Broadleaved Forest In China,
2020
University of Kentucky
Plant-Soil Interactions Dominate Soil Microbial Respiration And Soil Organic Carbon Sequestration In A Subtropical Moist Evergreen Broadleaved Forest In China, Zhijie Yang
Theses and Dissertations--Plant and Soil Sciences
Tropical forest soils contain one-third of global soil carbon (C). The warm and moist climate in tropical forests leads to rapid soil organic carbon (SOC) decomposition, with the highest soil microbial respiration rates in the world, so even a slight change in soil C and microbial respiration could affect atmospheric carbon dioxide concentration. However, there remains a lack of understanding of the mechanisms driving microbial respiration in tropical forests, due to different climate and biophysical drivers compared to temperate or boreal forests. Furthermore, forest conversions (from natural forests to plantations) are most widespread in tropical regions, leading to a loss …
Managing Forest Disturbances: Effects On Mule Deer And Plant Communities In Montana's Northern Forests,
2020
University of Montana, Missoula
Managing Forest Disturbances: Effects On Mule Deer And Plant Communities In Montana's Northern Forests, Teagan Ann Hayes
Graduate Student Theses, Dissertations, & Professional Papers
Mule deer (Odocoileus hemionus) are frequently the focus of population and habitat management in the western United States. Land and wildlife managers use disturbance to reset forests to earlier successional stages and improve the quality and quantity of forage available to mule deer. However, the effects of management practices on nutrition and selection vary widely, so the implementation of management practices raises ecological as well as management-related concerns. This work investigated how disturbance from wildfire, prescribed fire, and timber harvest influences the spatial and temporal distribution of nutritional resources in mule deer summer range, and therefore, how the …
Internet Of Things For Sustainable Forestry,
2020
Purdue University
Internet Of Things For Sustainable Forestry, Abdul Salam
Faculty Publications
Forests and grasslands play an important role in water and air purification, prevention of the soil erosion, and in provision of habitat to wildlife. Internet of Things has a tremendous potential to play a vital role in the forest ecosystem management and stability. The conservation of species and habitats, timber production, prevention of forest soil degradation, forest fire prediction, mitigation, and control can be attained through forest management using Internet of Things. The use and adoption of IoT in forest ecosystem management is challenging due to many factors. Vast geographical areas and limited resources in terms of budget and equipment …
Wildland Fire Reburning Trends Across The Us West Suggest Only Short-Term Negative Feedback And Differing Climatic Effects,
2020
University of Colorado
Wildland Fire Reburning Trends Across The Us West Suggest Only Short-Term Negative Feedback And Differing Climatic Effects, Brian Buma, Shelby A. Weiss, K. Hayes, Melissa S. Lucash
Environmental Science and Management Faculty Publications and Presentations
Wildfires are a significant agent of disturbance in forests and highly sensitive to climate change. Short-interval fires and high severity (mortality-causing) fires in particular, may catalyze rapid and substantial ecosystem shifts by eliminating woody species and triggering conversions from forest to shrub or grassland ecosystems. Modeling and fine-scale observations suggest negative feedbacks between fire and fuels should limit reburn prevalence as overall fire frequency rises. However, while we have good information on reburning patterns for individual fires or small regions, the validity of scaling these conclusions to broad regions like the US West remains unknown. Both the prevalence of reburning …
Using Unmanned Aerial Systems (Drones) With A Thermal Sensor To Map And Count Deer Population,
2020
The University of Akron
Using Unmanned Aerial Systems (Drones) With A Thermal Sensor To Map And Count Deer Population, Maxwell C. Ott
Williams Honors College, Honors Research Projects
The number of deer in an area is an important statistic for land managers to know, as overabundance has many negative effects. There are many methods that have been used to count deer in the past, such as using manned helicopters and airplanes, walking on foot, and conducting controlled hunts. UAS (unmanned aerial systems) is a growing field that provides many benefits over traditional methods of counting deer, such as lower cost and missions being less time consuming. Using a thermal sensor attached to a UAS makes it simple to spot any deer during a flight. Two main methods of …
The Interactive Effects Of Microtopography And Hydrology On Ground Layer Vegetation And Soil Gas Flux Responses To A Simulated Emerald Ash Borer Infestation In Black Ash Wetlands,
2020
Michigan Technological University
The Interactive Effects Of Microtopography And Hydrology On Ground Layer Vegetation And Soil Gas Flux Responses To A Simulated Emerald Ash Borer Infestation In Black Ash Wetlands, Elisabeth Stimmel
Dissertations, Master's Theses and Master's Reports
Black ash (Fraxinus nigra Marshall) wetlands are at risk of significant ecological and functional changes due to the invasive emerald ash borer (EAB) (Agrilus planipennis Fairmaire (Coleoptera: Buprestidae)), which kills trees in the Fraxinus (ash) genus. Simulated EAB infestations consisting of girdle treatments and ash cut treatments have been implemented in black ash wetlands to study the impacts of black ash canopy dieoff in these systems. Initial findings include ground layer vegetation shifts and impacts to carbon dioxide (CO2) and methane (CH4) release from soils, but these factors and their interactions with microtopography in …
The Fire And Tree Mortality Database, For Empirical Modeling Of Individual Tree Mortality After Fire,
2020
University of Washington
The Fire And Tree Mortality Database, For Empirical Modeling Of Individual Tree Mortality After Fire, C. Alina Cansler, Sharon M. Hood, J. Morgan Varner, Phillip J. Van Mantgem, Michelle C. Agne, Matthew Ayres, Robert A. Andrus, Jonathon D. Bakker, Michael A. Battaglia, Shelby A. Weiss, Multiple Additional Authors
Geography Faculty Publications and Presentations
Wildland fires have a multitude of ecological effects in forests, woodlands, and savannas across the globe. A major focus of past research has been on tree mortality from fire, as trees provide a vast range of biological services. We assembled a database of individual-tree records from prescribed fires and wildfires in the United States. The Fire and Tree Mortality (FTM) database includes records from 164,293 individual trees with records of fire injury (crown scorch, bole char, etc.), tree diameter, and either mortality or top-kill up to ten years post-fire. Data span 142 species and 62 genera, from 409 fires occurring …
Senescent Trees Stabilize Aboveground Wood Net Primary Production Immediately After Disturbance,
2020
Virginia Commonwealth University
Senescent Trees Stabilize Aboveground Wood Net Primary Production Immediately After Disturbance, Maxim S. Grigri
Theses and Dissertations
In the United States, forests sequester 17% of national carbon (C) emissions annually (UGCRP, 2018), however shifting forest disturbances threaten the stability of this essential C sink. Unlike the high severity, stand-replacing disturbances that were widespread a century ago, today’s eastern temperate forests experience frequent low-to-moderate severity disturbances from invasive pests and pathogens with mixed effects on net primary production (NPP). Carbon cycling stability after disturbance has been reported, however, the mechanisms underlying immediate NPP stability or decline are not well understood. Through weekly measurements of production in a landscape scale experiment, we show that the sustained growth of senescent …
Efficacy Of Forest Restoration Treatments Across A 40-Year Chronosequence At Redwood National Park,
2020
Cal Poly Humboldt
Efficacy Of Forest Restoration Treatments Across A 40-Year Chronosequence At Redwood National Park, Kevin Soland
Cal Poly Humboldt theses and projects
Following 20th century logging, much of the natural coast redwood (Sequoia sempervirens) range consists of dense second-growth stands with slow tree growth and low biodiversity. There is a landscape-scale effort in much of coastal northern California to increase tree growth rates and ecosystem biodiversity via thinning treatments, thereby hopefully accelerating the development of old-growth forest characteristics. Redwood National Park (RNP) has been experimenting with thinning in these forest types since the 1970s. Given the interesting history of logging and restoration in RNP and the future plans for widespread thinning in this region, my thesis examined the effects …
Aspen Growth Response In The Presence Of Inter-Annual Climate Fluctuation And Disturbance In The Lake Tahoe Basin,
2020
Humboldt State University
Aspen Growth Response In The Presence Of Inter-Annual Climate Fluctuation And Disturbance In The Lake Tahoe Basin, Keath K. Sakihara
Cal Poly Humboldt theses and projects
In the western US, aspen forests tend to be small and rare, but have great ecological importance. There is much interest and concern over how aspen in the Sierra Nevada Mountains of the western USA will respond to a changing climate and future disturbances. Impacts from climate change create stress on aspen trees that further compound threats to aspen communities. This analysis assessed the radial growth response of aspen under previously recorded climate conditions to better understand how measurable climate variables affect aspen growth. Along with aspen’s growth response to climate, this analysis also assessed the growth response of aspen …
Forest-Linked Livelihoods In A Globalized World,
2020
University of Michigan, Ann Arbor
Forest-Linked Livelihoods In A Globalized World, Johan A. Oldekop, Laura Vang Rasmussen, Arun Agrawal, Anthony J. Bebbington, Patrick Meyfroidt, David N. Bengston, Allen Blackman, Stephen Brooks, Iain Davidson-Hunt, Penny Davies, Stanley C. Dinsi, Lorenza B. Fontana, Tatiana Gumucio, Chetan Kumar, Kundan Kumar, Dominic Moran, Tuyeni H. Mwampamba, Robert Nasi, Margareta Nilsson, Miguel A. Pinedo-Vasquez, Jeanine M. Rhemtulla, William J. Sutherland, Cristy Watkins, Sarah J. Wilson
Geography
Forests have re-taken centre stage in global conversations about sustainability, climate and biodiversity. Here, we use a horizon scanning approach to identify five large-scale trends that are likely to have substantial medium- and long-term effects on forests and forest livelihoods: forest megadisturbances; changing rural demographics; the rise of the middle-class in low- and middle-income countries; increased availability, access and use of digital technologies; and large-scale infrastructure development. These trends represent human and environmental processes that are exceptionally large in geographical extent and magnitude, and difficult to reverse. They are creating new agricultural and urban frontiers, changing existing rural landscapes and …
Effects Of Non-Commercial Thinning On Great Horned Owls On Turnbull National Wildlife Refuge,
2020
Eastern Washington University
Effects Of Non-Commercial Thinning On Great Horned Owls On Turnbull National Wildlife Refuge, Christopher P. Brady
EWU Masters Thesis Collection
To sustain forest health, increase species diversity and reduce wildfire events in the ponderosa pine (Pinus ponderosa) forests of at Turnbull National Wildlife Refuge (TNWR) managers have implemented a variety of approaches including prescribed burning and non-commercial thinning. The impacts of thinning on owl species diversity and habitat occupancy have not been studied in these ponderosa pine forests. My study had the following objectives 1) compare forest stand metrics between treatment plots, 2) compare owl species richness between treatment plots, 3) examine if occupancy and detection patterns of Great Horned Owls varied with forest condition and season, respectively, and 4) …
Disturbance Refugia Within Mosaics Of Forest Fire, Drought, And Insect Outbreaks,
2020
Oregon State University
Disturbance Refugia Within Mosaics Of Forest Fire, Drought, And Insect Outbreaks, Meg A. Krawchuk, Garrett W. Meigs, Jennifer M. Cartwright, Jonathan D. Coop, Raymond Davis, Andres Holz, Crystal Kolden, Arjan Jh Meddens
Geography Faculty Publications and Presentations
Disturbance refugia – locations that experience less severe or frequent disturbances than the surrounding landscape – provide a framework to highlight not only where and why these biological legacies persist as adjacent areas change but also the value of those legacies in sustaining biodiversity. Recent studies of disturbance refugia in forest ecosystems have focused primarily on fire, with a growing recognition of important applications to land management. Given the wide range of disturbance processes in forests, developing a broader understanding of disturbance refugia is important for scientists and land managers, particularly in the context of anthropogenic climate change. We illustrate …
Central Appalachian Understory Red Spruce (Picea Rubens Sarg.) Growth Rates And Allometric Relationships,
2020
West Virginia University
Central Appalachian Understory Red Spruce (Picea Rubens Sarg.) Growth Rates And Allometric Relationships, Joseph M. Gray
Graduate Theses, Dissertations, and Problem Reports (ETD)
Red spruce (Picea rubens) was a prized timber species in West Virginia during the era of resource exploitation in the late 1800s and early 1900s. Consequently, Central Appalachian red spruce has faced large reductions in range and changes in stand composition. This region is relatively underrepresented in literature partially due to these constrictions. Investigating how stem growth occurs in young individuals can fill in some of our gaps in understanding the species and aid in restoration efforts. We sampled an array of high elevation sites on federal and state lands in West Virginia to analyze understory spruce growth …
Assessment Of Unmanned Aerial Systems And Lidar For The Utility Vegetation Management Of Electrical Distribution Rights-Of-Ways,
2020
West Virginia University
Assessment Of Unmanned Aerial Systems And Lidar For The Utility Vegetation Management Of Electrical Distribution Rights-Of-Ways, Matthew R. Walker
Graduate Theses, Dissertations, and Problem Reports (ETD)
Utility Vegetation Management (UVM) is often the largest maintenance expense for many utilities. However, with advances in Unmanned Aerial Systems (UAS; or more commonly, “drones”) and lidar technologies, vegetation managers may be able to more rapidly and accurately identify vegetation threats to critical infrastructures. The goal of this study was to assess the utility of Geodetics’ UAS-lidar system for vegetation threat assessment for 1.6 km of a distribution electric circuit. We investigated factors which contribute to accurate tree crown detection and segmentation of trees from within an UAS-lidar derived point cloud, and the factors which contribute to accurate tree risk …
Avian And Salamander Response To Young Forest Management In West Virginia,
2020
West Virginia University
Avian And Salamander Response To Young Forest Management In West Virginia, Eric L. Margenau
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation focuses on the effects of various young forest habitat management techniques on the avian and salamander community in West Virginia. Wildlife species associated with the nascent stage of forest succession are experiencing precipitous population declines throughout much of the eastern United States due to decreases in the amount of young forest area which have been brought on by changes in disturbance regimes over the past century. As a result, the need to find novel approaches for creating young forest habitats to sustain young forest wildlife populations is necessary. However, young forest habitat creation often negatively affects species that …
Stable Aggregate Dynamics And Carbon Storage In Acidified Forest Soils: Influence Of Atmospheric Deposition And Conifer Conversion At The Fernow Experimental Forest,
2020
West Virginia University
Stable Aggregate Dynamics And Carbon Storage In Acidified Forest Soils: Influence Of Atmospheric Deposition And Conifer Conversion At The Fernow Experimental Forest, J E. Kemner
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research explored effects of ecosystem change from increased atmospheric nitrogen (N) deposition and stand conversion from mixed-species hardwood to Norway spruce in three experimental watersheds at the Fernow Experimental Forest (FEF). I measured soil aggregation and organic matter (OM) content to investigate the influence of forest fertilization in Watershed 3 (WS3), a hardwood forest receiving (NH4)2SO4 fertilizer, versus Watershed 7 (WS7), a natural hardwood forest. I compared WS7 to Watershed 6 (WS6), a converted Norway spruce (Picea abies) monoculture. I quantified WS6 and WS7 C and N ecosystem pools, including vegetation biomass, …
Smokejumper Obituary: Nicholas, Paul A. (Missoula 1942),
2019
Eastern Washington University
Smokejumper Obituary: Nicholas, Paul A. (Missoula 1942), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
