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Articles 541 - 570 of 4004
Full-Text Articles in Forest Management
The Impacts Of Maple Syrup Production On The Herbaceous Layer In Appalachian Hardwood Forests, Logan Scott Ferguson
The Impacts Of Maple Syrup Production On The Herbaceous Layer In Appalachian Hardwood Forests, Logan Scott Ferguson
Graduate Theses, Dissertations, and Problem Reports (ETD)
Vegetation data were collected from eight maple syrup farms (sugarbushes) and eight undeveloped maple-dominated sites to examine potential differences in understory plant communities due to disturbance effects. Understory plants were identified to the species level and percent cover of aboveground leaf-area for each species was estimated within 600 total quadrats. Overstory data and environmental data were collected to help determine if they had any effect on herbaceous-layer plant communities. Species richness, Shannon diversity, and Pielou’s evenness were calculated, with the analysis showing no significant differences between the site types. The absolute cover of plant functional groups was also compared between …
Potential Effects Of Amynthas Agrestis Invasion On Woody Understory Flora In The Cvnp, Christian Mammana
Potential Effects Of Amynthas Agrestis Invasion On Woody Understory Flora In The Cvnp, Christian Mammana
Williams Honors College, Honors Research Projects
Ohio forests are threatened by the invasive ecosystem engineer A. agrestis. A. agrestis invasion typically co-occurs with the ecosystem engineer, Odocoileus virginianus, where their impacts may synergize. To determine the direct effects of A. agrestis invasion, fenced plots across the Cuyahoga Valley National Park that excluded deer were utilized. The species richness, Shannon diversity and evenness of woody understory flora was measured in each plot. Mustard extraction was used to determine earthworm abundance. Correlations between abundance and measured variables were used to highlight potential invasion effects. Abundance and species richness was found to have a significant, positive correlation (p = …
Transformation Of Farmer Resistance In Conservation Areas: Land Occupation By Farmers In Mount Halimun-Salak National Park, West Java, Sulastri Sardjo, Arya Hadi Dharmawan, Dudung Darusman, Ekawati Sri Wahyuni
Transformation Of Farmer Resistance In Conservation Areas: Land Occupation By Farmers In Mount Halimun-Salak National Park, West Java, Sulastri Sardjo, Arya Hadi Dharmawan, Dudung Darusman, Ekawati Sri Wahyuni
Masyarakat: Jurnal Sosiologi
A number of studies have shown various agrarian conflicts as a response by local farmers against the policy of national parks that prohibits them from accessing conservation forest areas. However, previous studies had not explained the dynamics of power relations between park authorities and farmers who stand in opposition to these policies. This study employs a qualitative research approach complemented by secondary data to explain the transformation of farmer resistance in the Mount Halimun-Salak National Park (TNGHS) area, namely from their repertoire of everyday resistance to practices of land occupation. Specifically, this study uses the “powercube” analytical framework to explain …
Ecological Effects Of Prescribed Burning, Mechanical Cutting, And Post-Treatment Wildfire For Restoration Of Pinus Albicaulis, Enzo Paolo Martelli Moya
Ecological Effects Of Prescribed Burning, Mechanical Cutting, And Post-Treatment Wildfire For Restoration Of Pinus Albicaulis, Enzo Paolo Martelli Moya
Graduate Student Theses, Dissertations, & Professional Papers
The field of ecological restoration is growing rapidly, increasing the need for reliable and generalizable information on the impacts of management interventions aimed to be restorative. Prescribed burning and mechanical cutting have been proposed as primary strategies for restoration. However, there is limited information on their efficacy and effects in subalpine forest types, suggesting that monitoring to inform adaptive management is a priority need. I used data from a 15-year, replicated before-after-control-impact (BACI) study on Pinus albicaulis (whitebark pine) restoration to assess the ecological effects of prescribed burning and mechanical cutting, with and without subsequent unplanned wildfire, as well as …
Deriving Surface Fuels From Uas Imagery Forfire Models, Matthew R. Cunningham
Deriving Surface Fuels From Uas Imagery Forfire Models, Matthew R. Cunningham
Graduate Student Theses, Dissertations, & Professional Papers
Understanding how fuel, weather, and terrain interact to produce fire behavior continues to motivate fire science andhas resulted in development of new physics-based fire behavior models that place increased demands on input data such as fuels. Recent technological advancements in computing, unmanned aerial systems (UAS), and sensors (RGB, multispectral, thermal, and hyperspectral cameras) can provide new opportunities for land managers and scientists to advance knowledge of fuels and fire behavior and their interactions on the landscape. In this study, imagery from high resolution multispectral cameras mounted on UAS were used to build orthomosaics and point clouds of surface fuelbeds in …
Partnerships Create Success For The Devil’S Garden Wild Horses, Laura K. Snell
Partnerships Create Success For The Devil’S Garden Wild Horses, Laura K. Snell
Human–Wildlife Interactions
Many wild horse (Equus ferus caballus) populations that inhabit designated federal land in the United States currently exceed management objectives. Overabundant wild horse populations can adversely impact the ecosystem, native wildlife, and other land uses. Unfortunately, there is not a universal solution, as each impacted area may differ ecologically, economically, socially, and politically. Wild horse management is not just a 1-time project but a long-term program where buy-in is needed from the federal and state agencies, local governments, and private partners. Local county governments and private partners can have important insights and significant influence on the development and …
Investigating Seed Maturation And Mortality: A Mechanism For Post-Fire Regeneration In Non-Serotinous Conifers, Madeleine A. Lopez
Investigating Seed Maturation And Mortality: A Mechanism For Post-Fire Regeneration In Non-Serotinous Conifers, Madeleine A. Lopez
Cal Poly Humboldt theses and projects
Climate warming and associated dry conditions are contributing to increased fire frequency, severity, and size, for many regions in western North America. These changes in fire activity have prompted concern over the long-term persistence of some conifer species, specifically those not adapted to withstand high-severity fire. However, regeneration of non-serotinous conifer species is possible if the timing of fire occurs following seed maturation, and within a heat range that seeds can withstand, in a regenerative mechanism termed “facultative serotiny.” To address this mechanism, I determined the timing of conifer seed maturation using viability testing for four California conifer species: ponderosa …
Understanding The Utilization Of Woody Biomass Through The Perspectives Of Southwest United States Forest Service Land Managers: A Qualitative Study, Mary-Ellen Reyna
Understanding The Utilization Of Woody Biomass Through The Perspectives Of Southwest United States Forest Service Land Managers: A Qualitative Study, Mary-Ellen Reyna
Graduate Student Theses, Dissertations, & Professional Papers
Dry ponderosa pine/mixed conifer stands in the Southwestern United States create an overabundance of woody biomass during restoration and fuel treatments. It has been the job of land managers and resource specialists to develop management goals and practices to treat stands and lower the risk of catastrophic wildfires while managing for accumulations of woody biomass. Knowing the limitations, setbacks, and successes will help researchers, the United States Forest Service, and other land managers better improve woody biomass utilization. In conjunction with three previous ForBio Southwest studies, we present results from ten phone interviews from three Arizona and New Mexico ranger …
Evaluating The Effects Of Tree Community Species Composition On Larix Occidentalis Growth, Christian M. Mercado
Evaluating The Effects Of Tree Community Species Composition On Larix Occidentalis Growth, Christian M. Mercado
Graduate Student Theses, Dissertations, & Professional Papers
Western larch (Larix occidentalis) is an important tree species exclusive to the inland northwest region of North America. It is very intolerant of shade but managed across a range of communities with both shade-tolerant and -intolerant species. Recent works have shown that tree and stand level competition in mixed-species communities can be modified depending on how the characteristics of species in a mixture interact. Such changes can alter the growth relationship of the participant species. Western larch growth has been well-characterized in empirical growth models, where growth is typically estimated from a complex of size, competition, density, and …
A Pantropical Assessment Of Deforestation Caused By Industrial Mining, Stefan Giljum, Victor Maus, Nikolas Kuschnig, Sebastian Luckeneder, Michael Tost, Laura J. Sonter, Anthony J. Bebbington
A Pantropical Assessment Of Deforestation Caused By Industrial Mining, Stefan Giljum, Victor Maus, Nikolas Kuschnig, Sebastian Luckeneder, Michael Tost, Laura J. Sonter, Anthony J. Bebbington
Geography
Growing demand for minerals continues to drive deforestation worldwide. Tropical forests are particularly vulnerable to the environmental impacts of mining and mineral processing. Many local- to regional-scale studies document extensive, long-lasting impacts of mining on biodiversity and ecosystem services. However, the full scope of deforestation induced by industrial mining across the tropics is yet unknown. Here, we present a biome-wide assessment to show where industrial mine expansion has caused the most deforestation from 2000 to 2019. We find that 3,264 km2 of forest was directly lost due to industrial mining, with 80% occurring in only four countries: Indonesia, Brazil, Ghana, …
Identification And Characterization Of Forest Fire Risk Zones Leveraging Machine Learning Methods, Joshua Balson, Matt Chinchilla, Cam Lu, Jeff Washburn, Nibhrat Lohia
Identification And Characterization Of Forest Fire Risk Zones Leveraging Machine Learning Methods, Joshua Balson, Matt Chinchilla, Cam Lu, Jeff Washburn, Nibhrat Lohia
SMU Data Science Review
Across the United States, record numbers of wildfires are observed costing billions of dollars in property damage, polluting the environment, and putting lives at risk. The ability of emergency management professionals, city planners, and private entities such as insurance companies to determine if an area is at higher risk of a fire breaking out has never been greater. This paper proposes a novel methodology for identifying and characterizing zones with increased risks of forest fires. Methods involving machine learning techniques use the widely available and recorded data, thus making it possible to implement the tool quickly.
Smokejumper Obituary: Howells, Dan M. (Mccall 1974), National Smokejumper Association
Smokejumper Obituary: Howells, Dan M. (Mccall 1974), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Hall, Dann Jay (Anchorage 1972), National Smokejumper Association
Smokejumper Obituary: Hall, Dann Jay (Anchorage 1972), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Soil Microbial Community Dynamics In Response To Prescribed Extreme Fires Following Juniperus Virginiana Invasion In The Loess Canyons Of Nebraska, Julie A. Fowler
Soil Microbial Community Dynamics In Response To Prescribed Extreme Fires Following Juniperus Virginiana Invasion In The Loess Canyons Of Nebraska, Julie A. Fowler
School of Natural Resources: Dissertations, Theses, and Student Research
In Nebraska and other regions of the Great Plains, the conifer Juniperus virginiana (eastern redcedar) is converting grasslands to dense woodlands. This is driven by the interacting drivers of fire suppression, altered grazing regimes, climate change and other anthropogenic factors, impacting the provisioning of ecosystem services. This vegetation state transition modifies water resource regulation and biogeochemical cycles leading to altered edaphic properties including soil microbial community composition. To restore these grasslands and control J. virginiana spread, prescribed extreme burns are implemented as a management tool through local prescribed burn associations. We hypothesized that the alternative state transition to dense J. …
Smokejumper Obituary: Anderson, Gary T. (Missoula 1963), National Smokejumper Association
Smokejumper Obituary: Anderson, Gary T. (Missoula 1963), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Habitat Assessment Of Ozark Glades Using Selected Epigeal Predatory Arthropods, Austin Key Jones
Habitat Assessment Of Ozark Glades Using Selected Epigeal Predatory Arthropods, Austin Key Jones
Graduate Theses and Dissertations
Epigeal predatory arthropods were collected with pitfall-style traps in nine sandstone glades of varying ecological stages, and management histories, in the Ozarks of Northern Arkansas over three years. These sites were categorized into three Site Types; Intact, high quality glades; Degraded, forest-encroached glades, and Restored glades which had received woody vegetation removal and burning. Collections of ground spiders (Gnaphosidae), predatory ground beetles (Carabidae), and the sole species of scorpion present in the Ozarks, Centruroides vittatus, were reported on as well as the applicability of arthropod collection methods for glade habitat assessment. Habitat characteristics were recorded for each site and analyzed …
Global Forces Of Change: Implications For Forest-Poverty Dynamics, Priya Shyamsundar, Laura Aileen Sauls, Jennifer Zavaleta Cheek, Kira Sullivan-Wiley, J.T. Erbaugh, P. P. Krishnapriya
Global Forces Of Change: Implications For Forest-Poverty Dynamics, Priya Shyamsundar, Laura Aileen Sauls, Jennifer Zavaleta Cheek, Kira Sullivan-Wiley, J.T. Erbaugh, P. P. Krishnapriya
Natural Resource Management Faculty Publications
This article examines global trends likely to influence forests and tree-based systems and considers the poverty implications of these interactions. The trends, identified through a series of expert discussions and review of the literature, include: (i) climatic impacts mediated through changes in forests, (ii) growth in commodity markets, (iii) shifts in private and public forest sector financing, (iv) technological advances and rising interconnectivity, (v) global socio-political movements, and (vi) emerging infectious diseases. These trends bring opportunities and risks to the forest-reliant poor. A review of available evidence suggests that in a business-as-usual scenario, the cumulative risks posed by these global …
Estimating And Modeling Transpiration Of A Mountain Meadow Encroached By Conifers Using Sap Flow Measurements, Simon Joseph Marks
Estimating And Modeling Transpiration Of A Mountain Meadow Encroached By Conifers Using Sap Flow Measurements, Simon Joseph Marks
Master's Theses
Mountain meadows in the western USA are experiencing increased rates of conifer encroachment due to climate change and land management practices. Past research has focused on conifer removal as a meadow restoration strategy, but there has been limited work on conifer transpiration in a pre-restoration state. Meadow restoration by conifer removal has the primary goal of recovering sufficient growing season soil moisture necessary for endemic, herbaceous meadow vegetation. Therefore, conifer water use represents an important hydrologic output toward evaluating the efficacy of this active management approach. This study quantified and evaluated transpiration of encroached conifers in a mountain meadow using …
Smokejumper Obituary: Price, Jack Edward (Idaho City 1950), National Smokejumper Association
Smokejumper Obituary: Price, Jack Edward (Idaho City 1950), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Monitoring Fine-Scale Forest Health Using Unmanned Aerial Systems (Uas) Multispectral Models, Benjamin T. Fraser, Russell G. Congalton
Monitoring Fine-Scale Forest Health Using Unmanned Aerial Systems (Uas) Multispectral Models, Benjamin T. Fraser, Russell G. Congalton
Faculty Publications
Forest disturbances—driven by pests, pathogens, and discrete events—have led to billions of dollars in lost ecosystem services and management costs. To understand the patterns and severity of these stressors across complex landscapes, there must be an increase in reliable data at scales compatible with management actions. Unmanned aerial systems (UAS or UAV) offer a capable platform for collecting local scale (e.g., individual tree) forestry data. In this study, we evaluate the capability of UAS multispectral imagery and freely available National Agricultural Imagery Program (NAIP) imagery for differentiating coniferous healthy, coniferous stressed, deciduous healthy, deciduous stressed, and degraded individual trees throughout …
Smokejumper Obituary: Hornumg, William Everett “Bill” (Missoula 1959), National Smokejumper Association
Smokejumper Obituary: Hornumg, William Everett “Bill” (Missoula 1959), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Van Noy, Ronald M. “Ron” (Missoula 1953), National Smokejumper Association
Smokejumper Obituary: Van Noy, Ronald M. “Ron” (Missoula 1953), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Making Agriculture Carbon Neutral Amid A Changing Climate: The Case Of South-Western Australia, Ross Kingwell
Making Agriculture Carbon Neutral Amid A Changing Climate: The Case Of South-Western Australia, Ross Kingwell
Climate Science Research Articles
Making Australian agriculture carbon neutral by 2050 is a goal espoused by several agricultural organisations in Australia. How costly might it be to attain that goal, especially when adverse climate change projections apply to agriculture in southern Australia? This study uses scenario analysis to examine agricultural emissions and their abatement via reforestation in south-western Australia under projected climate change. Most scenarios include the likelihood of agricultural emissions being reduced in the coming decades. However, the impact of projected adverse climate change on tree growth and tree survival means that the cost of achieving agricultural carbon neutrality via reforestation is forecast …
Smokejumper Obituary: Steck, William David “Bill” (Pilot 0000), National Smokejumper Association
Smokejumper Obituary: Steck, William David “Bill” (Pilot 0000), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Biocontrol Of The Emerald Ash Borer: An Adapted Nicholson-Bailey Model, Michael Kerckhove, Shuheng Chen
Biocontrol Of The Emerald Ash Borer: An Adapted Nicholson-Bailey Model, Michael Kerckhove, Shuheng Chen
Annual Symposium on Biomathematics and Ecology Education and Research
No abstract provided.
Basal Sprout Centered Management Of Vector-Borne Tree Diseases, Kelly Buch
Basal Sprout Centered Management Of Vector-Borne Tree Diseases, Kelly Buch
Annual Symposium on Biomathematics and Ecology Education and Research
No abstract provided.
Smokejumper Obituary: Cummings, Charles Edwin “Charlie” (Missoula 1955), National Smokejumper Association
Smokejumper Obituary: Cummings, Charles Edwin “Charlie” (Missoula 1955), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Willingness Of Non-Industrial Private Forest Landowners To Obtain A Private Versus Public Consultation, Erika Largacha
Willingness Of Non-Industrial Private Forest Landowners To Obtain A Private Versus Public Consultation, Erika Largacha
LSU Master's Theses
Promoting conservation practices among family forests landowners play a critical role to enhance forest health and ecosystem services. Several certification programs recognize such efforts, but participation among landowners varies based on their characteristics, program requirements, and incentives. One crucial step of certification is to obtain a forest management plan, but acquisition among landowners remains extremely low. Several studies suggest connecting landowners with foresters as the key element towards the adoption of forest management plans. Because foresters are typically employed by public forestry agencies or as private self-employed consultants, landowners' willingness to work with either may differ. As far as we …
Smokejumper Obituary: Rea, Charles Dale (Missoula 1967), National Smokejumper Association
Smokejumper Obituary: Rea, Charles Dale (Missoula 1967), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Fuel Inventory Report For Montana De Oro State Park, Spencer Gordon
Fuel Inventory Report For Montana De Oro State Park, Spencer Gordon
Master of Science in Environmental Sciences and Management Projects
Within the last century anthropogenic effects have shifted fire resilient habitats that are adapted to thousands of years of frequent low intensity fires to landscapes that are susceptible to extreme fire behavior which threaten human assets and sensitive natural resources. Entities that manage forests will need to prioritize fuel reduction as a management tool to promote forest health and mitigate hazardous fire conditions. A fuel inventory of a eucalyptus forest at Montana De Oro State Park in Los Osos, CA was collected using a combination of Brown’s 1973 and Brown’s 1982 methods. The fuel inventory revealed the eucalyptus forest yielded …