Interactions Between Fire Severity And Forest Biota In The Central Sierra Nevada: Formation And Impact Of Small-Scale Fire Refugia And The Effect Of Fire On Forest Structure Predictive Of Fisher (Pekania Pennanti) Den Habitat, 2018 Utah State University
Interactions Between Fire Severity And Forest Biota In The Central Sierra Nevada: Formation And Impact Of Small-Scale Fire Refugia And The Effect Of Fire On Forest Structure Predictive Of Fisher (Pekania Pennanti) Den Habitat, Erika M. Blomdahl
All Graduate Theses and Dissertations
Fire is a natural and essential component of forests in western North America. Fire maintains biodiversity through the creation of different habitat types, and regular fire rotations reduce the accumulation of woody fuels and thick understory plant densities that give rise to catastrophic fire. The practice of fire exclusion has altered western forests and increased the risk of widespread change under rising temperatures projected for the 21st century. To manage for the reintroduction of fire it is critical that we understand the interactions between fire and forest biota in recently fire-suppressed forests.
In Chapter 2, I studied the formation ...
Printed Dot Quality In Response To Doctor Blade Angle In Gravure Printing, 2018 Western Michigan University
Printed Dot Quality In Response To Doctor Blade Angle In Gravure Printing, Bilge N. Altay, Alexandra Pekarovicova, Paul D. Fleming
The Hilltop Review
Doctor blade is one of the critical machine part of the gravure printing press that controls the amount of ink transfer on the substrate. The angle of the blade can be varied; however, an improper angle may cause major problems. In this study, the doctor blade angle was positioned at three different level to address its effect on the printed dot quality. Print trials were made on a web-fed gravure press at the speed of 650 ft./min. A high-resolution overhead camera was used to analyze the key dot attributes. The results showed that measuring only the density of printed ...
Baldcypress And Black Willow Growth Response To Contrasting Flood Regimes, Climate, And Competition, In The Atchafalaya Basin, Louisiana, 2018 Louisiana State University and Agricultural and Mechanical College
Baldcypress And Black Willow Growth Response To Contrasting Flood Regimes, Climate, And Competition, In The Atchafalaya Basin, Louisiana, Alicia Louise Mcalhaney
LSU Master's Theses
Wetlands are dynamic ecosystems distinguished by their dependence on fluctuations of hydrologic influence. Although it is generally accepted that that flooding is a strong influence on growth, and that effects vary depending on whether water is stagnant or flowing, several aspects of flood characteristics and several tree species remain poorly investigated. One source of variability that has not been investigated is how flooding, climate, and competition among trees interact to control growth of individual trees. The objective of this study was therefore to 1) investigate effects of temporally varying hydrology and climate on growth of baldcypress and black willow trees ...
Characterization Of Sites For Native Herbaceous Understory Restoration In West Gulf Coast Longleaf Pine (Pinus Palustris) Savannas, 2018 Stephen F Austin State University
Characterization Of Sites For Native Herbaceous Understory Restoration In West Gulf Coast Longleaf Pine (Pinus Palustris) Savannas, Brooke Mccalip
Electronic Theses and Dissertations
Longleaf pine (Pinus palustris) savannas were once dominant in East Texas and parts of western and central Louisiana. Native understory species have since been removed or reduced by exotic plants that were introduced and from the reduction in the frequency of both wild and prescribed fires. A diverse layer of understory species can still be seen today, but not often in the historical savanna setting that is desirable in longleaf pine ecosystems. This project aimed to identify site characteristics associated with longleaf ecosystems that support a dense, herbaceous understory with little to no midstory cover.
A total of 65 plots ...
Perma/Culture: Imagining Alternatives In An Age Of Crisis By Molly Wallace And David Carruthers, 2018 University of Miami
Perma/Culture: Imagining Alternatives In An Age Of Crisis By Molly Wallace And David Carruthers, Bryant Scott
Review of Molly Wallace and David Carruthers' Perma/Culture: Imagining Alternatives in an Age of Crisis.
Landscape Drivers Of Recent Fire Activity (2001- 2017) In South-Central Chile, 2018 Montana State University-Bozeman
Landscape Drivers Of Recent Fire Activity (2001- 2017) In South-Central Chile, David B. Mcwethy, Aníbal Pauchard, Rafeal García, Andrés Holz, Mauro E. Gonzales, Thomas T. Veblen, Julian Stahl, Bryce Currey
Geography Faculty Publications and Presentations
In recent decades large fires have affected communities throughout central and southern Chile with great social and ecological consequences. Despite this high fire activity, the controls and drivers and the spatiotemporal pattern of fires are not well understood. To identify the large-scale trends and drivers of recent fire activity across six regions in south-central Chile (~32–40° S Latitude) we evaluated MODIS satellite-derived fire detections and compared this data with Chilean Forest Service records for the period 2001–2017. MODIS burned area estimates provide a spatially and temporally comprehensive record of fire activity across an important bioclimatic transition zone between ...
Flow Regime Influences On Stream And Riparian Soil Carbon Dynamics In The Ozark Highlands And Boston Mountains Of Arkansas, 2018 University of Arkansas, Fayetteville
Flow Regime Influences On Stream And Riparian Soil Carbon Dynamics In The Ozark Highlands And Boston Mountains Of Arkansas, Allyn Dodd
Theses and Dissertations
The natural flow regime exerts primacy over lotic ecosystem patterns and processes. However, little work has examined the influence of flow regime on instream and riparian carbon (C) dynamics in minimally-impacted, temperate forested systems. To date, most research efforts have focused on characterizing C movement and transformations across biomes and land use categories; however, flow regime represents an overlooked, finer level of detail that may drive differences in ecosystem function. My dissertation objective was to measure C fixation and movement within and across multiple environmental spheres (e.g. within stream channels, between stream surfaces and the atmosphere, and from riparian ...
Land Cover And Use Change In Utah: A Comparison Of Field- Vs. Aerial Image-Based Observations, 2018 Utah State University
Land Cover And Use Change In Utah: A Comparison Of Field- Vs. Aerial Image-Based Observations, Jennifer Lynn Bakken
All Graduate Theses and Dissertations
The Image-based Change Estimation program (ICE) was developed by the US Forest Service Forest Inventory & Analysis (FIA) program and the Geospatial Technology Applications Center in response to the 2014 Farm Bill calling for more timely and accurate estimates of land cover and use change. ICE monitors change throughout the US on a state by state basis by assessing each FIA plot using high resolution imagery from two dates in time. In the western US, FIA measures 10% of the plots each year to report on status, trends, and sustainability of our Nation’s forests. However, this 10 year cycle misses ...
Air Pollution And Visitation At U.S. National Parks, 2018 Iowa State University
Air Pollution And Visitation At U.S. National Parks, David A. Keiser, Gabriel E. Lade, Ivan Rudik
Hundreds of millions of visitors travel to U.S. national parks every year to visit America’s iconic landscapes. Concerns about air quality in these areas have led to strict, yet controversial pollution control policies. We document pollution trends in U.S. national parks and estimate the relationship between pollution and park visitation. From 1990 to 2014, average ozone concentrations in national parks were statistically indistinguishable from the 20 largest U.S. metropolitan areas. Further, relative to U.S. cities, national parks have seen only modest reductions in days with ozone concentrations exceeding levels deemed unhealthy by the U.S ...
Physiological Responses Of Species To Microclimate Help Explain Population Dynamics Along Succession In A Tropical Dry Forest Of Yucatan, Mexico, Paula C. Jackson, José Luis Andrade, Casandra Reyes-García, Olivia Hernández-González, Thomas C. Mcelroy, Roberth Us-Santamaría, José Luis Simá, Juan Manuel Dupuy
We investigated relationships between population dynamics and microclimate, physiology, and the degree of mycorrhizal colonization, for three species (Piscidia piscipula L.(Sarg.)) (Fabaceae), Bunchosia swartzianaGriseb. (Malpighiaceae) and Psidium sartorianum (Bergius) Nied. (Myrtaceae)) of a tropical sub deciduous forest in Yucatan, Mexico that were growing in plots of different successional ages. We hypothesized that abundance and persistence were related to increased plasticity in CO2assimilation. We found that Piscidia piscipula had greater abundance in intermediate plots (18 to 21 years), presented higher levels of plasticity in CO2 assimilation (greater variability among individuals, plots, and seasons), presented the highest CO2 assimilation rates, and ...
Developing A Coastal Gis Model Of Sri Lanka To Pinpoint Areas At Risk Of Tsunamis, 2018 Humboldt State University
Developing A Coastal Gis Model Of Sri Lanka To Pinpoint Areas At Risk Of Tsunamis, John E. Dellysse, Buddhika D. Madurapperuma
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Humboldt State University
No abstract provided.
Survey And Map Distribution Of English Ivy (Hedera Helix L.) At Patrick's Point State Park, California, 2018 Humboldt State University
Survey And Map Distribution Of English Ivy (Hedera Helix L.) At Patrick's Point State Park, California, John W. Cortenbach, Buddhika D. Madurapperuma
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Humboldt State University
No abstract provided.
Soil Conservation Efforts Affecting And Implementations To Help Tree Growth In Iceland, 2018 Embry-Riddle Aeronautical University
Soil Conservation Efforts Affecting And Implementations To Help Tree Growth In Iceland, Justin Lawlor
The purpose of this research was to understand and project the opinions of the public in Iceland on soil conservation and current efforts. The issue of soil erosion dates back to settlement around 1,100 years ago. The loss of vegetation from deforestation and grazing exposes the land to the effects of wind, water, and other devastating elements, leading it to erode away. The Soil Conservation Service of Iceland (SCSI) was developed to combat this issue over 100 years ago with efforts including planting trees, promoting safe farming practices, and replenishing the land. Interviews were conducted with various individuals, including ...
Nature Abounds: Term Paper, 2018 Union College
Nature Abounds: Term Paper, Ricky Verre
Nature Abounds is a non-profit organization that is working internationally to spread the word about climate change and all of its effects that we are currently experiencing. Climate change is one of the most pressing issues of our time and any chance at reversing its erratic effects requires immediate action. Nature Abounds employs numerous programs that serve to increase the general public's knowledge of the climate related issues at hand, as well as to have a positive environmental impact in order to increase global environmental health. The organization has programs that focus on biodiversity, water quality monitoring, forest preservation ...
Timber Talk, Vol. 56, No. 2, June 2018, 2018 University of Nebraska - Lincoln
Timber Talk, Vol. 56, No. 2, June 2018
Timber Talk: Nebraska Forest Industry Newsletter
In This Edition of Timber Talk
- Lumber Market Reports
- Hardwood Lumber Prices (green lumber, kiln-dried lumber, green pallet lumber, and green crossties)
- The Urban Wood Network: Bringing the Value of Urban Wood to Light
- Firewood Regulations Impacting Nebraska Firewood Producers
- Nebraska Legislature to Conduct Redcedar Study
- Nebraska Forest Industry Spotlight: Between Two Trees (Brady, NE)
- Woody Biomass Heating Assistance Available
- SAVE THE DATE: Walnut Timber Management and Harvest Workshop (Plattsmouth, NE)
- Trading Post
- Timber Sales
- Ponderosa Pine (Sheridan County, NE)
If there is information or subject matter which you would like to see included in future editions of Timber Talk ...
I-Tree Landscape: A Case Study In Best Practices For Education And Dissemination For Multiple User Groups, Margaret M. Abood
The urban ecosystems we inhabit provide essential ecosystem services to humans, such as air pollution removal, as well as effective means to avoid costs related to urban development, such as stormwater treatment. A better understanding of the value of ecosystem services and their spatial distribution in urban areas is vital to widespread, wholistic understanding of the relationship of environmental, economic, and social conditions. As such, it should be a component of education in grades 6-12, college, and continuing education. i-Tree Landscape is a free, online model developed by the USDA Forest Service in which users can select a geography (i ...
A Quantitative Analysis Of The Effects Of Urbanization, Mesophication And Prescribed Burns On Oak Woodlands In The Chicago Metropolitan Area, 2018 Augustana College, Rock Island Illinois
A Quantitative Analysis Of The Effects Of Urbanization, Mesophication And Prescribed Burns On Oak Woodlands In The Chicago Metropolitan Area, Chad Populorum
Celebration of Learning
Urban expansion has had devastating impacts on forest ecosystems, especially within the past century. Human attempts to dominate nature have diminished natural disturbance regimes, which have maintained the biodiversity and historic composition of these ecosystems. Fires have been a prominent force in maintaining the structure of oak, hickory and other heliophytic (sun loving and fire-adapted) forest systems. Human induced fire suppression has led to mesophication across North America. Mesophication is the transition from drier conditions with open canopies to wetter conditions with closed canopies. These new conditions decrease the survival rates of these important species and begin to favor mesophytic ...
Uncertainty Assessment In Biomass Estimation, 2018 University of San Francisco
Uncertainty Assessment In Biomass Estimation, Isaac Lisle
Radical Social Ecology As Deep Pragmatism: A Call To The Abolition Of Systemic Dissonance And The Minimization Of Entropic Chaos, Arielle Brender
Student Theses 2015-Present
This paper aims to shed light on the dissonance caused by the superimposition of Dominant Human Systems on Natural Systems. I highlight the synthetic nature of Dominant Human Systems as egoic and linguistic phenomenon manufactured by a mere portion of the human population, which renders them inherently oppressive unto peoples and landscapes whose wisdom were barred from the design process. In pursuing a radical pragmatic approach to mending the simultaneous oppression and destruction of the human being and the earth, I highlight the necessity of minimizing entropic chaos caused by excess energy expenditure, an essential feature of systems that aim ...
Building Resistance And Resilience: Regeneration Should Not Be Left To Chance, 2018 Utah State University
Building Resistance And Resilience: Regeneration Should Not Be Left To Chance, James N. Long, Marcella Windmuller-Campione, R. Justin Derose
Wildland Resources Faculty Publications
Contemporary forest planning has tasked managers with developing goals associated with resistance and resilience. In practice, silviculturists use forest structure and tree species composition to characterize goals and desired future conditions, write prescriptions, and monitor outcomes associated with resistance and resilience. Although rarely discussed in the exploding literature relating to forest resistance and resilience, silvicultural regeneration methods are important and underutilized tools to meet these goals. We propose alternative silvicultural systems for building resistance and resilience to two common large-scale bark beetle disturbance agents in the Intermountain West, United States: mountain pine beetle (Dendroctonus ponderosae Hopkins) and spruce beetle (Dendroctonus ...