Assessing The Urban Forest Values An Institutional Sector Approach, 2015 Texas Southern University
Assessing The Urban Forest Values An Institutional Sector Approach, Anthony M. Rodriguez Ph.D.
Anthony M Rodriguez Ph.D.
The presentation is an aspect of an ongoing study that demonstrates and maps the urban forest values. Using ARCGIS the paper will model social change and the potential for expanding or not the natural environment focusing on the values and the projected change based on the sectors position in reference to sustainability and more specifically the urban forest as an artifact to foster positive spatial change.
Improving Alternate Lignin Catabolite Utilization Of Ligab From Sphingobium Sp. Strain Syk-6 Through Site Directed Mutagenesis, Kevin P. Barry, Erin F. Cohn, Abraham Ngu, Erika A. Taylor
Erika A. Taylor, Ph.D.
Protocatechuate 4,5-dioxygenase (LigAB) catalyzes dioxygenation of multiple lignin derived aromatic compounds—such as protocatechuate (PCA), gallate (GA) and 3-O-methyl gallate (3OMG)—with decreasing proficiency as the molecule size increases. We predicted that phenylalanine-103 of the α subunit (Phe103α) controls substrate specificity through interaction with the C5-funtionality of bound substrates, and mutagenesis would enhance GA and 3OMG catalysis. LigAB with Phe103α mutations (F103 V, F103T and F103H) displayed enhanced catalytic efficiency for dioxygenation of 3OMG, with mutants displaying 12- to 31-fold increases in View the MathML source, making these mutant enzymes more active with 3OMG than its native dioxygenase (DesZ ...
Carbon Storage Potential Of Windbreaks On Agricultural Lands Of The Continental United States, 2015 William University of Nebraska-Lincoln
Carbon Storage Potential Of Windbreaks On Agricultural Lands Of The Continental United States, William Ballesteros Possu
Dissertations & Theses in Natural Resources
Agricultural production systems face major challenges under climate change scenarios in terms of expected negative impacts on productivity and persistence of the crops. Greenhouse gases from agriculture continue to rise although not as fast as from other fossil fuel-based human activities. Windbreaks perform several ecosystems functions that improve the local and regional capacity of crop systems to increase yields and offer environmental services by minimizing the negative effects of extreme weather events. Windbreaks also represent an important means of mitigating greenhouse gas emissions. This is predominantly accomplished by the windbreak trees storing carbon (C) in their above and belowground woody ...
Scaling From Single-Point Sap Velocity Measurements To Stand Transpiration In A Multi-Species Deciduous Forest: Uncertainty Sources, Stand Structure Effect, And Future Scenarios Impacts, 2015 University of New Hampshire - Main Campus
Scaling From Single-Point Sap Velocity Measurements To Stand Transpiration In A Multi-Species Deciduous Forest: Uncertainty Sources, Stand Structure Effect, And Future Scenarios Impacts, Virginia Hernandez-Santana, Adan Hernandez-Hernandez, Matthew A. Vadeboncoeur, Heidi Asbjornson
Earth Systems Research Center
A major challenge in studies estimating stand water use in mixed-species forests is how to effectively scale data from individual trees to the stand. This is the case for forest ecosystems in the northeastern USA where differences in water use among species and across different size classes have not been extensively studied, despite their relevance for a wide range of ecosystem services. Our objectives were to assess the importance of different sources of variability ontranspiration upscaling and explore the potential impacts of future shifts in species composition on forest water budget. We measured sap velocity in five tree species ...
Cranberry Lake Biological Station Research Symposium, Session A, 2015 SUNY College of Environmental Science and Forestry
Cranberry Lake Biological Station Research Symposium, Session A, Suny College Of Environmental Science And Forestry
Cranberry Lake Biological Station
Ecological Monitoring and Biodiversity Assessment (EFB202) is the one of the keystone courses in the Environmental and Forest Biology curriculum. Students enrolled in this immersive course live at the Cranberry Lake Biological Station for three weeks. During the first two weeks of the course, students study a wide variety of taxonomic groups of organisms, and are introduced to a broad range of field, laboratory and analytical methods. Students then complete a group research project during the third and final week of the course. The research projects require proficiency in field sampling methods, basic experimental design and statistical analysis, and the ...
Impact Of Using Different Stocking Rates Of Goats Under Pine Plantation On Plant Species Occurrence And Animal Productivity, Anthony S. Kumi, India Howard, Ronald C. Smith, Nar Gurung, Alphonso Elliott
Professional Agricultural Workers Journal
The study assessed the impact of using different stocking rates of goats under pine plantation on plant species occurrence and animal productivity. It was conducted on an 11 year-old loblolly pine plantation site in Epes, Alabama from July to October 2011. Thirty-six Kiko crossbred male goat kids of 4 to 5 months of age were assigned to different stocking rates, namely, low (4 goats/acre), medium (8 goats/acre), and high (12 goats/acre) with three replications each. Forage composition, animal daily gain (ADG) and blood urea nitrogen (BUN) were monitored. Bahia grass (Paspalum notatum) was the most dominant ...
Negative Feedbacks On Bark Beetle Outbreaks: Widespread And Severe Spruce Beetle Infestation Restricts Subsequent Infestation, 2015 University of Colorado Boulder
Negative Feedbacks On Bark Beetle Outbreaks: Widespread And Severe Spruce Beetle Infestation Restricts Subsequent Infestation, Sarah Hart, Thomas T. Veblen, Nathan Mietkiewicz, Dominik Kulakowski
University Libraries Open Access Fund Supported Publications
Understanding disturbance interactions and their ecological consequences remains a major challenge for research on the response of forests to a changing climate. When, where, and how one disturbance may alter the severity, extent, or occurrence probability of a subsequent disturbance is encapsulated by the concept of linked disturbances. Here, we evaluated 1) how climate and forest habitat variables, including disturbance history, interact to drive 2000s spruce beetle (Dendroctonus rufipennis) infestation of Engelmann spruce (Picea engelmannii) across the Southern Rocky Mountains; and 2) how previous spruce beetle infestation affects subsequent infestation across the Flat Tops Wilderness in north- western Colorado, which ...
Fishing For A Sustainable Future: Aquaponics As A Method Of Food Production, 2015 Fordham University
Fishing For A Sustainable Future: Aquaponics As A Method Of Food Production, Richard Ramsundar
Student Theses 2015-Present
This thesis compares and explains the advantages aquaponics farming has over modern industrial intensive farming. Through a comparison natural capital usage, conservation, recycling and cost, the thesis advocates for the expansion of aquaponics usage in urban settings. The thesis also explains the history of intensive farming and aquaponics in America, the science of how aquaponics operates, the economic and environmental costs of modern intensive farming versus aquaponics farming, and the social implications of aquaponics. Lastly, I propose a policy that reallocates farm subsidies by modifying the Farm Bill. Then I propose policies that support creating a new standard of farm ...
Assessment Of Pityophthorus Juglandis Colonization Characteristics And Implications For Further Spread Of Thousand Cankers Disease, 2015 University of Tennessee - Knoxville
Assessment Of Pityophthorus Juglandis Colonization Characteristics And Implications For Further Spread Of Thousand Cankers Disease, Jackson Audley
Nonnative, invasive forest insect pests are a significant threat to the health of global forest resources. Thousand cankers disease, a recently described disease threatening walnuts, is the result of an invasive insect-pathogen complex in which the walnut twig beetle (Pityophthorus juglandis Blackman) is a vector to the associated fungal pathogen, Geosmithia morbida. Both are native to the southwestern U.S. into northern Mexico, however, have been found well beyond their historic range, and now threaten black walnut (Juglans nigra) in the eastern U.S. Beetles have likely been spread via the transport of infested walnut logs.
The goal of this ...
White Spruce (Picea Glauca), Moose (Alces Alces) And The Origin Of A Zootic Disclimax Community On Isle Royale, 2015 Northern Michigan University
White Spruce (Picea Glauca), Moose (Alces Alces) And The Origin Of A Zootic Disclimax Community On Isle Royale, Stephen C. Caird
All NMU Master's Theses
Understory herbivory combined with canopy loss alters trajectories of forest succession, and in extreme cases may produce novel landscapes dominated by the groundcover layer. I investigated the response of woody species to savannas which have emerged in Isle Royale National Park as a result of moose herbivory. I used dendrochronological methods and microsite plots to describe the spatial, temporal, and competitive responses of white spruce (Picea glauca), a non-palatable species, to the savanna environment. Most tree species had lower densities in savannas, however bird-dispersed species mountain ash (Sorbus decora) and chokecherry (Prunus virginiana) were increasing in older savannas. White spruce ...
Exploration Of Spatial And Temporal Changes In Trophic Status Of Lakes In The Northern Temporal Forest Biome Using Remote Sensing, 2015 The University of Western Ontario
Exploration Of Spatial And Temporal Changes In Trophic Status Of Lakes In The Northern Temporal Forest Biome Using Remote Sensing, Aleksey Paltsev
University of Western Ontario - Electronic Thesis and Dissertation Repository
There is a critical need for detailed surveys of lakes covering large spatial (>100 km2) and temporal scales (decades) to determine if there is an increase in the magnitude and frequency of phytoplankton blooms. Remote sensing was used to: (1) develop a regression model that relates chlorophyll a (chl-a) as a proxy of lake phytoplankton biomass to Landsat TM and ETM+ optical reflectance (r2=0.85, p
How Does The Exploitation And Degradation Of Finite Natural Resources By Industrial Oil Producers Effect Our Future Planetary Environment?, Zachary J. King Mr.
Symposium of Student Scholars
26 March 2015
The purpose of this presentation is to communicate content of the reports given by credible institution on the degradation and exploitation of finite natural resources by corporate institutions, for short term financial gain, and how it will effect the future planetary environment. Methods used in obtaining this research range from point source observation directly from oil spills in the Gulf or pipe leaks in the Mid-West, to analytical and numerical data quantifications gathered over a period of two decades. This presentation encompasses a wide scope of information concerning the way ...
Agricultural Assessment: Pecan Orchard Feasibility Study, 2015 Stephen F. Austin State University
Agricultural Assessment: Pecan Orchard Feasibility Study, Brad Henley
Undergraduate Research Conference
East Texas has predominantly been categorized historically as a forestry and timber management region. The nearest region to expectedly encounter viewing a large number of properties containing the growth of nut-bearing tree plantations, better known as orchards, is the Hill Country or South Texas Regions. During 2012, I witnessed a rural real estate transaction between an East Texas timber landowner and successful almond orchard farmer. The almond farmer had no previous experience with the practice and management of Texas loblolly pine plantations; however, he had interest in diversifying his real estate investment portfolio to include a pine plantation offering a ...
Hickory Creek Orchard Feasibility Study, 2015 Stephen F Austin State University
Hickory Creek Orchard Feasibility Study, Brad Henley
Undergraduate Research Conference
Does land in East Texas host desirable soil types for developing large acreage into nut-bearing orchards?
Resin Production In Natural And Artificial Red-Cockaded Woodpecker Cavity Trees, 2015 Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University
Resin Production In Natural And Artificial Red-Cockaded Woodpecker Cavity Trees, David Kulhavy, Kimberly B. Rozelle, William G. Ross, Daniel Unger, Richard N. Conner
Resin flow was measured in red-cockaded woodpecker (Picoides borealis Vieillot) clusters in longleaf pine (Pinus palustris Mill.) in the southern region of the Angelina National Forest, Texas. Resin flow (ml) at 1.4 m height over 24 hrs was measured from one 2.5 cm punch through the phloem between 0700 and 1000 hrs from March 1999 to September 2000, for a total of 9 measurements per tree. Resin was sampled in naturally active cavity trees, artificial (insert) active, natural inactive, artificial inactive and control pines (84 sample trees). Resin flow pattern was significantly different during the year, but not ...
Quantifying Land Cover Change Due To Petroleum Exploration And Production In The Haynesville Shale Region Using Remote Sensing, 2015 Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University
Quantifying Land Cover Change Due To Petroleum Exploration And Production In The Haynesville Shale Region Using Remote Sensing, Daniel Unger, I-Kuai Hung, Kenneth W. Farrish, Darinda Dans
The Haynesville Shale lies under areas of Louisiana and Texas and is one of the largest gas plays in the U.S. Encompassing approximately 2.9 million ha, this area has been subject to intensive exploration for oil and gas, while over 90% of it has traditionally been used for forestry and agriculture. In order to detect the landscape change in the past few decades, Landsat Thematic Mapper (TM) imagery for six years (1984, 1989, 1994, 2000, 2006, and 2011) was acquired. Unsupervised classifications were performed to classify each image into four cover types: agriculture, forest, well pad, and other ...
The Effects Of Water Quality On The Habitat Use Of Tiger Salamanders In Prairie Wetlands, 2015 University or Minnesota, Morris
The Effects Of Water Quality On The Habitat Use Of Tiger Salamanders In Prairie Wetlands, Broc S. Kokesh
Undergraduate Research Symposium 2015
The tiger salamander (Ambystoma tigrinum) is a wide-ranging amphibian of North America common to prairie wetlands. Nevertheless, little is actually known about their ecology, including what water quality conditions are desirable and what effects water quality may have on established populations. In this study, I assessed how water quality parameters affect salamander survival and microhabitat use in the prairie pothole region of Western Minnesota. My goal was to assess if differences in water quality between ponds act as potential indicators of microhabitat preferences among salamander populations. I took water quality samples and trapped salamanders from four ponds with differing pH ...
Things Fall Apart? The Political Ecology Of Forest Governance In Southern Nigeria, 2015 University of Connecticut - Storrs
Things Fall Apart? The Political Ecology Of Forest Governance In Southern Nigeria, Prakash Kashwan
Journal of Ecological Anthropology
No abstract provided.
Post-Dispersal Seed Fate Of Ocotea Floribunda (Lauraceae) In Monteverde, Costa Rica, 2015 Lake Forest College
Post-Dispersal Seed Fate Of Ocotea Floribunda (Lauraceae) In Monteverde, Costa Rica, Luis Carlos Beltrán ’15
Ocotea floribunda (Lauraceae) is a Neotropical, bird-dispersed, canopy tree species commonly found in Monteverde, Costa Rica. The post-dispersal fate of seeds was studied to determine how regurgitation by avian frugivores and microhabitat characteristics affect seed removal through a Giving-Up Density (GUD) experiment. The fate of removed seeds was assessed through a concurrent seed-tagging experiment. An on-site camera trap revealed that agoutis (Dasyprocta punctata) remove regurgitated seeds O. floribunda in the open site. Microhabitat characteristics and seed treatment had no significant effect on seed removal rates. Regurgitated seeds were buried in the seed-tagging experiment. Seed infestation rates were assessed following the ...
Historical Common Names Of Great Plains Plants, With Scientific Names Index. Volume Ii: Scientific Names Index, 2015 University of Nebraska-Lincoln
Historical Common Names Of Great Plains Plants, With Scientific Names Index. Volume Ii: Scientific Names Index, Elaine Nowick
Containing thousands of entries of both vernacular and scientific names of Great Plains plants, the literature that informs this exhaustive listing spans nearly 300 years. Author Elaine Nowick has drawn from sources as diverse as Linnaeus, Lewis and Clark, and local university extension publications to compile the gamut of practical, and often fanciful, common plant names used over the years. Each common name is accompanied by a definitive scientific name with references and authority information. Interspersed with scientifically-correct botanical line drawings, the entries are written in standard ICBN format, making this a useful volume for scholars as well as lay ...