Digital Commons Network^™

Performance And Locus Of Control Of Small Farmers In Yunnan Province, Alan Mcdermott

IGC Proceedings (1977-2023)

No abstract provided.

Anti‐Microbial Activities Of Root Extracts Of Cichorium Intybus L., Quanzhen Wang, Tianming Hu, Yamei Xu

IGC Proceedings (1977-2023)

No abstract provided.

Promising Features Of The Legume Species Bituminaria Bituminosa As A Novel Forage Plant And For Pharmaceutical Purposes, L. Pecetti, A. Tava, E. Piano, E. Biazzi, S. Esposti, A. Ursino, B. Pintus

IGC Proceedings (1977-2023)

No abstract provided.

Pasture Management For Conservation Of Multipurpose Plants In Italian Mountains, Andrea Pardini, V. Pratesi, R. Tallarico

IGC Proceedings (1977-2023)

No abstract provided.

Students And Farmers Planning And Implementing Grass Based Agroecologic Dairy Systems As A Regular Statewide Program: The Development Of Participative Methodology Responsible For 622 Family Farm Projects, W. Murphy, A. Schmitt, F. Busnardo, J. Ross, L. Assing, A. Nacimento

IGC Proceedings (1977-2023)

No abstract provided.

Australian Sheep Farmers Are Increasing Pasture Utilisation And Reducing Risk With Easy‐To‐Use Tools From Lifetimewool, M. Curnow, J. Whale, D. Gordon

IGC Proceedings (1977-2023)

No abstract provided.

An Evolving Model For A Livestock And Fodder Development Project Involving The Poverty Stricken Communities Of The Eastern Cape Province, South Africa, P. W. Conradie, D. Swart, B. King, M. Macanda, U. Gulwa, G. Jordaan

IGC Proceedings (1977-2023)

No abstract provided.

Reconstructing 1856-7 California Mining Patterns From Placer Gold Recovered From The Wreck Of The Ss Central America, Kathryn Ruth Vonsydow

Electronic Theses, Projects, and Dissertations

The discovery of the SS Central America 1857 shipwreck site provides a time capsule that can be used to address questions about the spatial and temporal patterns of placer mining in California during the peak of the gold rush. Samples of placer gold in the collections of museums and private individuals can have uncertain pedigree due to labeling issues and alterations by cleaning and curatorial processes. However, placer gold from the 1857 shipwreck could only have come from the Mother Lode Country of California, as no other gold districts had yet been found in western North America. I compared the …

Spatial Analyses Of Gray Fossil Site Vertebrate Remains: Implications For Depositional Setting And Site Formation Processes, David Carney

Electronic Theses and Dissertations

This project uses exploratory 3D geospatial analyses to assess the taphonomy of the Gray Fossil Site (GFS). During the Pliocene, the GFS was a forested, inundated sinkhole that accumulated biological materials between 4.9-4.5 mya. This deposit contains fossils exhibiting different preservation modes: from low energy lacustrine settings to high energy colluvial deposits. All macro-paleontological materials have been mapped in situ using survey-grade instrumentation. Vertebrate skeletal material from the site is well-preserved, but the degree of skeletal articulation varies spatially within the deposit. This analysis uses geographic information systems (GIS) to analyze the distribution of mapped specimens at different spatial scales. …

Isotopic Analysis And Mobility Mapping Of Mammuthus Columbi From The Mammoth Site In South Dakota, Matthew Harrington

Electronic Theses and Dissertations

The Mammoth Site in Hot Springs, South Dakota preserves a unique death assemblage of sub-adult and adult male Columbian mammoths (Mammuthus columbi). Extensive work on the site has led to a detailed understanding of the taphonomy of the assemblage; yet the life histories and ecology of these mammoths remain relatively unknown. Tooth enamel from four Mammoth Site mammoth individuals were bulk sampled with one of the individuals (MSL 742) also serially micro-sampled for 𝛿¹³C, 𝛿¹⁸O, and ⁸⁷Sr/⁸⁶Sr. Isotopic results indicate that MSL 742 remained within the southern and western Black Hills …

Biochar Applications To The Remediation Of Lead And Polychlorinated Biphenyl Contaminated Water, Victory Itua Igberase

Theses and Dissertations

This study investigated the performance of biochar materials as adsorbents to remove Pb and polychlorinated biphenyl (PCB) in aqueous solutions. Batch adsorption and column experiment packed with biochar and geomaterials (pumice) in 1:1 volume ratio was evaluated to address the efficacy of biochar in removing Pb while only batch adsorption was employed for PCB removal with biochar materials. Overall, PT biochars performed the best (42–53 mg g−1) followed by BE biochars (10–32 mg g−1) and AB biochars (17–27 mg g−1) while high temperature biochars were favored in terms of maximum Pb adsorption capacity. Column Pb breakthrough showed similar results, with …

Soil Chemistry Modification By Guinea Grass In Semi-Arid Soils: A Litter Mediated Positive Feedback, Vanessa Elizabeth Thomas

Theses and Dissertations

Nutrients are a key component of healthy soils. Their composition plays an important role in plant growth through nutrient cycling and directly influences the functioning of plant communities in both agricultural and natural ecosystems. Shifts in macronutrients such as phosphorus and nitrogen may be initiated by invasive growth as a driver for competition with native plants. The goal of this study is to explore the plant soil feedback in an exotic invasive plant, Guinea grass (Pancium maximum), an invasive bunch grass originally from Africa, across different habitat types in the Lower Rio Grande Valley (LRGV). To determine a positive plant …

Differences In Erosion Rates And Elevation Among Natural, Living And Hardened Shorelines In Mississippi, And Alabama, Brittany Juneau

Honors Theses

Shoreline erosion is a phenomenon that currently threatens both natural ecosystems and human settlements along the coast. With trends showing gradual sea level rise as a result of climate change, erosion is becoming an increasing threat to these communities. This research aims to provide more insight into the relationship between shoreline morphology and three shoreline protection techniques: natural marsh, living shoreline, and hardened structures. Six sites along the Alabama and Mississippi coast that had all three shoreline types were evaluated to determine what the average erosion rate and slope was for each shoreline. Erosion rates were calculated by image analysis …

An Exploration Of Passive Seismology: Applying Seismic Methods For Traditional And Exotic Source Characterization, David Lewis Guenaga

Open Access Theses & Dissertations

As seismology continues to develop both theoretical and observational, so does its ability to be used in various applications. In this Dissertation, I develop and apply new approaches to five distinct projects (chapters 2-6), leveraging large and small high-quality targeted datasets to decipher fundamental and applied processes utilizing the full seismic wavefield. The first chapter introduces this Dissertation by providing broad context, continuity, and technical information about each of the five projects. Specifically, chapter 2 explores a seismic sensorâ??s ability to detect opera in Oak Ridge National Laboratory, TN, using a misfit power spectral density detector. Chapter 3 outlines work …

The Effects Of Prescribed Burning On Soil Water Infiltration Rates And Other Select Soil Physical And Chemical Properties In East Texas, Cassady Pennington Dunson, Brian P. Oswald, Kenneth Farrish, Tyson Hart

Electronic Theses and Dissertations

This study focused on whether prescribed burning affects soil physical and chemical properties, especially water infiltration, in Western Gulf Coast forests. Soil water infiltration rates were measured 1) pre-burn (before the fire), 2) post-burn (one month after the fire), and 3) at vegetation green-up (three months after the fire). Soil samples were also collected to determine the effects of prescribed burning on soil pH, bulk density, particle density, pore space, soil strength, O-horizon weight and depth (organic matter), water stable aggregates, and soil fertility. This project was conducted on two different burn intervals. The National Forests and Grasslands of Texas …

The Battle Over Cattle: Livestock Management In A Changing Rural Landscape, Monique Salomon, Robert Fincham, Terry Everson

IGC Proceedings (1977-2023)

No abstract provided.

Recent Innovations In Education‐Extension‐Research Networks Of Industrialised Agricultures, Mark Paine, Marianne Cerf

IGC Proceedings (1977-2023)

No abstract provided.

Llama De Ayopaya: Towards Marketing Of High Quality Fine Fibre In The Bolivian Andes, M. Siegmund‐Schultze, J. Delgado, A. Stemmer, A. Markemann, A. Valle Zárate

IGC Proceedings (1977-2023)

No abstract provided.

Tropical Forages For Monogastric Animals: Enhancing Smallholders Competitiveness In Local And Emerging Markets, Michael Peters, D. White, L. S. Muñoz, P. Sarria, N. Vivas, F. Holmann, M. Lundy, T. Oberthur, P. Lentes, A. Schmidt, Martin Mena, S. Fujisaka

IGC Proceedings (1977-2023)

No abstract provided.

Sustaining Pastoral Linkages To High‐Value Livestock Markets Through Collective Action And Public‐Private Partnerships: A Case Study From Southern Ethiopia, S. Desta, D. Layne Coppock, G. Gebru, S. Tezera, L. Gizachew

IGC Proceedings (1977-2023)

No abstract provided.

Market Trends For Organic Or Low Input Foods From Marginal Pastures, F. Longhi, Andrea Pardini

IGC Proceedings (1977-2023)

No abstract provided.

Assessing The Impact Of Organic Versus Conventional Agricultural Management On Soil Hydraulic Properties In A Long-Term Experiment, Abdelrahman Alfahham, Matthew T. Amato, Emmanuel Omondi, Daniel Giménez, Alain F. Plante

Agricultural and Environmental Sciences Faculty Research

Investigating the effects of various agricultural management systems on soil hydraulic properties in long-term field experiments allows farmers to evaluate their efficacy in mitigating the effects of droughts and floods, which are expected to intensify in the coming decades. This study's main objective was to quantify soil structural and hydraulic properties in plots under organic manure, organic leguminous, and conventional agricultural management and related tillage practices at Rodale Institute's Farming Systems Trial. Soil cores were collected at depths of 0–10, 10–20, and 20–30 cm and analyzed for soil water retention, saturated hydraulic conductivity (Ksat), soil organic C (SOC), bulk density, …

Right Side Up: Payment For Ecosystem Services On Privately Owned Grasslands In Nebraska, Kyle Martens

School of Natural Resources: Dissertations, Theses, and Student Research

Grasslands are an important ecological and economic resource in the United States. As part of a natural system, these landscapes can provide income for ranching operations and employment in rural communities; habitat for grassland plants, animals, and migratory species; and offer other services not always readily observed such as improved soil health, clean water, and carbon sequestration. Despite the overarching benefits, the conversion of grasslands to other uses remains widespread throughout much of the remaining Great Plains ecosystem.

Shifting from livestock ranching to another land use often reflects a tipping point. This occurs when the alternative land use is perceived …

Using Kangaroos To Produce Low‐Emission Meat, George R. Wilson, Melanie Edwards

IGC Proceedings (1977-2023)

No abstract provided.

Institutional Innovations Of The Grassland Household‐Contract‐Responsibility System: A Study Of The Household‐Allied Operation System Of Xilinguole League, Inner Mongolia, Guanghua Qiao, Zhihua Xiao, Yanli Tian, Haichun Wang, Kaiguang Huang

IGC Proceedings (1977-2023)

No abstract provided.

From Margin Lands To Local Meat: Innovation Networks And Functional Integrity In Languedoc, South Of France, Fabrice Dreyfus, Yuna Chiffoleau, Jean‐Marie Welch

IGC Proceedings (1977-2023)

No abstract provided.

Food Supply Chains In Developed Countries And Livestock Production Systems, Alan Mcdermott

IGC Proceedings (1977-2023)

No abstract provided.

U.S. Geological Survey Science For The Wyoming Landscape Conservation Initiative—2018 Annual Report, Patrick J. Anderson, Cameron L. Aldridge, Jason S. Alexander, Timothy J.` Assal, Steven Aulenbach, Zachary H. Bowen, Anna D. Chalfoun, Geneva W. Chong, Holly Copeland, David R. Edmunds, Steve Germaine, Tabitha Graves, Julie A. Heinrichs, Collin G. Homer, Christopher G. Huber, Aaron N. Johnston, Matthew J. Kauffman, Daniel J. Manier, Ryan R. Mcshane, Cheryl A. Eddy-Miller, Kirk A. Miller, Adrian P. Monroe, Michael S. O'Donnell, Anna Ortega, Annika W. Walters, Daniel J. Wieferich, Teal B. Wyckoff, Linda Zeigenfuss

United States Geological Survey: Water Reports and Publications

The Wyoming Landscape Conservation Initiative (WLCI) was established in 2007 as a collaborative interagency partnership to develop and implement science-based conservation actions. During the past 11 years, partners from U.S. Geological Survey (USGS), State and Federal land management agencies, universities, and the public have collaborated to implement a long-term (more than 10 years) science-based program that assesses and enhances the quality and quantity of wildlife habitats in the southwest Wyoming region while facilitating responsible development. The USGS WLCI Science Team completes scientific research and develops tools that inform and support WLCI partner planning, decision making, and on-the-ground management actions.

In …

Diversity Of Grassland Resources And Modernization Of Pastoral Areas — The Comparative Study Of Grass Industry Among Usa, Mongolia And China, Jin Yi, Puchang Wang

IGC Proceedings (1977-2023)

No abstract provided.

Are Rangeland Management Policies Inappropriate To Biodiversity Conservation On The Western Tibetan Plateau, Tibet Autonomous Region, China?, J. L. Fox, Tsechoe Dorji, K. Dondhup

IGC Proceedings (1977-2023)

No abstract provided.