2,014 research outputs found

    Walking the Talk: A Guide to Assessment Using the CAPRA Community Problem Solving Model

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    CAPRA is a community problem-solving model with five stages: C = Clients, A = Analysis, P = Partnership, R = Response, and A = Assessment. CAPRA was the problem-solving method used by the Alaska Native and Technical Resource Center (ANTARC). This guide describes the final stage of the CAPRA model—assessment—including the reasons for conducing an assessment, the documentation needed and why it is needed, and methods for evaluation. Discussion is with a particular focus on assessment methods for community problem-solvers in rural Alaska Native villages. Some background about CAPRA is assumed.What is Assessment? / Why do we do Assessment? / Assessment = Documentation + Evaluation / Documentation / Evaluation / How Do We Deal With those Who Object to Assessment? / What DO We Do With Our Assessment? / Conclusio

    Alaska Native Technical Assistance and Resource Center: Final Report

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    Too often, federal and state justice programs directed at rural, predominately Alaska Native villages do not sufficiently coordinate planning and funding, and are not tailored to fit local cultures and needs. The language and institutional contexts of granting agencies and requests for proposals for grants frame justice problems and their solutions in ways that may or may not relate to the experiences of Alaska Native villages. The Alaska Native Technical Resource Center (ANTARC) was designed as a three-year project to improve village capacity to identify problems and educate the university and granting agencies about the nature of their justice problems and the resources needed to implement solutions. The initial group involved the Justice Center and four rural communities — Gulkana, Kotlik, Wainwright, and Yakutat — with representatives from the communities chosen by village leaders. This report examines ANTARC's evolution, considers its implementation, evaluates the results, and presents recommendations for promoting effective change in Alaska Native villages.Bureau of Justice Assistance, United States Department of Justice Award No. 1999-LB-VX-002Introduction / The Evolution of Antarc / Structure of the Project / Implementation / Evaluating Results / Concluding Recommendations / References / Appendix 1: Proceedings of the March 1999 Antarc Workshop / Appendix 2: Proceedings of the November 1999 Antarc Workshop / Appendix 3: Capra Training Materials / Appendix 4: Evaluation Training Workshop Material

    Evaluating Rice Straw as a Substitute for Barley Straw in Inhibiting Algal Growth in Farm Ponds

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    Algal blooms disrupt aquatic ecosystems and are more common in lakes, ponds, and rivers during the summer months due to nutrient pollution. Livestock production can contribute increased quantities of nutrients to water bodies from runoff of manure. Commonly used mechanical and chemical control methods may have limited success because algae are small and propagate quickly. Barley (Hordeum vulgare) straw has been shown to inhibit the growth of algae as the straw decomposes aerobically in ponds. Therefore, barley represents a natural option for algal biomass control. However, the small amount of barley production in Arkansas limits the availability of barley straw as a solution to control algal blooms locally. Other cereal grain straws may produce similar inhibitory effects during decomposition. Rice (Oryza sativa) is produced in large quantities in Arkansas, making rice straw a locally sourced straw product. The objective of this research was to determine the efficacy of using rice compared to barley straw to inhibit algal growth in freshwater ponds. Data were collected from nine farm ponds, three treated with rice straw, three treated with barley straw, and three without amendment to serve as the experimental control. Dissolved oxygen, pH, nitrate-nitrogen (NO3--N), dissolved phosphorus (P), temperature, and turbidity were measured for 14 weeks from June 12 to September 17, 2018. Algal biomass was measured as chlorophyll-a concentration to evaluate treatment effectiveness over time. Dissolved oxygen was significantly influenced by treatment and time. The NO3--N concentration in ponds treated with rice straw was significantly greater than the control and barley treatment. Chlorophyll-a concentrations were variable, and there were no consistent trends through time within a treatment. More research under controlled conditions to understand impacts of abiotic conditions, microbial and algal community compositions, and mode of action of algal inhibition is required before cereal straw can be a reliable, locally sourced method of algal control in farm ponds

    Using Poultry to Enhance Food Security in Stann Creek, Belize

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    Food insecurity is a growing issue in developing and developed countries alike, and in countries like Belize, the prevalence of hunger has soared in recent years. Not having access to diets with sufficient calories and nutrients leads to a host of developmental issues, including stunting and cognitive delays. The purpose of this work was to create an all-encompassing manual for small-scale poultry production in order to provide nourishment for the students and staff of a school in Belize. After determining that the best way to meet the school’s needs was through dual-purpose birds, background research was conducted to determine small-scale poultry facilities in developing countries. This involved designing the layout for the poultry houses (one for layers and one for broilers) given the space available, as well as sourcing materials both locally and abroad. The manual was written to include background information and step-by-step instructions for constructing the houses and caring for the birds. The researchers anticipate that this farm will positively impact the lives of the students and faculty of the school, in that they will have access to poultry meat and eggs, which will increase physical and cognitive performance, provide hands-on education, and incentivize students to finish their schooling rather than quitting to work to provide for their families

    Students’ Perceived Barriers, Benefits & International Programmatic Preferences

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    Study abroad experiences can change college students by contributing to their development of self-awareness, communication skills, and ability to navigate the unknown. The objective of this study was to determine students’ perceived barriers, benefits, and preferences for international programs (IP). Undergraduate students in large-enrollment, required courses by major, and all freshman orientation undergraduate courses in Bumpers College were targeted and all grade classifications were represented (n = 672). Based on a five-point Likert-type scale (1 = completely disagree to 5 = completely agree), students reported “cost is too high” (M = 3.93, SD = 1.00) and being “too busy with school” (M = 3.54, SD = 1.10) as the barriers keeping them from participating in an IP. Using the same Likert-scale, students reported “socially/culturally learn more about a host country” (M = 4.61, SD = 0.67) and “life-changing opportunity” (M = 4.60, SD = 0.66) as the most influencing benefits. Students were most interested in short-term, faculty-led programs (n = 234, 27.2%) with a length of two to three weeks (n = 224, 30.7%) during summer session I (n = 307, 39.4%). Students reported they would like to learn more information about future IPs through email (n = 278, 34.8%), classroom visits (n = 111, 13.9%), and their academic advisors (n = 108, 13.5%). Assessing student’s barriers, benefits, and preferences for IPs will guide Bumpers College program development. It is important to focus IP efforts on students’ needs and interests, while also providing meaningful, engaged learning in all environments

    A step in the right direction: streambank restoration efforts at the Botanical Garden of the Ozarks

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    The Botanical Garden of the Ozarks (BGO) is a unique destination in Northwest Arkansas that draws more than 80,000 visitors a year. While the BGO manages low-input practices, run-off from pesticide application and synthetic fertilizers containing phosphorus and nitrogen are of concern to water quality, habitat, and overall ecological interactions of the BGO streambanks and adjacent Hilton Creek, which flows directly into Lake Fayetteville. One way to reduce pollution to waterbodies is through the use of riparian buffers. This project sought to establish a riparian buffer immediately adjacent to a portion of Hilton Creek in an effort to improve ecological functions and water quality. The hypothesis of this study is that the streambank restoration will increase plant abundance and diversity and improve riparian habitat quality, thus enhancing ecological functions of the Hilton Creek streambank. Pre- and post-restoration assessments were conducted to test this hypothesis. A streambank riparian habitat quality assessment was adapted from the Qualitat del Bosc de Ribera’ (in English, ‘Riparian Habitat Quality’, (QBR)) index and species diversity values based from on-site plant species inventories were analyzed using a Shannon–Wiener Index of diversity. Overall, the pre-restoration QBR index value was calculated as 55 out of 100 and post-restoration QBR index value was calculated as 65 out of 100, suggesting an immediate improvement in riparian habitat quality. Inventoried plant species equated to a pre-restoration Shannon–Wiener Index of diversity value of 2.13, while the post-restoration Shannon–Wiener Index of diversity equaled 2.91, indicating an increase in species diversity. Water quality parameters were recorded to establish baseline values for Hilton Creek to encourage future monitoring of the project site as the streambank restoration matures

    The effect of turning frequency on in-vessel compost processing and quality

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    Composting can contribute to the zero waste initiative on the University of Arkansas (UA) campus. In-vessel systems like Earth Tubsℱ are purported to provide better control of temperature and moisture during the composting process. Turning materials helps facilitate microbial activity and thermophilic composting. The goal of this research was to determine if turning frequency affects processing or final quality of compost made with pre- and post-consumer food waste feedstock and a wood chip bulking agent. Turning frequencies (treatment) of 3 days/week and 7 days/ week were evaluated simultaneously throughout three sequential runs. Temperature, pH, electrical conductivity (EC), and moisture content (MC) were measured weekly during vessel filling. When the vessels reached one-half to two-thirds volumetric capacity, the compost entered a 30- day composting period during which no food waste or wood chips were added to the vessels, but turning continued. Total C, N, C:N ratio, and hot water extractable C (HWEC) and N (HWEN) were also measured at the conclusion of composting. Recommended values for temperature, pH, MC, and total C:N ratio are all possible to reach when composting with Earth Tubsℱ, but there is little to no effect of 3 days/week versus 7days/week treatment on final quality of compost, and quality is not consistent over time between runs. Further research would need to be done to assess whether Earth Tubsℱ are a viable option for large-scale food waste composting at UA, and whether the logistics of having the vessels off-site lend themselves to a sustainable campus-wide composting program

    Soil Organic Carbon and Mineralization Rates at the Woolsey Wet Prairie Mitigation Site in Fayetteville, Arkansas

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    Atmospheric carbon dioxide (CO2) levels are rapidly increasing, surpassing 400 ppm in 2013 from a pre-industrial revolution level of around 280 ppm. Researchers have been looking at methods to reduce CO2 levels in the atmosphere, including promoting carbon sequestration in soils. Carbon sequestration is the process where CO2 is naturally or artificially transferred out of the atmosphere and stored in the ocean, plant biomass, soils, and geologic formations. Seemingly contradictory to the notion of carbon sequestration is the use of fire as a management treatment for the restoration of native prairie grass ecosystems. Fire combusts plant biomass and produces CO2 as one of its products, potentially leading to increased atmospheric CO2 concentrations. The first objective of this research was to determine particulate (easily broken down) and total (easily broken down plus stable) soil organic matter content and CO2 respiration (output) in Woolsey Wet Prairie Sanctuary (WWPS) soil that has been restored and managed with annual burning for 10 years compared to soil from non-restored adjacent fields growing tall fescue. The first objective was accomplished by taking soil samples and CO2 respiration measurements before the 2017 annual prescribed burn. The second objective was to determine short-term impacts of the prescribed burn on soil carbon release and storage. The second objective was accomplished by comparing CO2 respiration before the fire management in the spring, then comparing to CO2 respiration 2, 7, 16, and 29 days post-treatment, and collecting soil samples. Soil samples were taken before the prescribed burn, two weeks after the burn, and two months after the burn to compare short-term changes in particulate organic matter (easily broken down; POM) and stable organic matter (OM). Results indicated high productivity in the wetland low-lying areas with statistically greater levels of POM and OM compared to the other sample sites. Additionally, there was no statistically significant change measured in POM following the annual prescribed burn at any sample site, nor a statistically significant increase in CO2 respiration. The results indicate that the managed wetland area is functioning as a highly-productive carbon sink

    Microdialysis: a method for quantifying in situ nitrogen fluxes in soil microsites

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    Microdialysis, a diffusion-based sampling technique commonly used in biomedical research, has recently been recognized as a candidate for monitoring chemical changes in the rhizosphere. The information it provides about nutrient diffusion may improve nitrogen use efficiency, leading to enhanced management and success of restoration projects. The objective of this study was to determine the efficacy of microdialysis sampling to quantify the relative recoveries (RR%) of nitrate-N and ammonium-N, the two inorganic nitrogen compounds typically found in soil. The effects of microdialysis flow rate, sample medium concentration, and the presence of both analytes in solution on the relative recoveries obtained from dialysate samples were investigated. In comparison to 3.75 and 5.0 ÎŒL/min, a flow rate of 2.0 ÎŒL/min resulted in an increased relative recovery for both nitrate-N and ammonium-N solutions, at 42.7% and 51.0%, respectively, and was determined to be an optimum rate for subsequent experiments using CMA 20 microdialysis probes. The RR% for both nitrate-N and ammonium-N did not display a statistically significant dependence on the concentration of analyte present in the sample medium. The analytes also did not exhibit interferences, and the presence of both nitrate-N and ammonium-N in the same solution did not influence the RR% of either analyte. The results obtained from this study will assist in validating a novel approach to measuring in situ nitrogen availability in soil with minimal disturbance

    Soil Moisture Regime and Mound Position Effects on Soil Water and Vegetation in a Native Tallgrass Prairie in the Mid-Southern United States of America

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    Prairie mounds are unique soil surface features that will become increasingly scarce as native tallgrass prairies are continually lost. This study aimed to evaluate (i) whether the soil moisture regime (SMR), mound position, and soil depth affect soil volumetric water content (VWC) and (ii) whether the SMR and mound position affect vegetation over time. Soil VWC was measured continuously from April 2017 to June 2018, and vegetation was sampled in June and August 2017 and in May and August 2018. Maximum VWC for selected rainfall events was ~ 2.5 times greater at 10 cm in the aquic inter-mound than the udic mound position at 30 cm. Soil dry-down rates were four times greater in the udic soil at 10 cm than the aquic soil at 30 cm. Aboveground plant biomass was numerically largest (8489 kg ha−1) at the aquic summit in August 2018 and smallest (1280 kg ha−1) at the aquic inter-mound in May 2018. Results clearly demonstrate the effects that prairie mound topography and differing SMRs have on soil water dynamics and prairie vegetation and suggest that management efforts need to account for mound topography and SMR in order to be most successful
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