Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2021

Discipline
Institution
Keyword
Publication
Publication Type

Articles 31 - 60 of 362

Full-Text Articles in Entire DC Network

Agronomic Evaluation Of Alfalfa Cultivars In Rio Grande Do Sul, Brasil, J. C. De Saibro, R. Battisti, T. M. S. Freitas Nov 2021

Agronomic Evaluation Of Alfalfa Cultivars In Rio Grande Do Sul, Brasil, J. C. De Saibro, R. Battisti, T. M. S. Freitas

IGC Proceedings (1977-2023)

From April 1995 to June 1998, thirty five alfalfa (Medicago sativa L.) cultivars (cvs.) were evaluated in a field trial at the “Depressão Central” ecoclimatic region, in southern Brazil. Two years after sowing, 30 cultivars were excluded from the test due to their poor overall agronomic performance, mainly low forage DM yields. The remaining cultivars: Crioula (local genotype used as a check), Victoria, Rio and P 30 are hay-type cultivars while Alfagraze is a grazing-tolerant type. Twenty-two harvests were made and no significant differences were found for total DM yields among cvs. Crioula, Victoria, Rio and P 30; however, …

Go to article

Responses Of Wetland Soil Microbial Communities To Different Types Of Anthropogenic Stress, Grace Ann Cagle Nov 2021

Responses Of Wetland Soil Microbial Communities To Different Types Of Anthropogenic Stress, Grace Ann Cagle

LSU Doctoral Dissertations

Microorganisms are the major drivers of biogeochemical transformations of carbon and nitrogen in wetlands. These processes are crucial for ecological sustainability and are heavily impacted by human activities. How anthropogenic stress affects the microbial drivers of carbon storage and nutrient cycling in wetlands is not well understood. I investigated the response of wetland soil microbial communities to three different types of anthropogenic stress using DNA sequencing. First, I studied the effect of warming on microbial carbon processing in a peatland underlaid by permafrost by comparing the abundances of specific genes between sites subjected to five years of warming and controls. …

Go to article

Modeling Environmental Factors Related To Drought-Induced Tree Mortality Based On Lidar And Hyperspectral Imagery, Lauren Nicole Sharwood Nov 2021

Modeling Environmental Factors Related To Drought-Induced Tree Mortality Based On Lidar And Hyperspectral Imagery, Lauren Nicole Sharwood

Dissertations and Theses

Climate change is projected to bring more frequent and prolonged droughts, causing widespread forest die-off. Identifying tree mortality over large spatial extents in response to the most recent California drought will help forest managers and conservationists understand where there may be a greater likelihood of future die-offs. In order to find more at-risk areas, this study evaluated how interacting site-specific topographic, climate, substrate, and stand characteristics mediated tree mortality in the Central Sierra Nevada during the 2012-2016 drought. The author used lidar and hyperspectral imagery provided by the National Ecological Observatory Network to identify individual dead trees using the Random …

Go to article

Amphicarpy In The Tropical Legume Centrosema Rotundifolium: A Research Project In Eastern Venezuela, S. Müller, R. Schultze-Kraft, I. Rodríguez Nov 2021

Amphicarpy In The Tropical Legume Centrosema Rotundifolium: A Research Project In Eastern Venezuela, S. Müller, R. Schultze-Kraft, I. Rodríguez

IGC Proceedings (1977-2023)

Amphicarpy is a particular reproduction mechanism by which a plant can produce both above-ground and below-ground seeds and thus has the potential to contribute to an enhanced persistence of a plant population. It can be found in a range of tropical legumes, e.g. in several Centrosema species. The balance between above- and below-ground seed production is evidently influenced by environment and management factors but these influences are not well known. In the case of perennial tropical legumes, in addition to seed production shifts the allocation of resources affects also the production of tuberous roots as storage organs. A research project …

Go to article

Global Distribution And Richness Of Armillaria And Related Species Inferred From Public Databases And Amplicon Sequencing Datasets, Rachel A. Koch, Joshua Herr Nov 2021

Global Distribution And Richness Of Armillaria And Related Species Inferred From Public Databases And Amplicon Sequencing Datasets, Rachel A. Koch, Joshua Herr

Department of Plant Pathology: Faculty Publications

Armillaria is a globally distributed fungal genus most notably composed of economically important plant pathogens that are found predominantly in forest and agronomic systems. The genus sensulato has more recently received attention for its role in woody plant decomposition and in mycorrhizal symbiosis with specific plants. Previous phylogenetic analyses suggest that around 50 species are recognized globally. Despite this previous work, no studies have analyzed the global species richness and distribution of the genus using data derived from fungal community sequencing datasets or barcoding initiatives. To assess the global diversity and species richness of Armillaria, we mined publicly available sequencing …

Go to article

Reproductive Health Policy Saga: Restrictive Abortion Laws In Low- And Middle-Income Countries (Lmics), Unnecessary Cause Of Maternal Mortality, Ngo Valery Ngoa, Ngambouk Vitalis Pemuntaa, Basil N. Nduma, Fokunang Estella Tembe, Mbong Sidonnie Eyambe, Keziah Ezra, Henry Che Ngwa, Emmanuel Ombugadu Sabo Nov 2021

Reproductive Health Policy Saga: Restrictive Abortion Laws In Low- And Middle-Income Countries (Lmics), Unnecessary Cause Of Maternal Mortality, Ngo Valery Ngoa, Ngambouk Vitalis Pemuntaa, Basil N. Nduma, Fokunang Estella Tembe, Mbong Sidonnie Eyambe, Keziah Ezra, Henry Che Ngwa, Emmanuel Ombugadu Sabo

Health & Biomedical Sciences Faculty Publications

Abortion is a common but controversial phenomenon globally. The discourse on the legality of abortion remains intricate, leaving a substantial number of women restricted from accessing safe abortion. There are evidence of an association between restrictive abortion laws, unsafe abortions, and maternal mortality in low-and middle-income countries (LMICs). We explore how restrictive abortion laws violate women’s right to health and bodily integrity. We used Carol Bacchi’s policy framework to analyze how restrictive abortion laws have been discursively framed (problematization); the assumptions that underpinned the representation; the consequences of the representation; what was left unproblematic; how the representation could be questioned, …

Go to article

Ecological Study On Bee Rangeland Plants In Wadi Shabouh, Hadhramout Governorate, Republic Of Yemen, Salem Saeed Bacwud, Mohammed Saeed Khanbash, Ahmed Salem Bataher, Amen Abdelqader Hashleh Nov 2021

Ecological Study On Bee Rangeland Plants In Wadi Shabouh, Hadhramout Governorate, Republic Of Yemen, Salem Saeed Bacwud, Mohammed Saeed Khanbash, Ahmed Salem Bataher, Amen Abdelqader Hashleh

Hadhramout University Journal of Natural & Applied Sciences

Bee rangeland Plants are the basis of beekeeping. The success of bee projects depends on the availability and variety range of species whose flowers contain nectar and pollen grains that are used in bee feeding. The aim of this study is to compare and determine the type of food for most of the plant species that are fed by the bees in Wadi Shahouh. In addition, to finding out the reasons of rangelands environmental degradation of the rangeland plants in the survey samples.The plant survey was carried out during the period from February to March 2017 by using regular sampling. …

Go to article

An Environmental Study To Adapt Some Hadhramout Coast Plant For Drought And Salinity Tolerance, Fatehia Ali Bashantoof, Ahmed Sbit Bamousy, Abdulkarim Saber Ali Nov 2021

An Environmental Study To Adapt Some Hadhramout Coast Plant For Drought And Salinity Tolerance, Fatehia Ali Bashantoof, Ahmed Sbit Bamousy, Abdulkarim Saber Ali

Hadhramout University Journal of Natural & Applied Sciences

The study was conducted between May 2016-August 2017. An auger was used to collect 60 random soil samples to carry out the physical and chemical analyses. The selected plants were Salola baryosma and Aeurops lagopoides in the salt marsh and Prosopis juliflora and Calotropis procera in the valleys. The results revealed clear physical and chemical differences within the soils of the salt marshes and valleys that prove to be sandy, loamy, basic and saline. All investigated variables differ in the selected areas e.g. % of sand, silt, clay. The soil of all the salt marshes was devoid of gravel which …

Go to article

The 2019 Conference On Health And Active Transportation: Research Needs And Opportunities, David Berrigan, Astrid Dannenberg, Michelle Lee, Kelly Rodgers, Janet R. Wojcik, Behram Wali, Calvin P. Tribby, Ralph Buehler, James F. Sallis, Multiple Additional Authors Nov 2021

The 2019 Conference On Health And Active Transportation: Research Needs And Opportunities, David Berrigan, Astrid Dannenberg, Michelle Lee, Kelly Rodgers, Janet R. Wojcik, Behram Wali, Calvin P. Tribby, Ralph Buehler, James F. Sallis, Multiple Additional Authors

Urban Studies and Planning Faculty Publications and Presentations

Active transportation (AT) is widely viewed as an important target for increasing participation in aerobic physical activity and improving health, while simultaneously addressing pollution and climate change through reductions in motor vehicular emissions. In recent years, progress in increasing AT has stalled in some countries and, furthermore, the coronavirus (COVID-19) pandemic has created new AT opportunities while also exposing the barriers and health inequities related to AT for some populations. This paper describes the results of the December 2019 Conference on Health and Active Transportation (CHAT) which brought together leaders from the transportation and health disciplines. Attendees charted a course …

Go to article

Uk B.1.1.7 (Alpha) Variant Exhibits Increased Respiratory Replication And Shedding In Nonhuman Primates, Kyle Rosenke, F Feldmann, Atsushi Okumura, Frederick Hansen, Tsing Lee Tang-Huau, Kimberly Meade-White, Benjamin Kaza, Julie Callison, Matthew C. Lewis, Brian J. Smith, Patrick W. Hanley, Jamie Lovaglio, Michael A. Jarvis, Carl Shaia, H Feldmann Nov 2021

Uk B.1.1.7 (Alpha) Variant Exhibits Increased Respiratory Replication And Shedding In Nonhuman Primates, Kyle Rosenke, F Feldmann, Atsushi Okumura, Frederick Hansen, Tsing Lee Tang-Huau, Kimberly Meade-White, Benjamin Kaza, Julie Callison, Matthew C. Lewis, Brian J. Smith, Patrick W. Hanley, Jamie Lovaglio, Michael A. Jarvis, Carl Shaia, H Feldmann

School of Biomedical Sciences

The continuing emergence of SARS-CoV-2 variants calls for regular assessment to identify differences in viral replication, shedding and associated disease. In this study, we compared African green monkeys infected intranasally with either the UK B.1.1.7 (Alpha) variant or its contemporary D614G progenitor. Both variants caused mild respiratory disease with no significant differences in clinical presentation. Significantly higher levels of viral RNA and infectious virus were found in upper and lower respiratory tract samples and tissues from B.1.1.7 infected animals. Interestingly, D614G infected animals showed significantly higher levels of viral RNA and infectious virus in rectal swabs and gastrointestinal tissues. Our …

Go to article

Studying Neurotoxic Effects Of Three Synthetic Insecticides And Two Herbal Infusions On The Nervous System Of The Fruit Fly Drosophila Melanogaster, Sara Khamis Obaid Hamarain Al Dhaheri Nov 2021

Studying Neurotoxic Effects Of Three Synthetic Insecticides And Two Herbal Infusions On The Nervous System Of The Fruit Fly Drosophila Melanogaster, Sara Khamis Obaid Hamarain Al Dhaheri

Theses

Pesticides applied on plants and animals can reach the human diet once they enter food chains. Insecticides are neurotoxic agents; they have the potential of causing damage to the nervous system in people. The damage could induce or promote neurodegenerative diseases such as the Parkinson’s and Alzheimer's. It is well-documented that the exposure to the insecticide chlorpyrifos (CPF) stimulate the Parkinson disease in humans and experimental animals. Thus, this research project will study effect of three synthetic insecticides pirimicarb, tefluthrin, and CPF on the nervous system of Drosophila melanogaster as a model organism. In addition, the project will evaluate the …

Go to article

The Influence Of Maternal Glucocorticoids On Offspring Phenotype In High-And Low-Risk Environments, Kirsty J. Macleod, Tracy Langkilde, Cameron P. Venable, David C. Ensminger, Michael J. Sheriff Nov 2021

The Influence Of Maternal Glucocorticoids On Offspring Phenotype In High-And Low-Risk Environments, Kirsty J. Macleod, Tracy Langkilde, Cameron P. Venable, David C. Ensminger, Michael J. Sheriff

Faculty Research, Scholarly, and Creative Activity

Elevated maternal glucocorticoid levels during gestation can lead to phenotypic changes in offspring via maternal effects. Although such effects have traditionally been considered maladaptive, maternally derived glucocorticoids may adaptively prepare offspring for their future environment depending upon the correlation between maternal and offspring environments. Nevertheless, relatively few studies test the effects of prenatal glucocorticoid exposure across multiple environments. We tested the potential for ecologically relevant increases in maternal glucocorticoids in the eastern fence lizard (Sceloporus undulatus) to induce adaptive phenotypic changes in offspring exposed to high or low densities of an invasive fire ant predator. Maternal treatment had limited effects …

Go to article

Analisis Spasial Kejadian Demam Berdarah Dengue Di Kabupaten Cirebon Tahun 2014-2018, Irwin Umi Latifah, Laila Fitria Oct 2021

Analisis Spasial Kejadian Demam Berdarah Dengue Di Kabupaten Cirebon Tahun 2014-2018, Irwin Umi Latifah, Laila Fitria

Jurnal Nasional Kesehatan Lingkungan Global

Background. Dengue hemorrhagic fever is a arbovirus disease transmitted by Aedes sp. throughout the world including Indonesia. This disease is endemic in several regions such as West Java, one of regions is Cirebon regency whose cases are always in the region. This study aims to spatially analyze the incidence of dengue fever in Cirebon regency in 2014-2018. This study uses an ecological study design, which analyzes the population between climate variables (air temperature, relative humidity, rainfall and wind speed), population density, and larval free numbers using secondary data. Methods. This study uses graphical relationship analysis, statistical analysis that is statistical …

Go to article

Nationwide Perspectives And Experiences Of Gay And Bisexual Male 4-H Alums, Jeff Howard, Teresa Mccoy, Chenzi Wang Oct 2021

Nationwide Perspectives And Experiences Of Gay And Bisexual Male 4-H Alums, Jeff Howard, Teresa Mccoy, Chenzi Wang

Journal of Human Sciences and Extension

While 4-H espouses to be inclusive of all, the reality is often that the bulk of membership within 4-H community clubs is viewed with a heteronormative lens of participation. Recognizing that existing studies of gay and bisexual individuals who grew up in 4-H do not exist, this study is novel and critical to begin to fill the research gap and provide evidence of the experiences of gay male youth in 4-H. A total of 165 gay and bisexual men who are 4-H alumni shared what about 4-H helped them feel included, that they belonged, and what about the experience caused …

Go to article

Behavioral Observations And Stable Isotopes Reveal High Individual Variation And Little Seasonal Variation In Sea Otter Diets In Southeast Alaska, Nicole Laroche, Sydney L. King, Matthew C. Rogers, Ginny L. Eckert, Heidi C. Pearson Oct 2021

Behavioral Observations And Stable Isotopes Reveal High Individual Variation And Little Seasonal Variation In Sea Otter Diets In Southeast Alaska, Nicole Laroche, Sydney L. King, Matthew C. Rogers, Ginny L. Eckert, Heidi C. Pearson

Faculty, Staff, and Students

Two complementary approaches were used to assess year-round variation in the diet of sea otters Enhydra lutris around Prince of Wales Island (POW) in southern Southeast Alaska, a region characterized by mixed-bottom habitat. We observed sea otters foraging to determine diet composition during the spring and summer. Then, we obtained sea otter vibrissae, which record temporal foraging patterns as they grow, from subsistence hunters to identify year-round changes in sea otter diets via stable isotope analysis of carbon (δ13C) and nitrogen (δ15N). We compared the stable isotopes from sea otter vibrissae and sea otter prey items that were collected during …

Go to article

Effects Of Refuge Prey On Stability Of The Prey-Predator Model Subject To Immigrants: A Mathematical Modelling Approach, Mussa Amos Stephano, Il Hyo Jung Oct 2021

Effects Of Refuge Prey On Stability Of The Prey-Predator Model Subject To Immigrants: A Mathematical Modelling Approach, Mussa Amos Stephano, Il Hyo Jung

Tanzania Journal of Science

Prey-predator system is enormously complex and nonlinear interaction between species. Such complexity regularly requires development of new approaches which involves more factors in analysis of its population dynamics. In this paper, we formulate a modified Lotka-Volterra model that incorporates factors such as refuge prey and immigrants. We investigate the effects of refuge prey and immigrants by varying the refuge factor, with and without immigrants. The results show that with Holling’s type I functional response, the proposed model is asymptotically convergent when a refuge prey factor is introduced. Moreover, with Holling’s type II functional response, the proposed mathematical model is unstable …

Go to article

1970-1979 Oct 2021

1970-1979

Lambuth Bulletins and Catalogs

No abstract provided.

Go to article

Knowledge About And Knowledge With: Contributions From Feminist Research To Knowledge Co-Production For Pastoral Systems, F. Ravera, María Fernández-Giménez, E. Oteros-Rozas Oct 2021

Knowledge About And Knowledge With: Contributions From Feminist Research To Knowledge Co-Production For Pastoral Systems, F. Ravera, María Fernández-Giménez, E. Oteros-Rozas

IGC Proceedings (1977-2023)

Globally, the gender dynamics of rangeland social-ecological systems have received scant attention. Further, research paradigms, methods and methodologies that leave little room for equitable engagement with research participants and genuine action-oriented research-practice partnerships dominate in pastoralist/rangeland studies. Our research is informed by a feminist philosophy of science and based on decolonial and feminist political ecology studies that focus on gendered science and knowledge production. Feminist research calls for reflection on who produces knowledge and how such knowledge is used and shared. Feminist practices such as reciprocity, care, and positionality, cultivate awareness of the power dynamics embedded in the research process …

Go to article

Hyperspectral Reflectance-Based Phenotyping For Quantitative Genetics In Crops: Progress And Challenges, Marcin Grzybowski, Kuwan K. Wijewardane, Abbas Atefi, Yufeng Ge, James C. Schnable Oct 2021

Hyperspectral Reflectance-Based Phenotyping For Quantitative Genetics In Crops: Progress And Challenges, Marcin Grzybowski, Kuwan K. Wijewardane, Abbas Atefi, Yufeng Ge, James C. Schnable

Center for Plant Science Innovation: Faculty Publications

Many biochemical and physiological properties of plants that are of interest to breeders and geneticists have extremely low throughput and/or can only be measured destructively. This has limited the use of information on natural variation in nutrient and metabolite abundance, as well as photosynthetic capacity in quantitative genetic contexts where it is necessary to collect data from hundreds or thousands of plants. A number of recent studies have demonstrated the potential to estimate many of these traits from hyperspectral reflectance data, primarily in ecophysiological contexts. Here, we summarize recent advances in the use of hyperspectral reflectance data for plant phenotyping, …

Go to article

Soil Microbial Carbon, Nitrate And Ammonium Nitrogen Dynamics In Urochloa Grass Cultivated In Sub-Humid Kenya, K. W. Ndung’U-Magiroi, M. N. Koech, M. C. Mutoko, M. Kamidi, Elias M. Gichangi, Donald M. G. Njarui Oct 2021

Soil Microbial Carbon, Nitrate And Ammonium Nitrogen Dynamics In Urochloa Grass Cultivated In Sub-Humid Kenya, K. W. Ndung’U-Magiroi, M. N. Koech, M. C. Mutoko, M. Kamidi, Elias M. Gichangi, Donald M. G. Njarui

IGC Proceedings (1977-2023)

A study was conducted to monitor the dynamics of available soil phosphorus (P), soil microbial biomass carbon (SMBC), nitrogen (SMBN), ammonium and nitrate nitrogen under seven Urochloa grass cultivars at Kitale, Kenya. The Urochloa cultivars: Urochloa brizantha cvs. Marandu, MG-4, Piata, Xaraes, U. decumbens cv. Basilisk, U. hybrid cv. Mulato II and U. humidicola cv. Llanero was compared with two popularly grown forages, Rhodes grass (Chloris gayana cv. KAT R3), Napier grass (Pennisetum purpureum cv. KK1) and annual weeds. The treatments were tested in a randomized complete block design arranged in a split plot treatment structure with two …

Go to article

Climate Smart Urochloa Grasses Improves Soil Health In The Semi-Arid Tropics Of Kenya, Elias M. Gichangi, Donald M. G. Njarui, Mwangi Gatheru Oct 2021

Climate Smart Urochloa Grasses Improves Soil Health In The Semi-Arid Tropics Of Kenya, Elias M. Gichangi, Donald M. G. Njarui, Mwangi Gatheru

IGC Proceedings (1977-2023)

The measurement of soil aggregates stability and soil microbial biomass can be used as an early indicator of long-term changes in soil quality. A study was conducted to quantify the amounts of shoots and roots biomass of Urochloa grass cultivars (commonly known as Brachiaria) and their effects on changes in the size distribution and stability of soil aggregates and on microbial biomass carbon (C), nitrogen (N) and phosphorus (P) in a structurally unstable sandy loam soil at Ithookwe and Katumani in semi-arid tropical Kenya. The Urochloa grass cultivars included Urochloa decumbens cv. Basilisk, U. brizantha cvs Marandu, MG-4, Piatã and …

Go to article

Inventory And Distribution Of Mosquitoes (Diptera, Culicidae) In The Aures Region (Batna, Algeria), Nora Belkhiri, Wafa Habbachi, Saliha Benhissen, Naama Frah, Abdelmadjid Yagoub Asloum, Nadia Aberkane Oct 2021

Inventory And Distribution Of Mosquitoes (Diptera, Culicidae) In The Aures Region (Batna, Algeria), Nora Belkhiri, Wafa Habbachi, Saliha Benhissen, Naama Frah, Abdelmadjid Yagoub Asloum, Nadia Aberkane

Journal of Bioresource Management

Mosquitoes are the most terrifying both for their abundance and for the diseases they transmit. They are vectors of malaria, lymphatic filariasis and arbovirus such as yellow fever, dengue, viral encephalitis and African horse sickness. These characteristics give this fauna prominent importance and health interest. To identify the most widespread mosquito species, we conducted for the first time an inventory in the Aures region more particularly the wilaya of Batna (East of Algeria) from May 2017 to January 2020, we studied their diversity, abundance and distribution. The sampling is done by monthly surveys of the various localities chosen, using the …

Go to article

Combined Use Of Data From Avian Surveys Along The Pacific Crest Trail With Biodiversity Repositories To Model Habitat Suitability Throughout Northern California, Holli N. Pruhsmeier, Michael C. Mcgrann, Jim Graham Oct 2021

Combined Use Of Data From Avian Surveys Along The Pacific Crest Trail With Biodiversity Repositories To Model Habitat Suitability Throughout Northern California, Holli N. Pruhsmeier, Michael C. Mcgrann, Jim Graham

IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt

Models that describe species distributions are valuable in guiding management decisions. We compared and combined two avian datasets during the 2010 breeding season in northern California, USA. These datasets were a large-scale avian diversity survey from McGrann and Furnas (2016; 2018) and combined data from Biological Information Serving Our Nation (BISON) and Global Biodiversity Information Facility (GBIF). Our objective was to compare the utility of these two datasets, that employ separate field protocols, to model habitat use for the Black-headed Grosbeak, Hairy Woodpecker, and Yellow-rumped Warbler, three common forest birds in our study area that occupy distinctive habitat types. We …

Go to article

Association Between Aqueous Atrazine And Pediatric Cancer In Nebraska, Jagadeesh Puvvula, Shannon L. Bartelt-Hunt, Balkiss S. Ouattara, Alan S. Kolok, Jesse E. Bell, Eleanor G. Rogan Oct 2021

Association Between Aqueous Atrazine And Pediatric Cancer In Nebraska, Jagadeesh Puvvula, Shannon L. Bartelt-Hunt, Balkiss S. Ouattara, Alan S. Kolok, Jesse E. Bell, Eleanor G. Rogan

Department of Civil and Environmental Engineering: Faculty Publications

Agrichemicals, chemicals used to maximize crop and animal production, can lead to water quality concerns when these chemicals run off into surface and groundwater after precipitation events. In Nebraska, one such chemical is atrazine, a suspected carcinogen. This study evaluated the association between atrazine in surface and groundwater, in relation to the incidence of pediatric cancer in Nebraska watersheds over 30 years (1 January 1987 to 31 December 2016). The watersheds were grouped into four categories based on the average atrazine concentration over the study period, using quantile classification. The associations between atrazine (ground/surface) and pediatric cancer after adjusting for …

Go to article

Camera Trap Survey Suggests Forestry And Prescribed Burns Attract Wildlife, But May Not Enhance Diversity, Melissa S. Vilgats, Ryan Ott, Stephanie S. Coster Oct 2021

Camera Trap Survey Suggests Forestry And Prescribed Burns Attract Wildlife, But May Not Enhance Diversity, Melissa S. Vilgats, Ryan Ott, Stephanie S. Coster

Virginia Journal of Science

This study explored whether habitat management techniques such as forest thinning and burning promoted biodiversity. Fifteen camera trap stations were established at Fort A.P. Hill in Bowling Green, VA across forest stands with low, medium, and high basal area. Camera traps were deployed for a total of 532 trap nights, and trap success and species diversity were calculated using Shannon’s index. At each site, the distance to trafficable roadways and water sources, vegetation composition, and the percent groundcover, canopy cover, and understory were measured. The cameras captured nine species and recorded a total of 398 trap events. Linear regression was …

Go to article

Bird Diversity In The Ecuadorian Chocó: A Proposal For Avitourism In Villaflora And Manduriacu Reserve, Elizabeth Kroger Oct 2021

Bird Diversity In The Ecuadorian Chocó: A Proposal For Avitourism In Villaflora And Manduriacu Reserve, Elizabeth Kroger

Independent Study Project (ISP) Collection

Ecuador is rich in avifauna, and the Chocó bioregion of Northwestern Ecuador is a hotspot for bird endemism and diversity. However, many rare and beautiful species are threatened by human activities such as logging and mining. It is essential that communities are able to find alternative solutions that bring economic benefits and improve public health. Avitourism is an economically beneficial and environmentally friendly solution. This study examined avifaunal biodiversity in Villaflora and Manduriacu Reserve, a small town in the cloud forest of the Chocó region. Point counts on pre-existing trails were used to assess bird communities as well as search …

Go to article

Pubh 8133 – Advanced Epidemiology, Yelena Tarasenko Oct 2021

Pubh 8133 – Advanced Epidemiology, Yelena Tarasenko

College of Public Health: Faculty Syllabi (2014-2021)

An in-depth integration of advanced epidemiology concepts designed to reinforce epidemiological principles, as well as build a foundation for epidemiologic research in public health practice. Specific course content includes theory, methods, and applications for epidemiologic studies including random and systematic error, confounding, counterfactuals, causal inference, effect modification, internal and external validity and advanced study design. Emphasis will also be placed on choosing and performing appropriate analytic techniques necessary for biostatistical inference, including estimation and interpretation of effect measures.

Go to article

On The State Of Dance Philosophy, Curtis L. Carter Oct 2021

On The State Of Dance Philosophy, Curtis L. Carter

Philosophy Faculty Research and Publications

What are Eric Mullis’s contributions to a pragmatist philosophy of dance? First, the work brings attention to aspects of dance in regional and religious contexts and to a selection of religious dance practices (Pentecostal and Quaker) not typically addressed in the literature of dance philosophy, thus adding to the current scope of dance studies. This book’s main strength with respect to pragmatist philosophies is its efforts to apply existing theories of pragmatism (James and Dewey, with commentary on Shusterman’s neopragmatist somaesthetics) to aspects of dance in a particular regional setting. This task is accomplished with three aspects of the research: …

Go to article

Diversifying Bioenergy Crops Increases Yield And Yield Stability By Reducing Weed Abundance, Jacob M. Jungers, Yi Yang, Christopher W. Fernandez, Forest Isbell, Clarence Lehman, Don Wyse, Craig Sheaffer Oct 2021

Diversifying Bioenergy Crops Increases Yield And Yield Stability By Reducing Weed Abundance, Jacob M. Jungers, Yi Yang, Christopher W. Fernandez, Forest Isbell, Clarence Lehman, Don Wyse, Craig Sheaffer

Dartmouth Scholarship

Relationships between species diversity, productivity, temporal stability of productivity, and plant invasion have been well documented in grasslands, and these relationships could translate to improved agricultural sustainability. However, few studies have explored these relationships in agricultural contexts where fertility and weeds are managed. Using 7 years of biomass yield and species composition data from 12 species mixture treatments varying in native species diversity, we found that species richness increased yield and interannual yield stability by reducing weed abundance. Stability was driven by yield as opposed to temporal variability of yield. Nitrogen fertilization increased yield but at the expense of yield …

Go to article

Socio-Ecological Analysis Of Artisanal Gold Mining In West Africa: A Case Study Of Ghana, Richard Takyi, Rasha Hassan, Badr El Mahrad, Richard Adade Sep 2021

Socio-Ecological Analysis Of Artisanal Gold Mining In West Africa: A Case Study Of Ghana, Richard Takyi, Rasha Hassan, Badr El Mahrad, Richard Adade

Journal of Sustainable Mining

The surge in artisanal gold mining (AGM) activities and the associated environmental impact in Ghana have elicited several stakeholders' attempts to curb the problem. However, due to little understanding of the underlying issues, these efforts have been ineffective. This study aims to use a socio-ecological framework to analyze drivers of AGM activities, the environmental pressures, the state change, their impact on human welfare, and the management response as measures (DAPSI(W)R(M)) to the problem. Evaluate AGM's impact on Ghana's ability to achieve the United Nations Sustainable Development Goals (SDGs). Data were collected from relevant literature on the subject and analyzed with …

Go to article

First Prev Next Last