Digital Commons Network^™

Recovery Potential Of The Mussel Communities In The Lower Section Of Big Walnut Creek, Jared B. Ellenbogen

Undergraduate Honors Thesis Projects

Since the enactment of the 1977 Clean Water Act, biologists have created numerous multimetric assessment tools to evaluate the biological integrity of water resources, using biological criteria. The integrity of Big Walnut Creek, Ohio, has been in flux since the 1955 construction of Hoover Dam, and while current water quality is high, mussel communities in the creek have yet to recover to historical levels. This study sought to determine the cause of the decline in the mussels in the lower section of the creek below the dam. Historical creek data, including a fish-based index of biotic integrity (f-IBI), invertebrate community …

The Interpersonal Theory Of Suicide Applied To Male Prisoners, Jon T. Mandracchia, Phillip N. Smith

Faculty Publications

The interpersonal theory of suicide proposes that severe suicide ideation is caused by the combination of thwarted belongingness (TB) and perceived burdensomeness (PB), yet few studies have actually examined their interaction. Further, no studies have examined this proposal in male prisoners, a particularly at-risk group. To address this gap, the current study surveyed 399 male prisoners. TB and PB interacted to predict suicide ideation while controlling for depression and hopelessness. High levels of both TB and PB were associated with more severe suicide ideation. The interpersonal theory may aid in the detection, prevention, and treatment of suicide risk in prisoners.

Short-Horned Grasshopper Subfamilies Feed At Different Rates On Big Bluestem And Switchgrass Cultivars, Muhammad Ullah, Fatima Mustafa, William W. Hoback, Mathew L. Brust, Kerri M. Farnsworth-Hoback, John E. Foster

Department of Entomology: Faculty Publications

Grasshopper species belonging to subfamilies Melanoplinae, Gomphocerinae and Oedipodinae were tested for their feeding rate on three types of grass. All grasshopper species were offered Shawnee and Kanlow cultivars of switchgrass, Panicum virgatum L. and big bluestem, Andropogon gerardii Vitman. The grasshoppers, Melanoplus femurrubrum and Melanoplus differentialis were also tested for their feeding on turgid or wilted leaves of the Shawnee cultivar of switchgrass. We found that M. differentialis consumed more switchgrass compared to big bluestem while M. femurrubrum and Arphia xanthoptera consumed the most Shawnee switchgrass. The M. differentialis consumed more turgid grass compared to wilted switchgrass. The feeding …

Parasites Within Parasites: Transmission And Evolution Of Neorickettsia In Digeneans, Stephen Edward Greiman

Theses and Dissertations

Digeneans are endoparasitic flatworms with complex life cycles that involve two or more different animals as definitive and intermediate hosts. Some digenean species harbor bacterial endosymbionts belonging to the genus Neorickettsia (Order: Rickettsiales, Family: Anaplasmataceae). Neorickettsia occur in all life cycle stages of digeneans and are maintained by vertical transmission. Far from benign however, Neorickettsia may also be transmitted horizontally by digenean parasites to their vertebrate definitive hosts. Once inside, Neorickettsia can infect macrophages and other cell types. For some vertebrate species (e.g. dogs, horses and humans), neorickettsial infections cause severe disease. With a few exceptions, studies of Neorickettsia have …

The Not So "Sweet Surprise": Lawsuits Blaming Big Sugar For Obesity-Related Health Conditions Face An Uphill Battle, Catherine Srithong Wicker

Journal of Law and Health

Because obesity and its associated health problems have been largely attributed to poor self-control, laziness, and various other personal failings, society has been unwilling to assign blame to food manufacturers for their role in contributing to this problem. But, as consumers are becoming more aware of the significantly harmful effect that poor diets can have on a person’s heath, the scales may be tipping in favor of bringing “Big Food” to court. Food manufacturers, however, are not exactly vulnerable. Armed with precedent disputing the causal link between consumption of fast food and adverse health effects, judicially-created barriers to admitting epidemiologic …

Landscape Pattern And Change Through Integration Of Remote Sensing And Stone Wall Feature Identification, Rebecca J. Trueman

Open Access Master's Theses

Stone walls are relics of an agricultural civilization that once flourished in New England. By identifying the locations of both historical and present day stone walls, compositions of post-agricultural landscapes common across the New England region can be assessed with inclusion of historic human-land use interactions. I selected the town of New Shoreham, known as Block Island, as the study site for this thesis. Block Island is located approximately 14.5 km south of the Rhode Island mainland. The Island has rich land use history which resulted in an extensive network of stone walls still present across the landscape. Through visual …

Vertebrate Natural History Notes From Arkansas, 2015, C. Renn Tumlison, M. B. Connior, H. W. Robison, C. T. Mcallister, L. A. Durden, D. Blake Sasse, D. A. Saugey

Journal of the Arkansas Academy of Science

Many important details of vertebrate biology are unknown to the scientific community because the observations are not part of a larger theoretical study. Yet, knowledge of such details not only fills gaps in understanding but also creates a framework for hypothesis building. We have collected observations of importance that can add to the growth of knowledge. Compiled here are important recent observations representing all vertebrate classes in Arkansas.

Studies Of Breeding Habitats And Seasonal Occurrence Of Mosquitoes In Putrajaya And Kuala Selangor, With Laboratory Experiments Of Guppies And Dragonfly Nymphs As Potential Biocontrol Predators Against Mosquito Larvae / Siti Nurhafizah Saleeza Ramlee, Siti Nurhafizah Saleeza Ramlee

Student Works (2010-2019)

Mosquito control is essential for the control of vector borne diseases. Many synthetic insecticides are widely used for controlling adult and larval mosquito populations. However, there are multirole effects: e.g. the harmful effects of chemicals on non-target organisms, the development of resistance to these chemicals in mosquitoes and the recent resurgence of different mosquito-borne diseases. The objectives of this study are to determine the potential breeding habitats of the mosquitoes, mosquito indices, mosquito species, density of mosquito larvae, perceptions of respondents on bio control and to conduct captivity studies on predator–prey relationships. Entomological surveillance was carried out in six localities …

Antibody Response Of Cattle To Vaccination With Commercial Modified Live Rabies Vaccines In Guatemala, Amy T. Gilbert, Lauren Greenberg, David Moran, Marlon Alvarado, Daniel L. Garcia, Leonard Peruski

United States Department of Agriculture Wildlife Services: Staff Publications

Vampire bat rabies is a public and animal health concern throughout Latin America. As part of an ecological study of vampire bat depredation on cattle in southern Guatemala,we conducted a vaccine seroconversion study among three dairy farms. The main objectives of this cross sectional and cohort study were to understand factors associated withbat bites among cattle, to determine whether unvaccinated cattle had evidence of rabies virus exposure and evaluate whether exposure was related to bat bite prevalence, and to assess whether cattle demonstrate adequate seroconversion to two commercial vaccines used in Guatemala. In 2012, baseline blood samples were collected immediately …

The Effects Of Tropical Storms And Hurricanes On Phytoplankton And Nutrient Concentrations In Wetland-Estuary Transition Zones Along The Gulf Coast, Tiffany Chantelle Johnson

LSU Master's Theses

Two consecutive storms made landfall along the Northern Gulf of Mexico on June and August 2012 (Tropical Storm Debby, 06/26/2012; Isaac, 08/28/2012, Category (Cat) 1 Saffir-Simpson Hurricane Scale). Each storm passed within 48 to 273 km of one of seven wetland-estuary transition zone sampling sites, and indirect storm effects associated with changes in freshwater discharge and an inflow of inorganic nutrients were observed at five of the seven sites. To assess the impacts of the 2012 hurricanes on hydrology, nutrient concentrations, and phytoplankton concentrations at transition zones along the Gulf Coast, a within-sites analysis along with a seasonal analysis were …

Dendrotempestology: Identifying The Statistical Relationship Between Hurricanes And Tree Growth In The Pine Savannas Of Coastal Mississippi, Clay Stephens Tucker

LSU Master's Theses

Hurricanes cause massive destruction of property and land through high wind speeds, high precipitation, and flooding from storm surge inundation. Hurricane Katrina produced nearly an 8.5 meter-high storm surge at Pass Christian, Mississippi. The envelope of high water from Hurricane Katrina covered a large area of the Gulf Coast including, but not limited to, the area from the Atchafalaya Bay in Louisiana to Mobile Bay in Alabama. This study assesses the relationship between hurricane characteristics (i.e., storm surge and maximum wind) and tree growth using coastal pine tree cores taken in Grand Bay National Estuarine Research Reserve (GBNERR). GBNERR, an …

Site-Specific Habitat And Landscape Associations Of Rusty Blackbirds Wintering In Louisiana, Sinead Mary Borchert

LSU Master's Theses

The Rusty Blackbird (Euphagus carolinus) has gained notoriety in recent years as one of the fastest declining North American bird species, with a global population loss of as much as 95%. Causes of the decline are not completely understood, but the high rate of forested wetland change in the southeastern United States suggests that wintering habitat degradation may be a primary driver. To better inform management on critical wintering grounds, I surveyed 68 sites in Louisiana where Rusty Blackbirds had been known to occur to address how occupancy changes with habitat type and colonization and extinction rates vary with ground …

Historical And Current Population Patterns Of The Staghorn Coral (_Acropora Cervicornis_) In Dry Tortugas National Park, Kaitlyn Lizza

USF Tampa Graduate Theses and Dissertations

Acropora cervicornis was once one of the dominant reef building corals of the Caribbean, Florida Keys, and Dry Tortugas (DRTO), but since the 1970’s populations have been decimated throughout their geographic range. Recently, a repopulation was documented through detailed benthic surveys conducted by the U.S. Geological Survey at three locations (Pulaski Shoal, East Key, and Loggerhead Key) within DRTO. Benthic surveys using the U.S Geological Survey’s Along-Track Reef Imaging System (ATRIS) revealed hundreds of previously undocumented colonies.

These discoveries have provided a unique data-set, allowing a comparison between the historical (1883, 1976) and contemporary distributions (2009, 2011) of A. cervicornis. …

Linking Classroom Learning And Research To Advance Ideas About Social-Ecological Resilience, Natalie C. Ban, Emily Boyd, Michael Cox, Chanda L. Meek, Michael Schoon, Sergio Villamayor-Tomas

Dartmouth Scholarship

There is an increasing demand in higher education institutions for training in complex environmental problems. Such training requires a careful mix of conventional methods and innovative solutions, a task not always easy to accomplish. In this paper we review literature on this theme, highlight relevant advances in the pedagogical literature, and report on some examples resulting from our recent efforts to teach complex environmental issues. The examples range from full credit courses in sustainable development and research methods to project-based and in-class activity units. A consensus from the literature is that lectures are not sufficient to fully engage students in …

The Root Of Sustainability: Investigating The Relationship Between Medicinal Plant Conservation And Surface Mining In Appalachia, Jessica B. Turner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Since European colonization, Appalachian culture has been based on resource extraction, such as coal mining, timbering, and Non-Timber Forest Product (NTFP) harvest. Surface mining degrades forest habitat for medicinal plants, especially the habitat for the internationally valuable medicinal herb, American ginseng (Panax quinquefolius L.), and the NTFP culture associated with this plant. The relationship between medicinal plant conservation and surface mining must be studied with a non- traditional, multi-faceted approach: culturally, economically, and ecologically. (1) Using community-based participatory surveys, I determined how ginseng harvesters and non- harvesters in West Virginia communities view the relationship between surface mining and ginseng harvest. …

Evaluating And Prioritizing Stream Restoration In Mined Appalachian Watersheds., Eric Mitchell Miller

Graduate Theses, Dissertations, and Problem Reports (ETD)

The state of West Virginia requires stream mitigation to offset anthropogenic impacts to streams; consequently there is a high concentration of mitigation projects in the mountaintop mining/valley fill region. Projects are typically outside mine boundaries and sites are selected at the discretion of the West Virginia Department of Environmental Protection. This dissertation evaluated current in-stream, natural channel design (NCD) structures and prioritized future project locations. First, we assessed the Little Coal River, which is one of the largest physical restoration projects in the state. The Little Coal drains 994 km2 with extensive historic and contemporary coal mining. The objectives of …

Interdisciplinary Research And Environmental Law, Dave Owen, Caroline Noblet

Faculty Scholarship

No abstract provided.

Stable Isotopes In Seabirds, Kimberly Gosciak

Williams Honors College, Honors Research Projects

Seabirds are a highly endangered group of vertebrates; they are more threatened than any other group of bird. However, the Common Murre is one species that is showing an increasing population trend; I found that Common Murres have shown a significant increase in δ¹⁵N since 1994, in contrast to the threatened Marbled Murrelet, which has a similar biology but has shown decreasing δ¹⁵ N values that typically correlate with declining population size. This is potentially due to sexual dimorphism that allows for the Common Murre to fill a larger niche. While I found no statistical difference between …

Antibody Response Of Cattle To Vaccination With Commercialmodified Live Rabies Vaccines In Guatemala, Amy T. Gilbert, Lauren Greenberg, David Moran, Danilo Alvarez, Marlon Alvarado, Daniel L. Garcia, Leonard Peruski

United States Department of Agriculture Wildlife Services: Staff Publications

Vampire bat rabies is a public and animal health concern throughout Latin America. Aspart of an ecological study of vampire bat depredation on cattle in southern Guatemala,we conducted a vaccine seroconversion study among three dairy farms. The main objec-tives of this cross sectional and cohort study were to understand factors associated withbat bites among cattle, to determine whether unvaccinated cattle had evidence of rabiesvirus exposure and evaluate whether exposure was related to bat bite prevalence, and toassess whether cattle demonstrate adequate seroconversion to two commercial vaccinesused in Guatemala. In 2012, baseline blood samples were collected immediately prior tointramuscular inoculation of …

Spatio-Temporal Patterns Of Water Table And Vegetation Status Of A Deserted Area, Limin Duan, Tingxi Liu, Xixi Wang, Yanyun Luo

Civil & Environmental Engineering Faculty Publications

Understanding groundwater-vegetation interactions is crucial for sustaining fragile environments of desert areas such as the Horqin Sandy Land (HSL) in northern China. This study examined spatio-temporal variations in the water table and the associated vegetation status of a 9.71 km² area that contains meadowland, sandy dunes, and intermediate transitional zones. The depth of the water table and hydrometeorologic parameters were monitored and Landsat Thematic Mapper (TM) and Moderate Resolution Imaging Spectroradiometer (MODIS) data were utilized to assess the vegetation cover. Spatio-temporal variations over the six-year study period were examined and descriptive groundwater-vegetation associations developed by overlaying a water table …

Describing The Health Care Needs Of School-Age Children In Sub-Saharan Africa In Order To Develop A Model Of A Nurse-Run School-Based Health Clinic, Bonnie Tong

Yale School of Nursing Digital Theses

Objective: Rural Kenya is affected by health disparities and poor health outcomes among school-age children. This paper identifies gaps in health care among school-aged children in rural Kenya, in order to identify a health care model to meet those gaps.

Design: The results of a systematic review on the health care needs were triangulated with field notes from interviews of stakeholders in a rural Kenyan village. Needs were then compared with currently available health care resources to identify gaps.

Sample: Multiple databases were searched to identify relevant articles published between the years 2000- 2014. Interviews were conducted with health workers, …

Longitudinal Variation In Environmental Impact At Rock Climbing Areas In The Red River Gorge Limits Of Acceptable Change Study Area, Daniel Boone National Forest, Kentucky, Nicholas Walendziak

Online Theses and Dissertations

Recreation ecology began in the 1960s to measure the impacts of recreation on ecosystems. Area of environmental impact is an important objective to assess recreational impact. However, few researchers have examined the trends of these impacts over time. This study measures the environmental area of impact at eight climbing areas, in Red River Gorge, Kentucky, over a six year period, to determine impact trends. The results of this research will help recreation ecologists and land managers understand environmental impacts over time, and possibly predict future impact scenarios. The hypothesis of this research is the total mean area of impact at …

The Vascular Flora Of Boyle County, Ky, Heidi M. Braunreiter

Online Theses and Dissertations

The vascular flora of Boyle County, Kentucky, was conducted from March 2013 to March 2015. Boyle County is located in central Kentucky and is part of the Bluegrass Physiographic Section. A total of 127 families, 392 genera, and 722 species, varieties, and subspecies were documented from Boyle County. Twelve plant communities were described: acidic mesophytic forest, acidic sub-xeric forest, acidic xeric forest, Bluegrass woodland, bottomland ridge/terrace forest, calcareous mesophytic forest, calcareous sub-xeric forest, depression pond/mudflat, dry limestone cliff/outcrops, riparian forest, wet prairie/meadow, and one rare state-listed plant community, the shale/siltstone glade. Five rare species with state rankings were discussed: American …

Utah Shrubland Management, Thomas A. Monaco, Kari E. Veblen, Justin Williams

Wildland Resources Faculty Publications

The Spring 2015 Newsletter highlights our study site in Park Valley, UT. The ranch where we work is owned and operated by Lance Westmoreland and family; greasewood is the targeted shrub.

Wolf-Cougar Co-Occurrence In The Central Canadian Rocky Mountains, Ellen Brandell

Undergraduate Theses, Professional Papers, and Capstone Artifacts

Cougars and wolves are top carnivores that influence the dynamics of an ecosystem, including prey behavior and dynamics, and interspecific competition. Studies about the interactions between wolves and cougars typically find wolves are dominant competitors to cougars. We examined single-species, single-season occupancy models and co-occurrence models of wolves and cougars in the Central Canadian Rocky Mountains to understand interactions between these two species on a grand landscape. Data was collected from 2012-2013 using remote wildlife cameras and separated into seasons. Naïve occupancy estimates were larger for wolves in both seasons, but both species had smaller ranges in winter. There were …

Three Essays On Public Organizations, Changgeun Yun

Theses and Dissertations--Public Policy and Administration

Organizations play key roles in modern societies. The importance of organizations for a society requires an understanding of organizations. In order to fully understand public organizations, it is necessary to recognize how organizational settings affect subjects of organizations and organizing. Although public and private organizations interrelate with each other, the two types are not identical. In this dissertation, I attempt to describe public organizations in their own setting by discussing three important topics in public organization theory: (1) innovation adoption in the public sector; (2) representative bureaucracy; and (3) decline and death of public organizations.

In Chapter II, I scrutinize …

Changes In Carbon Pools Influenced By Changes In Soil Texture, Slope, And Aspect A Decade Following Wildfire In Black Spruce Forests Of Interior Alaska, Gregory Houle

Dissertations, Master's Theses and Master's Reports

Topography and parent material (PM) texture control site drainage owing to changes in water holding capacity, infiltration, and insolation. In turn, these factors also affect fire regime. However, the interactive effects of site physiography, edaphic controls, and wildfire severity on ecosystem carbon accrual after wildfire are poorly understood. Throughout the summer of 2004 an area the size of Massachusetts burned in interior Alaska, and several studies were initiated to investigate the controls on organic layer consumption. In this study we re-sampled organic layer depths, below ground carbon stocks, and site revegetation from 38 burned black spruce sites from the 2004 …

Parental Conversation Styles And Learning Science With Preschoolers, Emily A. Stone

Honors Theses and Capstones

Preschool children participated in a science-learning event about light in their own classroom. The same day as the event, parents or caregivers were instructed to converse with their children at home in the evening about either the science learning event or another ‘special or fun’ event that happened to them recently in whatever way was natural for them. One week later, a researcher interviewed children to examine what they remembered about the science-learning event. Analyses focused on the impact of the topic and degree of elaboration of parent-child conversations on children’s memory for the science-learning event a week later. The …

Optimizing Data Management With Disparities In Data Value, G. Shankaranarayanan, Adir Even, Paul D. Berger

Journal of International Technology and Information Management

When there is a disparity in the value of different data records and fields, there is a need for an optimization of data resources. Not all data necessarily contribute the same value. It depends on the usage of the data, as well as a variety of other factors. This paper presents models for optimizing data management in the presence of a disparity between the values contributed by different data. We expound on what disparity of data value represents and illustrate models to derive a numerical measure of such disparity. We then use real-world data from a large data resource used …

Assessing Gull Abundance And Food Availability In Urban Parking Lots, Dan Clark, Jillian J. Whitney, Kenneth G. Mackenzie, Kiana K. G. Koenen, Stephen Destefano

Human–Wildlife Interactions

Feeding birds is a common activity throughout the world; yet, little is known about the extent of feeding gulls in urban areas. We monitored 8 parking lots in central Massachusetts, USA, during the fall and winter of 2011 to 2013 in 4 monitoring sessions to document the number of gulls present, the frequency of human–gull feeding interactions, and the effectiveness of signage and direct interaction in reducing human-provisioned food. Parking lots were divided between “education” and “no-education” lots. In education lots, we erected signs about problems caused when people feed birds and also asked people to stop feeding birds. We …