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Articles 1 - 10 of 10
Full-Text Articles in Environmental Sciences
Development Of Enrichment Cultures For Anaerobic Reductive Dechlorination Of Tetrachloroethene Under Low Ph Conditions, Chen Jiang
All Theses
Bioremediation is an attractive remediation strategy for groundwater contaminated with tetrachloroethene (PCE) since it can result in complete reductive dechlorination to non-hazardous ethene, often at a lower cost than other treatment methods. The optimum pH for microbes that chlororespire chlorinated ethenes is in the range of 6.5-7.5. However, the groundwater at many locations is outside this range, and typically on the low side. Addition of a base to increase the pH is problematic due to the difficulty of achieving homogenous distribution and the potential for clogging caused by precipitation. The objectives of this thesis were 1) to develop anaerobic enrichment …
Novel Data As A Source For Assessing Breeding Phenology Of White-Tailed Deer (Odocoileus Virginianus) In South Carolina, David Stone
All Theses
White-tailed deer (Odocoileus virginianus) breeding phenology varies temporally throughout the species' range and is critical to population management and hunter enjoyment. The South Carolina Department of Natural Resources (SCDNR) demographic and reproductive data, collected primarily from 1970-1992, suggest that 81.86% of conceptions in the Coastal Plain occur between 6 October and 16 November. However, current data regarding conception dates are lacking for a variety of reasons including the current absence of check stations and the use of hunter surveys as the primary means of data collection. To more closely examine recent characteristics of the white-tailed deer breeding season phenology, we …
Lead And Cadmium In Seabirds Of South Africa, Carly Summers
Lead And Cadmium In Seabirds Of South Africa, Carly Summers
All Theses
Levels of lead (Pb) and cadmium (Cd) were investigated as potential stressors in adult African penguins (Spheniscus demersus) in the Western Cape Province, South Africa and in nine species of breeding seabirds on Marion Island, South Africa. Seabirds are sentinels of environmental pollution and allow researchers to study contaminant dynamics in marine ecosystems. Many seabirds occupy high trophic positions, which gives them the potential to highlight threats to other apex predators from environmental pollutants. They also accumulate contaminants in higher concentrations because of their greater size and lifespan than may be detectable in lower trophic organisms. Blood samples were collected …
Assessing Maasai Attitudes And Perceptions Toward Vultures: A Case Study Of Resident Maasai Around Maasai Mara National Reserve, Kenya., Eric Reson
All Theses
The vulture population is declining globally, a situation that is more acute in the Maasai Mara region of Kenya where studies report over 60% decline in the last few years, resulting primarily from loss of habitat and poisoning by the Maasai pastoralist. This rate of decline is devastating and will result in the extinction of vultures in the region. Given that the causes of the decline are as a result of detrimental human activities, it is important to understand the Maasai attitude and perception toward vultures, particularly factors that determine their behavior to favor or oppose vulture conservation. In this …
Biomarker Effects In Sunfish And Bass From The Saluda River, Sc, Jessica Mierzejewski
Biomarker Effects In Sunfish And Bass From The Saluda River, Sc, Jessica Mierzejewski
All Theses
The upstate and Piedmont region of South Carolina is a rapidly urbanizing area with a fast growing population. This increase in population and development has the potential to negatively impact the aquatic system due to increased pollution from runoff and effluents from industrial, manufacturing and wastewater treatment facilities. In 2009 the Saluda River, a major river in this area of the state, was ranked 6th of America's most endangered rivers by American Rivers. This ranking was largely due to high phosphorus levels in the river, though there are many sources of pollution that may be affecting the river ecosystem. The …
Reproductive Ecology Of American Oystercatchers In The Cape Romain Region Of South Carolina: Implications For Conservation, Samantha Collins
Reproductive Ecology Of American Oystercatchers In The Cape Romain Region Of South Carolina: Implications For Conservation, Samantha Collins
All Theses
The Cape Romain Region (CRR) is located along the coast of South Carolina and supports over half of the breeding pairs (approximately 200 pairs) of American Oystercatchers (Haematopus palliatus) in the state. Research has shown that oystercatcher productivity in this area is low due to predation and over-wash from high tides and boat wakes. I assessed the feasibility of using headstarting as a means of reducing nest loss in an attempt to enhance reproductive success during the 2010 and 2011 breeding seasons. Apparent nest success of headstarted nests (52%) was higher than control nests (11%) along two study areas within …
Best Management Practices For Reducing Coyote Depredation On Loggerhead Sea Turtles In South Carolina, Trent Eskew
Best Management Practices For Reducing Coyote Depredation On Loggerhead Sea Turtles In South Carolina, Trent Eskew
All Theses
Sea turtles are one of the most recognizable and charismatic marine species worldwide that continue to be the focus of many conservationists. However, their populations and habitat continue to decline at an alarming rate due to predation, development, pollution, rising sea levels, beach erosion, and commercial fishing. Consequently, maximizing nest production in current nesting regions is fundamental to sea turtle recovery efforts. On the southeastern coast, coyotes (Canis latrans) and sea turtles have a relatively new relationship, but the presence of this latest predator has dramatically reduced sea turtle nesting success in certain areas. An active predator management strategy for …
Ecology Of The American Mink & The Potential Impact On Species Of Concern In Cape Romain National Wildlife Refuge, South Carolina, Caroline Gorga
Ecology Of The American Mink & The Potential Impact On Species Of Concern In Cape Romain National Wildlife Refuge, South Carolina, Caroline Gorga
All Theses
Species reintroduction projects are becoming more common as a conservation tool to reestablish populations following extirpation. The implementation of these projects can be controversial due to the potential impact the reintroduced animal could have on endangered, threatened, or at risk prey species. In 1999, South Carolina's Department of Natural Resources (SCDNR) reintroduced the American mink (Neovison vison), a SCDNR designated species of high conservation priority, to the northern coastal marshes of the state, including Cape Romain National Wildlife Refuge (CRNWR). In order to estimate the impact of this opportunistic predator on other species, especially those of special concern to the …
Using Bald Eagles To Monitor Hydroelectric Projects Liscense Requirements Along The Au Sable, Manistee And Muskegon River, Michigan, Peter Datema
All Theses
Consumers Energy operated hydroelectric projects located along the Au Sable, Manistee, and Muskegon Rivers underwent environmental studies in the late 1980s and early 1990s as part of the Federal Energy Regulatory Commission relicensing. One of the questions posed during these studies was, would passage of Great Lakes' fishes over barrier dams along these rivers cause detrimental impacts to sensitive wildlife species. Relicensing also required that the operation of all hydroelectric projects on the Au Sable, Manistee, and Muskegon rivers be maintained as run-of-river. Bald eagles (Haliaeetus leucocephalus) were chosen as a biomonitor. This risk assessment included calculating new hazard quotients …
Avian Communities And Landscape Characteristics Of Golf Courses Within The Beaufort County Sea Island Complex, Jessica Gorzo
Avian Communities And Landscape Characteristics Of Golf Courses Within The Beaufort County Sea Island Complex, Jessica Gorzo
All Theses
The native breeding bird community of Beaufort County, South Carolina is experiencing landscape alteration in several forms. A prevalent human land use in the coastal zone is golf course development. This study explored the relationship between golf course land cover (n=23) and avian community metrics. Each study site consisted of the in-play area of the golf course, surrounded by a 400 m zone. Landscape metrics were calculated for each study site, and served as independent variables. The dependent variables were the following avian community metrics: species richness, neotropical migrant richness, abundance, diversity, evenness, and mean Partners in Flight (PIF) score. …