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Pages
- Title
- Florida Local Government Conservation Planning: Variability, Drivers, and Policy Implications.
- Creator
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Pannozzo, Pamela, Noss, Reed, Quintana-Ascencio, Pedro, Hinkle, Charles, Knox, Claire, University of Central Florida
- Abstract / Description
-
This study examined the quality of Florida county government conservation planning. To assess conservation planning quality, a theoretical model of conservation planning as prescribed by the conservation science literature was first developed. A plan evaluation coding protocol was applied to local comprehensive plan Conservation Elements to determine the extent to which county-level conservation planning met the theoretical model. A high degree of variability in conservation planning quality...
Show moreThis study examined the quality of Florida county government conservation planning. To assess conservation planning quality, a theoretical model of conservation planning as prescribed by the conservation science literature was first developed. A plan evaluation coding protocol was applied to local comprehensive plan Conservation Elements to determine the extent to which county-level conservation planning met the theoretical model. A high degree of variability in conservation planning quality was found. Highest quality conservation planning occurred in the Gulf coast counties of southwest Florida. Lowest conservation planning quality occurred in the Florida Panhandle counties. The quality of conservation planning of coastal counties was significantly higher than that of inland counties. Significant regional differences were also found, where conservation planning quality in South Florida counties was significantly higher than conservation planning quality in Panhandle counties. Geographic differences in conservation planning quality were likely attributable to significant differences in socioeconomic variables among counties, including differences in education, wealth, and urbanization. Multiple regression analysis using an information theoretic approach was employed to develop a predictive model of conservation planning quality of Florida local governments. The two most plausible predictors in the model were education level of the public and total resources. Local and global spatial autocorrelation analysis were next applied to county conservation planning scores to investigate spatial patterns of conservation planning quality, which were found to be related to the policy process of diffusion. Lastly, current local government conservation planning policy was analyzed for effectiveness and policy recommendations were made. Improving the effectiveness of local conservation planning will require changes in statutory provisions of the state Florida Forever and Growth Management statutes. It will also require a greater commitment on the part of the state of Florida to protect the state's biological resources over the long term.
Show less - Date Issued
- 2013
- Identifier
- CFE0005041, ucf:49971
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005041
- Title
- THERAPY OPTIONS FOR WINGED SCAPULA PATIENTS: A LITERATURE REVIEW.
- Creator
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Normand, Samantha L, Burr, Joyce, University of Central Florida
- Abstract / Description
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Winged scapula is a condition characterized by lateral or medial protrusion of the scapula caused by nerve damage leading to muscular paralysis. The purpose of this systematic review of literature is to evaluate the current research literature related to the effectiveness of therapy options for winged scapula. Eleven peer reviewed English language research articles published from 1998 to present were included for evaluation. Study results revealed positive therapeutic outcomes for physical...
Show moreWinged scapula is a condition characterized by lateral or medial protrusion of the scapula caused by nerve damage leading to muscular paralysis. The purpose of this systematic review of literature is to evaluate the current research literature related to the effectiveness of therapy options for winged scapula. Eleven peer reviewed English language research articles published from 1998 to present were included for evaluation. Study results revealed positive therapeutic outcomes for physical therapy and scapular bracing. Results also showed positive outcomes for the use of transcutaneous electrical nerve stimulation and acupuncture for the treatment of nerve related conditions similar to winged scapula. Additional research is needed to evaluate the effectiveness of transcutaneous electrical nerve stimulation and acupuncture for winged scapula patients specifically.
Show less - Date Issued
- 2016
- Identifier
- CFH2000078, ucf:45527
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000078
- Title
- Unearthing the past and present of a semi-fossorial lizard: conservation genetics, phylogeography, and taxonomy of Plestiodon egregius.
- Creator
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Mercier, Kathryn, Savage, Anna, Parkinson, Christopher, Jenkins, David, University of Central Florida
- Abstract / Description
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Characterizing an organism's evolutionary history and population structure as well as understanding the forces shaping that divergence is crucial to conservation biology. A clear understanding of the patterns of diversity and divergence are imperative for the best management ofthe organism, while an awareness of what drives these patterns can lead to better predictions of how organisms will respond to future climate change. Historical climate changes and associated sea levelchange are among...
Show moreCharacterizing an organism's evolutionary history and population structure as well as understanding the forces shaping that divergence is crucial to conservation biology. A clear understanding of the patterns of diversity and divergence are imperative for the best management ofthe organism, while an awareness of what drives these patterns can lead to better predictions of how organisms will respond to future climate change. Historical climate changes and associated sea levelchange are among the main forces driving divergence in many species. To examine how effects of climate changes may have driven patterns of intraspecific divergence, I examined Mole Skinks,Plestiodon egregius, a semi-fossorial lizard of conservation concern. First, I characterized P. egregius evolutionary history and population structure using multiple data sources: morphological characters,mitochondrial sequences (mtDNA), and genome-wide single nucleotide polymorphisms (SNPs). I determined that SNP data distinguished population structure at a finer resolution than morphologyor mtDNA. From these data, I defined six conservation units within P. egregius, three of which are consistent with current subspecific taxonomy. Next, I used statistical phylogeography to examinehow the effects of historical climate change in the southeastern United States (US) may have driven patterns of intraspecific divergence in P. egregius. I devised a set of alternative hypotheses regardingthe historical distribution and dispersal of P. egregius to test using genome-wide SNP markers. I found support for a historical refugia within the southern scrub ridges in Florida followed byexpansion into the Florida peninsula and mainland US. Synthesizing the results from both studies, I evaluate the current subspecific taxonomy and discuss the conservation of P. egregius. Overall, Iconclude that P. egregius evolutionary history has been driven by historical sea level changes in the southeastern US, and that insular populations should be the focus of conservation efforts.
Show less - Date Issued
- 2018
- Identifier
- CFE0007225, ucf:52228
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007225
- Title
- Indirect estimates of gene flow and conservation implications in the striped newt (Notophthalmus perstriatus).
- Creator
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May, Sarah, Hoffman, Eric, Parkinson, Christopher, Johnson, Steve, University of Central Florida
- Abstract / Description
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This study used indirect methods to estimate patterns of gene flow in a rare salamander species, the striped newt (Notophthalmus perstriatus). First, we used combined genetic and ecological methods to determine whether populations that appear to exist in two regions separated by 125 km, exhibited genetic and ecological distinctness such that the regions demarcate separate conservation units. Using mtDNA (cyt-b), we found that haplotypes were shared between localities within each region but...
Show moreThis study used indirect methods to estimate patterns of gene flow in a rare salamander species, the striped newt (Notophthalmus perstriatus). First, we used combined genetic and ecological methods to determine whether populations that appear to exist in two regions separated by 125 km, exhibited genetic and ecological distinctness such that the regions demarcate separate conservation units. Using mtDNA (cyt-b), we found that haplotypes were shared between localities within each region but none were shared between regions. Niche-based distribution modeling revealed significant differences in the ecological setting between the two regions. In combination, the absence of evidence for recent genetic exchange and model-based support for differing ecological conditions utilized by newts between regions provides evidence that eastern and western populations are both distinct and significant. This study suggests a framework to evaluate discreteness and significance among populations for assessment of distinct population segments (DPSs which can be used as a conservation tool for many species. Second, we used microsatellites to characterize patterns of population connectivity, genetic differentiation, and effective population size in N. perstriatus. We assessed these patterns by testing several a priori hypotheses regarding the influence of gene flow and genetic drift on the distribution of genetic variation among and within populations. Interestingly, several of our results did not conform to our hypotheses. For example, our assessment did not reveal a significant pattern of isolation by distance among populations in this study. Additionally, we found that effective population sizes and genetic diversity of isolated populations were higher than expected. We discuss our results relate to our a priori hypotheses and we address the general question of why this species exhibited patterns contrary to what we expected given previous data on this taxon and other studies of similar taxa
Show less - Date Issued
- 2011
- Identifier
- CFE0004481, ucf:49311
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004481
- Title
- Shovels and guns: The CCC in action.
- Creator
-
Lasswell,James
- Date Issued
- 1935
- Identifier
- 368033, CFDT368033, ucf:5377
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/FCLA/DT/368033
- Title
- A CASE-STUDY OF THE AFRICAN LEOPARD (PANTHERA PARDUS PARDUS) POPULATION ON THE NAMBITI PRIVATE GAME RESERVE.
- Creator
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Castaneda, Erica, Borgon, Robert, University of Central Florida
- Abstract / Description
-
The Nambiti Private Game Reserve in KwaZulu-Natal, South Africa is a nature reserve that aids in the conservation of some of the world's most renown species. This includes members of the "Big Five," which is comprised of the African lion (Panthera leo), the African elephant (Loxidonta africana), the Cape buffalo (Syncerus caffer), the black and white rhinoceroses (Diceros bicornis and Ceratotherium simum, respectively), and the African leopard (Panthera pardus pardus). These animals represent...
Show moreThe Nambiti Private Game Reserve in KwaZulu-Natal, South Africa is a nature reserve that aids in the conservation of some of the world's most renown species. This includes members of the "Big Five," which is comprised of the African lion (Panthera leo), the African elephant (Loxidonta africana), the Cape buffalo (Syncerus caffer), the black and white rhinoceroses (Diceros bicornis and Ceratotherium simum, respectively), and the African leopard (Panthera pardus pardus). These animals represent the top five African animals desired by trophy hunters and by tourists hoping to view wildlife (Caro and Riggio, 2014). While studies concerning the African leopard population status have been completed on surrounding game reserves (Balme et al., 2009; Chapman and Balme, 2010), there have not been any studies done investigating the African leopard population on Nambiti. It is important that the population on Nambiti be identified since conservation management of leopards is largely influenced by their population numbers. For example, southern African countries rely on population estimates to establish trophy hunting quotas (Balme et al., 2010). Furthermore, knowledge on the reserve's leopard population can also lead to ecotourism benefits by attracting tourists to visit areas of known leopard activity (Lindsey et al., 2007). This case study investigated baited camera trapping footage, obtained by Nambiti rangers between May 2015 - May 2017, to determine the African leopard population on Nambiti. Camera footage results revealed that there were four leopards identified in six different locations on the reserve between May 2015 - May 2017. Baited Location J in the Western region of the reserve showed the greatest amount of leopard activity, indicating that it is the baited location most likely to provide ecotourism benefits. Furthermore, 23 non-target species were identified from the camera trapping footage, providing insight into the reserve's biodiversity, prey availability, and competition among predators.
Show less - Date Issued
- 2018
- Identifier
- CFH2000285, ucf:45908
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000285
- Title
- ENERGY-USE BEHAVIOR AMONG COLLEGE STUDENTS.
- Creator
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O'Connell, Lillian, Canan, Penelope, University of Central Florida
- Abstract / Description
-
As the effects of global climate change become increasingly apparent, many concerned individuals are making efforts to reduce their greenhouse gas emissions. One simple and effective method of reducing oneÂÂ's personal carbon footprint is through energy conservation behavior. Studies have shown that occupant behavior can control as much as 50% of residential energy use and that energy use varies widely between residences with the same number of occupants depending on...
Show moreAs the effects of global climate change become increasingly apparent, many concerned individuals are making efforts to reduce their greenhouse gas emissions. One simple and effective method of reducing oneÂÂ's personal carbon footprint is through energy conservation behavior. Studies have shown that occupant behavior can control as much as 50% of residential energy use and that energy use varies widely between residences with the same number of occupants depending on consumption behavior. In light of this, energy conservation behavior is a valuable method of reducing greenhouse gas emissions and curbing the effects of climate change. Motivating people to conserve energy could have profound positive effects on the environment. The following study applies Icek AjzenÂÂ's Theory of Planned Behavior (1991) to energy conservation behavior among college students in the state of Florida. This research tests the hypothesis that pro-environmental attitudes, influence of peers, and a high level of perceived control over behavior have a significant impact on energy conservation behavior.
Show less - Date Issued
- 2010
- Identifier
- CFE0003183, ucf:48614
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003183
- Title
- The Path of a Stressed Temporary Worker to CWB.
- Creator
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Striler, Jamie, Shoss, Mindy, Jex, Steve, Ehrhart, Mark, University of Central Florida
- Abstract / Description
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Temporary workers may experience unique and oftentimes stressful work situations that can precipitate negative outcomes for these workers, their coworkers, and their organizations. The current study considered broader implications of the various work experiences among temporary workers by testing the relationships of workplace stressors to temporary workers' behaviors. The workplace stressors examined were chosen based on their salience to temporary workers as shown throughout the current...
Show moreTemporary workers may experience unique and oftentimes stressful work situations that can precipitate negative outcomes for these workers, their coworkers, and their organizations. The current study considered broader implications of the various work experiences among temporary workers by testing the relationships of workplace stressors to temporary workers' behaviors. The workplace stressors examined were chosen based on their salience to temporary workers as shown throughout the current temporary worker literature, and included economic stressors, interpersonal mistreatment, and organizational constraints. It was hypothesized that these stressors would predict temporary workers' behaviors via emotional exhaustion and moral disengagement pathways, predicting the performance of counterproductive work behaviors (CWB). Three waves of data were collected from multiple sources, including at a temporary staffing agency, at a large university, and using the MTurk platform. Results showed that the temporary workers varied in their experiences of workplace stressors, which were linked to both cognitive and emotional reactions, which consequently predicted CWB. More specifically, temporary workers who experienced higher levels of workplace stressors reported higher levels of emotional exhaustion and moral disengagement, and then these reactions were linked to an increased likelihood of performing behaviors that are harmful to the organization and/or others within the organization.
Show less - Date Issued
- 2019
- Identifier
- CFE0007730, ucf:52414
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007730
- Title
- The behavior of humans and wildlife with respect to roads: insights for mitigation and management.
- Creator
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Grace, Molly, Noss, Reed, Weishampel, John, Hoffman, Eric, Johnson, Steve, University of Central Florida
- Abstract / Description
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Road ecology is the study of how roads and wildlife interact. Traditionally, road ecologists have primarily focused on one effect of roads: roadkill. Though roadkill can have devastating effects on wildlife populations, roads have sub-lethal impacts that are gaining more and more attention from the scientific community. These sub-lethal impacts include noise, light, and chemical pollution as well as altered habitat structure, which can all influence animal behavior. In this dissertation, I...
Show moreRoad ecology is the study of how roads and wildlife interact. Traditionally, road ecologists have primarily focused on one effect of roads: roadkill. Though roadkill can have devastating effects on wildlife populations, roads have sub-lethal impacts that are gaining more and more attention from the scientific community. These sub-lethal impacts include noise, light, and chemical pollution as well as altered habitat structure, which can all influence animal behavior. In this dissertation, I applied a behavioral ecology framework to study specific lethal and sub-lethal road effects with the goal of improving mitigation efforts. In Chapters 1 and 2, I evaluated how human behavior may be modified to reduce wildlife-vehicle collisions; traditionally efforts have been made to modify wildlife road crossing behavior. I found that Roadside Animal Detection Systems, which warn drivers when animals are near the road, are successful in reducing crash risk; however, care must be taken to ensure that drivers do not become acclimated to the warning system. In Chapters 3 and 4, I evaluated how traffic noise affects subadult growth and adult abundance and communication of anuran amphibians (frogs and toads), a taxon widely recognized as one of the most negatively impacted by roads. I found that through traffic noise alters tadpole behavior, it does not appear to have a negative effect on their growth. Traffic noise does, however, negatively affect adult anuran abundance. My results indicate that this reduction in abundance is caused by the interference of traffic noise with anuran communication.
Show less - Date Issued
- 2017
- Identifier
- CFE0006595, ucf:51275
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006595
- Title
- The Politics of the Righteous: A Religious and Political History of Conservative Neo-Evangelicals in Central Florida.
- Creator
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Lloyd, Rustin, Crepeau, Richard, Sacher, John, Larson, Peter, University of Central Florida
- Abstract / Description
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In 1953 a small, seemingly insignificant, church was founded in Winter Park, Florida. By the early 1970s, Calvary Assembly of God, a church that had started with a dirt floor, was declared one of the fastest growing churches in America with membership easily reaching over several thousands. In the late 1970s and 1980s, it became a major religious and political force in central Florida so much so that it had received visits from then presidential hopefuls Pat Robertson and Vice President...
Show moreIn 1953 a small, seemingly insignificant, church was founded in Winter Park, Florida. By the early 1970s, Calvary Assembly of God, a church that had started with a dirt floor, was declared one of the fastest growing churches in America with membership easily reaching over several thousands. In the late 1970s and 1980s, it became a major religious and political force in central Florida so much so that it had received visits from then presidential hopefuls Pat Robertson and Vice President George Bush. The changes that took place at Calvary Assembly, both politically and religiously, provided a microcosm of the rest of the nation, while at the same time, these changes made Calvary a leader within the charismatic neo-evangelical subculture. The incredible growth of Calvary Assembly is part of a larger narrative on the expansion of neo-evangelicalism, and more specifically, the charismatic movement in the 1970s and 1980s, as well as, the growth of central Florida. As a result of their growth Calvary was able to launch, and participate in, many programs on both the local and national level. Religious orthodoxies seeped into the political and social thought of those at Calvary, which influenced, and helped to explain, how the church became politically active.Part I examines the growth of Calvary within the context of the growth of Central Florida and the growth of the charismatic movement, This section will include the founding of Charisma magazine, major national events such as the Jesus Festivals, and the impact of charismatic revivalists. The impact of Calvary on the local community is another part of the story.Part II addresses the political bloc Calvary produced in central Florida. The church participated in and influenced national rallies such as (")Washington for Jesus.(") It shared its political views with central Florida through bulletins like Insight, which addressed moral issues like pornography, homosexuality, education and abortion. Calvary also used events like Freedom Celebration, and articles in Charisma to promote its views on American freedom. As a result local and national politicians and political groups recognized Calvary Assembly as a political powerhouse. Another part of the story is that Calvary and central Florida represented the local side of a national story on evangelicalism and national politics.
Show less - Date Issued
- 2013
- Identifier
- CFE0004880, ucf:49646
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004880
- Title
- POLITICIAL CONSERVATISM AND ITS EFFECTS ON MEMORY AND BASIC RECALL.
- Creator
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Caine, Simon, Smither, Janan, University of Central Florida
- Abstract / Description
-
The purpose of this study was to investigate how conservatism affects a person's perception of everyday details. It is hypothesized that there will be a positive correlation between the participants' conservative ratings and the amount of details from the readings they recall that are also conservative. This will also mean that there will be a negative correlation between the participants scoring higher on the conservatism scale and the amount of liberal details they recall. A similar pattern...
Show moreThe purpose of this study was to investigate how conservatism affects a person's perception of everyday details. It is hypothesized that there will be a positive correlation between the participants' conservative ratings and the amount of details from the readings they recall that are also conservative. This will also mean that there will be a negative correlation between the participants scoring higher on the conservatism scale and the amount of liberal details they recall. A similar pattern is expected to be discovered pertaining to participants that identify as more liberal. How is this measured? The participants will be asked to rate the their political views on a scale of 1-6, 1 being extremely liberal, and 6 being extremely conservative. A transcript of a political debate will contain views that are both conservative and liberal. Each view will be backed up by details supporting each of a candidate's policies. The transcript will include minor grammatical errors including punctuation, spelling, and tenses, all of which the participant will be asked to correct. Following this will be a mathematical task which will include converting mixed numbers to improper fractions at the difficulty of a fifth grade level. A memory recall task will then be administered to the participants asking them to recall as many of the details from the debate as possible.
Show less - Date Issued
- 2011
- Identifier
- CFH0003773, ucf:44745
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0003773
- Title
- Energy aware design and analysis for synchronous and asynchronous circuits.
- Creator
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Di, Jia, Yuan, Jiann S., Engineering and Computer Science
- Abstract / Description
-
University of Central Florida College of Engineering Thesis; Power dissipation has become a major concern for IC designers. Various low power design techniques have been developed for synchronous circuits. Asynchronous circuits, however have gained more interests recently due to their benefits in lower noise, easy timing control, etc. But few publications on energy reduction techniques for asynchronous logic are available. Power awareness indicates the ability of the system power to scale...
Show moreUniversity of Central Florida College of Engineering Thesis; Power dissipation has become a major concern for IC designers. Various low power design techniques have been developed for synchronous circuits. Asynchronous circuits, however have gained more interests recently due to their benefits in lower noise, easy timing control, etc. But few publications on energy reduction techniques for asynchronous logic are available. Power awareness indicates the ability of the system power to scale with changing conditions and quality requirements. Scalability is an important figure-of-merit since it allows the end user to implement operational policy just like the user of mobile multimedia equipment needs to select between better quality and longer battery operation time. This dissertation discusses power /energy optimization and performs analysis on both synchronous and asynchronous logic.
Show less - Date Issued
- 2004
- Identifier
- CFR0001720, ucf:52913
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFR0001720
- Title
- Seascape genetics and rehabilitation efficiency in the Florida manatee.
- Creator
-
Hall, Madison, Worthy, Graham, Weishampel, John, Hoffman, Eric, Dyer, Rodney, University of Central Florida
- Abstract / Description
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The Florida manatee (Trichechus manatus latirostris) was recently downlisted federally from (")endangered(") to (")threatened(") despite acknowledgments of remaining threats to long term population persistence. Challenges to future manatee conservation include, but are not limited to, increases in frequency of harmful algal blooms, intensifying anthropogenic disturbance, and loss of warm-water habitat. The goals of this dissertation were 1) to assess threats to the manatee via a comprehensive...
Show moreThe Florida manatee (Trichechus manatus latirostris) was recently downlisted federally from (")endangered(") to (")threatened(") despite acknowledgments of remaining threats to long term population persistence. Challenges to future manatee conservation include, but are not limited to, increases in frequency of harmful algal blooms, intensifying anthropogenic disturbance, and loss of warm-water habitat. The goals of this dissertation were 1) to assess threats to the manatee via a comprehensive, long-term (1973-2016), retrospective analysis of the manatee rescue and rehabilitation partnership (MRRP) and 2) to use seascape genetics analysis to examine whether abiotic, biotic, or anthropogenic seascape variables could significantly describe genetic distance patterns in space for this genetically depauperate population. Results from the MRRP analysis revealed that anthropogenic threats were the most significant reason for manatees to be rescued and rehabilitated. Manatees rescued due to watercraft injuries spent long periods in recovery before succumbing or being released resulting in significant expense to the rehabilitation system. Additionally, the seascape genetics analysis indicated that watercraft activity best explained spatial genetic patterns in the manatee population. It is established that anthropogenic use of watercraft negative affects manatees through the mechanisms of sub-lethal injury and mortality, and these results suggest there may be further negative impacts via the disruption of population genetic connectivity. Future management practices should seriously consider manatee/vessel interactions as watercraft strikes are costly for management, place pressure on the manatee population, and could disrupt population gene flow with potentially dire consequences. Mitigating anthropogenic impacts on the Florida manatee population is critical for future conservation and should be a primary focus.
Show less - Date Issued
- 2019
- Identifier
- CFE0007647, ucf:52465
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007647
- Title
- Community-based coastal restoration: long term impacts on habitats and people in Volusia County.
- Creator
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Wimmer, Rachel, Walters, Linda, Donnelly, Melinda, Koontz, Amanda, University of Central Florida
- Abstract / Description
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Coastal habitats provide invaluable economic and ecosystem services. However, coastlines are eroding at increasing rates due to anthropogenic and climate driven changes. Grey and green infrastructure solutions have been proposed to retard the decay of coastlines, with oysters serving as a popular living shoreline. Three community-based stabilizations that implemented living shorelines and engaged local communities in restoration efforts over the past decade in Volusia County were revisited to...
Show moreCoastal habitats provide invaluable economic and ecosystem services. However, coastlines are eroding at increasing rates due to anthropogenic and climate driven changes. Grey and green infrastructure solutions have been proposed to retard the decay of coastlines, with oysters serving as a popular living shoreline. Three community-based stabilizations that implemented living shorelines and engaged local communities in restoration efforts over the past decade in Volusia County were revisited to determine if they were successful and if they produced positive public perceptions of success. Chicken Island, which was restored after waves, boat wakes, tides, and adverse weather altered the natural shoreline, had significant increases in oyster size and density but an unsuccessful deployment of mangrove seedlings. The Port Orange study site installed living shoreline along existing sea wall and experienced low oyster recruitment, limited success with S. alterniflora propagation, and high cover of bare sediment. The Mosquito Lagoon Marine Enhancement Center had high vegetative cover and biodiversity and decreases in oyster density likely due to the development of healthy, mature oyster reefs. A survey of volunteers who participated in these three restoration projects was also conducted to determine if there is a tie in ecosystem function produced through restoration and community perceptions of restoration success. While there were not enough survey responses to draw conclusions, the responses were indicative of the future research needed to understand volunteer identities and sense of place as they relate to the human-nature system. To improve the long-term success of living shorelines, it is critical to not only select restoration methods appropriate for the specific location of the restoration, but to involve local communities to increase sense of self and investment in restoration efforts.
Show less - Date Issued
- 2019
- Identifier
- CFE0007878, ucf:52781
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007878
- Title
- Livelihoods support programs, conservation attitudes, and tropical biodiversity: an evaluation of biocomplexity in southeastern Ghana.
- Creator
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Ekpe, Edem, Hinkle, Charles, Quigley, Martin, VonHolle, Mary, Weishampel, John, Uddin, Nizam, Owusu, Erasmus, Milon, Joseph, University of Central Florida
- Abstract / Description
-
Human activities are a major driver of biodiversity degradation and loss, especially in tropical forest areas, where forest-fringe towns and villages depend on the forests for their livelihoods. In order to reduce threats that human activities pose to biodiversity, livelihoods support programs are employed as economic incentives for biodiversity conservation. These programs support the livelihoods activities of local communities, with the aim of triggering favorable attitudes and behaviors...
Show moreHuman activities are a major driver of biodiversity degradation and loss, especially in tropical forest areas, where forest-fringe towns and villages depend on the forests for their livelihoods. In order to reduce threats that human activities pose to biodiversity, livelihoods support programs are employed as economic incentives for biodiversity conservation. These programs support the livelihoods activities of local communities, with the aim of triggering favorable attitudes and behaviors towards conservation, and ultimately reduce biodiversity degradation. Their effectiveness as conservation tools has not been evaluated. I investigated the effects of livelihoods programs on conservation attitudes and the consequent effects on biodiversity in the Afadjato-Agumatsa and Atewa forest areas in southeastern Ghana.The study areas are coupled human and natural systems, which are excellent for research in the theoretical framework of biocomplexity in the environment. Using literature reviews and field visits, I documented the specific livelihoods support activities (LSAs) used for biodiversity conservation, their historical trend and geographical distribution in Ghana. I used ex-post cost-benefit analysis to determine socio-economic estimates of the LSAs in the two forest areas. Since communities were not randomly assigned to the interventions, I employed quasi-experimental design to evaluate the effects of LSAs on environmental attitudes. I evaluated the effect of conservation attitudes on biodiversity at two levels. These levels included 1) functional biodiversity at the landscape level represented by mean Normalized Difference Vegetation Index (NDVI) of forest; and 2) compositional biodiversity at the species level represented by species diversity of fruit bats. The earliest record of LSAs used for biodiversity conservation in Ghana was in 1993. I identified 71 different activities belonging to eight categories. Some of these activities are beekeeping, animal husbandry, crop farming, and snail rearing. Most LSA programs have been in northern Ghana. There was an increasing tendency to make LSAs part of every conservation program in Ghana and this satisfies the current policy of collaborative conservation.The socio-economic estimates of LSAs included: 1) capital investment; 2) net socio-economic benefits; and 3) the benefit-cost ratio. The per-community values of the three estimates were not different between the two study areas. The per capita values of capital investment and net economic benefit were not significantly different between the two study areas. However, benefit-cost ratio per capita was higher in Afadjato-Agumatsa than in Atewa. Estimates of economic returns from LSAs were marginal but the perceptions of success were relatively high.Environmental attitudes in LSA communities and non-LSA communities were not significantly different, and this was confirmed by an estimate of infinitesimal effects of LSAs on forest conservation attitudes. Among LSA communities, benefit-cost ratio of LSAs predicted favorable forest conservation attitudes; and change in pro-conservation attitudes were significantly higher in communities that had active LSAs than in communities which had no active LSA.Mean NDVI of the forests decreased from 1991 to 2000 and decreased further but at a slower rate to 2010. Higher forest conservation attitudes predicted higher mean NDVI in 2010. Higher change in mean NDVI from 1991 to 2000 predicted higher change in mean NDVI from 2000 to 2010. Eleven of the 13 fruit bat species in Ghana were recorded in the study areas. Longer distances between a local community and its forest predicted higher species diversity of forest-specialist fruit bats.The results indicate that LSAs have become a major contribution to Ghana's current collaborative forest policy. The fact that perceptions of LSA success were moderate even though the economic returns from them were marginal suggest that other factors such as provision of employment, training in new skills and community cohesion played a part in how communities viewed the success as LSAs. Evaluations of conservation attitudes suggest that just participating in LSAs did not improve attitudes; but higher benefit-cost ratio predicted favorable conservation attitudes, and conservation attitudes were higher in communities that sustained their LSAs. Therefore, it may serve biodiversity conservation to invest in LSAs that can be sustained and involve the least costs to local communities. Primary production of the forests, a proxy for a functional habitat, continued to decrease. Preventing communities from locating closer to forests could improve fruit bat diversity, which contributes to natural forest regeneration. Improving conservation attitudes should be an objective of conservation at the landscape scale.On the basis of the results, I developed a conceptual model for forest biodiversity conservation in a biocomplexity framework. This model could be useful for evaluating conservation in tropical forest areas. Lessons from this study can be applied in other incentive-based conservation programs such as payments for ecosystem services systems and carbon market schemes. I suggest that this study be repeated after a decade and that other socio-political and biogeochemical variables be integrated into future studies.
Show less - Date Issued
- 2012
- Identifier
- CFE0004246, ucf:49511
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004246
- Title
- TAXONOMY VERSUS PHYLOGENY: PHYLOGEOGRAPHY OF MARSH RABBITS WITHOUT HOPPING TO CONCLUSIONS.
- Creator
-
Tursi, Rosanna, Hoffman, Eric, University of Central Florida
- Abstract / Description
-
Subspecific taxonomic designations solely based on morphological characters can often lead to erroneous assumptions about the evolutionary history of populations. This study sought to investigate evolutionary questions and conservation implications associated with morphological subspecific designations of island populations. To this end, I focused my attention on the Lower Keys of Florida, a unique chain of islands with well-known geologic history and rich in endemic, endangered subspecies. I...
Show moreSubspecific taxonomic designations solely based on morphological characters can often lead to erroneous assumptions about the evolutionary history of populations. This study sought to investigate evolutionary questions and conservation implications associated with morphological subspecific designations of island populations. To this end, I focused my attention on the Lower Keys of Florida, a unique chain of islands with well-known geologic history and rich in endemic, endangered subspecies. I employed genetic analyses to evaluate historical variation and contemporary restriction of gene flow between the endangered Lower Keys marsh rabbit (Sylvilagus palustris hefneri) and its sister mainland taxa. A Bayesian phylogeny using 1063 base pairs of the mitochondrial cytochrome b gene did not recover reciprocal monophyly of the three named subspecies, and a 95% statistical parsimony haplotype network showed haplotypes being shared among subspecies. Furthermore, clustering analyses using 10 microsatellite loci identified a break within the Lower Keys, separating the western Lower Keys from the island of Big Pine Key. Surprisingly, Big Pine Key grouped with mainland populations and exhibits higher genetic diversity than the western Lower Keys islands. These unexpected findings suggest either a stepping-stone colonization pattern or recent gene flow between the mainland and Big Pine Key via natural dispersal or undocumented man-mediated transfers. Although these results suggest that subspecies designations within S. palustris are unwarranted, this study supports the designation western Lower Keys population as a discrete unit of conservation with regard to both DPS and ESU criteria. The importance of using several lines of evidence to uncover the evolutionary history of populations and implications for the conservation of island populations are discussed.
Show less - Date Issued
- 2010
- Identifier
- CFE0003418, ucf:48380
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003418
- Title
- FACTORS AFFECTING PREDATION OF MARINE TURTLE EGGS BY RACCOONS AND GHOST CRABS ON CANAVERAL NATIONAL SEASHORE, FL.
- Creator
-
Brown, Justin, Roth, James, University of Central Florida
- Abstract / Description
-
Changes in abundance of interactive species can have cascading, community-wide effects (Soulé et al. 2003). Raccoons (Procyon lotor) prey on a competitor for marine turtle eggs, the Atlantic ghost crab (Ocypode quadrata). Conservation of marine turtles often includes managing raccoons--the most obvious egg predator--which may have broader ecological effects, and unknown effects on egg predation. Neither the relationship between raccoons and ghost crab density nor the effects of ghost...
Show moreChanges in abundance of interactive species can have cascading, community-wide effects (Soulé et al. 2003). Raccoons (Procyon lotor) prey on a competitor for marine turtle eggs, the Atlantic ghost crab (Ocypode quadrata). Conservation of marine turtles often includes managing raccoons--the most obvious egg predator--which may have broader ecological effects, and unknown effects on egg predation. Neither the relationship between raccoons and ghost crab density nor the effects of ghost crab density on egg predation are well understood. I studied raccoon-ghost crab interactions and the effects of environmental variation on their activity during the 2007 marine turtle nesting season on Canaveral National Seashore, FL. My goal was to model predator activity and identify efficient management strategies to reduce egg predation. Raccoon activity increased with increasing habitat diversity and edge of the dominant cover type, coastal strand. Raccoon activity increased locally and became less variable near segments of beach accessed for human recreation, but activity was greater on undeveloped beach, where habitat diversity and edge were greater. Ghost crab density and size were primarily affected by sand characteristics and recreation but decreased with increasing raccoon activity in June, which may have contributed to sustained declines in ghost crab density. Hatching success of marine turtles decreased with increasing ghost crab egg predation, suggesting ghost crabs are an important cause of egg mortality and not merely scavengers on unhatched eggs. Egg predation by ghost crabs was unrelated to ghost crab density or size, likely a result of monitoring limitations, but raccoon activity increased with increasing egg predation by ghost crabs, supporting previous research and experimental evidence suggesting ghost crabs can facilitate secondary nest predation by raccoons. This indirect interaction has strong implications for marine turtle conservation, because its strength may increase with increasing ghost crab density, potentially negating the effects of raccoon removal.
Show less - Date Issued
- 2009
- Identifier
- CFE0002667, ucf:48235
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002667
- Title
- CLONALITY AND GENETIC DIVERSITY IN POLYGONELLA MYRIOPHYLLA, A LAKE WALES RIDGE ENDEMIC PLANT.
- Creator
-
Metzger, Genevieve, Parkinson, Christopher, University of Central Florida
- Abstract / Description
-
Although capable of sexual reproduction, many plants also rely heavily on clonal reproduction. The formation of multiple, physiologically-independent units with the same genotype has important implications for spatial genetic structure and genetic diversity in these plants. The endangered scrub-dwelling perennial, Polygonella myriophylla is known to reproduce both sexually and clonally but no study to date has been able to investigate the spatial genetic patterns that occur in this species. I...
Show moreAlthough capable of sexual reproduction, many plants also rely heavily on clonal reproduction. The formation of multiple, physiologically-independent units with the same genotype has important implications for spatial genetic structure and genetic diversity in these plants. The endangered scrub-dwelling perennial, Polygonella myriophylla is known to reproduce both sexually and clonally but no study to date has been able to investigate the spatial genetic patterns that occur in this species. I use microsatellite markers to investigate questions about clonal structure and genetic diversity in five populations of P. myriophylla and address some of the implications of my findings for conservation of this species: Overall, I find that 57% of sampled clusters of P. myriophylla are composed of a single genet (genetic individual) with multiple physiological units (ramets) while the remainder are made up of two or more genets. I found differences in both clonal reproduction and genetic diversity among populations. I also found evidence of limited gene flow even over small spatial scales (less than 10 km) and for at least 4 genetic clusters occurring within the species range. Despite high levels of genetic diversity overall, there is evidence of reduced genetic diversity in two populations My results suggest that high levels of clonality may be important in maintaining genetic diversity in P. myriophylla. I also provide evidence that dirt roadsides may not represent a refuge for this species.
Show less - Date Issued
- 2010
- Identifier
- CFE0003264, ucf:48516
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003264
- Title
- Using Biomarkers to Assess the Migratory Ecology and Reproduction of the Florida Green Turtle (Chelonia mydas).
- Creator
-
Chabot, Ryan, Mansfield, Kate, Worthy, Graham, Seminoff, Jeffrey, University of Central Florida
- Abstract / Description
-
Migratory connectivity between breeding and foraging areas is a vital component of the ecology of a diverse collection of marine vertebrates. Habitat quality, composition, and resource availability at these locations have direct ramifications for individual fitness. The green turtle (Chelonia mydas) is a long-lived, highly migratory species of conservation concern. Important green turtle nesting habitat in Florida is protected, but more information is needed to identify foraging habitats and...
Show moreMigratory connectivity between breeding and foraging areas is a vital component of the ecology of a diverse collection of marine vertebrates. Habitat quality, composition, and resource availability at these locations have direct ramifications for individual fitness. The green turtle (Chelonia mydas) is a long-lived, highly migratory species of conservation concern. Important green turtle nesting habitat in Florida is protected, but more information is needed to identify foraging habitats and the influence these habitats have on reproduction. Here, I used stable isotope analysis of ?13C, ?15N, and ?34S and satellite telemetry validation to determine the number of putative foraging areas used by the breeding aggregation at the Archie Carr National Wildlife Refuge (ACNWR), and the relative contribution of each foraging area. I evaluated the influence of foraging area and other variables on egg size, clutch size, hatching success, and emerging success using model selection frameworks. Isotopic values of skin and eggs were used to build conversion equations between the two tissue types. Results suggest strong migratory connectivity between the ACNWR and the Florida Keys/Florida Bay complex. I found that the influences of foraging area are likely to be more detectable when evaluating female-centric fitness metrics like clutch size and egg size; these influences are more muted in hatching and emerging success, which are strongly influenced by nest incubation conditions. These are the first green turtle-specific tissue conversion equations for ?13C and ?15N, and the first ?34S equation for any marine turtle species. These will allow researchers to have a (")common currency(") between frequently collected samples to better compare results.
Show less - Date Issued
- 2017
- Identifier
- CFE0006574, ucf:51314
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006574
- Title
- MASS CONSERVATION ANALYSIS FOR THE LOWER ST. JOHNS RIVER USING CONTINUOUS AND DISCONTINUOUS GALERKIN FINITE ELEMENT METHODS.
- Creator
-
Thomas, Lillie, Hagen, Scott, University of Central Florida
- Abstract / Description
-
This thesis provides a mass conservation analysis of the Lower St. Johns River for the purpose of providing basis for future salinity transport modeling. The analysis provides an assessment of the continuous (CG) and discontinuous (DG) Galerkin finite element methods with respect to their mass conservation properties. The following thesis also presents a rigorous literature review pertaining to salinity transport in the Lower St. Johns River, from which this effort generates the data used to...
Show moreThis thesis provides a mass conservation analysis of the Lower St. Johns River for the purpose of providing basis for future salinity transport modeling. The analysis provides an assessment of the continuous (CG) and discontinuous (DG) Galerkin finite element methods with respect to their mass conservation properties. The following thesis also presents a rigorous literature review pertaining to salinity transport in the Lower St. Johns River, from which this effort generates the data used to initialize and validate numerical simulations. Two research questions are posed and studied in this thesis: can a DG-based modeling approach produce mass conservative numerical solutions; and what are the flow interactions between the river and the marshes within the coastal region of the Lower St. Johns River? Reviewing the available data provides an initial perspective of the ecosystem. For this, salinity data are obtained and assembled for three modeling scenarios. Each scenario, High Extreme, Most Variable, and Low Extreme, is 30 days long (taken from year 1999) and represents a unique salinity regime in the Lower St. Johns River. Time-series of salinity data is collected at four stations in the lower and middle reaches of the Lower St. Johns River, which provides a vantage point for assessing longitudinal variation of salinity. As an aside, precipitation and evaporation data is presented for seven stations along the entire St. Johns River, which provides added insight into salinity transport in the river. A mass conservation analysis is conducted for the Lower St. Johns River. The analysis utilizes a segmentation of the Lower St. Johns River, which divides the domain into sections based on physical characteristics. Mass errors are then calculated for the CG and DG finite element methods to determine mass conservative abilities. Also, the flow interactions (i.e., volume exchange) between the river and marshes are evaluated through the use of tidal prisms. The CG- and DG- finite element methods are then tested in tidal simulation performance, which the results are then compared to observed tides and tidal currents at four stations within the lower portion of the Lower St. Johns River. Since the results show that the DG model outperforms the CG model, the DG model is used in the tidally driven salinity transport simulations. Using four stations within the lower and middle part of the Lower St. Johns River, simulated and observed water levels and salinity concentrations are compared.
Show less - Date Issued
- 2011
- Identifier
- CFE0003736, ucf:48797
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003736
