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Comparison and differentiation in fossil and recent specimens of the melongenid subgenus Rexmela in Florida
Title
Comparison and differentiation in fossil and recent specimens of the melongenid subgenus Rexmela in Florida.
Creator
Pletka, Crystal., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description
The subgenus Rexmela, located primarily in Florida, is newly evolved, dating back 1.6 million years, first occurring in the Ayer's Landing Member of the Caloosahatchee Formation. This subgenus has highly variably shell morphology and has led to the erection of several species and subspecies. In order to provide a quantitative methodology with which to differentiate between populations, samples of Recent and fossil populations were collected and measured for a variety of parameters. The...
Show moreThe subgenus Rexmela, located primarily in Florida, is newly evolved, dating back 1.6 million years, first occurring in the Ayer's Landing Member of the Caloosahatchee Formation. This subgenus has highly variably shell morphology and has led to the erection of several species and subspecies. In order to provide a quantitative methodology with which to differentiate between populations, samples of Recent and fossil populations were collected and measured for a variety of parameters. The parameters measured included length, width, spire height, and several angles, and allowed for a discriminate analysis to be completed. The analysis supported the distinction of several of the populations as ecophenotypes. Paleoenvironments of the fossil populations were then recreated using analogues of Recent populations.
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Date Issued
2009
PURL
http://purl.flvc.org/FAU/187215
Subject Headings
Mollusks, Habitat, Gastropoda, Fossil, Aquatic invertebrates, Identification, Evolutionary paleobiology
Format
Document (PDF)
critical theory analysis of the disproportionate representation of blacks and males participating in Florida's special education programs
Title
A critical theory analysis of the disproportionate representation of blacks and males participating in Florida's special education programs.
Creator
Allen, Anthony G., College of Education, Department of Educational Leadership and Research Methodology
Abstract/Description
The Individuals with Disabilities Education Act (IDEA) of 1975 has made a profound impact on millions of children with disabilities who now enjoy their right to a free appropriate public education (FAPE). It is the goal of national policy, endorsed by Congress, to ensure equality of opportunity, full participation, independent living, and economic self-sufficiency for individuals with disabilities. With the enactment of IDEA, it ensures that all children, who participate in special education...
Show moreThe Individuals with Disabilities Education Act (IDEA) of 1975 has made a profound impact on millions of children with disabilities who now enjoy their right to a free appropriate public education (FAPE). It is the goal of national policy, endorsed by Congress, to ensure equality of opportunity, full participation, independent living, and economic self-sufficiency for individuals with disabilities. With the enactment of IDEA, it ensures that all children, who participate in special education programs, have equal access to education. However, since IDEA's inception, a disproportionate number of African Americans children have been placed, or rather, misplaced in special education programs. African American students are three times more likely than Whites to be placed into categories as needing services in special education programs, making them subject to less demanding schoolwork, to more restrictive classrooms, and to isolation from their peers. For the purpose of this study, the goals were (a) to determine if there is disproportional representation of Black students and male students in the three categories of Educable Mentally Handicapped, Emotionally Handicapped, and Specific Learning Disabled and (b) to address whether the factors school districts' socioeconomic status, minority rate, and racial composition of instructional and administrative staff predict the representation of Black students and male students who participate in special education programs. A quantitative method, including the three disproportionality calculation methods of Composition Index (CI), Risk Index (RI), and Odds Ratio (OR), was employed to respond to the six research questions and test six corresponding null hypotheses. Sixty-seven school districts in the State of Florida were identified for data collection and analysis., The enrollment data for the calculations covered AY 2005- 2009. Critical Race Theory (CRT) served as the lens through which to analyze the findings and discus the implications therein. It is clear that the problem of disproportionate representation is complex and the resolution to the problem is not an easy one. This study found that there was a relationship between the representation of Black students and male students in special education programs and the predictor variables. Statistical analyses revealed that socioeconomic status of the school district, minority rate, and racial composition of instructional and administrative staff predicted the disproportional representation. Critical Race Theory, which served as a methodological framework was employed to help in examining and challenging the manner in which race and racism clearly impacts practices and procedures in the special education referral process. CRT utilized the social construction of race and the role it plays in the education policies that affect minorities. As with any intellectual movement, CRT builds its scholarship upon certain theoretical pillars. The basic tenets of CR T include ordinariness, interest convergence, social construction, differential racialization, and legal story telling. For the purpose of this research, only the tenets of ordinariness, interest convergence, social construction, and differential racialization were examined in the context of disproportionate representation of black students and male students in special education.
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Date Issued
2010
PURL
http://purl.flvc.org/FAU/2867333
Subject Headings
Discrimination in educations, Racism in education, Education, Social aspects, Multicultural education, Learning disabled children, Identification
Format
Document (PDF)
Diatoms as a food source for Sorites dominicensis
Title
Diatoms as a food source for Sorites dominicensis.
Creator
Gaston, Tiffany., Harriet L. Wilkes Honors College
Abstract/Description
Sorites dominicensis is a common Foraminifera living on Thalassia testudinum seagrass blades in the Indian River Lagoon. This locality is unique because epiphytic diatoms, characteristic of Caribbean and temperate environments, are expected to make up the biofilm community. Diatoms compose a large part of the Foraminiferan diet. It is important to understand the cause and effect relationship of population variation between S. dominicensis and its preferred food source, since both are valuable...
Show moreSorites dominicensis is a common Foraminifera living on Thalassia testudinum seagrass blades in the Indian River Lagoon. This locality is unique because epiphytic diatoms, characteristic of Caribbean and temperate environments, are expected to make up the biofilm community. Diatoms compose a large part of the Foraminiferan diet. It is important to understand the cause and effect relationship of population variation between S. dominicensis and its preferred food source, since both are valuable bioindicators. We examined the selective feeding of S. dominicensis by first, identifying the diatom assemblage. Second, we utilized scanning electron microscopy (SEM) in order to identifying the remains of diatoms entrapped in pseudopodial nets and in debris piles. We found that Mastogloia and Cocconeis were the most prominent genera in the overall diatom assemblage. The food preference of S. dominicensis included Amphora, Berkeleya rutilans,Cocconeis, Licmophora dalmatica, Mastogloia, Odontella rhombus, Plagiogramma pulchellum var. pygmaeum, and Skeletonema.
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Date Issued
2008
PURL
http://purl.flvc.org/FAU/77667
Subject Headings
Diatoms, Identification, Wetland ecology, Stream ecology, Methodology
Format
Document (PDF)
Fishes of Savannas Preserve State Park
Title
Fishes of Savannas Preserve State Park.
Creator
McKee, Kristy., Harriet L. Wilkes Honors College
Abstract/Description
Freshwater marshes are a harsh wetland ecosystem classified by seasonal water level fluctuation. Dry down periods are common in some marshes, making life difficult for fish and other aquatic organisms. The goal of this study was to compile an updated species list of fishes inhabiting the freshwater marsh system within Savannas Preserve State Park. Twenty-three fish species were collected between August 2005 and May 2007. This survey, along with past collections, and the current species list...
Show moreFreshwater marshes are a harsh wetland ecosystem classified by seasonal water level fluctuation. Dry down periods are common in some marshes, making life difficult for fish and other aquatic organisms. The goal of this study was to compile an updated species list of fishes inhabiting the freshwater marsh system within Savannas Preserve State Park. Twenty-three fish species were collected between August 2005 and May 2007. This survey, along with past collections, and the current species list in the park's management plan were used to make a new proposed species list. Three species of nonnative fishes were observed during the study, the first report of exotic fishes in the park. It is believed that abnormally high water levels for an extended period may have allowed the water in neighboring canals to connect to the marsh system and, as a result, new species were able become introduced in the park.
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Date Issued
2007
PURL
http://purl.flvc.org/FAU/40970
Subject Headings
Savannas Preserve State Park (Fla.), Ecology, Fishes, Identification, Population biology
Format
Document (PDF)
Fishes of the Abacoa Greenway
Title
Fishes of the Abacoa Greenway.
Creator
Snow, Tiffany., Harriet L. Wilkes Honors College
Abstract/Description
The Abacoa Greenway is a manmade artificial water system constructed in the late 1990s, and home to an array of aquatic flora and fauna. There has been no previous survey of the species residing in this area; therefore this will be a foundation for future samplings to compare to. The goal of this study was to compile a species list of fishes inhabiting the freshwater systems of the Abacoa Greenway Ranges IV and V, as well as a classification of exotic and native species inhabiting the area. A...
Show moreThe Abacoa Greenway is a manmade artificial water system constructed in the late 1990s, and home to an array of aquatic flora and fauna. There has been no previous survey of the species residing in this area; therefore this will be a foundation for future samplings to compare to. The goal of this study was to compile a species list of fishes inhabiting the freshwater systems of the Abacoa Greenway Ranges IV and V, as well as a classification of exotic and native species inhabiting the area. A total of 11 species have been collected and identified between March 2007 and May 2008. Of these three species have been classified as exotic or introduced and the other eight as native species naturally existing in Florida.
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Date Issued
2008
PURL
http://purl.flvc.org/FAU/77693
Subject Headings
Greenways, Fishes, Identification, Population biology
Format
Document (PDF)
Manatee census of the Harbor Branch channel utilizing photo-identification techniques
Title
Manatee census of the Harbor Branch channel utilizing photo-identification techniques.
Creator
Nys, Lauren., Harriet L. Wilkes Honors College
Abstract/Description
Anecdotal accounts of manatees congregating in the Harbor Branch channel have been reported by staff scientists at the Harbor Branch Oceanographic Institute for over three decades. The main goals of this study were to identify individual manatees using photo-identification techniques and collect baseline data on manatee abundance and environmental parameters. During the primary study period (summer 2009), I identified 31 distinct manatees at Harbor Branch. Four manatees were matched with the...
Show moreAnecdotal accounts of manatees congregating in the Harbor Branch channel have been reported by staff scientists at the Harbor Branch Oceanographic Institute for over three decades. The main goals of this study were to identify individual manatees using photo-identification techniques and collect baseline data on manatee abundance and environmental parameters. During the primary study period (summer 2009), I identified 31 distinct manatees at Harbor Branch. Four manatees were matched with the statewide Manatee Individual Photo-identification System database. I observed the highest abundance of manatees in the small boats marina, suggesting that this location is preferential manatee habitat. Water temperature at the two deepest depths measured (0.6 m and 1.50 m) were the only two significantly different environmental parameters influencing the number of manatees present. The results of this study provide evidence for the Harbor Branch channel as an important manatee habitat.
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Date Issued
2010
PURL
http://purl.flvc.org/FAU/3335459
Subject Headings
Manatees, Monitoring, Manatees, Habitat, Manatees, Identification
Format
Document (PDF)