Open Access. Powered by Scholars. Published by Universities.®
- Publication
- Publication Type
Articles 1 - 8 of 8
Full-Text Articles in Entire DC Network
Diatom Diversity And Functional Groups In 72 Florida Lakes: Assessing Ecological Changes For Improved Protection And Management, Francesca M. Lauterman
Diatom Diversity And Functional Groups In 72 Florida Lakes: Assessing Ecological Changes For Improved Protection And Management, Francesca M. Lauterman
USF Tampa Graduate Theses and Dissertations
Florida lakes are diverse ecosystems and are an important part of the state's biodiversity and ecosystem services. As human population and development increase across the state, many lakes have been documented as nutrient impaired and are unable to maintain essential ecological functions. In this study, diatom diversity and functional groups in 72 Florida lakes were assessed for their relationships with associated water-quality data. Common alpha diversity indices, including Shannon-Weiner Index, the Gini-Simpson Index, and Hill’s numbers were utilized to measure trends in diatom communities, while the relationships between diatom lifeform characteristics and environmental data were explored using multivariate methods and …
Journey Mapping The Minority Student’S Path Toward Genetic Counseling: A Holistic Picture, Tatiana E. Alvarado-Wing
Journey Mapping The Minority Student’S Path Toward Genetic Counseling: A Holistic Picture, Tatiana E. Alvarado-Wing
USF Tampa Graduate Theses and Dissertations
Reasons for limited ethnic and racial diversity among genetic counselors in the United States may be elucidated through better understanding the experiences of minority students who are attending genetic counseling graduate programs as well as recent graduates. Semi-structured interviews were conducted with minority participants using Journey Mapping to elicit touchpoints that positively or negatively impact success at varying points on the path to becoming a genetic counselor. Touchpoints with negative impacts include; late awareness of the profession, observing the lack of diversity in the field, the financial burden of the application process, and microaggressions from peers, program leadership, and clinical …
Species Abundance, Spatial And Vertical Distributionsof Large Heteropods (Pterotracheidae And Carinariidae)In The Northern Gulf Of Mexico, Kristine A. Clark
Species Abundance, Spatial And Vertical Distributionsof Large Heteropods (Pterotracheidae And Carinariidae)In The Northern Gulf Of Mexico, Kristine A. Clark
USF Tampa Graduate Theses and Dissertations
A description of species abundance, richness and distribution, and eye size of heteropod molluscs from the families Pterotracheidae and Carinariidae in the oligotrophic ecosystem of the northern Gulf of Mexico (GOM) is described based on discrete-depth sampling protocols. The collections were comprised from two midwater sampling programs conducted sequentially after the 2010 Deepwater Horizon oil spill (DWHOS): the Offshore Nekton Sampling and Analysis Program (ONSAP, 2011) and the Deep Pelagic Nekton Dynamics of the Gulf of Mexico (DEEPEND, 2015-2018). Study materials from DEEPEND were collected during the initial five cruises of 2015-2017. These programs collected over 3,495 heteropods in two …
Diversity Of Cultured Bacteria From The Perennial Ice Block Of Scarisoara Ice Cave, Romania, Corina Iţcuş, Mădălina-Denisa Pascu, Traian Brad, Aurel Perşoiu, Cristina Purcarea
Diversity Of Cultured Bacteria From The Perennial Ice Block Of Scarisoara Ice Cave, Romania, Corina Iţcuş, Mădălina-Denisa Pascu, Traian Brad, Aurel Perşoiu, Cristina Purcarea
International Journal of Speleology
Cave ice ecosystems represent a poorly investigated glacial environment. Diversity of cave ice bacteria and their distribution in perennial ice deposits of this underground glacial habitat could constitute a proxy for microbial response to climatic and environmental changes. Scarisoara Ice Cave (Romania) hosts one of the oldest and largest cave ice blocks worldwide. Here we report on cultured microbial diversity of recent, 400, and 900 years-old perennial ice from this cave, representing the first characterization of a chronological distribution of cave-ice bacteria. Total cell density measured by SYBR Green I epifluorescence microscopy varied in the 2.4 x 104 – …
Water Column Stratification Structures Viral Community Composition In The Sargasso Sea, Dawn Goldsmith, Jennifer Brum, Max Hopkins, Craig Carlson, Mya Breitbart
Water Column Stratification Structures Viral Community Composition In The Sargasso Sea, Dawn Goldsmith, Jennifer Brum, Max Hopkins, Craig Carlson, Mya Breitbart
Marine Science Faculty Publications
A decade-long study of viral abundance at the Bermuda Atlantic Time-series Study (BATS) site recently revealed an annually recurring pattern where viral abundance was fairly uniform in the well-mixed upper water column each winter, yet a subsurface peak in viral abundance between 60 and 100 m depth developed each summer during water column stratification (Parsons et al. 2012; ISME J 6:273–284). Building upon these findings, this study tests the hypothesis that in the well-mixed period (March), the viral communities at the surface and at 100 m depth are similar in composition, while during water column stratification (September), differences in the …
Ecology Of The Late Neogene Extinctions: Perspectives From The Plio-Pleistocene Of Florida, Shubhabrata Paul
Ecology Of The Late Neogene Extinctions: Perspectives From The Plio-Pleistocene Of Florida, Shubhabrata Paul
USF Tampa Graduate Theses and Dissertations
The ecological impact of past extinction events is one of the central issues in paleobiology. In face of present environmental changes, a better understanding of past extinctions will enable us to identify the magnitude of biodiversity crises and their underlying processes. The Late Neogene was a time of extraordinary climatic reorganization, including Northern Hemisphere glaciation, the rise of the Central American Isthmus, and associated changes in environmental conditions. Therefore, the Late Neogene extinctions of marine molluscs of South Florida present an ideal platform to examine the interaction between environmental changes and biotic response. In the present study, three different aspects …
Physical Factors Of Differentiation In Macrobenthic Communities Between Atoll Lagoons In The Central Tuamotu Archipelago (French Polynesia), Mehdi Adjeroud, Serge Andrefouet, Claude Payri, Joel Orempuller
Physical Factors Of Differentiation In Macrobenthic Communities Between Atoll Lagoons In The Central Tuamotu Archipelago (French Polynesia), Mehdi Adjeroud, Serge Andrefouet, Claude Payri, Joel Orempuller
Marine Science Faculty Publications
Nine atolls were characterized in order to understand how physical factors control the species composition, diversity, and abundance of macrobenthic (coral, mollusc, echinoderm, and algal) communities inside the lagoons. Only one region, the central part of Tuamotu Archipelago, French Polynesia, was considered, in order to minimise the variation due to regional factors between regions. The lagoons investigated showed a gradient of physical factors, providing various landscape configurations. The physical factors were surface area, abundance of pinnacles, degree of hydrodynamic aperture, and relative importance of passes in this degree of aperture. Macrobenthic communities were characterized by low diversity and strong dominance …
Genetic Diversity Of Related Vibriophages Isolated From Marine Environments Around Florida And Hawaii, Usa, C. A. Kellogg, J. B. Rose, S. C. Jaing, J. M. Thurmond, John H Paul
Genetic Diversity Of Related Vibriophages Isolated From Marine Environments Around Florida And Hawaii, Usa, C. A. Kellogg, J. B. Rose, S. C. Jaing, J. M. Thurmond, John H Paul
Marine Science Faculty Publications
Although viruses from the marine environment have been enumerated, isolated, and characterized, there is little information on the abundance or global distribution of specific phage types. To this end, we studied the abundance and distribution of phages which infect a marine bacterium isolated from Tampa Bay (Florida, USA), tentatively identified (Microbial ID, Inc., Newark, Delaware, USA) as Vibrio parahaemolyticus. Using this host, we have isolated over 60 phages from the Gulf of Mexico, Tampa Bay, Florida Keys, and Oahu, Hawaii (USA). These isolates are all Myoviridae, with head sizes ranging from 50 +/- 0.0 to 65 +/- 4.2 nm …