View All Items

Title: WINTER FRESH VEGETABLE FARMING IN FLORIDA: ITS ACREAGE PATTERNS AND MARKETING FLOWS.
Creator: MCJUNKIN, JOYCE P., Florida Atlantic University, Schultz, Ronald R., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Florida is the major supplier of winter vegetables in the United States. This dominance is examined historically and geographically during the time span 1937-1974 to determine the reasons, causes, and extent of this dominance. The gravity model is used to analyze the significance of the major markets to the Florida supply and the significance of the Florida supply to the markets. Distance and size of the market were found to be strongly related to flows from Florida. The greater stability of...
Show moreFlorida is the major supplier of winter vegetables in the United States. This dominance is examined historically and geographically during the time span 1937-1974 to determine the reasons, causes, and extent of this dominance. The gravity model is used to analyze the significance of the major markets to the Florida supply and the significance of the Florida supply to the markets. Distance and size of the market were found to be strongly related to flows from Florida. The greater stability of the larger northeastern markets was considered in relation to several socioeconomic characteristics. Intra-state measures of market and physical losses, production totals, county acreages, and regional shifts of crop emphasis are examined geographically. It was found that Florida acreage totals increased over time as did relative production and that there was a southern production shift. Beans showed the greatest county stability and cucumbers the least.
Show less
Date Issued: 1978
PURL: http://purl.flvc.org/fcla/dt/13955
Subject Headings: Vegetables--Florida--Marketing
Format: Document (PDF)

Title: VISUAL RESOURCE ASSESSMENT: A COMPARISON OF TWO APPROACHES.
Creator: BERNSTEIN, ARLA GAIL., Florida Atlantic University, Schultz, Ronald R., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: This thesis investigates and applies methods for evaluating the visual landscape for scenic and recreational purposes. Two specific approaches--the METLAND (quantitative) approach and the McHarg (qualitative) approach--are applied to a case study of two sites in Broward County, Florida. Data sources for the study include Florida Land Use and Cover Classification maps, the Vegetation Inventory for Broward County, and a survey of professional evaluators. Visual resource assessment of these...
Show moreThis thesis investigates and applies methods for evaluating the visual landscape for scenic and recreational purposes. Two specific approaches--the METLAND (quantitative) approach and the McHarg (qualitative) approach--are applied to a case study of two sites in Broward County, Florida. Data sources for the study include Florida Land Use and Cover Classification maps, the Vegetation Inventory for Broward County, and a survey of professional evaluators. Visual resource assessment of these sites is illustrated through a step by step process and should provide a basis for future assessment of additional sites. The McHarg approach is found to be more expeditious for small scale studies, while the METLAND approach is more efficient for multi-objective or regional analysis. Also, the METLAND quantitative approach increases the objectivity of assessment. The final chapter evaluates the two approaches used and provides recommendations for future research in the area of visual resource assessment.
Show less
Date Issued: 1982
PURL: http://purl.flvc.org/fcla/dt/14104
Subject Headings: Landscape assessment
Format: Document (PDF)

Title: Vegetation time series analysis of the Loxahatchee Slough, Palm Beach County, Florida: A GIS incorporating satellite imagery with black and white aerial photography.
Creator: Hohner, Susan Marie., Florida Atlantic University, Roberts, Charles, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: The Loxahatchee Slough is the largest wilderness island refuge existing in Palm Beach County, Florida. Cultural impacts have altered the hydrology of the area. This study provides a database of historical and geographical information regarding the Slough. Aerial photography and satellite imagery from pre- and post-channelization dates are classified according to vegetation ecosystems. GIS analysis is used to compare these diverse data sets. Changes in hydroperiod are examined, using...
Show moreThe Loxahatchee Slough is the largest wilderness island refuge existing in Palm Beach County, Florida. Cultural impacts have altered the hydrology of the area. This study provides a database of historical and geographical information regarding the Slough. Aerial photography and satellite imagery from pre- and post-channelization dates are classified according to vegetation ecosystems. GIS analysis is used to compare these diverse data sets. Changes in hydroperiod are examined, using vegetation as an indicator. Results show a general trend toward dryer hydroperiod vegetation land cover. Since 1979, the Army Corps of Engineers has raised water levels back toward pre-channelization levels, in a portion of the study area known as the Historic Region. Results indicate a positive response, with a net increase of longer hydroperiod vegetation in this region since 1979.
Show less
Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/15079
Subject Headings: Vegetation mapping--Florida--Palm Beach County, Plant communities--Remote sensing, Geographic information systems--Remote sensing, Aerial photography in geography--Florida--Palm Beach County, Swamp ecology--Florida--Palm Beach County
Format: Document (PDF)

Title: Valuing the Invaluable: Piquant Georgia Low-Country Marsh Ecosystem Services.
Creator: Wood, Alyssa A., Polsky, Colin, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Coastal ecosystems, such as the salt marsh of the Georgia coast, have long been valued for decision-making purposes based on market-values of goods and services including: fishery landings, hedonic pricing of waterfront homes, and tourism dollars. These values do not show the full picture of services provided by these ecosystems. Using focus group discussions and key informant interviews I investigate socio-cultural values and benefits provided by salt marsh ecosystems in central coastal...
Show moreCoastal ecosystems, such as the salt marsh of the Georgia coast, have long been valued for decision-making purposes based on market-values of goods and services including: fishery landings, hedonic pricing of waterfront homes, and tourism dollars. These values do not show the full picture of services provided by these ecosystems. Using focus group discussions and key informant interviews I investigate socio-cultural values and benefits provided by salt marsh ecosystems in central coastal Georgia. Participants noted that through their experiences in marshes they developed a desire to be stewards. This desire, coupled with the industrial pollution, residential development, and sea-level rise threats in the area result in a need for cooperative conservation and thus better enforcement of existing regulations. This relational value persisted across geographic locations and sample populations. My results show the importance of utilizing diverse members of community to elicit qualitative value statements.
Show less
Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00004993
Subject Headings: Dissertations, Academic -- Florida Atlantic University, Salt marshes., Ecosystem services., Ecosystem services--Valuation.
Format: Document (PDF)

Title: UTILITY-SCALE SOLAR ENERGY FACILITIES, FLORIDA PANTHER HABITAT CONNECTIVITY, AND DISPERSAL CORRIDORS.
Creator: Leskova, Olena V., Markwith, Scott, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
Abstract/Description: The objective of this research was to study the impacts of large USSE facilities on wildlife movement corridors and habitat connectivity in Florida to identify important habitat patches and movement corridors significant for potential Florida panther (Puma concolor coryi) dispersal, conservation, and recovery. Large carnivores (such as Florida panther) have often been examined as conservation umbrellas for large-scale connectivity planning due to their extensive spatial requirements (Beier et...
Show moreThe objective of this research was to study the impacts of large USSE facilities on wildlife movement corridors and habitat connectivity in Florida to identify important habitat patches and movement corridors significant for potential Florida panther (Puma concolor coryi) dispersal, conservation, and recovery. Large carnivores (such as Florida panther) have often been examined as conservation umbrellas for large-scale connectivity planning due to their extensive spatial requirements (Beier et al., 2006, Thorne et al., 2006). In addition, Florida panther is relatively well-studied species that have been listed as endangered under the US Endangered Species Act for over 40 years, due to habitat fragmentation and reduction. Habitat suitability was compared before and after the installation of the USSE facilities using RandomForest model developed by Frakes and Knight (in prep). The connectivity study focused on comparing current density and effective resistance (resistance distance) before and after the installations of USSE facilities and was conducted using Circuitscape 4.0. The impacts on habitat connectivity were the most substantial in the areas where the USSE facilities were installed on or around wildlife corridors, near focal areas, and in large clusters. The study has identified important linkages and new pathways that animals may try to take in order to bypass the facilities. The study has also shown that installation of USSE facilities in areas not suitable as habitat for Florida panthers, but still permeable or semi-permeable (e.g., agricultural lands), can substantially impact connectivity between focal areas.
Show less
Date Issued: 2020
PURL: http://purl.flvc.org/fau/fd/FA00013500
Subject Headings: Florida panther, Puma concolor coryi, Habitat conservation, Solar energy--Environmental aspects, Solar energy--Florida
Format: Document (PDF)

Title: Using Low-Cost Multi-Depth Samplers to Characterize the Variability of Specific Conductance in Coastal South Florida Beaches.
Creator: Shaver, Kyle David, Root, Tara, Briggs, Tiffany Roberts, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
Abstract/Description: A small body of saline rich water rests in the saturated zone between the foredune and the shoreline at certain beaches. This region is beneath the water table and the top of the fresher groundwater, known as the Upper Saline Plume (USP). The USP is significant because density driven flow and chemical fluxes between freshwater, rainwater, and seawater contribute to biogeochemical processes in the subterranean estuary (Duque et al. 2020). The occurrence of the USP has been observed along...
Show moreA small body of saline rich water rests in the saturated zone between the foredune and the shoreline at certain beaches. This region is beneath the water table and the top of the fresher groundwater, known as the Upper Saline Plume (USP). The USP is significant because density driven flow and chemical fluxes between freshwater, rainwater, and seawater contribute to biogeochemical processes in the subterranean estuary (Duque et al. 2020). The occurrence of the USP has been observed along beaches that have a moderate to gentle slope, fine to medium grain size, and higher wave energy. The goal of this study was to determine if conditions for the presence of USP are consistent throughout different coastal beaches in southeast Florida while mapping the groundwater salinity across the beach. To identify the existence and delimit the boundary interface of the USP in the southeastern coast of Florida, multi–depth samplers were designed, built, and deployed along cross-shore transects at Jupiter and Gulfstream Beaches in Palm Beach County, FL. Groundwater samples were extracted along the transects to measure specific conductance. Although this study did not confirm the existence of the USP in South Florida beaches, an intermediate zone of water that is in-between the specific conductance ranges of relatively freshwater and relatively salty water was identified. Furthermore, the size of this intermediate zone was corresponded with beach slope, showing larger intermediate zones for steeper slopes and vice versa. Finally, temporal changes in the location and morphology of this intermediate zone were also identified in relation to a distinct disturbance event (Hurricane Isaias) which resulted in elevated ocean water levels.
Show less
Date Issued: 2020
PURL: http://purl.flvc.org/fau/fd/FA00013625
Subject Headings: Beaches--Florida, Freshwater, Seawater, Water resources--Management
Format: Document (PDF)

Title: Using Hydrogeophysical Methods for Investigating Carbon Dynamics in the Greater Everglades Watershed: Implications for the Spatial and Temporal Variability in Carbon Stocks and Biogenic Gas Fluxes.
Creator: McClellan, Matthew D., Comas, Xavier, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Peat soils store a large fraction of the global soil carbon (C) pool and comprise 95% of wetland C stocks. They also have the capability to produce and release significant amounts of greenhouse gasses (CO2, CH4) into the atmosphere. Most studies of wetland soil C and gas flux dynamics have been done in expansive peatlands in northern boreal and subarctic biomes. However, wetlands in temperate and tropical climates are vastly understudied despite accounting for more than 20% of the global...
Show morePeat soils store a large fraction of the global soil carbon (C) pool and comprise 95% of wetland C stocks. They also have the capability to produce and release significant amounts of greenhouse gasses (CO2, CH4) into the atmosphere. Most studies of wetland soil C and gas flux dynamics have been done in expansive peatlands in northern boreal and subarctic biomes. However, wetlands in temperate and tropical climates are vastly understudied despite accounting for more than 20% of the global peatland C stock and storing large amounts of biogenic gasses Although studies investigating greenhouse gas dynamics from peatlands have increased during the last decade, the spatial and temporal distribution of these gases still remains highly uncertain, mainly due to the limitations in terms of spatial and temporal resolution and invasive nature of most methods traditionally used. This thesis combines a series of field and laboratory studies at several sites in the Greater Everglades as examples to show the potential of hydrogeophysical methods to better understand: 1) the belowground C distribution and overall contribution to the global C stocks of certain wetlands (Chapter 2); and 2) the spatial and temporal variability in both C accumulation and releases from peat soil monoliths from several wetland sites in the Greater Everglades (Chapter 3 and 4). To estimate belowground C in the field, I used a combination of indirect non-invasive geophysical methods (GPR), aerial imagery, and direct measurements (coring) to estimate the contribution of subtropical depressional wetlands to the total C stock of pine flatwoods landscape at the Disney Wilderness Preserve (DWP, Orlando, FL). Three-dimensional (3D) GPR surveys were used to define the thickness of stratigraphic layers from the wetland surface to the mineral soil interface within depressional wetlands. Depth-profile cores in conjunction with C core analysis were utilized to visually confirm depths of each interface and estimate changes in soil C content with depth and were ultimately used to estimate total peat volume and C stock for each depressional wetland. Aerial photographs were used to develop a relationship between surface area and total wetland C stock, that were applied to estimate total landscape C stock of all depressional wetlands throughout the entire preserve. Additionally, low-frequency GPR surveys were conducted to image the stratigraphy underneath the peat basin of depressional wetlands to depict lithological controls on the formational processes of depressional wetlands at the DWP. Spatial and temporal variability in biogenic greenhouse gas (i.e. methane and carbon dioxide) production and release were investigated at the laboratory scale. Two 38 liter (0.5 m x 0.23 m x 0.3 m) peat monoliths from two different wetland ecosystems in central Florida (sawgrass peatland and a wet prairie) were compared in order to understand whether changes in matrix properties influence gas dynamics in a controlled environment (i.e. constant temperature). Gas content variability (i.e. build-up and release) within the peat matrix was estimated using a series of high frequency (1.2 GHz) GPR transects along each sample about three times a week. An array of gas traps (eight per sample) fitted with time-lapse cameras were also used in order to constrain GPR measurements and capture gas releases at 15-minute intervals. Gas chromatography was performed on gas samples extracted from the traps to determine CH4 and CO2 content. Also, at the lab scale, temporal variability in biogenic gas accumulation and release was investigated in a large 0.073 m3 peat monolith from the Blue Cypress Preserve in central Florida. An autonomous rail system was constructed in order to estimate gas content variability (i.e. build-up and release) within the peat matrix using a series of continuous GPR transects along the sample. This system ran virtually nonstop using high frequency (1.2 GHz) antennas. GPR measurements were again constrained with an array of gas traps (6) fitted with time-lapse cameras and gas chromatography. The aim of this study is to better constrain temporal scale, and better understand the heterogeneous nature (both in time and space) of gas releases from peat soils.
Show less
Date Issued: 2019
PURL: http://purl.flvc.org/fau/fd/FA00013238
Subject Headings: Greenhouse gases, Everglades (Fla.), Peatlands, Carbon, Bogenic gas
Format: Document (PDF)

Title: Using geographic information systems to produce time area diagrams for the Clark Hydrograph Method.
Creator: Kohler, Michael Francis, Florida Atlantic University, Restrepo, Jorge I., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Methodologies in GIS are used to compute stream flows for a watershed in Northern California by implementing the Clark Hydrograph Method. GIS algorithms are used to produce time area diagrams with time of concentration formula. These methods are compared to a simulation in HEC-HMS with the dimensionless TAD equation and the ModClark Method. Each GIS method is used to estimate the hydrograph for a measured rainfall event. The accuracy of each of the methods is explored using the HEC objective...
Show moreMethodologies in GIS are used to compute stream flows for a watershed in Northern California by implementing the Clark Hydrograph Method. GIS algorithms are used to produce time area diagrams with time of concentration formula. These methods are compared to a simulation in HEC-HMS with the dimensionless TAD equation and the ModClark Method. Each GIS method is used to estimate the hydrograph for a measured rainfall event. The accuracy of each of the methods is explored using the HEC objective function, mean squared error, and other statistical measures of correlation. Advantages and limitations of the GIS methodologies are examined and topics of further study are suggested.
Show less
Date Issued: 2001
PURL: http://purl.flvc.org/fcla/dt/12769
Subject Headings: Geographic information systems, Hydrology
Format: Document (PDF)

Title: Use of Ground Penetrating Radar (GPR) in a Study on Beach Morphodynamics at Red Reef Beach, Boca Raton, Florida.
Creator: Camara dos Santos Porto, Sabrina, Briggs, Tiffany Roberts, Comas, Xavier, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: The internal architecture of a beach system can provide clues into the processes involved in its formation, including depositional processes, and/or driving mechanisms (Billy et al., 2014). Several unique events such as cold fronts or Hurricane Irma caused conditions that resulted in erosion and accretion changes in Red Reef Beach - Boca Raton, throughout the year of 2017. Since the lateral extent of these changes is difficult to evaluate using traditional methods such as coring, a Ground...
Show moreThe internal architecture of a beach system can provide clues into the processes involved in its formation, including depositional processes, and/or driving mechanisms (Billy et al., 2014). Several unique events such as cold fronts or Hurricane Irma caused conditions that resulted in erosion and accretion changes in Red Reef Beach - Boca Raton, throughout the year of 2017. Since the lateral extent of these changes is difficult to evaluate using traditional methods such as coring, a Ground Penetrating Radar (GPR) was tested, which allows for a good lateral resolution (cm scale), to image the distribution and evolution of these sediments. The objectives of this study were to 1) explore the lateral variability in the internal architecture of sediments in Red Reef beach in Boca Raton (FL) using an array of ground penetrating radar (GPR) measurements constrained with coring and sediment analysis; 2) explore how dynamics of erosion and accretion induced by changes in wave activity and related to tide variation and storm events, may affect surface topography and the sedimentary internal architecture of beach deposits, using RTK GPS and GPR time-lapse measurements; 3) to explore changes in the lateral extent of the freshsaltwater interface along the beach profile in relation to tide variation and storm events. Reflectors identified in the GPR images showed some evidence of erosional and accretionary surfaces preserved in Red Reef beach. These measurements were repeated over time coinciding with certain events (such as Hurricane Irma) to explore their effects in terms of sediment erosion and accretion as reflected in changes in topography (using time-lapse GPS-RTK measurements), and changes in the internal sedimentary architecture (using time-lapse GPR measurements). The datasets collected also revealed the temporal evolution of the salt-freshwater interface, showing how the lateral extent of saltwater saturated sediment (inferred from areas of GPR signal attenuation along the profiles) evolved over time. This study shows the potential of GPR to provide information about beach sediment processes and dynamics at resolutions beyond traditional measurements (such as coring). It also shows the importance of combining methods that are complementary, such as the use of RTK GPS to explore changes in topography, and GPR that provides information on subsurface sedimentary architecture and the mechanism of change such as post-storm recovery. This study has implications for better understanding changes in coastal sedimentary deposits and processes, both at the subsurface, particularly after high-energy events, such as hurricanes, that result in rapid changes in erosion and/or accretion of sediments.
Show less
Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00005947
Subject Headings: Dissertations, Academic -- Florida Atlantic University, Beaches--Florida, Ground penetrating radar., Sediments (Geology)--Analysis.
Format: Document (PDF)

Title: Understanding Variability of Biogenic Gas Fluxes from Peat Soils at High Temporal Resolution Using Capacitance Moisture Probes.
Creator: Munzenrieder, Cali, Comas, Xavier, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Peatlands act as carbon sinks while representing major sources of biogenic gases such as methane (CH4) and carbon dioxide (CO2), two potent greenhouse gases. Gas production and release in these peats soils are also influenced by overall warm temperatures and water table fluctuations due to the naturally shallow water table in the Florida Everglades. Releases of biogenic gases from Florida Everglades peat soils are not well understood and the temporal distribution and dynamics are uncertain....
Show morePeatlands act as carbon sinks while representing major sources of biogenic gases such as methane (CH4) and carbon dioxide (CO2), two potent greenhouse gases. Gas production and release in these peats soils are also influenced by overall warm temperatures and water table fluctuations due to the naturally shallow water table in the Florida Everglades. Releases of biogenic gases from Florida Everglades peat soils are not well understood and the temporal distribution and dynamics are uncertain. The general objective of this work was geared towards a methodological approach which aimed to examine the feasibility of capacitance moisture probes to investigate biogenic gas dynamics in various Florida Everglades peat soils at high temporal resolution. This work has implications for establishing capacitance moisture probes as a method to monitor gas dynamics in peat soils at high temporal resolution and better understanding patterns of gas build-up and release from peat soils in the Everglades.
Show less
Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00004700
Subject Headings: Everglades National Park (Fla.) -- Environmental conditions, Gas dynamics, Geographic information systems, Grassland ecology, Greenhouse gases, Wetland ecology
Format: Document (PDF)

Title: Three-dimensional geomodeling to identify spatial relations between lithostratigraphy and porosity in the karst carbonate biscayne aquifer, southeastern Florida.
Creator: Westcott, Richard, Root, Tara L., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: In southeastern Florida, the majority of drinking water comes from the Biscayne aquifer. This aquifer is comprised of heterogeneous limestones, sandstones, sand, shell and clayey sand with zones of very high permeability. Visualizing the spatial variations in lithology, porosity and permeability of heterogeneous aquifers, like the Biscayne, can be difficult using traditional methods of investigation. Using the Roxar IRAP RMS software multi-layered 3D conceptual geomodels of the lithology,...
Show moreIn southeastern Florida, the majority of drinking water comes from the Biscayne aquifer. This aquifer is comprised of heterogeneous limestones, sandstones, sand, shell and clayey sand with zones of very high permeability. Visualizing the spatial variations in lithology, porosity and permeability of heterogeneous aquifers, like the Biscayne, can be difficult using traditional methods of investigation. Using the Roxar IRAP RMS software multi-layered 3D conceptual geomodels of the lithology, cyclostratigraphy and porosity were created in a portion of the Biscayne aquifer. The models were built using published data from borehole geophysical measurements, core samples, and thin sections. Spatial relations between lithology, cyclostratigraphy, porosity, and preferential flow zones were compared and contrasted to better understand how these geologic features were inter-related. The models show local areas of differing porosity within and cross-cutting different cycles and lithologies. Porosity in the Biscayne aquifer study area follows a hierarchy attributed to lithofacies with a pattern of increasing porosity for the high frequency cycles. This modeling improves understanding of the distribution and interconnectedness of preferential flow zones, and is thus an invaluable tool for future studies of groundwater flow and groundwater contamination in the Biscayne aquifer.
Show less
Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004337, http://purl.flvc.org/fau/fd/FA00004337
Subject Headings: Biscayne Aquifer (Fla.), Geophysics -- Florida -- Miami Dade County, Groundwater flow -- Florida -- Miami Dade County -- Mathematical models, Hydrology, Karst -- Florida -- Miami Dade County, Porosity, Sedimentary basins -- Florida -- Biscayne Aquifer, Sedimentology -- Statistical methods, Soil permeability
Format: Document (PDF)

Title: The Non-Random Selection of Medicinal Plants Theory: a Case Study of a Kichwa Community in the Ecuadorian Amazon.
Creator: Robles Arias, Daniela M., Fadiman, Maria, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: The non-random selection of medicinal plants theory, which states that phylogeny affects the selection of medicinal plants, was proposed by Daniel Moerman to indirectly prove that traditional medicinal systems are rational and based in part by the therapeutic efficacy of plants. The logic of this theory is that because members of a taxonomical group share similar characteristics, some groups will be more medicinal and will be over-used in pharmacopoeias, while other groups bereft of secondary...
Show moreThe non-random selection of medicinal plants theory, which states that phylogeny affects the selection of medicinal plants, was proposed by Daniel Moerman to indirectly prove that traditional medicinal systems are rational and based in part by the therapeutic efficacy of plants. The logic of this theory is that because members of a taxonomical group share similar characteristics, some groups will be more medicinal and will be over-used in pharmacopoeias, while other groups bereft of secondary metabolites and therapeutic potential will be under-used medicinally. To test this theory, Moerman linearly regressed the total number of medicinal plants per family against the total number of plants per family present in an area and examined residual values to find over-used and under-used medicinal plant families. The method has been praised for its simplicity. Nonetheless, shortcomings have been noted and criticized, inspiring researchers to propose new procedures to test for phylogenetic biases in pharmacopoeias. Negative Binomial regression and examination of studentized residuals, the method used in this investigation, ameliorates the original one with a few corrections, conserving the simplicity and solving for all the criticized flaws. Also, this study incorporated different sociodemographic factors to determine if the intracultural homogeneity of traditional knowledge affects the results of the non-random selection of medicinal plants theory analysis. By testing Moerman’s theory, which is one of Ethnobotany’s major theories, this investigation is in agreement with the call to have more hypothesis-driven research within a theoretical framework to continue to advance the Ethnobotany field.
Show less
Date Issued: 2018
PURL: http://purl.flvc.org/fau/fd/FA00013000
Subject Headings: Medicinal plants, Ethnobotany, Ecuador, Amazon River Region
Format: Document (PDF)

Title: The geography of airfares: modeling market and spatial forces in the U.S. Airline Industry.
Creator: Cordoba, Hilton A., Ivy, Russell L., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: The deregulation of the airline industry created a myriad of changes in the U.S. air transport system that has both defended and sparked debate on the wisdom of such policy change for over three decades. One of the promises of deregulation from its proponents in the 1970s was increased competition that would lead to a reduction in fares for consumers. Historic data and literature has indeed shown this to be to the case as average airfares have trended downward especially over the last twenty...
Show moreThe deregulation of the airline industry created a myriad of changes in the U.S. air transport system that has both defended and sparked debate on the wisdom of such policy change for over three decades. One of the promises of deregulation from its proponents in the 1970s was increased competition that would lead to a reduction in fares for consumers. Historic data and literature has indeed shown this to be to the case as average airfares have trended downward especially over the last twenty years. Nonetheless, the industry has become much more complex since deregulation in terms of pricing to the point that very sophisticated yield management computer models are used to achieve an optimum balance between load factors and price. Consequently, this has in turn translated into a haphazard experience for most air travelers in the United States; for instance, the cost of a ticket is sometimes lower traveling from coast to coast than within a particular region of the U.S. and paid fares for the exact same trip can deviate dramatically, often based on variation in the date of purchase. Additionally, this has also resulted in a spatial pattern where certain regions throughout the country have enjoyed lower airfares more so than others. This research seeks to identify this regional disparity using a geographically weighted regression and spatial autoregressive models in a sample of 6,200 routes between 80 primary U.S. airports. The results from the global model showed that variables which measure competition (airlines), operating cost (flights, distance) and elasticity (layover time) proved to be statistically significant and had a positive relationship with airfare The GWR results indicated that while some factors like distance, and hub size, were statistically significant almost nationwide, other factors such as frequency, presence of low cost carriers, and numbers of airlines were only statistically significant at certain airports. Finally, the spatial regressions models indicate that the spatial autocorrelation found in U.S. airfares resemble the first order properties of spatial autocorrelation (i.e. spatial heterogeneity) and not the second order properties (i.e. spatial dependence).
Show less
Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004188, http://purl.flvc.org/fau/fd/FA00004188
Subject Headings: Aeronautics, Commercial -- Deregulation, Airlines -- Deregulation -- United States, Airlines -- Management, Airlines -- Rates, Airlines -- United States -- Cost of operation, Economic geography
Format: Document (PDF)

Title: A survey, analysis, and evaluation of the nearshore reefs situated off Palm Beach County, Florida.
Creator: Vare, Carman Nicholas., Florida Atlantic University, Schultz, Ronald R., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: An underwater survey was performed between July 1987 and August 1990 focusing on the entire nearshore reef tract situated along the shoreline of Palm Beach County, Florida. Transects, aligned on Florida Department of Natural Resources survey monuments, commenced from the high water mark waterward to the 4 meter isobath. A total of 125 of the 228 transects were found to contain nearshore reefs. A matrix of reef characteristics was created based upon the value of six indices including reef...
Show moreAn underwater survey was performed between July 1987 and August 1990 focusing on the entire nearshore reef tract situated along the shoreline of Palm Beach County, Florida. Transects, aligned on Florida Department of Natural Resources survey monuments, commenced from the high water mark waterward to the 4 meter isobath. A total of 125 of the 228 transects were found to contain nearshore reefs. A matrix of reef characteristics was created based upon the value of six indices including reef width and profile, biodiversity, beach width, public access and an assessment of the historical permanence of the reef. This matrix, based on "z" scores, provided a means of comparing each nearshore reef transect station within the County. This evaluative scheme was used to develop recommendations for the protection and management of the nearshore reefs.
Show less
Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14717
Subject Headings: Reefs--Florida, Bioherms--Florida
Format: Document (PDF)

Title: A survey of the cruise ship industry, 1960-1990.
Creator: Wynen, Nancy H., Florida Atlantic University, Lee, David R., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Cruises have existed as a unique travel experience since 1960, when air transportation overtook ships as the main mode of travel for tourists. In order to survive, shipping companies devoted their resources to the recreational market. This thesis studies that development and the relationship of cruise travel to traditional travel theory. The second part of the thesis is an analysis of the ports by world region visited by cruise ships. Changes in port popularity from 1960 to 1990 and the...
Show moreCruises have existed as a unique travel experience since 1960, when air transportation overtook ships as the main mode of travel for tourists. In order to survive, shipping companies devoted their resources to the recreational market. This thesis studies that development and the relationship of cruise travel to traditional travel theory. The second part of the thesis is an analysis of the ports by world region visited by cruise ships. Changes in port popularity from 1960 to 1990 and the attraction to the ship companies and travellers is studied.
Show less
Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14710
Subject Headings: Cruise ships, Tourist trade
Format: Document (PDF)

Title: A study of the instruction of Latin American geography in secondary schools in southeast Florida.
Creator: Peterson, Andrew Brian., Florida Atlantic University, Kenzer, Martin S., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: The instruction of Latin American topics in southeast Florida is crucial to the future of the region. Geographic education has traditionally suffered in the United States, and Florida is no exception. The demographics of southeast Florida are changing to reflect a greater proportion of Latin Americans. Social studies programs at the secondary level should reflect this change and treat Latin American groups fairly. Textbooks in use in the region are second best choices for Latin American...
Show moreThe instruction of Latin American topics in southeast Florida is crucial to the future of the region. Geographic education has traditionally suffered in the United States, and Florida is no exception. The demographics of southeast Florida are changing to reflect a greater proportion of Latin Americans. Social studies programs at the secondary level should reflect this change and treat Latin American groups fairly. Textbooks in use in the region are second best choices for Latin American topical coverage. Social studies educators in southeast Florida are aware of the growing importance of Latin America to the region, but in many cases are unable to enhance activities at their school. The coverage of Latin American instruction in southeast Florida is adequate for the moment, but must be enriched in the near future to augment cultural understanding between groups so that they may live agreeably together in an ethnically diverse environment.
Show less
Date Issued: 1992
PURL: http://purl.flvc.org/fcla/dt/14813
Subject Headings: Latin America--Geography--Study and teaching--Florida, Geography--Study and teaching
Format: Document (PDF)

Title: Storm-Induced Neashore Sediment Transport.
Creator: Warren, William F., Briggs, Tiffany Roberts, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Each year storms impact coastal areas, sometimes causing significant morphologic change. Cold fronts are associated with increased wave energy and frequently occur during the winter months along many coasts, such as the Atlantic and Gulf of Mexico. The higher wave energy can be responsible for a large quantity of the sediment transport resulting in rapid morphologic change. Using streamer traps, the vertical distribution of onshore-directed sediment transport during two different cold fronts...
Show moreEach year storms impact coastal areas, sometimes causing significant morphologic change. Cold fronts are associated with increased wave energy and frequently occur during the winter months along many coasts, such as the Atlantic and Gulf of Mexico. The higher wave energy can be responsible for a large quantity of the sediment transport resulting in rapid morphologic change. Using streamer traps, the vertical distribution of onshore-directed sediment transport during two different cold fronts on two low-wave energy beaches (i.e., along the northern Yucatan and southeast Florida) were compared with the resulting morphologic change. The objectives of this study are to: 1) analyze the grain size distribution (statistics) of sediment transported during a cold front, 2) compare the vertical sediment distribution throughout the water column, and 3) compare characteristics of bed sediment to the sediment within the water column. Understanding the changing grain size distribution of bottom sediments in comparison to directional transport (throughout the water column) should help determine the sediment fraction(s) being eroded or deposited, which could greatly improve predictions of storm-induced morphology change.
Show less
Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00004830, http://purl.flvc.org/fau/fd/FA00004830
Subject Headings: Coast changes--Mathematical models., Coastal zone management., Geomorphology., Sediment transport--Analysis., Coastal engineering--Mathematical models.
Format: Document (PDF)

Title: Statistical correlation between economic activity and DMSP-OLS night light images in Florida.
Creator: Forbes, Dolores J., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: The Defense Meteorological Satellite Program (DMSP) Optical Line Scan (OLS) instruments collect data from an altitude of approximately 830km above the surface of the Earth. The night light data from these instruments has been shown to correlate by lit area with national level Gross Domestic Product (GDP) and to correlate with GDP at the State level by total radiance value. Very strong correlation is found between the night light data at a new, larger scale, the Metropolitan Statistical Area ...
Show moreThe Defense Meteorological Satellite Program (DMSP) Optical Line Scan (OLS) instruments collect data from an altitude of approximately 830km above the surface of the Earth. The night light data from these instruments has been shown to correlate by lit area with national level Gross Domestic Product (GDP) and to correlate with GDP at the State level by total radiance value. Very strong correlation is found between the night light data at a new, larger scale, the Metropolitan Statistical Area (MSA) within the state of Florida. Additional statistical analysis was performed to determine which industries within each MSA explain the greatest amount of variance in the night light data. Industrial variables exhibited strong multi-collinearity. It is therefore impossible to determine which industries explain the greatest variance in the night light image data.
Show less
Date Issued: 2011
PURL: http://purl.flvc.org/FAU/3175019
Subject Headings: Earth, Rendering (Computer graphics), Urban ecology (Sociology), Sustainable development
Format: Document (PDF)

Title: Spatio-temporal modeling of seed dispersal and aquatic plant community restoration in the Kissimmee River floodplain.
Creator: Kennard, Stevee., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: This study created an ecological spatial model, using a geographic information system, to visualize the influence of hydrochory on restoration of the three dominant wetland communities of broadleaf marsh, wetland shrub, and wet prairie across the floodplain of the Kissimmee River. Primary parameters incorporated into the model included floodplain hydrology, seed characteristics of buoyancy and dispersal rates, and species flood tolerance. S²rensen's similarity index, comparing spatial...
Show moreThis study created an ecological spatial model, using a geographic information system, to visualize the influence of hydrochory on restoration of the three dominant wetland communities of broadleaf marsh, wetland shrub, and wet prairie across the floodplain of the Kissimmee River. Primary parameters incorporated into the model included floodplain hydrology, seed characteristics of buoyancy and dispersal rates, and species flood tolerance. S²rensen's similarity index, comparing spatial agreement among model output and observed community data, resulted in values of BLM-BB = 0.10, BLM = 0.07, WS = 0.21, and WP = 0.36. The significant discrepancies between modeled and observed community spatial coverage indicated a need for incorporation of more stochastic variables of climatic disturbances, nutrient availability, and soil characteristics. More research on species flood tolerance across smaller spatial scales is also needed, and base data incorporated into the model should also be reliable and consistent if accuracy is to be achieved.
Show less
Date Issued: 2013
PURL: http://purl.flvc.org/fcla/dt/3360797
Subject Headings: Seeds, Dispersal, Floodplain ecology, Wetland restoration, Restoration ecology
Format: Document (PDF)

Title: SPATIAL VARIATIONS IN MORTGAGE LENDING IN BROWARD COUNTY, FLORIDA.
Creator: PHILLIPS, JULIE A., Florida Atlantic University, Schultz, Ronald R., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: An analysis of five loan types from twenty-six lending institutions in 125 census tracts of Broward County revealed that lending was concentrated in coastal and western tracts, less in central tracts. Western tract loan activity was greater than average because this area is undergoing conversion from agricultural to urban land uses. Coastal tracts had greater than average rates because of continued expansion of condominium development. Central tracts are mainly commercial, industrial or lower...
Show moreAn analysis of five loan types from twenty-six lending institutions in 125 census tracts of Broward County revealed that lending was concentrated in coastal and western tracts, less in central tracts. Western tract loan activity was greater than average because this area is undergoing conversion from agricultural to urban land uses. Coastal tracts had greater than average rates because of continued expansion of condominium development. Central tracts are mainly commercial, industrial or lower value single-family dwellings and have large black populations. High positive correlations were found among lending rates and income; moderate positive correlations with age and household size; moderate negative with percent black. Geographic discrimination in lending ("redlining") may be suspected, but insufficient quality and quantity of data render such conclusions tentative.
Show less
Date Issued: 1983
PURL: http://purl.flvc.org/fcla/dt/14156
Subject Headings: Mortgage loans--Florida--Broward County
Format: Document (PDF)

Current FAU Student Theses and Dissertations 2007 to date (76)	+ -
Legacy FAU Student Theses and Dissertations 1967-2006 (51)	+ -
FAU College Collections (7)	+ -

Geographic information systems (15)	+ -
Remote sensing (7)	+ -
Sustainable development (6)	+ -
Ecosystem management (4)	+ -
Spatial analysis (Statistics) (4)	+ -

Everglades (Fla) (3)	+ -
Gas dynamics (3)	+ -
Geology, Stratigraphic (3)	+ -
Ground penetrating radar (3)	+ -
Habitat (3)	+ -
Migration, Internal--Florida (3)	+ -
Sea level rise (3)	+ -
Aerial photogrammetry (2)	+ -
Beaches--Florida (2)	+ -
Biogenic gas (2)	+ -
Cities and towns (2)	+ -
City planning (2)	+ -
Climatic changes (2)	+ -
Community development, Urban (2)	+ -
Continental shelf (2)	+ -
Coral reef ecology (2)	+ -
Dissertations, Academic -- Florida Atlantic University (2)	+ -
Economic geography (2)	+ -
Environmental aspects (2)	+ -
Everglades (Fla.) (2)	+ -
Florida--Population--Statistics (2)	+ -
Geographic information systems. (2)	+ -
Greenhouse gases (2)	+ -
Hydrogeology (2)	+ -
Image analysis (2)	+ -

Florida (18)	+ -
Palm Beach County (3)	+ -
United States (3)	+ -
Miami-Dade County (2)	+ -
Arthur R. Marshall Loxahatchee National Wildlife Refuge (Fla.) (1)	+ -

Atlantic Coast (U.S.) (1)	+ -
Beach erosion--Florida--Broward County (1)	+ -
Boca Raton (1)	+ -
Broward County (1)	+ -
Casuarina--Florida (1)	+ -
Coastal zone management--Florida--Broward County (1)	+ -
Continental shelf--Florida (1)	+ -
Environmental aspects (1)	+ -
Environmental mapping--Florida (1)	+ -
Evergaldes (1)	+ -
Everglades National Park (1)	+ -
Florida Bay (1)	+ -
Florida Reef Tract (1)	+ -
Geomorphological mapping--Florida--Broward County (1)	+ -
Glass waste--Recycling--Florida--Broward County (1)	+ -
Hydrology--Trinidad and Tobago--Trinidad (1)	+ -
Kissimmee River Valley (Fla.) (1)	+ -
Kissimmee River Watershed (1)	+ -
Little Havana (Miami, Fla.) (1)	+ -
Louisiana (1)	+ -
Miami (1)	+ -
Petroleum industry and trade--Alaska--Beaufort Sea (1)	+ -
Rotenberger Wildlife Management Area (Fla.) (1)	+ -
Shore protection--Florida--Broward County (1)	+ -
Snapper Creek (C-2) canal (1)	+ -

Search In

Pages

Pages

Sort Results By:

Narrow results by:

Collection

Topical Subject

Geographic Subject

Temporal Subject

Genre Subject

Genre

Type of Resource

Language

Creator

Format