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Title: Population dynamics in spatially explicit lattice epidemic models.
Creator: St. John, Shane C., Florida Atlantic University, Wille, Luc T.
Abstract/Description: Presented is a computational implementation simulating the propagation of an infectious disease through a host population extended over a 2-dimensional square lattice. The model incorporates the effects of spatial distribution allowing for an analysis of the persistence and dynamics of the disease. Computational issues are discussed along with the results of the simulations. The simulations show that there is a threshold or critical population density. Below the critical density the disease...
Show morePresented is a computational implementation simulating the propagation of an infectious disease through a host population extended over a 2-dimensional square lattice. The model incorporates the effects of spatial distribution allowing for an analysis of the persistence and dynamics of the disease. Computational issues are discussed along with the results of the simulations. The simulations show that there is a threshold or critical population density. Below the critical density the disease dies out and above it, the disease persists endemically. Population mixing affects the disease's ability to persist and, hence, the critical density. Higher degrees of mixing improve a disease's ability to persist. The model is then studied analytically in the mean-field point approximation limit. Higher mean-field approximations, which better account for the spatial inhomogeneities of the spatially discrete computational model, are also considered.
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Date Issued: 1997
PURL: http://purl.flvc.org/fcla/dt/15419
Subject Headings: Epidemics--Computer simulation, Population density, Population
Format: Document (PDF)

Title: Population biology and larval development of the terebellid polychaete Nicolea zostericola.
Creator: Eckelbarger, Kevin J., Harbor Branch Oceanographic Institute
Date Issued: 1974
PURL: http://purl.flvc.org/FCLA/DT/3176679
Subject Headings: Polychaeta, Population biology, Terebellida
Format: Document (PDF)

Title: Basic knowledge of Alzheimer’s disease in rural populations.
Creator: Wiese, Lisa Kirk, Williams, Christine L., Tappen, Ruth M., Graduate College
Date Issued: 2013-04-12
PURL: http://purl.flvc.org/fcla/dt/3361371
Subject Headings: Alzheimer's disease, Rural population
Format: Document (PDF)

Title: Population projection methods: A critique for minor civil divisions.
Creator: Benedict, Craig Neil., Florida Atlantic University, Schultz, Ronald R., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: This paper presents a comprehensive population projection framework for small area population estimates and projections. Interested professionals can learn a progression of research tasks and considerations that will lead to the development of a reliable projection model. This monograph offers a range of technical aspects from simple non-component to more complex component methodologies. The idiosyncrasies of small area projections will be emphasized. There exists a significant demand for...
Show moreThis paper presents a comprehensive population projection framework for small area population estimates and projections. Interested professionals can learn a progression of research tasks and considerations that will lead to the development of a reliable projection model. This monograph offers a range of technical aspects from simple non-component to more complex component methodologies. The idiosyncrasies of small area projections will be emphasized. There exists a significant demand for simple, relevant substate population projections. Local public and private planning sectors have suffered from the irrelevance of national projection models. This thesis illuminates the data requirements, techniques and practical considerations in the choice of a population projection model. Local government's comprehensive plans, according to Florida law, must analyze existing conditions and project future needs based on population projections. Many pragmatic applications of population projections can lead to the effective implementation of comprehensive plans.
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Date Issued: 1990
PURL: http://purl.flvc.org/fcla/dt/14679
Subject Headings: Population forecasting--Florida, Population forecasting--Models
Format: Document (PDF)

Title: Population Genetic Structure, Movement Patterns, and Environmental Preferences of the Pelagic Wahoo, Acanthocyhium solandri.
Creator: Theisen, Timothy Charles, Florida Atlantic University, Baldwin, John D., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: The wahoo, Acanthocyhium solandri, is a pelagic marine fish which inhabits tropical, subtropical, and warm temperate waters worldwide. Despite being highly mobile and economically important over most of their range, there is little scientific data concerning population structure, movement patterns, or environmental preferences of wahoo. In this study I investigate wahoo genetic population structure and phytogeography on a global scale, and deploy pop-up satellite archival tags (PSA T's) in...
Show moreThe wahoo, Acanthocyhium solandri, is a pelagic marine fish which inhabits tropical, subtropical, and warm temperate waters worldwide. Despite being highly mobile and economically important over most of their range, there is little scientific data concerning population structure, movement patterns, or environmental preferences of wahoo. In this study I investigate wahoo genetic population structure and phytogeography on a global scale, and deploy pop-up satellite archival tags (PSA T's) in the western Atlantic Ocean to determine movement patterns and environmental preferences of wahoo. Wahoo population genetic structure was examined across their entire global range with intron six of lactate dehydrogenase-A (ldhA6, 10 locations, N = 213) and mtDNA cytochrome h (Cyth, 13 locations, N = 322). Results show extensive sharing ofhaplotypes and no significant structure between all locations (mtDNA ~ST < 0.0001, P = 0.634; nuclear FsT = 0.0125, P = 0.1 06). Overall nuclear heterozygosity (H = 0.714) and mtDNA haplotype diversity (h = 0.918) are both high, while overall mtDNA nucleotide diversity (n = 0.006) and nuclear nucleotide diversity (n = 0.004) are uniformly low. Coalescence indicates an effective female population size CNeF) at - 816,000, and a population bottleneck - 690,000 years ago. Movement patterns and environmental preferences were investigated by deploying PSA T's onto four individual wahoo in the western Atlantic Ocean. Tagging success rate (75%) validates the deployment protocol developed for this project. Results indicate that wahoo in the western Atlantic ocean spend the greatest portion of their time between 0 and 20 meters of depth, and between temperatures of 20oC and 26°C. More time was spent near the deeper extremes of their range during the nocturnal period, and daily visits to the surface were observed. Wahoo were observed traveling north in Fall and Winter, contrary to previous notions concerning the migratory movements of this species. The genetic results indicate a worldwide stock for wahoo, which reinforces the mandate for international cooperation on fisheries issues. The PSA T results demonstrate the value of the acquired data to the investigation of important life history parameters in pelagic species. The information generated from this project will benefit fisheries managers, marine biologists, evolutionary biologists, and both commercial and recreational fishing interests.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00000880
Subject Headings: Population genetics, Marine biology, Biological diversity, Fish populations--Conservation
Format: Document (PDF)

Title: Florida since 1850: Shifting patterns of population growth.
Creator: Drapeau, Jeanne L., Florida Atlantic University, Schultz, Ronald R., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Florida's population growth has been spatially and temporally uneven. Significant growth occurred in different regions of the state during certain periods of time. This differential growth was a result of specific socioeconomic conditions that varied both temporally and spatially. Florida was granted statehood 1845 and served as the southern extension of the plantation system. Growth was high in the northern regions of Florida during the antebellum years. After reconstruction, railroad...
Show moreFlorida's population growth has been spatially and temporally uneven. Significant growth occurred in different regions of the state during certain periods of time. This differential growth was a result of specific socioeconomic conditions that varied both temporally and spatially. Florida was granted statehood 1845 and served as the southern extension of the plantation system. Growth was high in the northern regions of Florida during the antebellum years. After reconstruction, railroad infrastructure was developed that connected the distant reaches of the state with each other and the rest of the country. This facilitated the growth of the central regions of the peninsula. The construction of roads and the popularity of the automobile brought settlers and land developers to the southern regions of Florida in the early twentieth century. After a growth slump during the Depression, activities of World War II once again stimulated growth in the state, especially in the southeastern peninsula. The recent phenomenon of elderly migration has shifted growth to the less populated areas of the southwestern peninsula.
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Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/15059
Subject Headings: Population, Cities and towns--Florida--Growth, Florida--Population, Migration, Internal--Florida, Florida--Population--Statistics
Format: Document (PDF)

Title: New paternity analyses may confound current population models for loggerhead sea turtles (caretta caretta).
Creator: Lasala, Jacob, Harrison, J. S., Williams, K., Frick, M, Rostal, D. C., Wyneken, Jeanette, Graduate College
Date Issued: 2013-04-12
PURL: http://purl.flvc.org/fcla/dt/3361944
Subject Headings: Loggerhead turtle, Caretta caretta, Polyandry, Population Dynamics
Format: Document (PDF)

Title: SPLAT CAM: mapping plankton distributions with bioluminescent road-kill.
Creator: Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued: 2002
PURL: http://purl.flvc.org/FCLA/DT/3172999
Subject Headings: Plankton, Plankton populations, Bioluminescence, Dinoflagellates, Animals --Classification
Format: Document (PDF)

Title: Larval development and population aspects of the reef-building polychaete Phragmatopoma lapidosa from the east coast of Florida.
Creator: Eckelbarger, Kevin J., Harbor Branch Oceanographic Institute
Date Issued: 1976
PURL: http://purl.flvc.org/FCLA/DT/3174429
Subject Headings: Plankton, Larvae, Population, Polychaeta, Reef ecology
Format: Document (PDF)

Title: Separation and concentration of phytoplankton populations using centrifugal elutriation.
Creator: Pomponi, Shirley A., Cucci, T. L.
Date Issued: 1989
PURL: http://purl.flvc.org/FCLA/DT/3342295
Subject Headings: Phytoplankton populations, Flow cytometry, Cell separation
Format: Document (PDF)

Title: POPULATION LIMITATIONS OF THE FLORIDA APPLE SNAIL (POMACEA PALUDOSA).
Creator: Drumheller, Danielle, Dorn, Nathan, Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
Abstract/Description: In this thesis I examined factors limiting population success of apple snails (Pomacea spp.) in Florida wetlands. First, I examined effects of summertime hydropattern in replicated wetlands on reproduction and juvenile growth. Annual reproductive effort of Florida apple snails (Pomacea paludosa) and the invasive apple snail P. maculata under was not affected by deeper water in the summer. When juvenile P. paludosa were forced to grow in reportedly favorable and relatively deeper summertime...
Show moreIn this thesis I examined factors limiting population success of apple snails (Pomacea spp.) in Florida wetlands. First, I examined effects of summertime hydropattern in replicated wetlands on reproduction and juvenile growth. Annual reproductive effort of Florida apple snails (Pomacea paludosa) and the invasive apple snail P. maculata under was not affected by deeper water in the summer. When juvenile P. paludosa were forced to grow in reportedly favorable and relatively deeper summertime depths survival was high between treatments and growth was unaffected. In the other chapter I examined interactions between the two snails with a series of observations and experiments. I examined historical data on the assemblages and found that P. paludosa were locally extinguished in one of the wetlands within six years of invasion by P. maculata. Two field experiments gave conflicting results about the importance of interspecific inhibition of P. paludosa by the invasive snail, but in either case resource reduction could not be demonstrated. Lab exposure to P. maculata chemical cues strongly inhibited P. paludosa growth, although P. paludosa did not behaviorally avoid mucus of P. maculata. In mesocosms Pomacea paludosa growth was reduced with increasing exposure to adult P. maculata waterborne cues, and the results suggest that contact with mucus at a low exposure may even have a greater inhibiting effect. This interspecific direct chemical growth inhibition was novel for gastropods, but could be more generally important, and its potential impacts to P. paludosa populations should be explored further.
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Date Issued: 2020
PURL: http://purl.flvc.org/fau/fd/FA00013593
Subject Headings: Florida applesnail, Pomacea paludosa, Snail populations
Format: Document (PDF)

Title: A SURVEY OF THE FISH FAUNA IN THE SHALLOW MARINE WATERS OF CLAM LAGOON, ADAK, ALASKA.
Creator: HANCOCK, MAX JAY., Florida Atlantic University, Courtenay, Walter R. Jr., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: A seasonal sampling of fishes was collected by seine from the sand-gravel areas of Clam Lagoon, Adak, Alaska. The community structure was compared to the structure of communities described from surveys of other areas. The seasonality of the fish fauna was examined for possible relationships with three exogenous factors; salinity, temperature and wind velocity. Length frequency histograms and substrate preferences are presented for seven species. The shallow-water seasonality of 13 species is...
Show moreA seasonal sampling of fishes was collected by seine from the sand-gravel areas of Clam Lagoon, Adak, Alaska. The community structure was compared to the structure of communities described from surveys of other areas. The seasonality of the fish fauna was examined for possible relationships with three exogenous factors; salinity, temperature and wind velocity. Length frequency histograms and substrate preferences are presented for seven species. The shallow-water seasonality of 13 species is presented. The ontogenetic and seasonal diets of seven species are discussed.
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Date Issued: 1975
PURL: http://purl.flvc.org/fcla/dt/13711
Subject Headings: Fish populations--Alaska--Clam Lagoon, Adak
Format: Document (PDF)

Title: AN ANALYSIS OF THE GEOGRAPHY OF SEX RATIO IN THE UNITED STATES.
Creator: GELLIS, ANDREW NOAH., Florida Atlantic University, Lee, David R., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Frontier areas and rural areas historically have been predominantly male (high sex ratio); urban areas were predominantly female (low sex ratio). In 1970 the Middle West scored average on the sex ratio scale for all age cohorts; the West was high, the South low. Highest sex ratio was in port and military locales; lowest was in urban areas of the Northeast and South. Two regression models reveal that percentage urban, net migration, and percentage Black were most important explanators of sex...
Show moreFrontier areas and rural areas historically have been predominantly male (high sex ratio); urban areas were predominantly female (low sex ratio). In 1970 the Middle West scored average on the sex ratio scale for all age cohorts; the West was high, the South low. Highest sex ratio was in port and military locales; lowest was in urban areas of the Northeast and South. Two regression models reveal that percentage urban, net migration, and percentage Black were most important explanators of sex ratio. The greater life expectancy of females and their tendency to concentrate in the cities, the larger net migration rate of males, and the lower sex ratio of Blacks, were causal. Analysis by age cohort revealed regional differences exist only after age 34. After adjusting for the above independent variables, the West still scored highest and the South lowest.
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Date Issued: 1981
PURL: http://purl.flvc.org/fcla/dt/14061
Subject Headings: Sex ratio, United States--Population
Format: Document (PDF)

Title: A statistical examination of the relationship between xenophobia and environmental parameters in pre-statal populations.
Creator: Zarnowski, David., Florida Atlantic University, Schumann, Betsy A.
Abstract/Description: Human history is replete with accounts of xenophobia and warfare. Two general suppositions are that such behaviors did not develop without precedence and that they predate the establishment of statal cultures. Using data derived from the Human Relations Area Files, fifty pre-statal populations are examined for xenophobic behaviors such as frequent hostilities with out-groups, warfare, and slavery utilization, using specific environmental and cultural criteria. These criteria are assigned...
Show moreHuman history is replete with accounts of xenophobia and warfare. Two general suppositions are that such behaviors did not develop without precedence and that they predate the establishment of statal cultures. Using data derived from the Human Relations Area Files, fifty pre-statal populations are examined for xenophobic behaviors such as frequent hostilities with out-groups, warfare, and slavery utilization, using specific environmental and cultural criteria. These criteria are assigned discrete numerical values which are programmed into Statistical Program for the Social Sciences (SPSS) software. The use of statistical analyses can determine if there is a correlation between environmental and cultural variables, and whether these variables in marginal climatic conditions exert enough pressure to affect interpopulation relationships that would result in the formation of xenophobic reactions such as hostility or warfare.
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Date Issued: 2000
PURL: http://purl.flvc.org/fcla/dt/12729
Subject Headings: Xenophobia, Social conflict, Population--Statistics
Format: Document (PDF)

Title: A STUDY OF THE MORPHOLOGY AND ECOLOGICAL IMPACT OF TILAPIA AUREA (PISCES; CICHLIDAE) IN FLORIDA.
Creator: BLAKESLEY, HOWARD LYMAN., Florida Atlantic University, Courtenay, Walter R. Jr.
Abstract/Description: A description of Tilapia aurea based on specimens from Florida is presented with an updated synonomy. The Florida specimens are compared with descriptions of specimens from Israel. It is concluded that Florida specimens have the same range in morphological variability as specimens from Isreal. The experimental work completed here indicates that Tilapia aurea does not adversely affect native fish populations. It is speculated that Tilapia aurea may have stabilized the experimental fish...
Show moreA description of Tilapia aurea based on specimens from Florida is presented with an updated synonomy. The Florida specimens are compared with descriptions of specimens from Israel. It is concluded that Florida specimens have the same range in morphological variability as specimens from Isreal. The experimental work completed here indicates that Tilapia aurea does not adversely affect native fish populations. It is speculated that Tilapia aurea may have stabilized the experimental fish populations by a "polyculture effect."
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Date Issued: 1975
PURL: http://purl.flvc.org/fcla/dt/13704
Subject Headings: Tilapia--Florida, Fish populations--Florida
Format: Document (PDF)

Title: POPULATION ECOLOGY AND VITAL RATES OF APPLE SNAILS (POMACEA SPP.) IN WETLANDS.
Creator: Barrus, Nathan T., Dorn, Nathan J., Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
Abstract/Description: In this thesis, I explored the abiotic and biotic factors that explain the variation in reproduction, survival, and individual growth of the Florida Apple Snail (Pomacea paludosa), and I combined reproduction, survival, and individual growth to determine the factors limiting Florida Apple Snail populations. First, I examined how the variation in reproduction of the Florida Apple Snail and another non-native congener (P. maculata) can be explained by depth, temperature, photoperiod, and adult...
Show moreIn this thesis, I explored the abiotic and biotic factors that explain the variation in reproduction, survival, and individual growth of the Florida Apple Snail (Pomacea paludosa), and I combined reproduction, survival, and individual growth to determine the factors limiting Florida Apple Snail populations. First, I examined how the variation in reproduction of the Florida Apple Snail and another non-native congener (P. maculata) can be explained by depth, temperature, photoperiod, and adult densities. I also examined how metaphyton total phosphorus (TP) influenced individual growth rates of both species. I found that P. paludosa optimally reproduce in shallower water than P. maculata, that both species respond positively to increased metaphyton TP, and that P. paludosa respond weaker to variation in metaphtyon TP than P. maculata. Then, I examined individual growth across seasons, and examined how size-dependent survival varied across seasons in and out of the presence predators. I also investigated predators that strongly influence survival rates. I found that individual growth was slower in the dry season than the wet season, that survival was not size-dependent nor seasonal when predators were excluded from cages, and that survival was size-dependent in the dry season but not the wet season when in the presence of predators. Greater Sirens and Giant Water Bugs were found to be strong predators of P. paludosa < 10 mm Shell Length (SL), Greater Siren and Giant Water Bugs seasonal abundances were responsible for the differences in size-dependent survival across seasons. Finally, I incorporated differences in ideal hydrological and temperature conditions for reproduction, seasonal differences in individual growth, and changes in survival in and out of the presence of predators onto a zero-population growth isocline. I found that optimal hydrological and temperature conditions, and increased growth in the dry season, could not make up for losses of snails < 10 mm SL by predators which suggested that predators are limiting P. paludosa populations in our study area.
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Date Issued: 2022
PURL: http://purl.flvc.org/fau/fd/FA00013919
Subject Headings: Florida applesnail, Population ecology, Everglades (Fla.)
Format: Document (PDF)

Title: ARE SOUTH FLORIDA’S GOPHER TORTOISE POPULATION’S GENETICALLY DIFFERENTIATED FROM EACH OTHER?.
Creator: Rothberg, Olivia, Frazier, Evelyn, Hughes, Colin, Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
Abstract/Description: Gopher Tortoises are an imperiled terrestrial tortoise considered ecosystem engineers, as their burrows support over 350 species of “commensals”. Due to extensive anthropogenic habitat destruction and fragmentation, tortoise populations have significantly declined over the past 100 years. This isolation is leading to a premature loss of genetic variation, further precipitating the decline of this species. Understanding the genetic structure of this species can aid management decisions through...
Show moreGopher Tortoises are an imperiled terrestrial tortoise considered ecosystem engineers, as their burrows support over 350 species of “commensals”. Due to extensive anthropogenic habitat destruction and fragmentation, tortoise populations have significantly declined over the past 100 years. This isolation is leading to a premature loss of genetic variation, further precipitating the decline of this species. Understanding the genetic structure of this species can aid management decisions through intentionally relocating animals based on genetic units and historic gene flow, to preserve adaptive diversity and evolutionary potential on a large scale. I investigated whether Southeast Florida has a genetically distinct subpopulation of Gopher Tortoises in the unexamined southeasternmost extent of their range, from Palm Beach to Miami-Dade counties, using 9 microsatellite loci previously characterized for this species (Schwartz et al 2003) and found that our populations are only modestly differentiated from each other, and have greater genetic diversity than other populations.
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Date Issued: 2023
PURL: http://purl.flvc.org/fau/fd/FA00014362
Subject Headings: Gopher tortoises, Florida, South, Population genetics
Format: Document (PDF)

Title: A generalized stochastic birth/death population model based on Indian RiverLagoon dolphins.
Creator: Stonger, Jon, Noonburg, Erik G., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: For over a decade, researchers at Harbor Branch Oceanographic Institute (HBOI) have conducted surveys of the bottlenose dolphin (Tursiops truncatus) population of Indian River Lagoon (IRL) in Florida. I have constructed a 4-stage population model using the statistical program R. The model is used to conduct a viability analysis by analyzing the relationship between birth, calf and adult survival rates. The power analysis compares survey frequency to expected confidence intervals in estimating...
Show moreFor over a decade, researchers at Harbor Branch Oceanographic Institute (HBOI) have conducted surveys of the bottlenose dolphin (Tursiops truncatus) population of Indian River Lagoon (IRL) in Florida. I have constructed a 4-stage population model using the statistical program R. The model is used to conduct a viability analysis by analyzing the relationship between birth, calf and adult survival rates. The power analysis compares survey frequency to expected confidence intervals in estimating abundance. The sensitivity analysis shows that the population is most sensitive to changes in adult survival, followed by birth rate and calf survival. The model shows a strong chance of viability over a 50 year time span. The population is vulnerable to long periods of decline if birth, calf or adult survival rates fall below certain thresholds. Overall, the model simulates the future impacts of demographic change, providing a tool for conservation efforts.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004163, http://purl.flvc.org/fau/fd/FA00004163
Subject Headings: Animal populations -- Estimates, Bottlenose dolphin -- Florida -- Indian River Lagoon -- Geographical distribution, Indian River (Fla : Lagoon), Marine mammal populations -- Estimates -- Florida -- Mathematical models, Population biology, Stochastic processes
Format: Document (PDF)

Title: Point count censusing from a submersible to estimate reef fish abundance over large areas.
Creator: Shipp, R. L., Tyler, W. A., III, Jones, Robert S., Harbor Branch Oceanographic Institute
Date Issued: 1986
PURL: http://purl.flvc.org/FCLA/DT/3340762
Subject Headings: Fish populations--Estimates, Fishes Counting, Reef fishes, Submersibles
Format: Document (PDF)

Title: Population characteristics of the sea starOreaster reticulatus in the Bahamas and across the Caribbean.
Creator: Scheibling, R. E., Metaxas, Anna, Harbor Branch Oceanographic Institute
Date Issued: 2001
PURL: http://purl.flvc.org/fau/fd/FA00007393
Subject Headings: Bahamas, Caribbean Sea, Starfishes, Sea stars, Population biology
Format: Document (PDF)

FAU Theses and Dissertations (45)	+ -
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Population biology (10)	+ -
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Population (5)	+ -
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Social behavior in animals (4)	+ -
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Predation (Biology) (3)	+ -
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