Current Search: Ecology (x)
Pages
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Title
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Mechanisms that generate resource pulses and drive wading bird nesting in a fluctuating wetland.
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Creator
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Botson, Bryan A., Charles E. Schmidt College of Science, Department of Biological Sciences
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Abstract/Description
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Variation in the seasonal water level fluctuations of tropical and subtropical wetlands controls the production and concentration of aquatic fauna that support breeding wading birds. However, little is known about how particular components of the annual hydrologic cycle affect processes that control food availability and reproduction. This thesis identifies specific mechanisms responsible for transforming wet season prey standing stock into dry season prey concentrations, links landscape...
Show moreVariation in the seasonal water level fluctuations of tropical and subtropical wetlands controls the production and concentration of aquatic fauna that support breeding wading birds. However, little is known about how particular components of the annual hydrologic cycle affect processes that control food availability and reproduction. This thesis identifies specific mechanisms responsible for transforming wet season prey standing stock into dry season prey concentrations, links landscape hydrological patterns to wading bird nesting, and presents a predictive model of Wood Stork nesting. I examined the supoort for several a priori hypotheses of factors affecting wading bird prey concentrations and wading bird nest effort. Factors affecting the concentration and vulnerability of prey were important for transferring secondary production to higher trophic levels. Receding water levels, microtopographic variation, and high standing stocks of prey were critical for generating pulses of food availabiltiy to meet the high energy requirements of breeding predatory birds.
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Date Issued
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2012
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PURL
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http://purl.flvc.org/FAU/3358281
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Subject Headings
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Wetland ecology, Restoration ecology, Wood stork, Habitat, Predation (Biology), Water birds, Habitat
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Format
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Document (PDF)
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Title
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Taxonomy and ecology of the deep-pelagic fish family Melamphaidae, with emphasis on interactions with a mid-ocean ridge system.
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Creator
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Bartow, Kyle Allen., Charles E. Schmidt College of Science, Department of Biological Sciences
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Abstract/Description
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Much of the world's oceans lie below a depth of 200 meters, but very little is known about the creatures that inhabit these deep-sea environments. The deep-sea fish family Melamphaidae (Stephanoberyciformes) is one such example of an understudied group of fishes. Samples from the MAR-ECO (www.mar-eco.no) project represent one of the largest melamphaid collections, providing an ideal opportunity to gain information on this important, but understudied, family of fishes. The key to the family...
Show moreMuch of the world's oceans lie below a depth of 200 meters, but very little is known about the creatures that inhabit these deep-sea environments. The deep-sea fish family Melamphaidae (Stephanoberyciformes) is one such example of an understudied group of fishes. Samples from the MAR-ECO (www.mar-eco.no) project represent one of the largest melamphaid collections, providing an ideal opportunity to gain information on this important, but understudied, family of fishes. The key to the family presented here is the first updated, comprehensive key since those produced by Ebeling and Weed (1963) and Keene (1987). Samples from the 2004 MAR-ECO cruise and the U.S. National Museum of Natural History provided an opportunity to review two possible new species, the Scopelogadus mizolepis subspecies, and a Poromitra crassiceps species complex. Results show that Scopeloberyx americanus and Melamphaes indicoides are new species, while the two subspecies of Scopelogadus mizolepis are most likely o nly one species and the Poromitra crassiceps complex is actually several different species of Poromitra. Data collected from the MAR-ECO cruise provided an opportunity to study the distribution, reproductive characteristics and trophic ecology of the family Melamphaidae along the Mid-Atlantic Ridge (MAR). Cluster analysis showed that there are five distinct groups of melamphaid fishes along the MAR. This analysis also supported the initial observation that the melamphaid assemblage changes between the northern and southern edges of an anti-cyclonic anomaly that could be indicative of a warm-core ring. Analysis of the reproductive characteristics of the melamphaid assemblage revealed that many of the female fishes have a high gonadosomatic index (GSI) consistent with values found for other species of deep-sea fishes during their spawning seasons., This may indicate that melamphaids use this ridge as a spawning ground. Diets of the melamphaid fishes were composed primarily of ostracods, a mphipods, copepods and euphausiids. Scopelogadus was the only genus shown to have a high percent of gelatinous prey in their digestive system, while Melamphaes had the highest concentration of chaetognaths. This work presents data on the ecology and taxonomy of the family Melamphaidae and provides a strong base for any future work on this biomass-dominant family of fishes.
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Date Issued
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2010
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PURL
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http://purl.flvc.org/FAU/2867331
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Subject Headings
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Coral reef ecology, Marine biology, Marine ecology, Deep-sea biology
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Format
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Document (PDF)
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Title
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Gopher tortoise habitat use and spatial distribution in a southeastern Florida population.
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Creator
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King, E. H., Florida Atlantic University, Wyneken, Jeanette, Charles E. Schmidt College of Science, Department of Biological Sciences
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Abstract/Description
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Gopher tortoise ecology is poorly understood in the rapidly developing, urbanized southeastern end of its range. This study reports on a population at Florida Atlantic University in Boca Raton, Florida. Burrow surveys were conducted from May to July 2003 and May to August 2004. Burrows were marked and mapped as was vegetative cover. Burrow locations were tested against vegetative cover height and soil types. Burrow locations did not differ among soil types. The densest concentrations of...
Show moreGopher tortoise ecology is poorly understood in the rapidly developing, urbanized southeastern end of its range. This study reports on a population at Florida Atlantic University in Boca Raton, Florida. Burrow surveys were conducted from May to July 2003 and May to August 2004. Burrows were marked and mapped as was vegetative cover. Burrow locations were tested against vegetative cover height and soil types. Burrow locations did not differ among soil types. The densest concentrations of burrows were located in areas of low, patchy vegetative cover. This is consistent with known gopher tortoise habitat preferences elsewhere in their range. Gopher tortoises on this site appeared to be acclimated to anthropogenic disturbance.
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Date Issued
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2005
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PURL
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http://purl.flvc.org/fcla/dt/13272
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Subject Headings
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Ecology, Gopher tortoise--Geographical distribution, Habitat (Ecology)--Florida, Zoogeography
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Format
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Document (PDF)
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Title
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Software development for ecological data systems.
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Creator
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Lostal, Sergio L., Florida Atlantic University, Larrondo-Petrie, Maria M., Solomon, Martin K., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
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Abstract/Description
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Software development for ecological data systems is concentrated in the description, modeling, and standardization of large amounts of ecological data. Ecological data assembled in many formats is very difficult to reuse. This thesis develops a database model that supports the storage of heterogeneous data in standardized formats. Ecological data standardization is solved with the specification of a structure conversion system. Because input formats cannot be predicted, a scientific data...
Show moreSoftware development for ecological data systems is concentrated in the description, modeling, and standardization of large amounts of ecological data. Ecological data assembled in many formats is very difficult to reuse. This thesis develops a database model that supports the storage of heterogeneous data in standardized formats. Ecological data standardization is solved with the specification of a structure conversion system. Because input formats cannot be predicted, a scientific data description language was created to control the execution of the conversion system. System analysis is based on interviews with South Florida Water Management District scientists conducting ecosystem research, and ecological data collected at Lake Okeechobee, Florida, during a five-year study. Object-oriented and structural methods were used for analysis. Development is complemented with an introduction to user interfaces.
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Date Issued
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1996
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PURL
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http://purl.flvc.org/fcla/dt/15344
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Subject Headings
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Ecology--Data processing, Information storage and retrieval systems--Ecology, Okeechobee, Lake (Fla)
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Format
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Document (PDF)
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Title
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The Vessel: The Connection of Pottery and Earth Consciousness.
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Creator
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Turnbull, Maltiben Dave, Caputi, Jane, Florida Atlantic University
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Abstract/Description
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The Vessel: The Connection o f Pottery and Earth Consciousness, addresses the topic of Earth Consciousness through an exploration of the crafting and use of clay vessels among three indigenous cultures, from parts of the Southwest United States, and those from parts of India and Africa. Earth Consciousness is the awareness that the Earth is a conscious living being and that one is connected to the Earth through every cycle of one’s life. Myths of creation describing the existence of clay and...
Show moreThe Vessel: The Connection o f Pottery and Earth Consciousness, addresses the topic of Earth Consciousness through an exploration of the crafting and use of clay vessels among three indigenous cultures, from parts of the Southwest United States, and those from parts of India and Africa. Earth Consciousness is the awareness that the Earth is a conscious living being and that one is connected to the Earth through every cycle of one’s life. Myths of creation describing the existence of clay and pottery before the origin of human beings are present in these cultures, some of who also believe that they were created out of clay. Thereby, their connection to the Earth, strengthened by this belief, is deep and it is exhibited through the use of clay vessels in ritual ceremonies and daily activities. The potters in these cultures express their realization of clay as a gift of the Earth, whom they conceptualize as Mother Earth, in the ceremonies they perform prior to collecting clay, crafting the vessels, and firing them. Among contemporary ceramists, one also finds works meant to remind the viewers of their physical, spiritual, and political connection to the Earth. In my dissertation, I explore the works of four such ceramists, Sadashi Inuzuka, Gabrielle Koch, Joseph Lonewolf, and Denise Romecki. I also discussed the philosophy behind my own artwork, which I have created as part of requirement for graduation and exhibited at the university galleries. This dissertation clarifies my concepts of Earth Consciousness bringing attention to the urgent need for individual action in the form of personal behavioral change and worldview towards the Earth and other living beings. My ideas are derived from various sources including indigenous spirituality, Hinduism, and Buddhism. My hope is that the words of this dissertation and the ceramic work I am presenting will stir in the reader and the viewer a desire to strengthen their relationship to the Earth. It is my belief that individual action can be a powerful tool in countering further destruction of the planet.
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Date Issued
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2007
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PURL
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http://purl.flvc.org/fau/fd/FA00000998
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Subject Headings
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Pottery--Symbolism, Human ecology--Religious aspects, Environmental ethics, Ecology--Philosophy
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Format
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Document (PDF)
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Title
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Biogenic gas dynamics in peat soil blocks using ground penetrating radar: a comparative study in the laboratory between peat soils from the Everglades and from two northern peatlands in Minnesota and Maine.
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Creator
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Cabolova, Anastasija., Charles E. Schmidt College of Science, Department of Physics
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Abstract/Description
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Peatlands cover a total area of approximately 3 million square kilometers and are one of the largest natural sources of atmospheric methane (CH4) and carbon dioxide (CO2). Most traditional methods used to estimate biogenic gas dynamics are invasive and provide little or no information about lateral distribution of gas. In contrast, Ground Penetrating Radar (GPR) is an emerging technique for non-invasive investigation of gas dynamics in peat soils. This thesis establishes a direct comparison...
Show morePeatlands cover a total area of approximately 3 million square kilometers and are one of the largest natural sources of atmospheric methane (CH4) and carbon dioxide (CO2). Most traditional methods used to estimate biogenic gas dynamics are invasive and provide little or no information about lateral distribution of gas. In contrast, Ground Penetrating Radar (GPR) is an emerging technique for non-invasive investigation of gas dynamics in peat soils. This thesis establishes a direct comparison between gas dynamics (i.e. build-up and release) of four different types of peat soil using GPR. Peat soil blocks were collected at peatlands with contrasting latitudes, including the Everglades, Maine and Minnesota. A unique two-antenna GPR setup was used to monitor biogenic gas buildup and ebullition events over a period of 4.5 months, constraining GPR data with surface deformation measurements and direct CH4 and CO2 concentration measurements. The effect of atmospheric pressure was also investigated. This study has implications for better understanding global gas dynamics and carbon cycling in peat soils and its role in climate change.
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Date Issued
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2010
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PURL
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http://purl.flvc.org/FAU/2974433
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Subject Headings
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Wetland ecology, Wetland ecology, Wetland ecology, Gas dynamics, Soil permeability, Ground penetrating radar, Porous materials, Fluid dynamics
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Format
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Document (PDF)
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Title
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Effects of fish on reptile and amphibian community assemblages in wetlands of variable permanence.
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Creator
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Holbrook, Joshua D., Dorn, Nathan, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
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Abstract/Description
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Many herpetofaunal species are imperiled, and the causes of this are often a synergy of multiple factors. In wetlands specifically, two of the possible determinants of species occurrence and faunal community assemblage are fish presence and wetland permanence, which are not always correlated. Twenty wetlands were sampled in Jonathan Dickinson State Park, Florida, USA to observe how wetland herpetofaunal communities vary with fish, wetland permanence and other environmental factors....
Show moreMany herpetofaunal species are imperiled, and the causes of this are often a synergy of multiple factors. In wetlands specifically, two of the possible determinants of species occurrence and faunal community assemblage are fish presence and wetland permanence, which are not always correlated. Twenty wetlands were sampled in Jonathan Dickinson State Park, Florida, USA to observe how wetland herpetofaunal communities vary with fish, wetland permanence and other environmental factors. Herpetofaunal communities with and without fish were significantly different from one another and differences between herpetofaunal communities were primarily due to the contribution of four species of frogs, two generalist ranids and two specialist hylids. Wetland permanence had no observable effect on community structure. Fishless wetlands were significantly more species-rich and possessed higher numbers of individuals even for species that occurred in both fishless and fish wetlands, regardless of their permanence. These findings have implications for wetlands restoration and herpetofaunal conservation.
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Date Issued
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2014
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PURL
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http://purl.flvc.org/fau/fd/FA00004203, http://purl.flvc.org/fau/fd/FA00004203
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Subject Headings
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Amphibian surveys -- Florida -- Jonathan Dickinson State Park, Amphibians -- Conservation, Amphibians -- Ecology, Jonathan Dickinson State Park (Fla.), Reptiles -- Conservation, Reptiles -- Ecology, Wetland ecology, Wetlands -- Environmental aspects
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Format
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Document (PDF)
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Title
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A Modeling Study on The Effects of Seagrass Beds on the Hydrodynamics in the Indian River Lagoon.
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Creator
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Habib, MD Ahsan, Jiang, Mingshun, Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
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Abstract/Description
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Seagrass is a key stone component for the Indian River Lagoon (IRL) ecosystem, and therefore it is an important topic for many studies in the lagoon. This study focuses on the effects of seagrass beds on the hydrodynamics in the IRL. A hydrodynamic model based on the Delft3D modeling system has been developed for the southern IRL including the St. Lucie estuary, Ft. Pierce and St. Lucie Inlets, and adjacent coastal waters. The model is driven by freshwater inputs from the watershed, tides,...
Show moreSeagrass is a key stone component for the Indian River Lagoon (IRL) ecosystem, and therefore it is an important topic for many studies in the lagoon. This study focuses on the effects of seagrass beds on the hydrodynamics in the IRL. A hydrodynamic model based on the Delft3D modeling system has been developed for the southern IRL including the St. Lucie estuary, Ft. Pierce and St. Lucie Inlets, and adjacent coastal waters. The model is driven by freshwater inputs from the watershed, tides, meteorological forcing, and oceanic boundary forcing. The model has been systematically calibrated through a series of numerical experiments for key parameters, particularly the bottom roughness, and configuration including heat flux formulation and bottom bathymetry. The model skills were evaluated with quantitative metrics (point-to-point correlation, root-mean-square difference, and mean bias) to gauge the agreements between model and data for key variables including temperature, salinity, and currents. A three-year (2013-2015) simulation has been performed, and the results have been validated with available data including observations at HBOI Land-Ocean Biogeochemistry Observatory (LOBO) stations and in situ measurements from various sources. The validated model is then used to investigate the effects of 1) model vertical resolution (total number of model vertical layers), 2) spatial variability of surface winds, and 3) seagrass beds on the simulated hydrodynamics. The study focuses on the vicinity of Ft. Pierce Inlet, where significant seagrass coverage can be found. A series of numerical experiments were performed with a combination of different configurations. Overall, the experiment with 2-dimensional (2-D) winds, ten vertical layers and incorporating seagrass provided the most satisfactory outcomes. Overall, both vertical resolution and spatial variability of surface winds affect significantly the model results. In particular, increasing vertical resolution improves model prediction of temperature, salinity and currents. Similarly, the model with 2-D winds yields more realistic results than the model forced by 0-D winds. The seagrass beds have significant effects on the model results, particularly the tidal and sub-tidal currents. In general, model results show that both tidal and sub-tidal currents are much weaker due to increase bottom friction from seagrass. For tidal currents, the strongest impacts lie in the main channel (inter-coastal waterway) and western part of the lagoon, where strong tidal currents can be found. Inclusion of seagrass in the model also improves the simulation of sub-tidal currents. Seagrass beds also affect model temperature and salinity including strengthening vertical stratification. In general, seagrass effects vary over time, particularly tidal cycle with stronger effects seen in flood and ebb tides, and seasonal cycle with stronger effects in the summer than in winter.
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Date Issued
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2016
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PURL
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http://purl.flvc.org/fau/fd/FA00004774, http://purl.flvc.org/fau/fd/FA00004774
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Subject Headings
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Turtle grass--Environmental aspects., Seagrasses--Ecology., Grassed waterways., Wave resistance (Hydrodynamics), Wetland ecology., Estuarine ecology., Estuarine restoration., Coastal zone management.
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Format
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Document (PDF)
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Title
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An evaluation of methodology, dispersal and habitat usage of largemouth bass (Micropterus salmoides floridanus) from a supplemental stocking on Lake Okeechobee, Florida.
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Creator
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Jordan, Alyssa., Charles E. Schmidt College of Science, Department of Biological Sciences
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Abstract/Description
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The largemouth bass (Micropterus salmoides) fishery was at an all time low on Lake Okeechobee when experimental supplemental stockings were done to try and enhance local bass populations. Largemouth bass had never been stocked on a large lake like Lake Okeechobee. The objectives were to develop a methodology, study dispersal, and compare stocked versus wild bass habitat choices. The methodology underwent considerable changes between studies. Bass dispersed to the edges by the second sampling...
Show moreThe largemouth bass (Micropterus salmoides) fishery was at an all time low on Lake Okeechobee when experimental supplemental stockings were done to try and enhance local bass populations. Largemouth bass had never been stocked on a large lake like Lake Okeechobee. The objectives were to develop a methodology, study dispersal, and compare stocked versus wild bass habitat choices. The methodology underwent considerable changes between studies. Bass dispersed to the edges by the second sampling period, so a larger sampling area may be needed. Water depth and pH were found to be significantly different between wild and stocked bass. Hatchery bass are naèive about predators, which may have resulted in stocked bass not moving to shallower areas like wild bass. The pH was weakly correlated with depth, so differences may be partially due to the fact that as depth increases, pH may also increase.
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Date Issued
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2012
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PURL
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http://purl.flvc.org/FAU/3342199
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Subject Headings
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Largemouth bass, Habitat, Largemouth bass, Ecology, Freshwater ecology, Fishery management, Ecology
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Format
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Document (PDF)
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Title
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Determining vegetative complexity, biodiversity and species richness on tree islands of the northern Everglades.
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Creator
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Day, Irving M., IV., Florida Atlantic University, Gallagher, Jacqueline
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Abstract/Description
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Loss of species richness and vegetative biodiversity in the Greater Everglades Area is in large part due to human encroachment and compartmentalization causing altered hydroperiods, water levels and surface sheet flow. This study quantifies vegetative complexity, biodiversity and species richness on four tree islands within a near pristine area of the historical northern Everglades ecosystem. A Complexity Index (CI) was formulated by assessing multiple variables; high CI and low herbaceous...
Show moreLoss of species richness and vegetative biodiversity in the Greater Everglades Area is in large part due to human encroachment and compartmentalization causing altered hydroperiods, water levels and surface sheet flow. This study quantifies vegetative complexity, biodiversity and species richness on four tree islands within a near pristine area of the historical northern Everglades ecosystem. A Complexity Index (CI) was formulated by assessing multiple variables; high CI and low herbaceous species richness values are attributed to mature, late successional stage forests. There are structural and population differences on each of the tree islands studied with the more mature tree islands located in the south of the study area, the more disturbed, low CI valued sites to the north. Data from this study is to be used as a baseline study for the area, and will be used to test and track the effects of the Comprehensive Everglades Restoration Plan.
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Date Issued
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2006
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PURL
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http://purl.flvc.org/fcla/dt/13332
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Subject Headings
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Swamp ecology--Florida--Everglades, Tree islands--Florida--Everglades, Ecosystem management--Florida--Everglades, Tree island ecology--Florida--Everglades, Plant ecology--Florida--Everglades
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Format
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Document (PDF)
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Title
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Ecological and zoogeographical aspects of the fishes of the Indian River region of Florida.
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Creator
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Gilmore, R. G., Harbor Branch Oceanographic Institute
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Date Issued
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1973
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PURL
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http://purl.flvc.org/FCLA/DT/3179292
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Subject Headings
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Zoogeography, Fishes--Ecology, Indian River (Fla. : River), Ichthyology
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Format
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Document (PDF)
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Title
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Responses of common fouling organisms in the Indian River, Florida, to various predation and disturbance intensities.
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Creator
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Mook, David H., Harbor Branch Oceanographic Institute
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Date Issued
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1983
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PURL
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http://purl.flvc.org/FCLA/DT/3174848
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Subject Headings
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Fouling organisms, Predation (Biology), Predatory animals --Ecology, Reproduction, Sponges
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Format
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Document (PDF)
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Title
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Studies on fouling invertebrates in the Indian River, Florida 2: effect of Modulus modulus (Prosobranchia: Modulidae).
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Creator
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Mook, David H., Harbor Branch Oceanographic Institute
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Date Issued
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1977
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PURL
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http://purl.flvc.org/FCLA/DT/3186449
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Subject Headings
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Fouling organisms, Prosobranchia, Indian River (Fla. : Lagoon), Seagrasses--Ecology
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Format
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Document (PDF)
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Title
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Population trends, diet, genetics, and observations of Steller sea lions in Glacier Bay National Park.
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Creator
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Gelatt, Tom, Trites, Andrew W., Hastings, Kelly, Jemsion, Lauri, Pitcher, Ken, O'Corry-Crowe, Gregory
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Date Issued
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2007
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PURL
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http://purl.flvc.org/FCLA/DT/1199309
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Subject Headings
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Sea lions --Alaska, Marine mammals --Alaska, Marine mammals --Ecology
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Format
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Document (PDF)
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Title
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Food level effects on thecompetitive interactions of two co-occurring cladoceran zooplankton: Diaphanosoma brachyurum andDaphnia ambigua.
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Creator
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Orcutt, John D., Jr., Harbor Branch Oceanographic Institute
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Date Issued
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1985
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PURL
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http://purl.flvc.org/fau/fd/FA00007329
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Subject Headings
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Zooplankton, Cladocera, Daphnia ambigua, Competition (Biology), Zooplankton--Ecology
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Format
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Document (PDF)
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Title
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Epithallus sloughing: a self-cleaning mechanism for coralline algae.
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Creator
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Littler, Mark M., Littler, Diane S., Harbor Branch Oceanographic Institute
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Date Issued
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1999
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PURL
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http://purl.flvc.org/FCLA/DT/3166881
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Subject Headings
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Coralline algae, Corallinaceae, Delesseriaceae, Algae --Cytology, Coral reef ecology
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Format
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Document (PDF)
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Title
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Unusual linear arrays of the coral reef macrophyte Halimeda incrassata in the Bahamas.
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Creator
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Littler, Mark M., Littler, Diane S., Brooks, Barrett L., Lapointe, Brian E.
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Date Issued
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2007
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PURL
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http://purl.flvc.org/FCLA/DT/2875932
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Subject Headings
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Coral reef ecology, Algae --Congresses, Toxic algae --Congresses, Rhizoids, Halimeda
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Format
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Document (PDF)
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Title
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The many faces of gene expression profiling: transcriptome analyses applied towardselucidating marine organismal interactions and metabolism.
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Creator
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Lopez, Jose V., Mouzon, B., McCarthy, Peter J., Kerr, Russell G.
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Date Issued
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2009
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PURL
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http://purl.flvc.org/fau/fd/FA00007286
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Subject Headings
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Gene expression, Transcriptome, Molecular biotechnology, Marine ecology, Marine organisms
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Format
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Document (PDF)
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Title
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Non-overlapping distributions of spionid polychaetes: the relative importance of habitat and competition.
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Creator
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Wilson, W. Herbert, Jr., Harbor Branch Oceanographic Institute
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Date Issued
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1984
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PURL
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http://purl.flvc.org/FCLA/DT/3331850
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Subject Headings
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Polychaeta, Spionidae, Intraspecific competition, Interspecific competition, Habitat (Ecology)
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Format
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Document (PDF)
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Title
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Productivity and biomass of Thalassia testudinum as related to water column nutrient availability and epiphyte levels: field observations and experimental studies.
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Creator
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Tomasko, D. A., Lapointe, Brian E.
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Date Issued
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1991
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PURL
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http://purl.flvc.org/FCLA/DT/3350863
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Subject Headings
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Seagrasses, Seagrasses --Ecology, Seagrasses --Caribbean Area --Congresses, Seagrasses --Florida, Epiphytes
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Format
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Document (PDF)
Pages