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Title: In vitro culture of the ascidian Ecteinascidia turbinata to supply the antitumor compounds ecteinascidins.
Creator: Duckworth, Alan R., Samples, Gail A., Wright, Amy E., Pomponi, Shirley A.
Date Issued: 2004
PURL: http://purl.flvc.org/FCLA/DT/2827818
Subject Headings: Ascidians, Microalgae --Congresses, Marine ecology, Marine ecosystem management, Antineoplastic agents
Format: Document (PDF)

Title: Effect of external pH on cyanobacterial pigment expression.
Creator: West, Maria., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: Cyanobacteria are classified as alkalophiles despite their preferential uptake of the acidic form of dissolved inorganic carbon. Long term impacts of external pH on the expression of photosynthetic and structural pigments in Schizothrix calcicola were investigated as potential contributing factors to this phenomenon. More robust cell walls in S. calcicola at pH
Show moreCyanobacteria are classified as alkalophiles despite their preferential uptake of the acidic form of dissolved inorganic carbon. Long term impacts of external pH on the expression of photosynthetic and structural pigments in Schizothrix calcicola were investigated as potential contributing factors to this phenomenon. More robust cell walls in S. calcicola at pH <7 are suggested by significantly greater expression of myxoxanthophylls. Direct and indirect physiological costs of altering cell walls may contribute to S. calcicola's depressed growth at acidic pH. Comparison of chlorophylls expression suggests that alkaline rather than neutral external pH is only beneficial for S. calcicola growth in absence of nutrient limitation. While the cyanobacterial biomarker ratio of chlorophylls to echinenone was stable across the pertinent pH range of 6-8, other pigment ratios in S. calcicola were affected by pH with an approximately two week lag between the change of pH and the corresponding change of pigment expression.
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Date Issued: 2010
PURL: http://purl.flvc.org/FAU/2795335
Subject Headings: Environmental toxicology, Cyanobacteria, Environmental aspects, Ecosystem management, Vegetation dynamics
Format: Document (PDF)

Title: The impact of willow encroachment on water and carbon exchange in the vegetation of a subtropical wetland.
Creator: Budny, Michelle L., Benscoter, Brian, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Shortened periods of inundation due to water management have led to the encroachment and expansion of Carolina willow (Salix caroliniana) in sawgrass (Cladium jamaicense) marsh communities. Morphologic and physiologic differences between sawgrass and willow have potential consequences for microhabitat conditions and ecosystem function such as a reduction in temperatures and light availability and changes in primary productivity. Since it is a woody shrub, willow is often assumed to exhibit...
Show moreShortened periods of inundation due to water management have led to the encroachment and expansion of Carolina willow (Salix caroliniana) in sawgrass (Cladium jamaicense) marsh communities. Morphologic and physiologic differences between sawgrass and willow have potential consequences for microhabitat conditions and ecosystem function such as a reduction in temperatures and light availability and changes in primary productivity. Since it is a woody shrub, willow is often assumed to exhibit higher rates of transpiration than non woody plants, which in turn can affect photosynthesis and carbon exchange and ultimately wetland water management. In this study willow was found to have higher rates of stomatal conductance (gs) and photosynthesis (Anet) than sawgrass. However, sawgrass had greater intrinsic water use efficiency (WUE) than willow. This suggests that willow is capable of greater gas exchange and carbon assimilation than sawgrass but requires more water. Understanding the implications of willow expansion will improve landscape models of wetland water and carbon exchange and inform water management decisions.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00004350, http://purl.flvc.org/fau/fd/FA00004350
Subject Headings: Biogeochemistry, Ecosystem management, Surfaces (Technology) -- Measurement, Vegetation dynamics, Wetland ecology
Format: Document (PDF)

Title: The distribution of the non-indigenous invasive Old World climbing fern, Lygodium microphyllum, in southern Florida: The relationship to abiotic and biotic variables.
Creator: Stewart, Joy Elaine., Florida Atlantic University, Volin, John C.
Abstract/Description: Old World Climbing Fern, Lygodium microphyllum is an aggressive nonindigenous plant that is on the verge of becoming a major ecological threat in South Florida. Currently, specific habitat characteristics that contribute to success or failure of its establishment are unknown. I studied the pattern of distribution of the fern in Florida's Big Cypress Swamp. Two similar forested wetland sites with high incidence of L. microphyllum infestation were assessed in order to identify broad-scale...
Show moreOld World Climbing Fern, Lygodium microphyllum is an aggressive nonindigenous plant that is on the verge of becoming a major ecological threat in South Florida. Currently, specific habitat characteristics that contribute to success or failure of its establishment are unknown. I studied the pattern of distribution of the fern in Florida's Big Cypress Swamp. Two similar forested wetland sites with high incidence of L. microphyllum infestation were assessed in order to identify broad-scale hydrological and physiographic conditions that may favor high susceptibility to L. microphyllum invasion. On each site, species richness, abundance and distribution of herbs, shrubs and trees were characterized. In addition, several parameters including elevation, substrate depth, percentage substrate water content, percentage substrate organic content, substrate texture, and photosynthetically active radiation were quantified. The patterns of distribution of L. microphyfum indicated that presence of the fern was dependent on relatively low elevation, relatively deep substrate and moderately high substrate water content.
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Date Issued: 2002
PURL: http://purl.flvc.org/fcla/dt/12890
Subject Headings: Ferns--Florida, Lygodium, Ecosystem management, Invasive plants--Florida
Format: Document (PDF)

Title: Trophic Ecology of the Slender Snipe Eel, Nemichthys scolopaceus (Anguilliformes: Nemichthyidae).
Creator: Feagans, Jennifer N., Sutton, Tracey T., Florida Atlantic University
Abstract/Description: Roughly 92% of the total volume of Earth's oceans is considered deep sea. The eel species, Nemichthys scolopaceus, inhabits these waters, and little is known of its diet, its place within pelagic food webs, and its overall ecological impact. In this study we quantitatively estimate the abundance, feeding and predation impact of this key predator. Specimens were collected in 2004 along Georges Bank as part of the Census of Marine Life Gulf of Maine project. Gut contents were analyzed,...
Show moreRoughly 92% of the total volume of Earth's oceans is considered deep sea. The eel species, Nemichthys scolopaceus, inhabits these waters, and little is known of its diet, its place within pelagic food webs, and its overall ecological impact. In this study we quantitatively estimate the abundance, feeding and predation impact of this key predator. Specimens were collected in 2004 along Georges Bank as part of the Census of Marine Life Gulf of Maine project. Gut contents were analyzed, revealing thirteen prey types, primarily euphausiids and decapod crustaceans. Other potential prey (i.e. fishes) were absent from the diet, suggesting a fairly selective feeding preference. Of the 85 fish species collected, N scolopaceus ranked second in abundance and first in total fish biomass. Therefore, this species is not only a large biomass contributor, but perhaps cycles a great deal of macrocrustacean carbon through deep-pelagic fishes in this, and likely other, ecosystems.
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Date Issued: 2008
PURL: http://purl.flvc.org/fau/fd/FA00000760
Subject Headings: Predatory marine animals--Ecology, Marine ecosystem management, Aquatic ecology
Format: Document (PDF)

Title: Development of a remote sensing technique for woody vegetation in Rotenberger Wildlife Management Area.
Creator: Franklin, Sarah., Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: The Florida Fish and Wildlife Conservation Commission lacks a viable method for monitoring woody vegetation in expansive wetland communities, such as the Florida Everglades. This study used aerial photographs of Rotenberger Wildlife Management Area in southeastern Palm Beach County, Florida to develop techniques for remotely monitoring changes in woody vegetation. Imagery from 2006, 2008, and 2010 were classified into woody and non-woody categories using Adobe Photoshop's Magic Wand Tool....
Show moreThe Florida Fish and Wildlife Conservation Commission lacks a viable method for monitoring woody vegetation in expansive wetland communities, such as the Florida Everglades. This study used aerial photographs of Rotenberger Wildlife Management Area in southeastern Palm Beach County, Florida to develop techniques for remotely monitoring changes in woody vegetation. Imagery from 2006, 2008, and 2010 were classified into woody and non-woody categories using Adobe Photoshop's Magic Wand Tool. Selection was performed with a bias toward over classification, as project objectives required identifying as many trees as possible. Classified pixels in Time 1 within 4 feet (2 pixels) of classified pixels from Time 2 were considered the same canopy. Overall accuracy for the study was 98%.
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Date Issued: 2011
PURL: http://purl.flvc.org/FAU/3175018
Subject Headings: Environmental monitoring, Remote sensing, Vegetation dynamics, Ecosystem management
Format: Document (PDF)

Title: Hydrologic and topographic gradient effects on woody vegetation of tree islands in the Everglades Wildlife Management Area.
Creator: Anderson, Michael Robert., Florida Atlantic University, Volin, John C.
Abstract/Description: Water management in the Everglades has been a challenge for managing agencies for quite some time. Presently, restoration efforts are underway to reestablish natural hydrological patterns such as flow, depth, and hydroperiod. Tree island health is of particular concern because of its importance to the functional integrity of the greater Everglades ecosystem. This study was designed to determine the effects of different hydrological patterns and elevations on native woody vegetation on tree...
Show moreWater management in the Everglades has been a challenge for managing agencies for quite some time. Presently, restoration efforts are underway to reestablish natural hydrological patterns such as flow, depth, and hydroperiod. Tree island health is of particular concern because of its importance to the functional integrity of the greater Everglades ecosystem. This study was designed to determine the effects of different hydrological patterns and elevations on native woody vegetation on tree islands. The study site was the Everglades Wildlife Management Area (EWMA) in the north central Everglades. The study site was broken up into two hydrological zones: dry zone and moderately wet zone. It was found that both hydrology and relative elevation were important predictors of woody species diversity and density. Average hydroperiod and ponding depth were the best sole predictors explaining up to 50% of the woody vegetation variability found within the tail and fringe community as well as the whole tree island.
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Date Issued: 2000
PURL: http://purl.flvc.org/fcla/dt/12709
Subject Headings: Ecosystem management--Florida--Everglades, Woody plants--Florida--Everglades, Everglades Wildlife Management Area (Fla )
Format: Document (PDF)

Title: The combined effects of low salinity and Dermo on oysters from the St. Lucie Estuary.
Creator: Baird, Krystal D., Florida Atlantic University, Roesijadi, Guritno
Abstract/Description: The viability of the eastern oyster, Crassostrea virginica, is designated as an ecological performance measure for the management of freshwater inflows to the St. Lucie Estuary, Florida. Thus, oysters derived from the St. Lucie Estuary were tested for their physiological response to stress, measured as altered condition index and RNA/DNA ratios, resulting from changes in salinity and infection by the protozoan parasite Perkinsus marinus, the agent of Dermo, a common oyster disease. Pilot...
Show moreThe viability of the eastern oyster, Crassostrea virginica, is designated as an ecological performance measure for the management of freshwater inflows to the St. Lucie Estuary, Florida. Thus, oysters derived from the St. Lucie Estuary were tested for their physiological response to stress, measured as altered condition index and RNA/DNA ratios, resulting from changes in salinity and infection by the protozoan parasite Perkinsus marinus, the agent of Dermo, a common oyster disease. Pilot studies consisted of the development of a real-time PCR-based assay for P. marinus infection, procedures to infect oysters with the pathogen by injection method and procedures for the measurement of RNA/DNA ratios. The general experimental design was to assess the response of non-injected and injected C. virginica to low salinity challenges. Two scenarios for salinity stress were tested: one in which oysters were subjected to a single reduction in salinity and one in which an initial reduction in salinity was followed by a recovery phase and then subjected to a second challenge of reduced salinity. Condition index was more responsive to changes in salinity regimes than to P. marinus infection. Changes in the RNA/DNA ratio were responsive to the infection status, but not changes in salinity; the pattern of change in the RNA/DNA ratio generally followed changes in the measured levels of infection. The lack of mortalities showed that these oysters were able to tolerate short periods of reduced salinity.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13335
Subject Headings: Freshwater ecology, Ecosystem management, Water quality management, American oyster--Florida, Saint Lucie River Estuary (Fla ), Salinity--Physiological effect
Format: Document (PDF)

Title: Conservation and Phylogeny of a Novel Family of Non‐Hox Genes of the Antp Class in Demospongiae (Porifera).
Creator: Richelle-Maurer, Evelyn, Boury-Esnault, Nicole, Itskovich, Valeria B., Manuel, Michael, Pomponi, Shirley A., Van de Vyver, Gisele, Borchiellini, Carole
Date Issued: 2006
PURL: http://purl.flvc.org/FCLA/DT/2796095
Subject Headings: Demospongiae, Homeobox genes, Marine ecosystem management, Phylogeny, Sponges --Bahamas, Sponges --Florida
Format: Document (PDF)

Title: A New Sterol Sulfate, Sch 572423, from a Marine Sponge, Topsentia sp.
Creator: Yang, Shu-Wei, Buevich, Alexei, Chan, Tze-Ming, Smith, Michelle, Lachowicz, Jean, Pomponi, Shirley A., Wright, Amy E., Mierzwa, Ronald, Patel, Mahesh, Gullo, Vincent, Chu, Min
Date Issued: 2003
PURL: http://purl.flvc.org/FCLA/DT/2827816
Subject Headings: Water quality bioassay, Water --Pollution --Toxicology, Sponges, Marine ecosystem management, Filters and filtration
Format: Document (PDF)

Title: A review of the colonization dynamics of the northern curly-tailed lizard (Leiocephalus Carinatus Armouri) in Florida.
Creator: Smith, Henry T., Engeman, Richard M.
Date Issued: 2004-09
PURL: http://purl.flvc.org/fcla/dt/11527
Subject Headings: Lizards--Florida, Lizards--Reproduction, Reptiles--Florida, Ecosystem management--Florida, Curlytail lizards
Format: Document (PDF)

Title: Consumptive effects of predatory fish reduce wetland crayfish (Procambarus spp.) recruitment and drive species turnover.
Creator: Kellogg, Christopher M., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Trade-offs in traits conferring success in permanent and ephemeral habitats are often at odds with few species being able to persist in both types of environments. I examined the effect of sunfish predators on two species of south Florida crayfish to establish the mechanism that limits one species, Procambarus alleni, to short-hydroperiod environments. The crayfish assemblage response to a gradient of sunfish predators and the effect of predation on P. fallax alone was examined. I also...
Show moreTrade-offs in traits conferring success in permanent and ephemeral habitats are often at odds with few species being able to persist in both types of environments. I examined the effect of sunfish predators on two species of south Florida crayfish to establish the mechanism that limits one species, Procambarus alleni, to short-hydroperiod environments. The crayfish assemblage response to a gradient of sunfish predators and the effect of predation on P. fallax alone was examined. I also examined the effects of sunfish on crayfish growth and quantified activity levels and risky behaviors of both crayfish species. P. alleni dominated at low sunfish densities but dominance shifted with increasing sunfish density. P. alleni was more active and likely to initiate risky behaviors, suggesting that sunfish predators remove the more active P. alleni, reducing their numbers disproportionally to those of P. fallax and allowing P. fallax to dominate crayfish assemblages in long-hydroperiod wetlands.
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Date Issued: 2011
PURL: http://purl.flvc.org/FAU/3171400
Subject Headings: Wetland ecology, Habitat selection, Marine ecosystem management, Predatory marine animals, Ecology
Format: Document (PDF)

Title: Deep-Water Biogenic Sediment off the Coast of Florida.
Creator: Zuccarelli, Claudio L., Oleinik, Anton E., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: Biogenic “oozes” are pelagic sediments that are composed of > 30% carbonate microfossils and are estimated to cover about 50% of the ocean floor, which accounts for about 67% of calcium carbonate in oceanic surface sediments worldwide. These deposits exhibit diverse assemblages of planktonic microfossils and contribute significantly to the overall sediment supply and function of Florida’s deep-water regions. However, the composition and distribution of biogenic sediment deposits along these...
Show moreBiogenic “oozes” are pelagic sediments that are composed of > 30% carbonate microfossils and are estimated to cover about 50% of the ocean floor, which accounts for about 67% of calcium carbonate in oceanic surface sediments worldwide. These deposits exhibit diverse assemblages of planktonic microfossils and contribute significantly to the overall sediment supply and function of Florida’s deep-water regions. However, the composition and distribution of biogenic sediment deposits along these regions remains poorly documented. Seafloor surface sediments have been collected in situ via Johnson- Sea-Link I submersible along four of Florida’s deep-water regions during a joint research cruise between Harbor Branch Oceanographic Institute (HBOI) and Florida Atlantic University (FAU). Sedimentological analyses of the taxonomy, species diversity, and sedimentation dynamics reveal a complex interconnected development system of Florida’s deep-water habitats. Results disclose characteristic microfossil assemblages of planktonic foraminiferal ooze off the South West Florida Shelf, a foraminiferal-pteropod ooze through the Straits of Florida, and pteropod ooze deposits off Florida’s east coast. The distribution of the biogenic ooze deposits is attributed to factors such as oceanographic surface production, surface and bottom currents, off-bank transport, and deep-water sediment drifts. The application of micropaleontology, sedimentology, and oceanography facilitate in characterizing the sediment supply to Florida’s deep-water regions.
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Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00004857
Subject Headings: Marine sediments., Sediment transport., Deep-sea ecology., Ecosystem management., Micropaleontology
Format: Document (PDF)

Title: Diet variation and the consumptive effects of native centrarchids on benthic macroinvertebrates in wetlands.
Creator: Bransky, Jacob., Charles E. Schmidt College of Science, Center for Environmental Studies
Abstract/Description: Fish predation can have structuring effects in aquatic communities, but the most important fish predators are not always immediately obvious. Generalist fish predators often occupy similar habitats and consume similar prey making determination of their consumptive impacts difficult. Understanding these consumptive impacts is important for understanding complex wetland food webs. I collected warmouth (Lepomis gulosus), bluespotted sunfish (Enneacanthus gloriosus), and dollar sunfish (Lepomis...
Show moreFish predation can have structuring effects in aquatic communities, but the most important fish predators are not always immediately obvious. Generalist fish predators often occupy similar habitats and consume similar prey making determination of their consumptive impacts difficult. Understanding these consumptive impacts is important for understanding complex wetland food webs. I collected warmouth (Lepomis gulosus), bluespotted sunfish (Enneacanthus gloriosus), and dollar sunfish (Lepomis marginatus) in two seasons from sloughs for both diet and bioenergetics analysis. Macroinvertebrates dominated diets of the three species, and nonparametric analyses revealed evidence of diet ontogeny in warmouth and potential competition for prey items among gape-matched individuals. Bioenergetics modeling revealed high levels of macroinvertebrate comsumption by these species relative to macroinvertebrate reproductive output suggesting that when combined with other sources of mortality, consumptive pressures placed by sunfish on benthic macroinvertebrates may be quite large.
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Date Issued: 2012
PURL: http://purl.flvc.org/FAU/3356894
Subject Headings: Wetland ecology, Predatory marine animals, Ecology, Predation (Biology), Habitat selction, Marine ecosystem management
Format: Document (PDF)

Title: Establishing Spatiotemporal Linkages Between Hydrological and Soil Physical Characteristics and Vegetation on an Ecological Preserve: Boca Raton, FL.
Creator: Leung, Tania, Root, Tara L., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
Abstract/Description: In recent decades, ecohydrology has received renewed attention because of the impacts of groundwater withdrawal on ecosystems. Growing population and urban expansion in Palm Beach County, FL. place pressure to eradicate natural areas, such as Florida scrub habitats, and increase groundwater withdrawal. This study presents preliminary results of soil and hydrological characterization of an ecological preserve surrounded by changing land use. Soil moisture and water levels were monitored to...
Show moreIn recent decades, ecohydrology has received renewed attention because of the impacts of groundwater withdrawal on ecosystems. Growing population and urban expansion in Palm Beach County, FL. place pressure to eradicate natural areas, such as Florida scrub habitats, and increase groundwater withdrawal. This study presents preliminary results of soil and hydrological characterization of an ecological preserve surrounded by changing land use. Soil moisture and water levels were monitored to assess the effects of precipitation as influenced by plants and soil analysis determined the suitability of current soil conditions for hosting native vegetation habitats. Hydrologic and soil conditions on the preserve fall within values expected for native Florida scrub habitats. Hydrologic response to precipitation varied due to factors including antecedent conditions and vegetation types. These results provide a better understanding of the interactions between soil proper ties, hydrologic cycle, and plants, and assist with establishing a baseline to monitor changes over time.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00004516
Subject Headings: Ecosystem management, Environmental geography -- Florida -- Boca Raton, Hydrodynamics, Wetland conservation -- Florida -- Boca Raton
Format: Document (PDF)

Title: Ecosystem health and environmental influences on innate immune function in the loggerhead (Caretta caretta) and green (Chelonia mydas) sea turtle.
Creator: Sposato, Patricia L., Milton, Sarah L., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Loggerhead (Caretta caretta) and green (Chelonia mydas) turtles recruit to nearshore environments as juveniles. These often degraded habitats are associated with emerging diseases such as green turtle fibropapillomatosis (GTFP), however there are few studies on immune function in sea turtles. The objective of this research was to quantify phagocytosis of the innate immune system by flow cytometry and compare levels between animals from a degraded habitat (the Indian River Lagoon, FL) to a...
Show moreLoggerhead (Caretta caretta) and green (Chelonia mydas) turtles recruit to nearshore environments as juveniles. These often degraded habitats are associated with emerging diseases such as green turtle fibropapillomatosis (GTFP), however there are few studies on immune function in sea turtles. The objective of this research was to quantify phagocytosis of the innate immune system by flow cytometry and compare levels between animals from a degraded habitat (the Indian River Lagoon, FL) to a more pristine environment (the Trident Basin, Port Canaveral, FL), and across a range of temperatures. While in vitro temperatures did not alter rates of phagocytosis, it was higher in samples obtained in the summer than winter. Rates of phagocytosis in sea turtles with GTFP and from degraded environments with increased prevalence of GTFP were low compared to animals from the more pristine environment, suggesting that the environment can alter innate immunological function and thus contribute to the development of disease.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004333, http://purl.flvc.org/fau/fd/FA00004333
Subject Headings: Developmental biology, Ecosystem management -- Florida, Loggerhead turtle -- Habitat -- Environmental aspects, Marine biodiversity conservation, Sea turtles -- Immunology
Format: Document (PDF)

Title: Phosphate-associated phenotype plasticity as a driver of cattail invasion in the sawgass-dominated Everglades.
Creator: Webb, James., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: In plants, phenotypic plasticity, the ability to morphologically adapt to new or broad environmental conditions, is a consequence of long-term evolutionary genetic processes. Thus, plants adapted to low phosphate (P) environments exhibit only limited plasticity to take advantage of nutrient enrichment, a global phenomenon in terrestrial and aquatic environments. In the face of anthropogenic P-enrichment, low nutrient adapted resident plant species are frequently displaced by species with high...
Show moreIn plants, phenotypic plasticity, the ability to morphologically adapt to new or broad environmental conditions, is a consequence of long-term evolutionary genetic processes. Thus, plants adapted to low phosphate (P) environments exhibit only limited plasticity to take advantage of nutrient enrichment, a global phenomenon in terrestrial and aquatic environments. In the face of anthropogenic P-enrichment, low nutrient adapted resident plant species are frequently displaced by species with high morphological and genetic plasticity. However, it remains unclear whether plasticity is systemically expressed across molecular, biochemical, physiological, and morphological processes that ultimately contribute to the root and shoot phenotypes of plants. In this study, we demonstrated high plasticity in root-borne traits of sawgrass (Cladium jamaicense), the dominant plant species of the P-impoverished Everglades, and counter the idea of inflexibility in low P adapted species. However, sawgras s expressed inflexibility in processes contributing to shoot phenotypes, in contrast to cattail, which was highly plastic in shoot characteristics vii in response to P enrichment. In fact, plasticity in cattail shoots is likely a function of its growth response to P that was globally regulated by P-availability at the level of transcription. Plasticity and inflexibility in the growth of both species also diverged in their allocation of P to the chloroplast for growth in cattail versus the vacuole for P storage in sawgrass. In the Everglades, anthropogenic P-enrichment has changed the environment from a P-limited condition, where plasticity in root-borne traits of sawgrass was advantageous, to one of light-competition, where plasticity in shoot-borne traits drives competitive dominance by cattail., We hypothesize that these shifts in plasticity competitive advantage from root to shoots has been a major driver of cattail expansion in the Everglades ecosystem. Further, this understanding of how natural plant species adapt and shift in response to nutrient availability could also be used a model system to optimize agricultural systems to increase efficiencies in food production and protect low nutrient adapted natural systems from cultural eutrophication.
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Date Issued: 2010, 2010
PURL: http://purl.flvc.org/FAU/2979377
Subject Headings: Ecosystem management, Vegatation dynamics, Phosphorous, Physiological transport, Biogeochemical cycles
Format: Document (PDF)

Title: The cascading impacts of vegetation on peat soil properties and crayfish survival in the Florida everglades.
Creator: Chapman, Alexander, Benscoter, Brian, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Changes in vegetation may influence the quality and quantity of the underlying organic peat soils and have impacts on faunal populations. My goal was to determine whether shifts from native slough communities to invasive cattail in the Florida Everglades could affect peat characteristics that could cascade to impact the dry season survival of crayfish (Procambarus fallax). I contrasted peat soils from native slough and cattail-invaded sites as alternative dry-season burrowing substrates for...
Show moreChanges in vegetation may influence the quality and quantity of the underlying organic peat soils and have impacts on faunal populations. My goal was to determine whether shifts from native slough communities to invasive cattail in the Florida Everglades could affect peat characteristics that could cascade to impact the dry season survival of crayfish (Procambarus fallax). I contrasted peat soils from native slough and cattail-invaded sites as alternative dry-season burrowing substrates for crayfish. Cattail peat had higher average bulk density and inorganic content within the first ten centimeters of the soil profile. Crayfish showed marginally greater initial burrowing success in slough peat than in cattail peat but survival was equivalent in both peat soils and high overall. Understanding these indirect linkages between vegetation and crayfish populations in the Everglades can provide insight on the consequences of plant invasion on ecosystem trophic dynamics.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004091, http://purl.flvc.org/fau/fd/FA00004091
Subject Headings: Crayfish (Ecology), Ecosystem management, Everglades National Park (Fla.), Vegetation dynamics -- Florida -- Everglades National Park
Format: Document (PDF)

Title: Studies of specific gene expression of phosphate transporters in sawgrass (Cladium jamaicense crantz) and cattail (Typha domingensis pers.).
Creator: Lin, Li, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: In the Florida Everglades, sawgrass has been displaced by cattail, predominantly resulting from phosphate enrichment. It has been found that phosphate transporters and arbuscular mycorrhizal (AM) fungi play an important role in phosphate uptake in the plants. This study aimed to reveal the symbiosis between AM fungi and sawgrass and cattail and identify the phosphate transporters, especially AM-specific phosphate transporters in these two species. AM colonization was only found in sawgrass...
Show moreIn the Florida Everglades, sawgrass has been displaced by cattail, predominantly resulting from phosphate enrichment. It has been found that phosphate transporters and arbuscular mycorrhizal (AM) fungi play an important role in phosphate uptake in the plants. This study aimed to reveal the symbiosis between AM fungi and sawgrass and cattail and identify the phosphate transporters, especially AM-specific phosphate transporters in these two species. AM colonization was only found in sawgrass roots, not cattail, at low phosphate concentrations in lab and field samples by trypan blue staining. AM fungi could increase sawgrass growth and had little effect on cattail growth. Four phosphate transporters were identified in sawgrass. CjPT1, CjPT2 and CjPT3 were expressed in roots and shoots independent of AM fungi and phosphate availability, while CjPT4 appeared to be an AM regulated phosphate transporter gene and its expression was induced by AM fungi.
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Date Issued: 2010
PURL: http://purl.flvc.org/FAU/1930493
Subject Headings: Phosphorus, Physiological transport, Soil stabilization, Vegetation dynamics, Ecosystem management, Soil mineralogy, Plant physiology
Format: Document (PDF)

Title: Patterns of inorganic phosphate and carbohydrate allocation in sawgrass (Cladium jamaicense Crantz) and southern cattail (Typha domingensis Pers.) grown at low and high phosphate levels.
Creator: Hill, Brian, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: In recent history, C. jamaicense has been displaced by another native monocot, T. domingensis, predominantly resulting from increased phosphorous enrichment in the Everglades. This study aimed to elucidate these two species responses to low and high [Pi] in terms of allocation, photosynthate partitioning and growth. C. jamaicense growth was independent of Pi, while T. domingensis growth increased with [Pi]. Under high [Pi], allocation to younger T. domingensis shoots occurred, while C....
Show moreIn recent history, C. jamaicense has been displaced by another native monocot, T. domingensis, predominantly resulting from increased phosphorous enrichment in the Everglades. This study aimed to elucidate these two species responses to low and high [Pi] in terms of allocation, photosynthate partitioning and growth. C. jamaicense growth was independent of Pi, while T. domingensis growth increased with [Pi]. Under high [Pi], allocation to younger T. domingensis shoots occurred, while C. jamaicense shoots retained more [Pi], while low [Pi] resulted in homogeneous allocation patterns for both species. Additionally, Pi deficiencies induced carbohydrate levels in older shoots of T. domingensis, while [Pi] had no effect on photosynthate partitioning patterns in C. jamaicense. ACP activity was induced by Pi deficiency in all T. domingensis shoots and increased with shoot age, while no effect was observed in C. jamaicense. Results indicate these two species differ in allocation strategies when [Pi] is altered.
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Date Issued: 2009
PURL: http://purl.flvc.org/FAU/238480
Subject Headings: Nitrogen-fixing algae, Biogeochemical cycles, Phosphorus, Psychological transport, Soil stabilization, Ecosystem management, Vegetation dynamics
Format: Document (PDF)

FAU Theses and Dissertations (39)	+ -
FAU College Collections (3)	+ -
HBOI Faculty Contributions (3)	+ -

Ecosystem management (15)	+ -
Marine ecosystem management (10)	+ -
Ecosystem management--Florida (6)	+ -
Vegetation dynamics (6)	+ -
Ecology (5)	+ -

Wetland ecology (4)	+ -
Predation (Biology) (3)	+ -
Predatory marine animals (3)	+ -
Aquatic ecology (2)	+ -
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Ecosystem management--Florida--Everglades (2)	+ -
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Everglades National Park (Fla.)--Environmental conditions. (2)	+ -
Habitat (2)	+ -
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Phosphorus (2)	+ -
Physiological transport (2)	+ -
Remote sensing (2)	+ -
Soil stabilization (2)	+ -
American oyster (1)	+ -
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Animal ecology (1)	+ -
Antineoplastic agents (1)	+ -
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Behavior (1)	+ -
Big Cypress Swamp (Fla )--Environmental aspects (1)	+ -
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Florida (9)	+ -
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Arthur R. Marshall Loxahatchee National Wildlife Refuge (Fla.) (1)	+ -
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Rotenberger Wildlife Management Area (Fla.) (1)	+ -
St. Lucie River Estuary (1)	+ -
St. Lucie River Estuary (Fla.) (1)	+ -

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