Current Search: Ecosystem management--Florida (x)
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- 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
- 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.
Show less - 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
- 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.
Show less - 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
- Mangrove Morphological Change Across an Environmental Gradients: Implications for Competitive Ability in a Changing Climate.
- Creator
- Standish, Hilary, Proffitt, C. Edward, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
In Florida, mangroves have responded to climate change by slowly migrating northward into traditional salt marsh habitat. However, little is understood about the relationships among mangrove growth form plasticity and environmental conditions. In addition, the effects of the mangrove northward expansion on pre-existing salt marsh communities are unknown, especially any influences of differences in tree morphology. The size, canopy structure, and root structure of the three mangrove species...
Show moreIn Florida, mangroves have responded to climate change by slowly migrating northward into traditional salt marsh habitat. However, little is understood about the relationships among mangrove growth form plasticity and environmental conditions. In addition, the effects of the mangrove northward expansion on pre-existing salt marsh communities are unknown, especially any influences of differences in tree morphology. The size, canopy structure, and root structure of the three mangrove species Rhizophora mangle, Avicennia germinans, and Laguncularia racemosa were measured at six sites along the east coast of Florida. Structural equation modeling was used to evaluate the multivariate relationships between environmental and biotic variables. Mangrove growth form varied widely with environmental variables. The results of this study suggest that R. mangle expansion into salt marsh may rely on interactions with salt marsh and shading as well as on climatic variables, which has implications for future mangrove expansion northward in Florida.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004759, http://purl.flvc.org/fau/fd/FA00004759
- Subject Headings
- Mangrove forests--Florida., Mangrove management., Mangrove ecology., Mangrove conservation., Marine ecosystem management--Florida., Coastal zone management--Florida., Forest ecology., Climatic changes--Florida.
- Format
- Document (PDF)
- Title
- Can rewatering reverse the effects of regional drainage on forest communities of the Big Cypress Swamp?.
- Creator
- Park, Scott Michael T., Florida Atlantic University, Volin, John C.
- Abstract/Description
-
The impact of five years of rewatering on a desiccated forested wetland within the Everglades Big Cypress Swamp was investigated. It was found that rewatering generally resulted in a shift in species composition along a hydrological gradient. This was particularly evident in the seedling and herbaceous layer of the cypress domes, the most hydric community studied, where obligate and facultative wetland species had their highest species richness. Overall there were no detectable differences in...
Show moreThe impact of five years of rewatering on a desiccated forested wetland within the Everglades Big Cypress Swamp was investigated. It was found that rewatering generally resulted in a shift in species composition along a hydrological gradient. This was particularly evident in the seedling and herbaceous layer of the cypress domes, the most hydric community studied, where obligate and facultative wetland species had their highest species richness. Overall there were no detectable differences in the number of non-indigenous species in rewatered compared to reference sites. Results from this short-term study showed that rewatering may potentially reverse the trend of increasing coverage by non-obligate wetland plants that have established in the past century as a result of regional desiccation.
Show less - Date Issued
- 2002
- PURL
- http://purl.flvc.org/fcla/dt/12887
- Subject Headings
- Forested wetlands--Florida--Big Cypress Swamp, Hydrology--Florida--Big Cypress Swamp, Ecosystem management--Florida--Big Cypress Swamp
- Format
- Document (PDF)
- Title
- The effects of systemic herbicide used for invasive species management on a native Florida scrub seed bank.
- Creator
- Ryan, Kathleen S., Florida Atlantic University, Violin, John
- Abstract/Description
-
This study focused on whether use of ArsenalRTM to control an invasive, non-indigenous tree, Schinus terebinthifolius, would either negatively affect the seed bank in treatment areas of the study site or seeds in litter, 0-5 cm or 5-15 cm layers of the bank. Neither examining the whole site nor the two habitats produced conclusive results, but examining the three layers did. The litter layer appeared to be most sensitive to herbicide treatment with a 47% (p=0.03) reduction in seedling...
Show moreThis study focused on whether use of ArsenalRTM to control an invasive, non-indigenous tree, Schinus terebinthifolius, would either negatively affect the seed bank in treatment areas of the study site or seeds in litter, 0-5 cm or 5-15 cm layers of the bank. Neither examining the whole site nor the two habitats produced conclusive results, but examining the three layers did. The litter layer appeared to be most sensitive to herbicide treatment with a 47% (p=0.03) reduction in seedling emergence after treatment. Analysis of herbicide effect therefore required studying depth, habitat and study site. The litter layer, seldom considered in seed bank studies, produced 33% of emerging seedlings in this study. It is an extremely important component as it is the first place seeds are deposited before they percolate down into the soil. Damage to this layer will not only affect current seedling emergence, but future content of the seed bank below the surface.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/13301
- Subject Headings
- Soil seed banks--Florida, Soil absorption and adsorption--Florida, Soil remediation--Florida, Ecosystem management--Florida
- Format
- Document (PDF)
- Title
- Generating space-time hypotheses in complex social-ecological systems.
- Creator
- Forbes, Dolores J., Xie, Zhixiao, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
As ecosystems degrade globally, ecosystem services that support life are increasingly threatened. Indications of degradation are occurring in the Northern Indian River Lagoon (IRL) estuary in east central Florida. Factors associated with ecosystem degradation are complex, including climate and land use change. Ecosystem research needs identified by the Millennium Ecosystem Assessment (MA) include the need to: consider the social with the physical; account for dynamism and change; account for...
Show moreAs ecosystems degrade globally, ecosystem services that support life are increasingly threatened. Indications of degradation are occurring in the Northern Indian River Lagoon (IRL) estuary in east central Florida. Factors associated with ecosystem degradation are complex, including climate and land use change. Ecosystem research needs identified by the Millennium Ecosystem Assessment (MA) include the need to: consider the social with the physical; account for dynamism and change; account for complexity; address issues of scale; and focus on ecosystem structure and process. Ecosystems are complex, self-organizing, multi-equilibrial, non-linear, middle-number systems that exist in multiple stable states. Results found are relative to the observation and the frame of analysis, requiring multi-scaled analytical techniques. This study addresses the identified ecosystem research needs and the complexity of the associated factors given these additional constraints. Relativity is addressed through univariate analysis of dissolved oxygen as a measure of the general health of the Northern IRL. Multiple spatial levels are employed to associate social process scales with physical process scales as basin, sub-basins, and watersheds. Scan statistics return extreme value clusters in space-time. Wavelet transforms decompose time-scales of cyclical data using varying window sizes to locate change in process scales in space over time. Wavelet transform comparative methods cluster temporal process scales across space. Combined these methods describe the space-time structure of process scales in a complex ecosystem relative to the variable examined, where the highly localized results allow for connection to unexamined variables.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00004284
- Subject Headings
- Environmental sciences -- Mathematical models, Indian River (Fla. : Lagoon) -- Environmental aspects, Marine ecosystem management -- Florida -- Indian River (Lagoon), Sustainable development, Wavelets (Mathematics)
- Format
- Document (PDF)
- Title
- Resource use, competition, grazing behavior, and ecosystem invasion impacts of Pomacea maculata.
- Creator
- Monette, Dean J., Markwith, Scott, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
Invasion of exotic species is a global threat to native species, biological diversity, and ecological restoration projects. Pomacea maculata is a macrophyte herbivore often misidentified with one of the world’s most invasive and destructive exotic snail, Pomacea canaliculata, but has a broader geographical distribution and climate tolerance, and greater egg production. This research examines whether the exotic P. maculata and native Pomacea paludosa occupy identical vegetation communities,...
Show moreInvasion of exotic species is a global threat to native species, biological diversity, and ecological restoration projects. Pomacea maculata is a macrophyte herbivore often misidentified with one of the world’s most invasive and destructive exotic snail, Pomacea canaliculata, but has a broader geographical distribution and climate tolerance, and greater egg production. This research examines whether the exotic P. maculata and native Pomacea paludosa occupy identical vegetation communities, mechanisms of interference competition, grazing impact differences on Vallisneria americana and to develop an exploratory agent based model. This model uses historical and present data to project how differences between species in life history and grazing patterns can potentially impact South Florida ecosystems. This model examined how P. maculate invasion of South Florida could affect two of the Central Everglades Planning Project’s main environmental restoration goals: function of key vegetative communities and conservation of endangered or threatened species.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00004309, http://purl.flvc.org/fau/fd/FA00004309
- Subject Headings
- Competition (Biology), Ecosystem management -- Florida, Florida applesnail -- Ecology, Florida applesnail -- Environmental aspects, Florida applesnail -- Habitat, Pomacea maculata -- Florida, Wildlife conservation -- Florida
- Format
- Document (PDF)
- Title
- Body Condition of Juvenile Hoplosternum littorale (Hancock, 1828) in Anthropogenic Refuges on the Big Cypress Seminole Indian Reservation during the 2006 Dry Season.
- Creator
- Ramdin, Gianna, Baldwin, John D., Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
- Abstract/Description
-
This study investigated variations m body condition of brown hoplos (Hoplosternum littorale) refuging in ponds in the Big Cypress region of southern Florida. During the dry season environmental parameters fluctuated, water depth and dissolved oxygen decreased, while temperature and conductivity increased. Standard lengths and wet weights of 675 juvenile brown hoplos were measured from seven populations. Body condition was compared between populations and through time (early vs. late dry...
Show moreThis study investigated variations m body condition of brown hoplos (Hoplosternum littorale) refuging in ponds in the Big Cypress region of southern Florida. During the dry season environmental parameters fluctuated, water depth and dissolved oxygen decreased, while temperature and conductivity increased. Standard lengths and wet weights of 675 juvenile brown hoplos were measured from seven populations. Body condition was compared between populations and through time (early vs. late dry season) using length-weight relationship and Fulton's condition factor. The only significant spatia-temporal variations in body condition occurred in the deepest refuges. One population demonstrated an unexpected positive change in body condition, while another (a deep culvert pond) showed negative changes in body condition over time. Smaller fish (≤S65mmSL) found in these deep-water refuges demonstrated the most change in body condition. Almost all populations exhibited isometric growth but the culvert pond population had variable regression slopes (slopes ≠ 3 for both samples).
Show less - Date Issued
- 2007
- PURL
- http://purl.flvc.org/fau/fd/FA00000817
- Subject Headings
- Seminole Tribe of Florida, Big Cypress Swamp (Fla )--Environmental aspects, Wetland ecology--Florida--Big Cypress Swamp (Fla ), Ecosystem management--Florida--Big Cypress Swamp (Fla)
- Format
- Document (PDF)
- Title
- Determining vegetative complexity, biodiversity and species richness on tree islands of the northern Everglades.
- Creator
- Day, Irving M., IV., Florida Atlantic University, Gallagher, Jacqueline
- Abstract/Description
-
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.
Show less - Date Issued
- 2006
- PURL
- http://purl.flvc.org/fcla/dt/13332
- Subject Headings
- Swamp ecology--Florida--Everglades, Tree islands--Florida--Everglades, Ecosystem management--Florida--Everglades, Tree island ecology--Florida--Everglades, Plant ecology--Florida--Everglades
- Format
- Document (PDF)
- Title
- The effect of hydroperiod on the growth of the crayfish species Procambarus alleni and Procambarus fallax: Two keystone species in the Florida Everglades.
- Creator
- Gardner, Matthew D., Florida Atlantic University, Volin, John C.
- Abstract/Description
-
The Everglades ecosystem is home to two species of freshwater crayfish: the Everglades crayfish Procambarus alleni and the slough crayfish Procambarus fallax. These species play a key ecological role by transporting energy from primary producers to higher trophic levels. Understanding the factors that regulate crayfish growth is an essential step in restoring their productivity in the Everglades ecosystem. In order to determine the effect of hydroperiod on crayfish growth, I collected...
Show moreThe Everglades ecosystem is home to two species of freshwater crayfish: the Everglades crayfish Procambarus alleni and the slough crayfish Procambarus fallax. These species play a key ecological role by transporting energy from primary producers to higher trophic levels. Understanding the factors that regulate crayfish growth is an essential step in restoring their productivity in the Everglades ecosystem. In order to determine the effect of hydroperiod on crayfish growth, I collected crayfish from the Florida Everglades and subjected them to one of three hydroperiod treatments. The growth of both crayfish species in reduced hydroperiod treatments was significantly less than those in long hydroperiod treatments. Procambarus alleni had a significantly faster initial growth rate than P. fallax, which may give it a competitive advantage in shorter hydroperiod marshes and help explain the distributions of these two species. The results of this study indicate that lengthening hydroperiods in the Everglades ecosystem may have a positive effect on crayfish productivity.
Show less - Date Issued
- 2006
- PURL
- http://purl.flvc.org/fcla/dt/13361
- Subject Headings
- Ecosystem management--Florida--Everglades National Park, Everglades National Park (Fla ), Crayfish--Habitat--Florida--Everglades National Park, Wetland ecology--Florida--Everglades National Park
- Format
- Document (PDF)
- Title
- The fate of copper in flooded south Florida agricultural soils and its toxicological effects on the Florida apple snail, Pomacea paludosa.
- Creator
- Rogevich, Emily Catherine, Florida Atlantic University, Brooks, W. Randy, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Agricultural sites have been acquired under the Comprehensive Everglades Restoration Plan (CERP) for the creation of water storage areas. Copper desorption and toxicity to the Florida apple snail (Pomacea paludosa) were investigated using soils from these sites. Copper concentrations in II soils ranged from 5 to 234 mg/kg Cu dw, and when flooded, resulted in overlying water Cu concentrations from 9 to 308 11g/L Cu. Juvenile apple snails exposed to three flooded soils had high mortality and...
Show moreAgricultural sites have been acquired under the Comprehensive Everglades Restoration Plan (CERP) for the creation of water storage areas. Copper desorption and toxicity to the Florida apple snail (Pomacea paludosa) were investigated using soils from these sites. Copper concentrations in II soils ranged from 5 to 234 mg/kg Cu dw, and when flooded, resulted in overlying water Cu concentrations from 9 to 308 11g/L Cu. Juvenile apple snails exposed to three flooded soils had high mortality and decreased growth within 9 to 16 days in two ofthe three soils examined. To assess Cu toxicity to the apple snail at various life stages and water quality parameters, 96 hour acute toxicity studies were conducted. Copper was more toxic to juvenile than adult apple snails. Copper toxicity increased as pH decreased and decreased as DOC increased. Hardness had no effect on Cu toxicity to the apple snail. Copper toxicity was a function of organism age, DOC and pH. Copper accumulation by juvenile and adult apple snails was determined for multiple exposure pathways. For 28 days, juvenile snails were exposed to aqueous Cu and adult snails were exposed to Cu contaminated soil, water and food. Whole body Cu in juvenile snails increased with time. The mean Cu bioconcentration factor (BCF) for juvenile snails was 1493. For adult snails, the dietary exposure pathway resulted in the highest bioaccumulation factor (BAF). Most Cu accumulated in soft tissue. During a chronic aqueous exposure, apple snails exposed to 8-16 flg /L Cu for 9 months had high Cu accumulation and significantly reduced clutch production (8-16 flg /L) and egg hatching (16 flg/L ). Chronic Cu exposure initially decreased growth in juvenile snails, but growth rebounded by adulthood and snails appeared to acclimate to chronic Cu exposure. When apple snails with high tissue Cu were fed to redear sunfish (Lepomis microlophus) Cu transfer was minimal, suggesting that the risk of trophic transfer (bioaccumulation) of Cu from the snail to redear sunfish is low and that biomagnification is unlikely. It is uncertain if other apple snail predators would be at risk for dietary Cu transfer.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/fau/fd/FA00000875
- Subject Headings
- Soil pollution--Florida, Florida applesnail--Habitat, Florida applesnail--Effect of heavy metals on, Copper--Toxicology, Ecosystem management--Florida
- Format
- Document (PDF)
- Title
- Using Normal Color, Six Inch Resolution Digital Ortho-Photographs In Mapping Pomacea paludosa Habitat in Grassy Waters Preserve as a Natural Resource Management Tool for the Endangered Florida Raptor, Rostrhamus sociabilis plumbeus.
- Creator
- Peters, Amy Lynn, Roberts, Charles, Florida Atlantic University
- Abstract/Description
-
Normal color digital ortho-photos with six inch resolution were used to test the feasibility of mapping the habitat of the Florida apple snail, the exclusive food source of the Endangered Florida snail kite. Several remote sensing techniques such as unsupervised and supervised classifications are evaluated and accuracy assessed. While the overall ability to classify apple snail habitat is significant, sparse areas of emergent vegetation which are preferred foraging areas for the kite were...
Show moreNormal color digital ortho-photos with six inch resolution were used to test the feasibility of mapping the habitat of the Florida apple snail, the exclusive food source of the Endangered Florida snail kite. Several remote sensing techniques such as unsupervised and supervised classifications are evaluated and accuracy assessed. While the overall ability to classify apple snail habitat is significant, sparse areas of emergent vegetation which are preferred foraging areas for the kite were excluded by the classification and needed to be re-introduced for further analysis. The methodology can be repeated to measure change over time since the NC imagery of Grassy Waters Preserve is acquired frequently. Additionally, three spectral levels of density abundance of wetland graminoid species that denote apple snail habitat were examined for mapping potential on the imagery. A site suitability analysis using a weighed overlay tool in ArcGIS is suggested as a means to include numerous other key factors influencing habitat selection by the snail kite in a mapping project.
Show less - Date Issued
- 2007
- PURL
- http://purl.flvc.org/fau/fd/FA00000807
- Subject Headings
- Natural areas--Florida, Ecosystem management--Florida, Everglade kite--Habitat--Florida, Digital mapping, Habitat conservation--Geographic information systems--Florida
- Format
- Document (PDF)
- Title
- Amount and economic valuation of feral hog damage to a unique basin marsh wetland in Florida.
- Creator
- Engeman, Richard M., Smith, Henry T., Severson, Robert G., Severson, Mary Ann M., Schwiff, Stephanie A., Constantin, Bernice, Griffin, Daniel
- Date Issued
- 2003-10
- PURL
- http://purl.flvc.org/fcla/dt/11532
- Subject Headings
- Ecosystem management--Florida, Wild Swine--United States, Swine--Economic aspects, Swine--Ecology, Wetlands--Economic Aspects, Florida. Dept. of Environmental Protection--Evaluation, Wetland mitigation banking--Florida--Evaluation
- Format
- Document (PDF)
- Title
- Post-fire Succession and Carbon Storage in the Northern Everglades.
- Creator
- Reger, Lisa Marie, Benscoter, Brian, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Fire plays a key role in the ecology of the Everglades and is a ubiquitous tool for managing the structure, function, and ecosystem services of the Greater Everglades watershed. Decades of hydrologic modifications have led to the alteration of plant community composition and fire regime in much of the Everglades. To create a better understanding of post-fire recovery in sawgrass (Cladium jamaicense) communities, sawgrass marshes in the northern Everglades were studied along a chronosequence...
Show moreFire plays a key role in the ecology of the Everglades and is a ubiquitous tool for managing the structure, function, and ecosystem services of the Greater Everglades watershed. Decades of hydrologic modifications have led to the alteration of plant community composition and fire regime in much of the Everglades. To create a better understanding of post-fire recovery in sawgrass (Cladium jamaicense) communities, sawgrass marshes in the northern Everglades were studied along a chronosequence of time since fire and along a nutrient gradient. Areas closer to a water nutrient source and with fewer mean days dry contained greater total and dead aboveground graminoid biomass whereas live graminoid biomass was greater in areas with less time since fire and with fewer days dry. Post-fire characteristics of sawgrass marshes can provide insight on the effectiveness of fire management practices in the maintenance and restoration of quality habitat in the northern Everglades.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004625, http://purl.flvc.org/fau/fd/FA00004625
- Subject Headings
- Everglades National Park (Fla.)--Environmental conditions., Swamp ecology--Florida--Everglades., Restoration ecology--Florida--Everglades., Forest fires--Florida--Everglades., Prescribed burning--Florida--Everglades., Ecosystem management--Florida--Everglades.
- Format
- Document (PDF)
- Title
- Historical analysis of development and its impact on the ecology of the Grassy Waters Preserve.
- Creator
- Yustin, Michael A., Florida Atlantic University, Gallagher, Jacqueline
- Abstract/Description
-
The purpose of this thesis was to document human impacts to Grassy Waters Preserve and correlate that to environmental change. Aerial photographs and archives provided a history of human impacts. These impacts included roadways, canals/levees, development, and landfills. To determine if environmental change occurred vegetation maps were digitized and compared from three study areas using 1940 and 1999 aerial photography. These vegetation maps included open water, transitional marsh/prairie,...
Show moreThe purpose of this thesis was to document human impacts to Grassy Waters Preserve and correlate that to environmental change. Aerial photographs and archives provided a history of human impacts. These impacts included roadways, canals/levees, development, and landfills. To determine if environmental change occurred vegetation maps were digitized and compared from three study areas using 1940 and 1999 aerial photography. These vegetation maps included open water, transitional marsh/prairie, cypress, upland forest and human feature categories. Within all study areas the vegetation maps indicated decreases in the open water community. Within two areas major increases in cypress and uplands occurred. Vegetative shifts varied based on the locations of features like canals and levees. Due to image quality differences statistical analysis of the maps was not possible. However, the magnitude of change suggests that Grassy Waters became more densely vegetated and forested over time.
Show less - Date Issued
- 2006
- PURL
- http://purl.flvc.org/fcla/dt/13355
- Subject Headings
- Habitat conservation--Florida, Grassy Waters Preserve (Fla), Natural history--Florida--Grassy Waters Preserve, Ecosystem management--Florida, Environmental policy--Florida, Restoration ecology--Florida--Planning, Sustainable development--Florida
- Format
- Document (PDF)
- Title
- Mapping wetland vegetation with LIDAR in Everglades National Park, Florida, USA.
- Creator
- De Stoppelaire, Georgia H., Xie, Zhixiao, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
Knowledge of the geospatial distribution of vegetation is fundamental for resource management. The objective of this study is to investigate the possible use of airborne LIDAR (light detection and ranging) data to improve classification accuracy of high spatial resolution optical imagery and compare the ability of two classification algorithms to accurately identify and map wetland vegetation communities. In this study, high resolution imagery integrated with LIDAR data was compared jointly...
Show moreKnowledge of the geospatial distribution of vegetation is fundamental for resource management. The objective of this study is to investigate the possible use of airborne LIDAR (light detection and ranging) data to improve classification accuracy of high spatial resolution optical imagery and compare the ability of two classification algorithms to accurately identify and map wetland vegetation communities. In this study, high resolution imagery integrated with LIDAR data was compared jointly and alone; and the nearest neighbor (NN) and machine learning random forest (RF) classifiers were assessed in semi-automated geographic object-based image analysis (GEOBIA) approaches for classification accuracy of heterogeneous vegetation assemblages at Everglades National Park, FL, USA.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00004276
- Subject Headings
- Everglades National Park (Fla.)--Environmental conditions., Geographic information systems--Florida--Everglades Region., Ecosystem management--Florida--Everglades Region., Vegetation monitoring--Florida--Everglades National Park., Wetland management--Florida--Everglades National Park., Coastal zone management--Remote sensing--Florida--Everglades National Park., Environmental mapping--Florida--Everglades National Park., Environmental monitoring--Remote sensing--Florida--Everglades National Park.
- Format
- Document (PDF)