Spatial Relationships Between Physico-chemical Soil Properties and Vegetative Patterns in Everglades Water Conservation Area 1 PDF Download
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Author: Tiffany Kapner
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Total N showed higher levels in the interior of WCA 1. Results for TC varied with different structures. Higher levels of TP and TCa were found in cattails, an invasive species, while lower levels were found in areas of native plant species. Total N showed little variation within the Water Conservation Area (WCA) overall and no significant correlation with specific vegetation species, but tended to have results that were the contrary to TP and TCa. The lowest mean value for NDVI and NDVI green was found in Open Water and the highest mean value in Hardwood Swamp. NDWI showed a wider range than both NDVI and NDVI green with the lowest mean value found in Sawgrass Marsh and the highest in Open Water, suggesting that spectral data are useful to explain the variability of biophysical signatures within vegetation classes. Functional relationships between spectral indices and TP were analyzed. The TN/TP and TC/TP ratios showed moderate and strong associations, respectively, to different vegetation classes, whereas TC/TN was insensitive. In summary, these findings support the hypothesis that high levels of TP are associated with increased occurrence of invasive plant species and decreased occurrence of native plant species and that nutrient levels vary due to external and internal forcing functions. These results will support the restoration process in the Everglades by increasing the understanding of those factors that cause shifts in vegetative patterns.
Author: Tiffany Kapner
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Total N showed higher levels in the interior of WCA 1. Results for TC varied with different structures. Higher levels of TP and TCa were found in cattails, an invasive species, while lower levels were found in areas of native plant species. Total N showed little variation within the Water Conservation Area (WCA) overall and no significant correlation with specific vegetation species, but tended to have results that were the contrary to TP and TCa. The lowest mean value for NDVI and NDVI green was found in Open Water and the highest mean value in Hardwood Swamp. NDWI showed a wider range than both NDVI and NDVI green with the lowest mean value found in Sawgrass Marsh and the highest in Open Water, suggesting that spectral data are useful to explain the variability of biophysical signatures within vegetation classes. Functional relationships between spectral indices and TP were analyzed. The TN/TP and TC/TP ratios showed moderate and strong associations, respectively, to different vegetation classes, whereas TC/TN was insensitive. In summary, these findings support the hypothesis that high levels of TP are associated with increased occurrence of invasive plant species and decreased occurrence of native plant species and that nutrient levels vary due to external and internal forcing functions. These results will support the restoration process in the Everglades by increasing the understanding of those factors that cause shifts in vegetative patterns.
Author: K. R. Reddy
Publisher:
ISBN:
Category : Soil structure
Languages : en
Pages :
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Author: Lance Gunderson
Publisher:
ISBN: 9780530003276
Category : Nature
Languages : en
Pages : 262
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Abstract: The Everglades is a unique wetland ecosystem. During this century, the ecosystem has been partitioned for disparate uses of human habitation, agriculture, water conservation and ecosystem conservation in a national park. The sustainability of Everglades National Park is dependent upon upstream water sources. Water management in the Everglades and water deliveries to the Park are linked to human perceptions of ecosystem dynamics. One line of inquiry used expansion of a state-of-the-art computer model to examine the upstream area that once contributed water to the Park. Linkages between vegetation and hydrology were added as vegetation mediation of evapotranspiration and flow and hydrologically induced vegetation changes, but neither addition appreciably improve understanding of hydrodynamics in the Everglades system at the scale of the model. Prior to management, the entire system, south of Lake Okeechobee, contributed flow to Everglades Park except during dry years. Since the onset of intensive water management, an equivalent area of only about one-third of the historic drainage basin has supplied water into the Park. But these conclusions are dependent upon the assumptions made to represent the system at a specific spatial-temporal scale in a model. At other scales the conclusions could well be different. That led to the second major topic of this thesis; that of cross-scale structure and dynamics. A cross-scale mode of inquiry suggests that ecosystems exhibit discontinuities in spatial structures and temporal patterns across time and space due to the interaction of key processes operating over different scale ranges. Spatial patterns in the topography, vegetation and fire data sets exhibited scale regions of self-similarity separated by distinct breaks. Temporal patterns of rainfall, stage, flow, evaporation and sea-level exhibited multiple cycles. These analyses support the theory that ecosystems are structured around a few keystone variables of mixed spatial and temporal dimensions. Dramatic discontinuities appear in patterns as a result of the interactions of processes operating at different space and time domains. This emerging viewpoint of ecosystem structure and dynamics will hopefully provide a basis for new understanding and hence improved management of this unique ecosystem. Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Spatial and Temporal Dynamics in the Everglades Ecosystem With Implications for Water Deliveries to Everglades National Park" by Lance H. Gunderson, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.
Author: K. R. Reddy
Publisher:
ISBN:
Category : Soil structure
Languages : en
Pages :
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309167744
Category : Science
Languages : en
Pages : 98
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Book Description
The report evaluates a White Paper written by restoration planners in South Florida on the role of water flow in restoration plans. The report concludes that there is strong evidence that the velocity, rate, and spatial distribution of water flow play important roles in maintaining the tree islands and other ecologically important landscape features of the Everglades.
Author: K. R. Reddy
Publisher:
ISBN:
Category : Soil chemistry
Languages : en
Pages : 214
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Author: Jennifer Enos Silveira
Publisher:
ISBN:
Category : Conservation of natural resources
Languages : en
Pages : 354
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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1732
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Book Description
Author: Ken W. Krauss
Publisher: John Wiley & Sons
ISBN: 111963928X
Category : Science
Languages : en
Pages : 484
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Book Description
Explores how the management of wetlands can influence carbon storage and fluxes. Wetlands are vital natural assets, including their ability to take-up atmospheric carbon and restrict subsequent carbon loss to facilitate long-term storage. They can be deliberately managed to provide a natural solution to mitigate climate change, as well as to help offset direct losses of wetlands from various land-use changes and natural drivers. Wetland Carbon and Environmental Management presents a collection of wetland research studies from around the world to demonstrate how environmental management can improve carbon sequestration while enhancing wetland health and function. Volume highlights include: Overview of carbon storage in the landscape Introduction to wetland management practices Comparisons of natural, managed, and converted wetlands Impact of wetland management on carbon storage or loss Techniques for scientific assessment of wetland carbon processes Case studies covering tropical, coastal, inland, and northern wetlands Primer for carbon offset trading programs and how wetlands might contribute The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity.Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
Author: National Research Council
Publisher: National Academies Press
ISBN: 030918150X
Category : Science
Languages : en
Pages : 140
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Book Description
The Water Science and Technology Board and the Board on Environmental Studies and Toxicology have released the seventh and final report of the Committee on Restoration of the Greater Everglades Ecosystem, which provides consensus advice to the South Florida Ecosystem Restoration Task Force on various scientific and technical topics. Human settlements and flood-control structures have significantly reduced the Everglades, which once encompassed over three million acres of slow-moving water enriched by a diverse biota. To remedy the degradation of the Everglades, a comprehensive Everglades Restoration Plan was formulated in 1999 with the goal of restoring the original hydrologic conditions of its remaining natural ecosystem. A major feature of this plan is providing enough storage capacity to meet human needs while also providing the needs of the greater Everglades ecosystem. This report reviews and evaluates not only storage options included in the Restoration Plan but also other options not considered in the Plan. Along with providing hydrologic and ecological analyses of the size, location and functioning of water storage components, the report also discusses and makes recommendations on related critical factors, such as timing of land acquisition, intermediate states of restoration, and tradeoffs among competing goals and ecosystem objectives.
