Soil Phosphorus Characteristics and Sources in Tree Islands of the Florida Everglades PDF Download
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Author: Daniel Lyle Irick
Publisher:
ISBN:
Category :
Languages : en
Pages : 138
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Deposition of guano-derived P and N can occur at rates much higher than other P and N sources at some tree island locations in the Everglades suggesting deposition of guano contributes to the accumulation of P at some locations. Some tree island soils also contained bone fragments. The P concentration of the sand sized soil was ~10% and more than twice the concentration of the silt+clay particle size fraction. The presence of apatite and the P concentration in the sand sized soil indicated bioapatite may account for ~65% or more of the total P in the high P tree island soils. The source of bioapatite remains unresolved, but was likely derived from animal wastes due to wildlife utilization and historic anthropogenic occupation. Animal waste derived P appears to potentially contribute large amounts of P to tree island soil. The magnitude of these inputs will vary by island and stability of the material deposited will influence P accumulation in tree islands.
Author: Daniel Lyle Irick
Publisher:
ISBN:
Category :
Languages : en
Pages : 138
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Book Description
Deposition of guano-derived P and N can occur at rates much higher than other P and N sources at some tree island locations in the Everglades suggesting deposition of guano contributes to the accumulation of P at some locations. Some tree island soils also contained bone fragments. The P concentration of the sand sized soil was ~10% and more than twice the concentration of the silt+clay particle size fraction. The presence of apatite and the P concentration in the sand sized soil indicated bioapatite may account for ~65% or more of the total P in the high P tree island soils. The source of bioapatite remains unresolved, but was likely derived from animal wastes due to wildlife utilization and historic anthropogenic occupation. Animal waste derived P appears to potentially contribute large amounts of P to tree island soil. The magnitude of these inputs will vary by island and stability of the material deposited will influence P accumulation in tree islands.
Author: Quentin Clark
Publisher:
ISBN:
Category : Soil absorption and adsorption
Languages : en
Pages : 292
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Author: Marcelo Enrique Lago
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
A numerical model has been developed to study the temporal and spatial variations of Phosphorus mass and fluxes around the tree islands of Shark River Slough in the Everglades. The developed model is based on a conceptualization of physical, chemical and biological processes that consider advective and diffusive transport of dissolved Phosphorus, adsorption on to soil, input from rainfall and external sources, and Phosphorus cycling in biomass. The biomass related processes are Phosphorus uptake, release as litter, transport as suspended litter and release from the decomposition of the deposited litter. The water flow and transport of dissolved Phosphorus in the numerical model are implemented originally in the simulator MODHMS. However, the transport equations for dissolved Phosphorus were also coded separately, as well as the balance equation for suspended litter particles and deposited litter. The parameterization of the model was conducted by using the data collected by Ross et al. [2004] in three tree islands of Shark River Slough, as well as other parameters reported among the literature. The model was calibrated in three phases. Initially, Manning coefficients were adjusted from surface water velocity data collected by Bazante et al. [2004]. Then the calibration of several groundwater flow parameters was performed from water table data collected at wells by Ross et al. [2004]. In the third phase, the Phosphorus input rate from external sources and the initial concentration of Phosphorus were calibrated by assuming that the average surveyed Phosphorus concentration in soil pore water remains approximately constant over a 10 year period. The quantitative assessment of the spatial distribution and temporal variations of Phosphorus mass and fluxes around tree islands obtained from the developed model corroborate the negative effect of the rainfall events on Phosphorus accumulation in the head of the tree island. However, the possible positive effect of the ET driven water flows on Phosphorous accumulation was found not as relevant as hypothesed by other authors in the literature. According to the model results, most of the Phosphorus transport in the tree islands occurs as suspended particles in surface water, even though the transport of dissolved Phosphorus in pore water cannot be neglected around the head of the island. The model results also suggest that an input of Phosphorus from external sources (e.g., animal activity such as bird guano and other sources) is needed to preserve the average Phosphorus levels in the head and in the whole tree island. Finally, Phosphorus accumulation and losses in certain areas of the tree island suggest changes in vegetation that need to be investigated in future work. The developed model can be used as a predicting tool to gain insight into the potential effects of restoration scenarios in tree islands environments. The model could be run for hypothetical future conditions and contribute to provide quantitative information for conservation and restoration efforts in the Everglades and similar wetlands.
Author: Fred H. Sklar
Publisher: Springer Science & Business Media
ISBN: 9400900015
Category : Science
Languages : en
Pages : 539
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Book Description
PREFACE Within the Florida Everglades, tree islands, which cover only a small percentofthis ecosystem, historically have provided essential habitat for a wide variety ofterrestrial and amphibious plants, birds, and animals. These tree islands, however, have been one ofits least studied features. Because of their less flood tolerant vegetation, tree islands are one ofthe most sensitive components ofthe Everglades to changes in hydrology, and many tree islands have been lost during periods when water levels have been abnormally high or low. Their sensitivity to water level changes makes tree islands potentially one ofthe best and surest measures ofthe overall hydrologic health of the Everglades. Consequently, the maintenance of healthy, functioning tree islands and the restoration ofthose that have been lost will be an important performance measures that will be used tojudge the success ofthe Comprehensive Everglades Restoration Plan (CERP). A symposium, Tree Islands ofthe Everglades, was held on July 14 and 15, 1998 at Florida Atlantic University, Boca Raton, Florida. It was sponsored by Florida Center for Environmental Studies and the South Florida WaterManagement District. This was the first scientific meeting ever devoted to tree islands. The organizers of this symposium were Drs. Arnold van der Valk, Florida Center for Environmental Studies and Iowa State University, Fred Sklar, South Florida Water Management District, and Wiley Kitchens, United States Geological Survey.
Author: James A. Entry
Publisher: CRC Press
ISBN: 1498711847
Category : Nature
Languages : en
Pages : 498
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Book Description
The first synthesis of current research regarding Everglades microbial community structure and function, this book provides an understanding of the physical and chemical factors affecting the structure of microbial communities, including nutrient effects, sea level rise, and other potential stressors. The book integrates traditional research on alg
Author: Thomas E. Lodge
Publisher: CRC Press
ISBN: 1498742955
Category : Nature
Languages : en
Pages : 682
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Book Description
"This fourth edition covers the key subjects of previous editions with major updates of the new science and understanding. If there ever was a necessary book for Everglades advocates, students, authors, members of government and their agencies, The Everglades Handbook: Understanding the Ecosystem is an absolute must!" —Nathaniel P. Reed, from the Foreword “This book is far and away the best guide now in print to Everglades issues -- authoritative, well-illustrated, well-indexed, and readable." — Martha Musgrove, retired Miami Herald journalist, founding President of the Decision Makers Forum, and Southeast Regional Director of the Florida Wildlife Federation "Given the astonishing breadth and depth of scientific activities in the Everglades, Tom Lodge once again illustrates his savvy as an articulate science writer in condensing the complex dynamics of this remarkable ecosystem. ...In summary, the Handbook reviews a vast literature into a compelling read about the natural treasures of the Everglades." —Evelyn E. Gaiser, Executive Director, School of Environment, Arts and Society, and Associate Dean, College of Arts & Sciences, Florida International University, modified from Wetlands (2011) 31 _____________________________________________________________________________________ The fourth edition presents expanded treatment of subjects where our knowledge of the Everglades and its restoration has greatly improved. This more detailed coverage includes: Computer modeling and its applications to the Everglades environment Quantified role of water flow in shaping the Everglades landscape The origin and evolution of fixed tree islands Sulfur and related mercury as wetland pollutants Up-to-date summary of the now quantified economic benefits of restoration, shown to be far in excess of the cost The Everglades Handbook: Understanding the Ecosystem, Fourth Edition is a scholarly reference packed cover to cover with scientific information about the ecosystem of the Everglades - taking into account how drastically the Everglades has changed. Topically, the book covers disciplines ranging from ecology, geology, climatology, hydrology, anthropology to conservation biology. Written in Tom Lodge’s trademark accessible style, this extensively researched text is essential reading for anybody trying to understand the challenges we face in restoring this unique ecosystem.
Author: K. Ramesh Reddy
Publisher: CRC Press
ISBN: 9781566703314
Category : Science
Languages : en
Pages : 736
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Book Description
Phosphorus is one of the major nutrients limiting the productivity of terrestrial, wetland and aquatic ecosystems. Over the last decade several research projects were conducted on Florida's ecosystems from state and federal agencies and private industry to address water quality issues, and to develop management practices to control nutrient loads. Phosphorus Biogeochemistry in Sub-Tropical Ecosystems is the first thorough study of the role of phosphorus in ecological health and water quality ever published. Because of its vast and extensively studied ecosystems, Florida has often served as a national laboratory on current and future trends in ecosystem management. The reader will find studies at all levels of biological organization, from the cellular to entire ecological communities. The book is a definitive study of the role and behavior of phosphorus deposition in the upland/wetland/aquatic environment. The papers presented in this book are organized in specific groups: ecological analysis and global issues, biogeochemical transformations, biogeochemical responses, transport processes, phosphorus management, and synthesis. Although Florida's ecosystems are used as a case study, the results presented have global applications.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Successful control techniques and management practices for reduction of particulate phosphorus export must recognize the nature of the sources and their inherent characteristics. These characteristics are significantly different from those of upland systems, and require management practices that address the highly mobile, distributed nature of EAA particulate phosphorus. The subsequent documents in this series address transport characteristics of particulate phosphorus in the EAA and offer some options for control of sources and transport.
Author: Paul Richard Benzing
Publisher:
ISBN:
Category : Histosols
Languages : en
Pages : 312
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Author: Harald Edwin Hammar
Publisher:
ISBN:
Category : Soils
Languages : en
Pages : 106
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