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Oranges and inlets
Title
Oranges and inlets: an environmental history of Florida's Indian River Lagoon.
Creator
Osborn, Nathaniel, Dorothy F. Schmidt College of Arts and Letters, Department of History
Abstract/Description
Nineteenth century settlers in Florida's Indian River Lagoon (IRL) region created an isolated fringe culture wholly dependent on the instable hydrological forces of the shallow lagoon system. These settlers were among the first to construct a built environment market by the dredging and filling that would define much of the twentieth century Sunshine State. There has been no period when the liminal IRL ecosystem was not without shifting barrier islands and dramatically varying salinity levels...
Show moreNineteenth century settlers in Florida's Indian River Lagoon (IRL) region created an isolated fringe culture wholly dependent on the instable hydrological forces of the shallow lagoon system. These settlers were among the first to construct a built environment market by the dredging and filling that would define much of the twentieth century Sunshine State. There has been no period when the liminal IRL ecosystem was not without shifting barrier islands and dramatically varying salinity levels due primarily to the oceanic interchange following the opening and closing of natural inlets. This paper suggests that attempts to "restore" the lagoon will necessarily declare an arbitrary historical form to be normative for the system. The first and last chapters provide an overview of the system's origins and recent history, while the core of the paper focuses on human-environment interaction of the lagoon in the late nineteenth and early twentieth century.
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Date Issued
2012
PURL
http://purl.flvc.org/FAU/3355868
Subject Headings
History, Environmental aspects, History, Environmental aspects
Format
Document (PDF)
Generating space-time hypotheses in complex social-ecological systems
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.
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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)
The Ascidian Styela plicata As a Potential Bioremediator of the Brown Tide Pelagophytes Aureoumbra lagunensis and Aureococcus anophagefferens
Title
The Ascidian Styela plicata As a Potential Bioremediator of the Brown Tide Pelagophytes Aureoumbra lagunensis and Aureococcus anophagefferens.
Creator
Klarmann, Phyllis A., Hartmann, James X., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
A brown tide bloom of the pelagophyte Aureoumbra lagunensis caused significant impacts to north Indian River Lagoon (IRL) in 2012-2013, including seagrass die-offs, fish kills, and reduced growth and grazing of ecologically important bivalves. There is potential for another pelagophyte, Aureococcus anophagefferens, to expand into this system. Filtration rates (FR) of the pleated tunicate Styela plicata exposed to Aureoumbra lagunensis and Aureococcus anophagefferens were measured against...
Show moreA brown tide bloom of the pelagophyte Aureoumbra lagunensis caused significant impacts to north Indian River Lagoon (IRL) in 2012-2013, including seagrass die-offs, fish kills, and reduced growth and grazing of ecologically important bivalves. There is potential for another pelagophyte, Aureococcus anophagefferens, to expand into this system. Filtration rates (FR) of the pleated tunicate Styela plicata exposed to Aureoumbra lagunensis and Aureococcus anophagefferens were measured against exposure to a control alga (Tisochrysis lutea) in order to determine its potential use as a bioremediator against these harmful algal blooms (HABs). In addition, whether S. plicata might serve as a vector of HABs was studied by culturing fecal deposits. Short-term exposure to HABs significantly reduced FR, whereas long-term exposure indicates comparable cell removal compared to the control. Vector potential of S. plicata was inconclusive. Results warrant further research to determine whether S. plicata can acclimate or respond to HAB conditions over time.
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Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00004513
Subject Headings
Algal blooms -- Florida -- Indian River Lagoon, Cyanobacterial blooms -- Toxicology, Estuarine ecology, Indian River Lagoon (Fla.) -- Environmental aspects, Marine bioremediation, Marine ecology, Marine pollution, Water quality biological assessment
Format
Document (PDF)