Digital Commons Network^™

Development And Evaluation Of A Multi-Year Fractional Surface Water Data Set Derived From Active/Passive Microwave Remote Sensing Data, Ronny Schroeder, Kyle C. Mcdonald, Bruce D. Chapman, Katherine Jensen, Erika Podest, Zachary D. Tessler, Theodore J. Bohn, Reiner Zimmermann

Publications and Research

The sensitivity of Earth’s wetlands to observed shifts in global precipitation and temperature patterns and their ability to produce large quantities of methane gas are key global change questions. We present a microwave satellite-based approach for mapping fractional surface water (FW) globally at 25-km resolution. The approach employs a land cover-supported, atmospherically-corrected dynamic mixture model applied to 20+ years (1992–2013) of combined, daily, passive/active microwave remote sensing data. The resulting product, known as Surface WAter Microwave Product Series (SWAMPS), shows strong microwave sensitivity to sub-grid scale open water and inundated wetlands comprising open plant canopies. SWAMPS’ FW compares favorably (R2 …

Evidence Of Ancient Maya Agriculture In The Bajos Surrounding Tikal, Guatemala, Adam Calvin Parker

Theses and Dissertations

Current Central American agricultural practices are environmentally and economically unsustainable, yet the ancient Maya who lived in the same region thrived for thousands of years. Archaeologists have attempted to understand the factors enabling the prolonged success and ultimate collapse of the Maya societies. Some have proposed that the karst seasonal wetlands, called bajos, that border many Maya sites in the region were an influential factor in the Maya's ability to flourish. For the past decade, researchers have used carbon isotope analyses to identify areas of ancient maize agriculture at Maya archaeological sites. In this study, we collected soil samples from …

Interagency Disputes Over Dry Fields Or Clean Water: A Case Study Of The Conflict Between Agricultural Drainage Programs And The Chesapeake Bay Cleanup, Timothy J. Lindon, Mark P. Gergen

Mark P. Gergen

Despite the threat posed to Chesapeake Bay by agricultural runoff, SCS continues to plan and fund agricultural drainage projects which will worsen the already critical condition of the bay. One such project now under consideration for the Delmarva peninsula in Maryland and Delaware is discussed. The upper Chester river watershed project provides a case study of the environmental peril posed by drainage projects and of the difficulty environmental agencies confront in seeking to compel other agencies to consider adequately the harmful consequences of their actions. ( 24 references, )

Robust Modeling And Predictions Of Greenhouse Gas Fluxes From Forest And Wetland Ecosystems, Khandker S. Ishtiaq

FIU Electronic Theses and Dissertations

The land-atmospheric exchanges of carbon dioxide (CO₂) and methane (CH₄) are major drivers of global warming and climatic changes. The greenhouse gas (GHG) fluxes indicate the dynamics and potential storage of carbon in terrestrial and wetland ecosystems. Appropriate modeling and prediction tools can provide a quantitative understanding and valuable insights into the ecosystem carbon dynamics, while aiding the development of engineering and management strategies to limit emissions of GHGs and enhance carbon sequestration. This dissertation focuses on the development of data-analytics tools and engineering models by employing a range of empirical and semi-mechanistic approaches to robustly …

Emergent Insect And Neotropical Migratory Bird Interactions And Responses To Habitat, Hydrology, And Progressive Urbanization In The Tampa Bay Region, Nathaniel Lee Goddard

USF Tampa Graduate Theses and Dissertations

The growing human population threatens the many of the earth’s biological systems. In the last 600 years extinction rates risen from 1 extinction per million species per year (E/MSY) in the 1400’s to 50 E/MSY today. During this time period 1.5% of all known birds have gone extinct, because they could not adapt quickly enough to human mediated changes. The goal of this dissertation was to determine how urbanization and anthropogenic services needed to support urban areas impact cypress dome wetland aquatic insect and migratory bird populations that depend on them. In Central Florida cypress dome hydroperiods are driven by …

Living Shorelines: A Novel Remedial Approach For Contaminated Sediments, Christian Hauser

Presentations

From 1926 to 1986, the former Lordship Gun Club, located on Long Island Sound in Stratford, Connecticut, was operated as a trap and skeet shooting facility, which resulted in the discharge of lead shot into surrounding waters and sediments. Between 1987 and 2000, studies were conducted to inform remedial decision-making; remediation occurred in several phases from 2000 to 2011. Remedial action involved excavation of shot-containing sediments and associated vegetation from the intertidal zone, lead shot extraction from excavated sediments, and replacement of sediments to their native locations. Subsequent monitoring has revealed that this action destabilized intertidal sediments and led to …

Preserving Dynamic Systems: Wetlands, Ecology And Law, Alyson C. Flournoy

Alyson Flournoy

Ecology has advanced human understanding of natural systems considerably over the course of this century. Wetlands law and policy have evolved in response to our increased understanding of wetlands and the many benefits we derive from them. Notwithstanding this shift in policy and law, roughly 50% of the wetlands that existed in the continental United States in colonial times have been lost or degraded largely as a result of recent human activity. Current policies struggle to reconcile the goal of preventing further loss with the pervasive concern for making our laws more efficient. This essay explores the lessons ecology offers …

An Examination Of Net Primary Production In Southern Appalachian Wetlands, Mike Maguigan

Theses and Dissertations

Southern Appalachian wetlands have yet to be studied in terms of net primary production (NPP), thus few studies have been conducted to examine what environmental factors have relationships with NPP. To that end, this research investigates several facets of southern Appalachian wetland production. The research was divided into three studies. The first study was conducted to answer the question of what environmental factors have relationships with NPP. It appears that stream discharge and annual precipitation had the strongest relationships with NPP (r = 0.91, p <0.05 and r = 0.81, p <0.05, respectively), yet both factors showed multicolinearity (r = 0.97, p <0.05). The strong relationships between hydrologic factors and NPP is similar to montane wetlands in the western United States. The second study was conducted to examine the relationship between water chemistry and NPP. Calcium (Ca), Magnesium (Mg), and pH were examined in order to determine if any of the aforementioned factors had a relationship with NPP. Neither Ca (r = -0.34, p = 0.0835) nor Mg (r =-0.38, p = 0.0535) had strong relationships with NPP, though pH (r = -0.66, p <0.05) had a strong negative relationship with NPP. The acidity of the stream water, driven by the acid rain in the southern Appalachians, creates enhanced conditions for wetland plants to grow. The third study was conducted to establish which vegetation index was best for estimating NPP from proximally and remotely sensed data. The findings suggest that VARIRed Edge was best for examining NPP at the in situ level, NDVI was best for examining NPP at the airborne level, and the DVI was the best for examining NPP at the satellite level. NPP in southern Appalachian wetlands is driven by the chemistry, specifically the pH, of stream discharge and annual precipitation and can be monitored by NDVI using NAIP data or DVI using Landsat data. The examination of NPP in southern Appalachians in response to environmental factors and water chemistry along with the examination of vegetation indices at three levels of platforms will help to monitor and manage these rare and unique ecosystems in the future.

Biogeochemical Processes In Hydrosoil Of Pilot-Scale Constructed Wetland Treatment Systems Designed For Treatment Of Selenium, Christina Blaszkiewicz

All Theses

Two pilot-scale wetland treatment system cells (nutrient amended and unamended) were designed and constructed to reduce aqueous Se concentrations in simulated energy-derived water. Specific objectives of this study were: (i) measure and correlate hydrosoil conditions with Se concentrations vertically through the hydrosoil; (ii) investigate Se-accumulating biogeochemical processes (dissimilatory Se reduction and sorption) operating in the hydrosoil; and (iii) evaluate the effect of a nutrient amendment on hydrosoil conditions, Se accumulation, and Se-sequestering biogeochemical processes in the hydrosoil. Se accumulation (i.e. total Se concentration) and hydrosoil conditions were measured with depth in the hydrosoil. Se-sequestering biogeochemical processes were investigated by counting …

Development Of A Bi-National Great Lakes Coastal Wetland And Land Use Map Using Three-Season Palsar And Landsat Imagery, Laura Bourgeau-Chavez, Sarah L. Endres, Michael Battaglia, Mary Ellen Miller, Elizabeth Banda, Zachary Laubach, Phyllis Higman, Pat Chow-Fraser, James Marcaccio

Michigan Tech Research Institute Publications

Methods using extensive field data and three-season Landsat TM and PALSAR imagery were developed to map wetland type and identify potential wetland stressors (i.e., adjacent land use) for the United States and Canadian Laurentian coastal Great Lakes. The mapped area included the coastline to 10 km inland to capture the region hydrologically connected to the Great Lakes. Maps were developed in cooperation with the overarching Great Lakes Consortium plan to provide a comprehensive regional baseline map suitable for coastal wetland assessment and management by agencies at the local, tribal, state, and federal levels. The goal was to provide …

An Assessment Of The Hydrologic Connection Between Blacktail Creek And A Riverine Wetland For Nutrients Processing Potential, Jonathan Ball

Graduate Theses & Non-Theses

Silver Bow Creek (Blacktail Creek to Warm Springs Creek) is listed as impaired for nitrates, total nitrogen and total phosphorus in the Montana 2014 draft 303(d) list. Blacktail Creek, a head water to Silver Bow Creek, flows approximately 17 miles before joining Silver Bow Creek in Butte, MT. Previous studies have shown that nutrient concentrations in Blacktail Creek are significantly higher than the Montana Department of Environmental Quality (DEQ) target concentrations. In the literature, constructed (treatment) wetlands have been popularly used as an effective Best Management Practice (BMP) to process nutrients from municipal, industrial, and livestock wastewater. While there has …

Evaluation Of Alos Palsar Data For High-Resolution Mapping Of Vegetated Wetlands In Alaska, Daniel Clewley, Jane Whitcomb, Mahta Moghaddam, Kyle Macdonald, Bruce Chapman, Peter Bunting

Publications and Research

As the largest natural source of methane, wetlands play an important role in the carbon cycle. High-resolution maps of wetland type and extent are required to quantify wetland responses to climate change. Mapping northern wetlands is particularly important because of a disproportionate increase in temperatures at higher latitudes. Synthetic aperture radar data from a spaceborne platform can be used to map wetland types and dynamics over large areas. Following from earlier work by Whitcomb et al. (2009) using Japanese Earth Resources Satellite (JERS-1) data, we applied the “random forests” classification algorithm to variables from L-band ALOS PALSAR data for 2007, …

Multi-Scale Remote Sensing Assessments Of Forested Wetlands: Applications To The Everglades National Park, Emanuelle A. Feliciano

Open Access Dissertations

Wetlands are regions that are covered permanently or seasonally with water and/or have saturated soils for long periods of time. They provide benefits to human society, including flow regulation, storm protection, aquifer recharge, sediment and nutrient retention, energy production, conservation of fauna and flora, recreation and tourism, and are a natural laboratory for research and education. Wetland ecosystems are under severe pressure due to anthropogenic activities and climate change. There is an urgent need to conserve, restore and monitor wetlands at all scales (local to global). Wetlands are difficult to monitor, due to their large area and limited accessibility. High-resolution …

Causes Of The Decline In The Loss Of Vegetated Palustrine Wetlands In The U.S. 1955 - 2009, Roger Kent Wiebusch

Dissertations

By 1980, the United States had lost over 50 percent of its original wetland resources. The U.S. National Wetland Inventory estimates that 95 percent of annual wetland losses since 1955 occurred to palustrine wetlands. The majority of these losses occurred to the three types of palustrine vegetated wetlands: emergent, forested, and shrub. The primary cause for wetland losses from the mid-1950s to the mid-1980s was agricultural conversion supported by federal agricultural policies, especially the Agricultural Conservation Program that provided significant direct and indirect support for wetland conversions. The rate of converting wetland to agriculture has declined since the mid-1950's with …

Linking Old Librarianship To New: Aligning 5-Steps Of The Innovator's Dna In Creating Thematic Discovery Systems For The Everglades, L. Bryan Cooper, Margarita Perez Martinez

Works of the FIU Libraries

This poster presentation from the May 2015 Florida Library Association Conference, along with the Everglades Explorer discovery portal at http://ee.fiu.edu, demonstrates how traditional bibliographic and curatorial principles can be applied to: 1) selection, cross-walking and aggregation of metadata linking end-users to wide-spread digital resources from multiple silos; 2) harvesting of select PDFs, HTML and media for web archiving and access; 3) selection of CMS domains, sub-domains and folders for targeted searching using an API.

Choosing content for this discovery portal is comparable to past scholarly practice of creating and publishing subject bibliographies, except metadata and data are housed in …

Mapping Regional Inundation With Spaceborne L-Band Sar, Bruce Chapman, Kyle Macdonald, Masanobu Shimada, Ake Rosenqvist, Ronny Schroeder, Laura Hess

Publications and Research

Shortly after the launch of ALOS PALSAR L-band SAR by the Japan Space Exploration Agency (JAXA), a program to develop an Earth Science Data Record (ESDR) for inundated wetlands was funded by NASA. Using established methodologies, extensive multi-temporal L-band ALOS ScanSAR data acquired bi-monthly by the PALSAR instrument onboard ALOS were used to classify the inundation state for South America for delivery as a component of this Inundated Wetlands ESDR (IW-ESDR) and in collaboration with JAXA’s ALOS Kyoto and Carbon Initiative science programme. We describe these methodologies and the final classification of the inundation state, then compared this with results …

Life Cycle Cost Assessment: A Win-Win For Virginia Wetlands, Austen Kelso

Environmental Studies Senior Seminar Projects

Virginia shorelines are facing some of the highest rates of sea level rise seen over the last 5 millennia and are among the most vulnerable coastlines in the country to the effects of sea level rise such as flooding and storm surge (Down et al. 1994). In the face of these rising sea levels, coastal wetland habitats will be forced to migrate inland to avoid inundation (Akumu et al. 2011). However, increased development on the Virginia coast threatens these critical wetland habitats by blocking their inland movement as the try to avoid rapidly rising sea levels. Without a clear migratory …

Changes To Shoreline Hardening Process In The Face Of Climate Change, George Appling

Environmental Studies Senior Seminar Projects

As a result of global climate change, sea level has risen and will continue to rise throughout the 21st century. Sea level rise has been higher in Virginia than any other state over the past 100 years (US Climate Change Science Program 2009). Varied projections show that sea level could rise 1.2 to 5.5 feet above 1992 levels by 2100 (Boon et al. 2010; Ezer and Corlette 2012; Sallengar et al. 2012). Sea level rise threatens to drown intertidal wetlands (Craft et al. 2009; FitzGerald et al. 2010; Kirwan and Guntenspergen 2010; Menon et al. 2010). Wetlands are key biodiversity …

The Adopt-A-Wetland Program, Lindsey Hines

Environmental Studies Senior Seminar Projects

Wetlands are a “biological super system” hosting a vital reservoir of biodiversity potential. Conserving wetlands and protecting their biodiversity is instrumental in upholding the ecosystem services wetlands provide. These ecosystem services of flood control, food supply, clean water, recreational areas and more are major elements in Virginia’s economy and cultural society. Current models projecting climate change impacts on the Virginian coastline predict sea-level rise to be incompatible with rate of migration and adaptation needed for wetlands. Existing wetland conservation efforts are lacking the required action to combat these imminent problems. Land acquisition is essential to accommodate wetland migration to ensure …

Requiring Responsible Mitigation Banking, Julia Baer

Environmental Studies Senior Seminar Projects

In the national attempt to achieve “no-net-loss” of wetlands, the business of wetland mitigation banking has experienced enormous growth over the past few decades. These banks’ purpose is to compensate for wetland loss due to development through the restoration and creation of wetlands elsewhere. While this mitigates the rate of wetland loss, “no-net-loss” is not truly achieved because development is the only federally recognized force destroying wetlands today. Wetland mitigation banks should be required to take sea level rise into account when selecting new sites, and forbidden from using sites where function losses exceed 5% within 50 years, using the …

Wetlands Are Important, United States Fish And Wildlife Service

U.S. Government Posters

This poster illustrates the value of wetlands with photographs which feature their multiple uses: water purification, erosion control, flood protection, food source, home for rare species, recreation and beauty. Includes suggestions for helping to save the disappearing wetlands. Verso of poster shows photographs of different types of wetlands.

Atlas Of Maine: Conserved Waterbodies In Maine, Jessica P. Batchelder

Atlas of Maine

The Conserved Waterbodies in Maine map was created using data from the Maine Office of GIS and the National Wetlands Inventory. This map shows the areas of conserved lands, wetlands, lakes and rivers to give an understanding of what waterbodies are conserved in the state of Maine.

Atlas Of Maine: Inland Waterfowl And Wading Bird Habitat, James E. Harvey

Atlas of Maine

This map shows the habitat of inland waterfowl and wading birds in the state of Maine determined to be high or moderate rated Significant Wildlife Habitats by Maine's Natural Resources Protection Act. These habitats may only be tampered with after permit and only if damage is insignificant or compensation for destruction is provided. Also shown is habitat within conserved land, protected from any damage. The complete wetlands and freshwater of Maine are also shown, as designated by the U.S. Fish and Wildlife Service.

Book Review: Environmental Protection And Coastal Zone Management In Asia And The Pacific. Kato, Kumamoto, Matthews, & Suhaimi Eds. Tokyo University Press. 1985., Thomas J. Schoenbaum

Georgia Journal of International & Comparative Law

No abstract provided.

Tropical Wetlands As A Dominant Driver Of Long-Term Atmospheric Methane Changes, Carrie Ann Sharitt, Ed Dlugokencky

STAR Program Research Presentations

Atmospheric methane has important indirect and direct contributions to climate. It has a radiative forcing of 0.5 W/m2 which is second only to carbon dioxide. It is also important in atmospheric chemistry by affecting the oxidizing capacity of the atmosphere. The main sources of methane to the atmosphere are known but the relative contributions of each source have large uncertainties. Atmospheric measurements are used to try to understand methane’s budget of emissions and losses. Approximately 2/3 of methane emissions are from anthropogenic sources (fossil fuel exploitation, ruminant animals, landfills, and rice agriculture) and about 1/3 are from natural sources (wetlands, …

A Baseline Study Of Edaphic Characteristics, Vegetation Structure, And Recruitment Of Native Baldcypress (Taxodium Distichum (L). Rich. Var. Distichum) In The Newly Restored Wetland Of The Vcu Rice Rivers Center, Melissa J. Davis, Matthew S. Schibner

Rice Rivers Center Research Symposium

In theory, the ideal of ecological restoration is to reestablish a completely functioning ecosystem, however restoration success is often elusive (Stanturf et al. 2001). There is a significant gap in the current research on the impacts of restoration management of restored wetlands on ecosystem functions, especially biogeochemical cycling (Bernal & Mitsch 2013). Furthermore, there are many questions about management techniques when it comes to ecological engineering versus self-design (Bernal & Mitsch, 2013). However, we do know that it is critical to understand the species' life history, habitat template, and spatio temporal scope when attempting to re-establish populations (Lake et al. …

Using The Past To Restore The Future: Quantifying Historical Vegetation To Assist In Tidal Freshwater Wetland Restoration Former Lake Charles At The Vcu Rice Rivers Center, Christopher D. Gatens, Edward R. Crawford

Rice Rivers Center Research Symposium

Wetlands have been providing humans with critical natural ecosystem services throughout our time on Earth. Nevertheless, these invaluable ecosystems have been habitually altered as a cost of human progression. Two of the most common alterations to wetlands are hydrologic, in the form of damming, and filling. Both occurred along Kimages Creek in Charles City County, VA during the 19th and 20th centuries. In 2010 the Lake Charles dam was partially removed, restoring the creek's tidal communication with the James River and beginning tidal forested freshwater wetland restoration. Upon the recession of the body of water, numerous woody stumps were revealed.

Environmental Federalism's Tug Of War Within, Erin Ryan

Erin Ryan

Anyone paying attention has noticed that many of the most controversial issues in American governance—health care reform, marriage rights, immigration, drug law, and others—involve questions of federalism. The intensity of these disputes reflects inexorable pressure on all levels of government to meet the increasingly complicated challenges of governance in an ever more interconnected world, where the answers to jurisdictional questions are less and less obvious. Yet even as federalism dilemmas continue to erupt all from all corners, environmental law remains at the forefront of controversy, and it is likely to do so for some time. From mining to nuclear waste …

Environmental Federalism’S Tug Of War Within, Erin Ryan

Scholarly Publications

The intensity of federalism disputes reflects inexorable pressure on all levels of government to meet the increasingly complicated challenges of governance in an ever more interconnected world. Yet even as federalism dilemmas continue to erupt all from all corners, environmental law remains at the forefront of controversy. This chapter argues that environmental law is uniquely prone to federalism discord because it inevitably confronts the core question with which federalism grapples — who gets to decide? — in contexts where state and federal claims to power are simultaneously at their strongest. Environmental problems tend to match the need to regulate the …

Alito's Voice: Koontz And The End Of Justice Steven's Private Private Property Regulation Policy, Colin W. Maguire

Cleveland State Law Review

This article talks about the substantial distinction between a physical government invasion and a coercive request for funds, if the government action fails under Nollan and Dolan. Clearly, there is a newly recognized risk to water resource regulators who try to stop development in areas which are considered wetlands.