Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 21 for “"wetland hydrology"”.
-
Wetland hydrology and soils as components of Virginia bog turtle (Glyptemys muhlenbergii) habitat
… made more severe by anthropogenic factors. The wetland habitats that are used by bog turtles contain seepage areas and soil saturation that are characteristic of specific types of wetlands, suggesting that bog turtle rarity may in part be attributed to narrow habitat requirements. In this …
-
Characterizing Wetland Hydrology, Chemistry, And Soils For An Endemic Crayfish, The Piedmont Blue Burrower
… of burrowing crayfish, groundwater hydrology, water chemistry, and soil properties were assessed to determine their importance for the state-listed endangered, primary burrower <em>Cambarns harti</em>. Groundwater hydrology and chemistry were monitored from shallow wells installed …
-
Groundwater and Tidal Controls on Wetland Hydrology, Julie J. Metz Wetland Mitigation Bank, Woodbridge, Virginia
<p>Julie J. Metz Wetlands Mitigation Bank, a 92-hectare freshwater wetland located in Woodbridge, Virginia, borders the tidally-influenced Neabsco Creek. Seven pods separated by earthen berms were built by Wetland Studies and Solutions Inc. (WSSI) in 1995 and 1997 by removing the toe of small sandy …
-
Initial Wetland Hydrology and Vegetation Composition in Predicted Wetlands Adjacent to Lake Naconiche, Nacogdoches County, Texas
… adjacent to the lake would be converted into wetlands. The purpose of the study was to evaluate the creation of wetlands around the lake and establish a benchmark of vegetation composition and condition for future comparison. Eight locations, placed where the majority of wetlands were expected …
-
Assessing restoration potential in relict wetland soils: investigating the effect of wetland hydrology on soil microbial community composition and denitrification potential
… influence rates of biogeochemical cycling in wetland ecosystems; specifically, they are strong determinants of rates of denitrification typically observed. Human induced land use changes have significantly reduced the acreage of wetland habitats, with dam building in the eastern United States …
-
RADAR MONITORING OF HYDROLOGY IN MARYLAND'S FORESTED COASTAL PLAIN WETLANDS: IMPLICATIONS FOR PREDICTED CLIMATE CHANGE AND IMPROVED MAPPING
Wetlands provide important services to society but Mid-Atlantic wetlands are at high risk for loss, with forested wetlands being especially vulnerable. Hydrology (flooding and soil moisture) controls wetland function and extent but it may be altered due to changes in climate and anthropogenic …
-
Hydric soil properties as influenced by land-use in Southeast Virginia wet flats
… season used by regulators in hydric soil and wetland hydrology and the validity of ignoring land use in these definitions is questionable. This study compared measured air and soil temperature with various growing season dates and indicators, and determined the relationships between the …
-
Constructed Floodplain Wetland Effectiveness for Stormwater Management
A 0.2-hectare wetland was constructed in the floodplain of Opequon Creek in Northern Virginia as a best management practice (BMP) for stormwater management. The research goals were to 1) determine if wetland hydrology existed and quantify the role of groundwater exchange in the constructed wetland …
-
Estimating Flow Through Rock Weirs
… stormwater management, and constructed wetlands. Rock weirs increase hydraulic head upstream, and facilitate fish passage, channel stabilization, floodplain reconnection, and in-stream habitat creation. When used in constructed wetlands, rock weirs play a valuable role in developing …
-
Evaluation of a Water Budget Model for Use in Wetland Design
Wetland ecological function greatly depends on the wetland hydrology. As a result, correctly estimating the wetland water budget, is essential to the success of created wetlands. A wetland water budget model, Wetbud, was developed by collaborators from Virginia Tech, Old Dominion University, and …
-
An Examination of the Legal, Social, and Environmental Issues That Surround the Restoration of Tidal Hydrology in Edisto Beach, South Carolina
… flooding have far-reaching impacts in coastal wetlands, including altered vegetation, sediment biogeochemistry, water quality, sediment inputs, fish and wildlife populations, recreational use, and potential future uses. There is an increasing interest to wetland hydrology restoration. Wetland …
-
Hydrologic and topographic analyses of bog turtle (Glyptemys muhlenbergii) wetlands
… federally threatened species, depend on mountain wetland seeps to support their habitat needs. Bog turtles have been found to predominantly use saturated soil areas, making them highly sensitive to small changes in wetland hydrology. Recent research determined that water level elevations across …
-
Amphibian and reptile conservation in a changing environment: Case studies from the southeastern United States
… Detection and Ranging (LiDAR) data to measure wetland bathymetry (basin shape) in flatwoods salamander breeding wetlands. Bathymetry data were used to construct stage–area relationships for each wetland, and a history of water level monitoring data were applied to these relationships to build …
-
Amphibian and plant communities of natural and constructed upland-embedded wetlands in the Daniel Boone National Forest
<p>Wetlands fulfill many vital ecological functions, including providing habitat for amphibians and plants. Some wetlands, known as upland-embedded wetlands (UEWs), are depressional wetlands surrounded completely by upland habitat. This wetland type has been constructed in many areas for …
-
Variability and Drivers of Forest Communities at the Great Dismal Swamp
… in the Atlantic Coastal Plain. Once a mosaic of wetland communities, disturbances (e.g., timber harvesting and ditching) have resulted in altered hydrologic regime, homogenized forest communities, and increased peat subsidence. In response, hydrologic restoration and forest management aim to …
-
Estimating the Components of a Wetland Water Budget
The design of wetlands to replace those lost to development requires quantitative understanding of the wetland water budget in order to estimate the amount of water available to the wetland over time. Many methods exist to estimate each component of the wetland water budget. In this study, monthly …
-
Surface Water and Groundwater Hydrology of Borrow-Pit Wetlands and Surrounding Areas of the Lewisville Lake Environmental Learning Area, Lewisville, Texas
… characterize the surface water and groundwater hydrology of borrow-pit wetlands located within the borders of the Lewisville Lake Environmental Learning Area (LLELA), east of the Elm Fork of the Trinity River. The wetlands were excavated into alluvial deposits downstream of the Lewisville Lake …
-
Physical and Hydrologic Responses of an Intensively Managed Loblolly Pine Plantation to Forest Harvesting and Site Preparation
… include thousands of acres of jurisdictional wetlands that are economically, socially, and environmentally important. These highly productive forests have been intensively managed as pine plantations for the past few decades. More recently, harvesting and site preparation practices have become …
-
INTEGRATED WATER RESOURCES ASSESSMENT AND MANAGEMENT IN A DROUGHT-PRONE WATERSHED IN THE ETHIOPIAN HIGHLANDS
… hydrological and land cover changes in a wetland through remote sensing, hydrological measurements, rainfall records, and a residents? survey. All evidence indicated limited flooding and dense woody vegetation cover in the wetland 40 years ago and a trend towards current conditions of no …
-
Remobilization Of Cobalt, Copper, Nickel, Lead, And Zinc In A Riparian Wetland Model
… of chemically persistent metals in riparian wetland systems that could have a detrimental impact on the environment is an area of active research. This study utilized a physical model consisting of open water and wetland cells designed to simulate a natural riparian wetland to examine the …
Page 1 of 2