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Articles 1 - 6 of 6
Full-Text Articles in Civil Engineering
Hydrodynamic Limitations To Mangrove Seedling Retention In Subtropical Estuaries, Kelly M. Kibler, Christian Pilato, Linda Walters, Melinda Donnelly, Jyotismita Taye
Hydrodynamic Limitations To Mangrove Seedling Retention In Subtropical Estuaries, Kelly M. Kibler, Christian Pilato, Linda Walters, Melinda Donnelly, Jyotismita Taye
Flow-biota Interaction and Natural Infrastructure Design
Mangrove forest sustainability hinges upon propagule recruitment and seedling retention. This study evaluates biophysical limitations to mangrove seedling persistence by measuring anchoring force of two mangrove species (Rhizophora mangle and Avicennia germinans). Anchoring force was measured in 362 seedlings via lateral pull-tests administered in mangrove forests of two subtropical estuaries and in laboratory-based experiments. Removal mechanism varied with seedling age: newly-established seedlings failed due to root pull-out while seedlings older than 3 months failed by root breakage. Anchoring force of R. mangle seedlings was consistently and significantly greater than A. germinans (GLM: p = 0.002), however force to …
A Coupled Numerical Model Of Vadose Zone Hydrology And Subsidence In The Everglades Wetlands, Anupama John
A Coupled Numerical Model Of Vadose Zone Hydrology And Subsidence In The Everglades Wetlands, Anupama John
FIU Electronic Theses and Dissertations
Peatlands, a type of wetlands, cover less than 3% of the earth’s surface but are responsible for nearly 5% of global carbon emissions when drained. Alterations to the natural hydrology of the Everglades, one of the largest peatlands in the United States, have resulted in the presence of vadose zones and the consequent subsidence of peat. Everglades restoration efforts are guided by hydrological models that neglect unsaturated water flow, which limits their ability to quantify critical wetland processes. Large datasets of the spatially varying soil hydraulic parameters (SHPs) like the soil water retention curves (SWRCs) are necessary to develop distributed, …
Robust Modeling And Predictions Of Greenhouse Gas Fluxes From Forest And Wetland Ecosystems, Khandker S. Ishtiaq
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 …
Integrated Surface-Ground Water Modeling In Wetlands With Improved Methods To Simulate Vegetative Resistance To Flow, Mauro Nalesso
Integrated Surface-Ground Water Modeling In Wetlands With Improved Methods To Simulate Vegetative Resistance To Flow, Mauro Nalesso
FIU Electronic Theses and Dissertations
This dissertation focused on developing an integrated surface – subsurface hydrologic simulation numerical model by programming and testing the coupling of the USGS MODFLOW-2005 Groundwater Flow Process (GWF) package (USGS, 2005) with the 2D surface water routing model: FLO-2D (O’Brien et al., 1993). The coupling included the necessary procedures to numerically integrate and verify both models as a single computational software system that will heretofore be referred to as WHIMFLO-2D (Wetlands Hydrology Integrated Model). An improved physical formulation of flow resistance through vegetation in shallow waters based on the concept of drag force was also implemented for the simulations of …
The I-70 Greenfield Rest Area Wetland Projects, Shih-Chieh Kao, Ting Pong Chang, Rebeka Sultana, Thomas Konopka, Rao S. Govindaraju, Barry Partridge
The I-70 Greenfield Rest Area Wetland Projects, Shih-Chieh Kao, Ting Pong Chang, Rebeka Sultana, Thomas Konopka, Rao S. Govindaraju, Barry Partridge
JTRP Technical Reports
On-site treatment of wastewater at highway rest areas poses some unique and difficult challenges because of the rural locale, high variability in wastewater flow rate and strength, and lack of knowledgeable personnel on-site. As a potential alternative, a constructed subsurface wetland system was built at the I-70 rest stop nearby Greenfield, Indiana, in 2003. This wetland system, mainly composed of three wetland cells, also includes draw-and-fill and recirculation mechanisms to increase oxygen transfer to the wastewater and improve the overall treatment performance. Special considerations for highway rest areas have been emphasized. A dynamic hydraulic model was developed to help characterize …
Annotated Biobliography Of Remote Sensing For Highway Planning And Natural Resources, An, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor
Annotated Biobliography Of Remote Sensing For Highway Planning And Natural Resources, An, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor
Storrs Agricultural Experiment Station
No abstract provided.