A5054988256- Hydrology and Sediment Transport Processes
- Soil erosion and sediment transport
- Hydrology and Watershed Management Studies
- Coastal wetland ecosystem dynamics
- Soil and Water Nutrient Dynamics
- Geology and Paleoclimatology Research
- Flood Risk Assessment and Management
- Archaeology and Natural History
- Water Quality and Resources Studies
- Fire effects on ecosystems
- Coastal and Marine Dynamics
- Geological formations and processes
- Aeolian processes and effects
- Peatlands and Wetlands Ecology
- Landslides and related hazards
- Tree-ring climate responses
- Fish Ecology and Management Studies
- Botany, Ecology, and Taxonomy Studies
- Ecology and biodiversity studies
- Remote Sensing and LiDAR Applications
- Forest Ecology and Biodiversity Studies
- Coastal and Marine Management
- Aquatic Invertebrate Ecology and Behavior
- Botany and Plant Ecology Studies
- Marine and fisheries research
United States Geological Survey
2013-2023
Florence Bascom Geoscience Center
2021-2022
University of Vienna
2020
United States Department of the Interior
1986
Riparian vegetation is affected by both flood processes and the characteristics of landforms that are shaped floods. In many instances, species occurrence can be linked directly to specific fluvial landforms. These spatial relationships largely due role floods in differential destruction vegetation, determination substrate characteristics, transport propagules. Major may, depending on climatic context, allow for establishment stands or restart plant community change. Disturbance also affect...
Persistent distribution patterns of woody vegetation within the bottomland forest Passage Creek, Virginia, were related to fluvial landforms, channel geometry, streamflow characteristics, and sediment—size characteristics. Vegetation determined from species presence as observed in transects traverses on landforms developed along stream. Distinct distributional found four common geomorphic landforms: depositional bar, active—channel shelf, floodplain, terrace. Independent hydrologic...
Hundreds of kilometres West Tennessee streams have been channelized since the turn century. After a stream is straightened, dredged, or cleared, basinwide ecologic, hydrologic, and geomorphic processes bring about an integrated, characteristic recovery sequence. The rapid pace channel responses to channelization provides opportunity document interpret vegetation patterns relative otherwise long—term, concomitant evolution river geomorphology. Nearly 150 sites along 15 were studied in Obion,...
Rivers of the coastal plain south-eastern USA are characteristically low-gradient meandering systems that develop broad floodplains subjected to frequent and prolonged flooding. These support a relatively unique forested wetland (bottomland hardwoods), which have received considerable ecological study, but distinctly less hydrogeomorphological study. The hydroperiod, or annual period inundation, largely controls development characteristic fluvial landforms, sediment deposition vegetation...
Net nutrient accumulation rates were measured in riverine floodplains of the Atlantic Coastal Plain Virginia, Maryland, and Delaware, USA. The located watersheds with different land use included two sites on Chickahominy River (urban), one site Mattaponi (forested), five Pocomoke (agricultural). lie along reaches natural hydrogeomorphology restricted flooding due to channelization levees. A network feldspar clay marker horizons was placed sediment surface each floodplain 3–6 years prior...
Summary 1. We propose a model of plant strategies in temperate fluvial hydrosystems that considers the hydraulic and geomorphic features control recruitment, establishment growth river floodplains. 2. The describes first how disturbance gradient grain‐size bed load affect relative proportion erosion deposition processes, frequency flood affects intensity such processes. 3. Secondly, predicts according to direct indirect effects floods (disturbances through versus associated nutrient excess...
ABSTRACT Vegetation and processes of erosion deposition are interactive. An objective this paper is to review selected studies that emphasize the interdependencies. The reviews suggest new directions for research uniting ecology geomorphology – sub‐discipline biogeomorphology. research, which recently has become vigorous, includes sources, movement, fates fluvial loads sediment, organic carbon, nutrients, contaminants, woody debris low‐energy storage sites; function biota in causing soil...
Abstract Carbon (C) standing stocks, C mass balance, and soil burial in tidal freshwater forested wetlands (TFFW) TFFW transitioning to low‐salinity marshes along the upper estuary are not typically included “blue carbon” accounting, but may represent a significant sink. Results from two salinity transects Waccamaw Savannah rivers of U.S. Atlantic Coast show that total stocks were 322–1,264 Mg C/ha among all sites, generally shifting greater storage as increased. balance inputs (litterfall,...
Abstract This review aims to synthesize the current knowledge of sediment dynamics using insights from long‐term research conducted in watershed draining Chesapeake Bay, largest estuary U.S., inform management actions restore and its watershed. The are typical many impaired watersheds estuaries around world, this synthesis is intended be relevant transferable other sediment‐impaired systems. watershed's sources, transport, delivery, impacts discussed with implications for effectively...
Research Article| September 01, 1984 Geomorphic and vegetative characteristics along three northern Virginia streams W. R. OSTERKAMP; OSTERKAMP 1U.S. Geological Survey, National Center, Reston, 22092 Search for other works by this author on: GSW Google Scholar C. HUPP Author Article Information Publisher: Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print 0016-7606 GSA Bulletin (1984) 95 (9): 1093–1101. https://doi.org/10.1130/0016-7606(1984)95<1093:GAVCAT>2.0.CO;2...
Stream habitat is characterized in the U.S. Geological Survey's National Water-Quality Assessment Program as part of an integrated physical, chemical, and biological assessment Nation's water quality. The goal stream characterization to relate other factors describe water-quality conditions. To accomplish this goal, environmental settings are described at sites selected for assessment. In addition, spatial temporal patterns examined local, regional, national levels. Although important...
The Chesapeake Bay Watershed covers 165,800 square kilometers and is supplied with water sediment from five major physiographic provinces: Appalachian Plateau, Blue Ridge, Coastal Plain, Piedmont, the Valley Ridge. Suspended-sediment loads measured in showed that Piedmont Physiographic Province has highest rates of modern (20th Century) yields, at U.S. Geological Survey streamflow-gaging stations, lowest background or geologic erosion (~10,000 years) situ beryllium-10. In agricultural...
Abstract Riparian vegetation distribution patterns and diversity relative to various fluvial geomorphic channel patterns, landforms, processes are described interpreted for selected rivers of Tuscany, Central Italy; with emphasis on evolution following human impacts. Field surveys were conducted along thirteen gauged reaches species presence, the type amount channel/riparian zone change. Inundation frequency different surfaces was determined, data analyzed using BDA (binary discriminate...
ABSTRACT Despite the abundance of large wood (LW) river studies there is still a lack understanding LW transport dynamics on low gradient rivers. This study used 290 radio frequency identification tagged (RFID) and 54 metal (aluminum) LW, to quantify percent in‐channel that moves per year what variables play role in dynamics. Aluminum tags were installed monitored in‐transit during rising limb flood, mean distance traveled by those pieces week was 13.3 kilometers (km) with maximum 72 km....