A5028418572- Aquatic Ecosystems and Phytoplankton Dynamics
- Biological Control of Invasive Species
- Coastal wetland ecosystem dynamics
- Botany, Ecology, and Taxonomy Studies
- Fish Ecology and Management Studies
- Soil and Water Nutrient Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Ecology and Vegetation Dynamics Studies
- Constructed Wetlands for Wastewater Treatment
- Hydrology and Sediment Transport Processes
- Biocrusts and Microbial Ecology
- Rangeland and Wildlife Management
- Pesticide and Herbicide Environmental Studies
- Peatlands and Wetlands Ecology
- Aquatic Invertebrate Ecology and Behavior
- Weed Control and Herbicide Applications
- Algal biology and biofuel production
- Marine and coastal ecosystems
- Water Quality and Resources Studies
- Environmental Toxicology and Ecotoxicology
- Ecology and biodiversity studies
- Marine and coastal plant biology
- Plant Physiology and Cultivation Studies
- Water Quality Monitoring Technologies
- Diatoms and Algae Research
University of California, Davis
2015-2023
California Department of Pesticide Regulation
2023
United States Department of Agriculture
2017-2022
Agricultural Research Service
2014-2022
Mississippi State University
2005-2018
Directorate of Weed Research
2017
Minnesota State University, Mankato
2002-2006
U.S. Army Engineer Research and Development Center
1999-2002
United States Army
1993-2001
Minnesota State Colleges and Universities System
2001
The abundance of epiphytic macroinvertebrates on aquatic macrophytes can be influenced by different plant architecture types. For example, dissected plants provide more substrate for foraging and cover from predators than undissected plants. Large changes in macrophyte community composition have the potential to strongly influence whole-lake macroinvertebrate if overall changes. when exotic Eurasian watermilfoil (Myriophyllum spicatum L., EWM), a plant, invades lake becomes dominant,...
SUMMARY. The macrophyte community of Lake George, New York is diverse, composing forty‐eight submersed species representing a wide range habitats, depth ranges and life‐history strategies. photosynthetic rates seven representative aquatic macrophytes were determined in laboratory studies using measurements short‐term changes oxygen concentration at eight light intensities from 0 to 1000 μmol m −2 s −1 20°C. examined were: Elodea canadensis, Myriophyllum spicatum, Potamogeton amplifolius, P....
ABSTRACT Biomass quantification techniques are widely used in research on aquatic vegetation, but less often applied to monitor vegetation or assess specific control techniques. The application of these both assessing nuisance problems, and evaluating tactics is discussed using case histories. proper methods for developing a sampling regime, locating sample points, collecting samples, analyzing data reviewed. Critical factors such as quadrat size frequency number depth. purpose biomass...
W ersal RM & M adsen JD (2011). Comparative effects of water level variations on growth characteristics Myriophyllum aquaticum. Weed Research 51 , 386–393. Summary aquaticum is a non‐native aquatic plant that has invaded range habitats in the United States and Europe. reduces native species richness at local scales, quality, habitat quality for fish wildlife impacts human uses. Despite submersed leaf form, M. not typically weed problem as increases, although little data exist describing...
Invasive aquatic vegetation (IAV) is a management challenge in the Sacramento–San Joaquin Delta and Suisun Marsh that has commanded major resource investment for 4 decades. We review history supporting science of chemical, biological, mechanical control IAV March, flowing waters outside region. Outside Delta, there significant research on lotic systems, but few studies come from tidal environments, we found no investigations at spatial scale like Delta. The efforts nascent seen marked growth...
Author(s): Ta, Jenny; Anderson, Lars W.J.; Christman, Mairgareth A.; Khanna, Shruti; Kratville, David; Madsen, John D.; Moran, Patrick J.; Viers, Joshua H. | Abstract: https://doi.org/10.15447/sfews.2017v15iss4art5 Widespread growth of invasive aquatic vegetation is a major stressor to the Sacramento-San Joaquin River Delta, region significant recreational, economic, and ecological importance. Total invaded area in Delta increasing, with risk new invasions continual threat. However, remains...
SUMMARY 1. We measured biomass and light/dark bottle productivity of macrophytes in a Wisconsin stream throughout one growing season. Except for brief period early spring when Cladophora glomerata ‐filamentous algal community was dominant, Potamogeton pectinatus the dominant macrophyte species Badfish Creek. 2. Maximum 710 g DW m −2 , with maximum above ground 620 below 120 . Annual estimated at 1435 year −1 calculated P/B 2.01. 3. In situ net production averaged 2.83g C AFDW h Net positive...