A5020545711- Soil and Water Nutrient Dynamics
- Hydrology and Watershed Management Studies
- Isotope Analysis in Ecology
- Groundwater and Isotope Geochemistry
- Water Quality Monitoring and Analysis
- Fish Ecology and Management Studies
- Metabolomics and Mass Spectrometry Studies
- Microfluidic and Capillary Electrophoresis Applications
- Water Quality Monitoring Technologies
- Microbial Community Ecology and Physiology
- Hydrological Forecasting Using AI
- Electrochemical sensors and biosensors
- Analytical Chemistry and Sensors
- Mine drainage and remediation techniques
- Groundwater flow and contamination studies
- Oceanographic and Atmospheric Processes
- Hydrocarbon exploration and reservoir analysis
- Radioactive element chemistry and processing
- Geochemistry and Geologic Mapping
- Geochemistry and Elemental Analysis
- Smart Materials for Construction
- Marine and coastal ecosystems
- Rangeland and Wildlife Management
- Indigenous Studies and Ecology
- Freshwater macroinvertebrate diversity and ecology
Pacific Northwest National Laboratory
2020-2024
University of Minnesota
2020-2022
Manoomin, the Ojibwe word for wild rice, grows in shallow lakes and streams provides physical, spiritual, cultural sustenance as a sacred food relative Indigenous peoples across Great Lakes region of North America. Unfortunately, Manoomin has been declining due to multiple environmental stressors. In 2018, an interdisciplinary group from University Minnesota came together with natural resource managers tribes inter-tribal organizations understand within its socio-environmental context. This...
River corridor metabolomes reflect organic matter (OM) processing that drives aquatic biogeochemical cycles. Recent work highlights the power of ultrahigh-resolution mass spectrometry for understanding metabolome composition and river metabolism. However, there have been no studies on global chemogeography surface water sediment using techniques. Here, we describe a community science effort from Worldwide Hydrobiogeochemistry Observation Network Dynamic Systems (WHONDRS) consortium to...
Abstract. Understanding aquatic ecosystem metabolism involves the study of two key processes: carbon fixation via primary production and organic C mineralization as total respiration (ERtot). In streams rivers, ERtot includes in water column (ERwc) sediments (ERsed). While literature surveys suggest that ERsed is often a dominant contributor to ERtot, recent studies indicate relative influence sediment-associated processes versus can fluctuate along river continuum. Still, comprehensive...
Abstract. River corridors are fundamental components of the Earth system, and their biogeochemistry can be heavily influenced by processes in subsurface zones immediately below riverbed, referred to as hyporheic zone. Within zone, organic matter (OM) fuels microbial respiration, OM chemistry influences aerobic anaerobic biogeochemical processes. The link between respiration has been hypothesized mediated molecular diversity, whereby is predicted decrease with increasing diversity. Here we...
Figure S1.Field sites, Yakima River basin catchments sharing similar landscape characteristics and observed water column respiration rates across the basin, Washington, USA.(a) Field sites from 2021 spatial study superimposed on a map of catchment cluster analysis results.U. S. Geological Survey National Hydrography Dataset Plus Version 2.1 (NHDPlusV2.1)catchments were grouped into six classes using key biophysical hydrologic variables characterized 5 according to tree height, precipitation,...
Abstract. Aerobic respiration of organic matter is a key metabolic process influencing carbon (C) biogeochemistry in aquatic ecosystems. Anthropogenic and environmental perturbations to stream ecosystem metabolism can have deleterious effects on downstream water quality. Various features rivers also influence metabolism, including physical (e.g., discharge, light, flow regimes) chemical factors (nutrients, matter) watershed characteristics size or drainage area, land use). The relative...
Coupled abiotic and biotic processes in the hyporheic zone, where surface water groundwater mix, play a critical role biogeochemical cycling of carbon, nutrients, trace elements streams wetlands. Dynamic hydrologic conditions anthropogenic pollution can impact redox gradients response, although few studies examine resulting hydrobiogeochemical interactions generated within zone. This study examines effect flux dynamics sulfate loading on biogeochemistry riparian wetland stream system. The...
We present a system for carrying out small batch reactor oxygen consumption experiments on water and sediment samples environmental questions. In general, it provides several advantages that can help researchers achieve impactful at relatively low costs high data quality. particular, allows multiple reactors to be operated their concentrations measured simultaneously, providing throughput time-resolution data, which advantageous. Most existing literature similar batch-reactor metabolic...
Abstract. River corridors are fundamental components of the Earth system, and their biogeochemistry can be heavily influenced by processes in subsurface zones immediately below riverbed, referred to as hyporheic zone. Within zone, organic matter (OM) fuels microbial respiration, OM chemistry influences aerobic anaerobic biogeochemical processes. The link between respiration has been hypothesized mediated molecular diversity, whereby is predicted decrease with increasing diversity. Here we...
Abstract River corridor metabolomes reflect organic matter (OM) processing that drives aquatic biogeochemical cycles. Recent work highlights the power of ultrahigh-resolution mass spectrometry for understanding metabolome composition and river metabolism. However, there have been no studies on global chemogeography surface water sediment using techniques. Here, we describe a community science effort from Worldwide Hydrobiogeochemistry Observation Network Dynamic Systems (WHONDRS) consortium...
Abstract We present a system for carrying out small batch reactor microbial metabolism experiments on water and sediment samples environmental questions. In general, it provides several advantages that can help researchers achieve impactful at relatively low costs high data quality. particular, allows multiple reactors to be operated their oxygen concentrations measured simultaneously, providing throughput time-resolution data, which advantageous. Most existing literature similar...