A5054151642- Hydrology and Sediment Transport Processes
- Hydrology and Watershed Management Studies
- Ecology and biodiversity studies
- Botany and Plant Ecology Studies
- Fish Ecology and Management Studies
- Soil erosion and sediment transport
- Flood Risk Assessment and Management
- Integrated Water Resources Management
- Marine and coastal ecosystems
- Wildlife Ecology and Conservation
- Water Quality Monitoring and Analysis
- Aquatic Ecosystems and Phytoplankton Dynamics
- Coccidia and coccidiosis research
- Groundwater and Watershed Analysis
- Reproductive Physiology in Livestock
- Isotope Analysis in Ecology
- Hydrology and Drought Analysis
- Bird parasitology and diseases
- Marine and fisheries research
- Water Quality Monitoring Technologies
- Advanced Computational Techniques and Applications
- Geological formations and processes
- Avian ecology and behavior
United States Geological Survey
2016-2025
Idaho Water Science Center
2018-2025
Utah State University
2015-2024
University of Idaho
2018-2023
Utah Department of Natural Resources
2016
Utah Division of Wildlife Resources
2016
University of Wyoming
2016
Montana Fish, Wildlife & Parks
2016
The U.S. Geological Survey (USGS) has developed the PRObability of Streamflow PERmanence (PROSPER) model, a GIS raster-based empirical model that provides streamflow permanence probabilities (probabilistic predictions) stream channel having year-round flow for any unregulated and minimally-impaired in Pacific Northwest region, annual predictions 2004–2016 at 30-m spatial resolution based on monthly or annually updated values climatic conditions static physiographic variables associated with...
Abstract Reproduction is a critical fitness component in large herbivores. Biogeographic models predict that populations occurring at the edges of range may have compromised reproductive rates because inferior habitat peripheries. When are chronically low, ungulate lack resiliency to rebound quickly after periods environmental stress, and this effect be greatest for heat-sensitive organisms their southern limit. To assess demographic vulnerability moose (Alces alces), we studied...
Abstract National Hydrography Dataset (NHD) stream permanence classifications (SPC; perennial, intermittent, and ephemeral) are widely used for data visualization applied science, have implications resource policy management. NHD SPC were assigned using a combination of topographic field surveys interviews with local residents. However, previous studies indicate that non‐NHD, in situ streamflow observations (NNO) frequently disagree SPC. We hypothesized differences annual climate conditions...
Observations of the presence or absence surface water in streams are useful for characterizing streamflow permanence, which includes frequency, duration, and spatial extent flow rivers. Such data particularly valuable headwater streams, comprise vast majority channel length stream networks, often non-perennial, frequently most deficient. Datasets exist across multiple collection groups United States but not well aligned easy integration. Given value these data, a unified approach organizing...
Dam building by beaver (Castor spp.) slows water movement through montane valleys, increasing transient storage and the diversity of residence times. In some cases, created dam construction is correlated to changes in streamflow magnitude timing. However, total amount additional surface groundwater that dams may create (and, thus, their maximum potential impact on streamflow) has not been contextualized balance larger river basins. We estimate increases could be at 5, 25, 50, 100% modeled...
Abstract Stream ecosystems can be dramatically altered by dam‐building activities of North American beaver ( Castor canadensis ). The extent to which beavers’ ecosystem engineering alters riverscapes is driven the density, longevity, and size (i.e. height length) dams constructed. In comparison relative ubiquity on landscape, there a scarcity data describing dam heights. We collected condition damaged or intact) 500 via rapid field survey, differentiating between primary secondary...
Stream permanence classifications (i.e., perennial, intermittent, ephemeral) are a primary consideration to determine stream regulatory status in the United States (U.S.) and an important indicator of environmental conditions biodiversity. However, at present, no models or products adequately describe surface water presence for determinations. We modified Thornthwaite monthly balance model (MWBM) with flow threshold parameter estimate evaluated model’s accuracy precision more than 1.3...
The presence of year-round surface water in streams (i.e., streamflow permanence) is an important factor for identifying aquatic habitat availability, determining the regulatory status streams, managing land use change, allocating resources, and designing scientific studies. However, accurate, high resolution, dynamic prediction permanence that accounts year-to-year variability at a regional extent major gap modeling capability. Herein, we expand adapt U.S. Geological Survey (USGS)...
Algal blooms are pervasive in many freshwater environments and can pose risks to the health safety of humans other organisms. However, monitoring tracking potentially harmful often relies on in-person observations by public. Remote sensing has proven useful augmenting situ algal concentration, but hurdles hinder efficient application end users. First, numerous approaches estimate aquatic chlorophyll-a available produce inconsistent results. Second, lack quantitative limits opportunities...
Aquatic algae and cyanobacteria can impair water-quality pose risks to human animal health. Several metrics of in-situ water-quality, including chlorophyll-a, phycocyanin, turbidity, Secchi depth, phytoplankton taxonomy, hyperspectral reflectance, were collected in coordination with Sentinel-2 satellite overpasses ascertain conditions calibrate detection estimation chlorophyll-a concentration. The performance multiple indices was evaluated by comparing imagery field observations...
Abstract. Numerical models that predict channel evolution are an essential tool for investigating processes occur over timescales which render field observation intractable. The current generation of morphodynamic models, however, either oversimplify the relevant physical or, in case more physically complete codes based on computational fluid dynamics (CFD), have overheads severely restrict space–time scope their application. Here we present a new, open-source, hybrid approach seeks to...
Many data collection efforts and modeling studies have focused on providing accurate estimates of streamflow while fewer sought to identify when where surface water is present the duration presence in stream channels, hereafter referred as permanence. While physically-based hydrological models are frequently used explore how quantity may be influenced by various climatic basin characteristics at local, regional, national, global extents they less often Herein, Watershed Erosion Prediction...
Abstract The popularity of reservoirs to support sport fisheries has led the stocking species that did not co‐evolve, creating novel reservoir fish communities. In Utah, Bear Lake strain Bonneville Cutthroat Trout Oncorhynchus clarkii utah and tiger trout (female Brown Salmo trutta × male Brook Salvelinus fontinalis ) are being more frequently added a traditional regimen consisting primarily Rainbow O. mykiss . Interactions between these three predatory well understood, studies evaluating...
Abstract. Numerical models that predict channel evolution are an essential tool for investigating processes occur over timescales which render field observation intractable. The current generation of morphodynamic models, however, either oversimplify the relevant physical processes, or in case more physically-complete CFD based codes, have computational overheads restrict severely space-time scope their application. Here we present a new, open-source, hybrid approach seeks to reconcile these...