• Publications
  • Influence
GAGES: A stream gage database for evaluating natural and altered flow conditions in the conterminous United States
Stream flow is a controlling element in the ecology of rivers and streams. Knowledge of the natural flow regime facilitates the assessment of whether specific hydrologic attributes have been altered
Revised Methods for Characterizing Stream Habitat in the National Water-Quality Assessment Program
Stream habitat is characterized in the U.S. Geological Survey’s National Water-Quality Assessment (NAWQA) Program as part of an integrated physical, chemical, and biological assessment of the
Assessing the Efficacy of Single-Pass Backpack Electrofishing to Characterize Fish Community Structure
Abstract Two-pass backpack electrofishing data collected as part of the U.S. Geological Survey's National Water-Quality Assessment Program were analyzed to assess the efficacy of single-pass backpack
Predicting the natural flow regime: models for assessing hydrological alteration in streams
Understanding the extent to which natural streamflow characteristics have been altered is an important consideration for ecological assessments of streams. Assessing hydrologic condition requires
Alteration of streamflow magnitudes and potential ecological consequences: a multiregional assessment
Human impacts on watershed hydrology are widespread in the US, but the prevalence and severity of stream-flow alteration and its potential ecological consequences have not been quantified on a
Comparisons of Fish Species Traits from Small Streams to Large Rivers
To examine the relations between fish community function and stream size, lotic freshwater fish species were classified based on multiple categories within six species traits: substrate preference, geomorphic preference, trophic ecology, locomotion morphology, reproductive strategy, and (6) stream size preference.
Biological assessments of Appalachian streams based on predictive models for fish, macroinvertebrate, and diatom assemblages
Differences between observed and predicted frequencies of occurrence for individual taxa were generally consistent with known tolerances to environmental stressors and might aid in identifying causes of biological impairment.
Methods for collecting benthic invertebrate samples as part of the National Water-Quality Assessment Program
This approach provides guidance on site, reach, and habitat selection and methods and equipment for qualitative multihabitat sampling and semi-quantitative single habitat sampling and Appropriate quality-assurance and quality-control guidelines are used to maximize the ability to analyze data within and among study units.
An assessment of the ecological impacts of inter‐basin water transfers, and their threats to river basin integrity and conservation
1. Detailed research into the ecological impacts of inter-basin water transfers (IBTs) is virtually nonexistent on a global scale. However, a growing awareness of the serious nature of such
Assessing Water Quality at Large Geographic Scales: Relations Among Land Use, Water Physicochemistry, Riparian Condition, and Fish Community Structure
The universal importance of riparian zones to the maintenance and restoration of diverse fish communities in streams is suggested, including practices that regulate the delivery of nutrients, suspended sediments, and total dissolved solids into streams.