Daren M Carlisle, Ph.D.
Dr. Daren Carlisle manages the Ecological Flows Program for the Water Resources Mission Area.
Science and Products
Filter Total Items: 16
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Predicting the likelihood of altered streamflows at ungauged rivers across the conterminous United States Predicting the likelihood of altered streamflows at ungauged rivers across the conterminous United States
An approach is presented in this study to aid water-resource managers in characterizing streamflow alteration at ungauged rivers. Such approaches can be used to take advantage of the substantial amounts of biological data collected at ungauged rivers to evaluate the potential ecological consequences of altered streamflows. National-scale random forest statistical models are developed to...
Authors
Ken Eng, Daren M. Carlisle, David M. Wolock, James A. Falcone
The quality of our Nation’s waters--ecological health in the Nation's streams, 1993-2005 The quality of our Nation’s waters--ecological health in the Nation's streams, 1993-2005
This report summarizes a national assessment of the ecological health of streams done by the U.S. Geological Survey's (USGS) National Water-Quality Assessment Program (NAWQA). Healthy functioning stream ecosystems provide society with many benefits, including water purification, flood control, nutrient recycling, waste decomposition, fisheries, and aesthetics. The value to society of...
Authors
Daren M. Carlisle, Michael R. Meador, Terry M. Short, Cathy M. Tate, Martin E. Gurtz, Wade L. Bryant, James A. Falcone, Michael D. Woodside
Ecological health in the Nation's streams Ecological health in the Nation's streams
Aquatic biological communities, which are collections of organisms, are a direct measure of stream health because they indicate the ability of a stream to support life. This fact sheet highlights selected findings of a national assessment of stream health by the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS). The assessment was unique in that it...
Authors
Daren M. Carlisle, Michael D. Woodside
Predicting thermal reference conditions for USA streams and rivers Predicting thermal reference conditions for USA streams and rivers
Temperature is a primary driver of the structure and function of stream ecosystems. However, the lack of stream temperature (ST) data for the vast majority of streams and rivers severely compromises our ability to describe patterns of thermal variation among streams, test hypotheses regarding the effects of temperature on macroecological patterns, and assess the effects of altered STs on
Authors
Ryan A. Hill, Charles P. Hawkins, Daren M. Carlisle
Relations between altered stramflow variability and fish assemblages in Eastern USA streams Relations between altered stramflow variability and fish assemblages in Eastern USA streams
Although altered streamflow has been implicated as a major factor affecting fish assemblages, understanding the extent of streamflow alteration has required quantifying attributes of the natural flow regime. We used predictive models to quantify deviation from expected natural streamflow variability for streams in the eastern USA. Sites with >25% change in mean daily streamflow...
Authors
Michael R. Meador, Daren M. Carlisle
Variance partitioning of stream diatom, fish, and invertebrate indicators of biological condition Variance partitioning of stream diatom, fish, and invertebrate indicators of biological condition
Stream indicators used to make assessments of biological condition are influenced by many possible sources of variability. To examine this issue, we used multiple-year and multiple-reach diatom, fish, and invertebrate data collected from 20 least-disturbed and 46 developed stream segments between 1993 and 2004 as part of the US Geological Survey National Water Quality Assessment Program...
Authors
Robert E. Zuellig, Daren M. Carlisle, Michael R. Meador, Marina Potapova
Science and Products
Filter Total Items: 16
No Result Found
Filter Total Items: 58
Predicting the likelihood of altered streamflows at ungauged rivers across the conterminous United States Predicting the likelihood of altered streamflows at ungauged rivers across the conterminous United States
An approach is presented in this study to aid water-resource managers in characterizing streamflow alteration at ungauged rivers. Such approaches can be used to take advantage of the substantial amounts of biological data collected at ungauged rivers to evaluate the potential ecological consequences of altered streamflows. National-scale random forest statistical models are developed to...
Authors
Ken Eng, Daren M. Carlisle, David M. Wolock, James A. Falcone
The quality of our Nation’s waters--ecological health in the Nation's streams, 1993-2005 The quality of our Nation’s waters--ecological health in the Nation's streams, 1993-2005
This report summarizes a national assessment of the ecological health of streams done by the U.S. Geological Survey's (USGS) National Water-Quality Assessment Program (NAWQA). Healthy functioning stream ecosystems provide society with many benefits, including water purification, flood control, nutrient recycling, waste decomposition, fisheries, and aesthetics. The value to society of...
Authors
Daren M. Carlisle, Michael R. Meador, Terry M. Short, Cathy M. Tate, Martin E. Gurtz, Wade L. Bryant, James A. Falcone, Michael D. Woodside
Ecological health in the Nation's streams Ecological health in the Nation's streams
Aquatic biological communities, which are collections of organisms, are a direct measure of stream health because they indicate the ability of a stream to support life. This fact sheet highlights selected findings of a national assessment of stream health by the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS). The assessment was unique in that it...
Authors
Daren M. Carlisle, Michael D. Woodside
Predicting thermal reference conditions for USA streams and rivers Predicting thermal reference conditions for USA streams and rivers
Temperature is a primary driver of the structure and function of stream ecosystems. However, the lack of stream temperature (ST) data for the vast majority of streams and rivers severely compromises our ability to describe patterns of thermal variation among streams, test hypotheses regarding the effects of temperature on macroecological patterns, and assess the effects of altered STs on
Authors
Ryan A. Hill, Charles P. Hawkins, Daren M. Carlisle
Relations between altered stramflow variability and fish assemblages in Eastern USA streams Relations between altered stramflow variability and fish assemblages in Eastern USA streams
Although altered streamflow has been implicated as a major factor affecting fish assemblages, understanding the extent of streamflow alteration has required quantifying attributes of the natural flow regime. We used predictive models to quantify deviation from expected natural streamflow variability for streams in the eastern USA. Sites with >25% change in mean daily streamflow...
Authors
Michael R. Meador, Daren M. Carlisle
Variance partitioning of stream diatom, fish, and invertebrate indicators of biological condition Variance partitioning of stream diatom, fish, and invertebrate indicators of biological condition
Stream indicators used to make assessments of biological condition are influenced by many possible sources of variability. To examine this issue, we used multiple-year and multiple-reach diatom, fish, and invertebrate data collected from 20 least-disturbed and 46 developed stream segments between 1993 and 2004 as part of the US Geological Survey National Water Quality Assessment Program...
Authors
Robert E. Zuellig, Daren M. Carlisle, Michael R. Meador, Marina Potapova