National Stream & Aquatic Ecology Center
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USDA Press Releases
National Stream & Aquatic Ecology Center
Ellen E. Wohl, Daniel A. Cenderelli, Kathleen A. Dwire, Sandra E. Ryan-Burkett, Michael K. Young, Kurt D. Fausch
During the past decade, research on large in-stream wood has expanded beyond North America's Pacific Northwest to diverse environments and has shifted toward increasingly holistic perspectives that incorporate processes of wood recruitment, retention, and loss at scales from channel segments to entire watersheds. Syntheses of this rapidly expanding literature can be facilitated by agreement on primary variables and methods of measurement. In this paper we address these issues by listing the variables that....
Compiled by Gabrielle David
This bibliography contains various publications on channel incision and headcut mitigation techniques. The bibliography is based on an initial literature review of peer-reviewed journals, government documents, books, and grey literature on channel incision and headcut mitigation. Particular attention was paid to those documents that focused on 1) applying a geomorphic approach to developing techniques for the rehabilitation of incised channels and 2) mitigation techniques used to stabilize headcuts. This bibliography is a work-in-progress and will be updated periodically...
Kristin Bunte, Steven R. Abt, John P. Potyondy, and Kurt W. Swingle
Although the term ‘‘pebble count’’ is in widespread use, there is no standardized methodology used for the field application of this procedure. Each pebble count analysis is the product of several methodological choices, any of which are capable of influencing the final result. Because there are virtually countless variations on pebble count protocols, the question of how their results differ when applied to the same study reach is becoming increasingly important. This study compared three pebble count protocols...
David M. Merritt, Michael L. Scott, N. Leroy Poff, Gregor T. Auble and David A. Lytle
Theory, methods and tools for determining environmental flows for riparian vegetation: riparian vegetation-flow response guilds". The first paragraph in the summary is " Riparian vegetation composition, structure and abundance are governed to a large degree by river flow regime and flow-mediated fluvial processes. Streamflow regime exerts selective pressures on ...
N. LeRoy Poff, Julian D. Olden, David M. Merritt, and David M. Pepin
Global biodiversity in river and riparian ecosystems is generated and maintained by geographic variation in stream processes and fluvial disturbance regimes, which largely reflect regional differences in climate and geology. Extensive construction of dams...
In many salmon-bearing Pacific coast gravel-bed rivers, closure of hydroelectric dams cut off gravel supply to streambeds below. Gravel mining and changes in the post-dam flow regime further disturbed the streams, leaving them in a geomorphologically and biologically dysfunctional state. Habitat for spawning and other salmon life stages ...
David A. Lytle and David M. Merritt
Riparian cottonwood (Populus deltoides) forests form the one of the most extensive deciduous forest ecosystems in arid regions of the western United States. However, cottonwood populations are threatened by flow alteration and channel degradation caused by dams, water diversions, and groundwater pumping. We developed a ...
John Potyondy, Program Manager
The STREAM Strategic Planning Workshop was held on March 30-31, 2004 in Fort Collins, Colorado. The primary objective of the workshop was to review the National Stream Systems Technology Center (STREAM) work plan and charter with the intent of looking ahead at nationally significant emerging issues and evaluate opportunities for STREAM to address and provide relevant technology to meet anticipated needs.
J. Boone Kauffman
This report summarizes discussions from "The Workshop on Multiples Influences of Riparian/Stream Ecosystems on Fires In Western Forest Landscapes" sponsored by the Stream Systems Technology Center and held at the Center for the Management of Information, University of Arizona, Tucson AZ, March 13-15, 2001. A diverse group of 30 federal scientists, fire and natural resource mangers, and university professors convened to discuss the functional role of riparian/stream zones as they affect fire on western forest landscapes.
Lois G. Witte
This paper examines the federal government's track record in securing instream flows and protecting aquatic resources on federally reserved lands in the West, using lands administered by the Forest Service as an example.
James J. Paradiso (General Technical Report RMRS-GTR-RM-000. 1999)
This publication describes the construction and use of a cableway system. Included are figures describing parts and dimensions, installation methods, and field operation. The system provides a low-cost, safe alternative to cable cars or operation from bridges during high runoff.
This zip file only needs to be downloaded by anyone wishing to construct a traveling block cableway as described in RMRS-GTR-44. The zip file contains a full-sized set of scaled AutoCAD plans (*.dwg format) and standard graphics files (*.tif format) as described in Appendix B of the publication. File notation corresponds to the figures in the publication (e.g. file "cable04.tif" refers to Figure 4). AutoCAD software is needed to look at the *.dwg files.
Water-road interaction technology series publications (mirror from San Dimas Technology and Development Center Intranet site)
Craig N. Goodwin
Provides an overview of basic classification concepts and their application in river classification including recommendations for improving future classification systems. Originally published in American Water Resources Association, Proceedings of Specialty Conference on Wildland Hydrology, D.S. Olson and J.P. Potyondy (editors), Bozeman, Montana, June 30-July 2, 1999, pp. 229-236. Used with permission of the American Water Resources Association.