Richard D. Ledgerwood

Colonial Waterbird Predation on Juvenile Salmonids Tagged with Passive Integrated Transponders in the Columbia River Estuary: Vulnerability of Different Salmonid Species, Stocks, and Rearing Types

Ken Collis, Daniel D. Roby, David P. Craig et al. · Transactions of the American Fisheries Society · 2001 · 152 citations

Systemwide Evaluation of Avian Predation on Juvenile Salmonids from the Columbia River Based on Recoveries of Passive Integrated Transponder Tags

Allen F. Evans, Nathan J. Hostetter, Daniel D. Roby et al. · Transactions of the American Fisheries Society · 2012 · 72 citations

Aquatic Food System, Fishery Assessment, Predation Rates +8

Detection of Passive Integrated Transponder Tags from Juvenile Salmonids on Piscivorous Bird Colonies in the Columbia River Basin

Brad Ryan, John W. Ferguson, Richard D. Ledgerwood et al. · North American Journal of Fisheries Management · 2001 · 52 citations

Radar, Pit Tags, Environmental Monitoring +14

Bypass System Modification at Bonneville Dam on the Columbia River Improved the Survival of Juvenile Salmon

John W. Ferguson, Benjamin P. Sandford, R.E. Reagan et al. · Transactions of the American Fisheries Society · 2007 · 35 citations

Engineering, Water Resources, Fishery Science +11

A Surface Trawl to Detect Migrating Juvenile Salmonids Tagged with Passive Integrated Transponder Tags

Richard D. Ledgerwood, Brad Ryan, Earl M. Dawley et al. · North American Journal of Fisheries Management · 2004 · 34 citations