Published August 1960. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published April 1964. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published October 1967. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
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AUTHORS: A. A. Theisen is Assistant Professor of Soils, Oregon
State University. D. D. Evans is
Published September 1960. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published September 1966. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Identification of the factors that influence susceptibility to predation can aid in developing management strategies to recover fish populations of conservation concern. Predator-prey relationships can be influenced by numerous factors, including prey condition, prey size, and environmental conditions. We investigated these factors by using juvenile steelhead Oncorhynchus mykiss from the...
San Francisco Bay is a proposed relocation site for some of the Caspian terns Hydroprogne caspia currently nesting at the world's largest colony for the species in the Columbia River estuary and consuming salmonids listed under the U. S. Endangered Species Act (ESA). However, several runs of salmonids listed under...
Accurate assessment of specific mortality factors is vital to prioritize recovery actions for threatened and
endangered species. For decades, tag recovery methods have been used to estimate fish mortality due to avian
predation. Predation probabilities derived from fish tag recoveries on piscivorous waterbird colonies typically
reflect minimum estimates of predation...
Accurate assessment of specific mortality factors is vital to prioritize recovery actions for threatened and
endangered species. For decades, tag recovery methods have been used to estimate fish mortality due to avian
predation. Predation probabilities derived from fish tag recoveries on piscivorous waterbird colonies typically
reflect minimum estimates of predation...
Full Text:
and Wildlife,
Oregon State University, 104 Nash Hall, Corvallis, Oregon 97331, USA
DanielD. Roby
Accurate assessment of specific mortality factors is vital to prioritize recovery actions for threatened and endangered species. For decades, tag recovery methods have been used to estimate fish mortality due to avian predation. Predation probabilities derived from fish tag recoveries on piscivorous waterbird colonies typically reflect minimum estimates of predation...