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Dam passage and fallback by chinook salmon and steelhead as determined by passive integrated transponder tags and radio tags
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2004
[PDF-16.51 MB]
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Description:Most estimates of adult passage behavior and survival have been determined by either visual fish counts or radiotelemetry for Pacific salmon Oncorhynchus spp. and steelhead O. mykiss listed under the U.S. Endangered Species Act. Radiotelemetry methods have also been the primary monitoring tool for evaluating adult salmonid fallback at dams, multiple ascents, behavior in fishways, and tributary turnoff in the Columbia and Snake River Basin. Increasingly, however, passive integrated transponder (PIT) tags are being used for adult salmonid research and monitoring because of their low cost (per tag) and extended life span, the availability of adults previously PIT tagged as juveniles, and the development and installation of PIT-tag interrogation systems in adult fishways at dams.
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Rights Information:CC0 Public Domain
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