Abstract
Abstract Chemical poisoning resulted in the decimation of the rainbow trout (Salmo gairdneri) and brown trout (Salmo trutta) populations in the lower 35.6 km of Sixteenmile Creek, Montana. Immigration from untreated areas was the most important factor in initiating the recovery of yearling and 2-year-old trout populations. Repopulation of older trout depended upon recruitment from new year classes. After 4 years and three spawning periods, trout carrying capacity of the habitat was attained and the age structures reestablished. Habitat quality had a measurable effect on the carrying capacity of each study section.
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