. Advancing knowledge of forests and rangelands : 1984 research accomplishments. Wood Research United States Bibliography; Forests and forestry Research United States Bibliography; Forest fires Research United States; Insect pests Research United States; Forest management Bibliography. Beaver Ponds Provide Rearing Habitat for Coho Salmon Small streams are primary rearing habitat for coho salmon in the Pacific Northwest and Alaska. Recent studies by the Pacific Northwest Station in Oregon and southeast Alaska have shown that natural beaver ponds in small streams provide large volumes of nutrien
. Advancing knowledge of forests and rangelands : 1984 research accomplishments. Wood Research United States Bibliography; Forests and forestry Research United States Bibliography; Forest fires Research United States; Insect pests Research United States; Forest management Bibliography. Beaver Ponds Provide Rearing Habitat for Coho Salmon Small streams are primary rearing habitat for coho salmon in the Pacific Northwest and Alaska. Recent studies by the Pacific Northwest Station in Oregon and southeast Alaska have shown that natural beaver ponds in small streams provide large volumes of nutrient-rich water and produce more and larger coho than nearby streams without beaver dams. Scientists constructed a 1-acre experi- mental pond in northwestern Oregon to simulate the complex, nutrient-rich waters of a natural beaver pond. Results showed phenomenal winter and summer growth of young coho in the pond. Coho salmon fingerlings that were introduced to the pond in October increased 2-1/2 times in length and seven times in weight by the following April, when they began their seaward migration. Some coho introduced to the pond as fry in April reached smolt size by July—9 months earlier than their stream-dwelling counterparts. This research is helping fishery managers develop similar cost-effective coho sal- mon enhancement projects in the Pacific Northwest and Artificial beaver ponds can rival productivity of natural beaver ponds. 10. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Forest Service. [Washington, D. C. ?] : U. S. Dept. of Agriculture, Forest Service
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