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原文传递 Fish Passage in Montana Culverts. Phase II. Passage Goals.

题名：	Fish Passage in Montana Culverts. Phase II. Passage Goals.
作者：	cahoon, j. e. mcmahon, t. solcz, a. blank, m. stein, o.
关键词：	fishways, hydraulics, habitats, fish migration, montana, hydrology
摘要：	The primary objective of this study is to determine the rate and timing of fish passage in culverts that is desirable for species diversity maintenance. For Montana resident trout species, there appears to be conservatism in fish passage indicators that is excessive of that required for sufficient population distribution. Our goal is to use Yellowstone cutthroat trout to determine what percentage of fish attempting to pass a culvert during what percentage of key hydrologic times will provide species continuity above and below selected study culverts. / NOTE: Final rept. / Supplementary Notes: See also Preliminary Investigation, PB96-165311. Sponsored by Federal Highway Administration, Helena, MT. Montana Div. and Montana Dept. of Transportation, Helena. Research Program. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0722；64p
报告类型：	科技报告