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Spawning and Seasonal Distribution of Adult Steelhead in the Kasilof River Watershed, Alaska, 2007 and 2008
| 题名： | Spawning and Seasonal Distribution of Adult Steelhead in the Kasilof River Watershed, Alaska, 2007 and 2008 |
| 作者： | Gates, K. S. |
| 关键词： | Fisheries##Spawning##Seasonal distribution##Fish management##Radio telemetry##Fish tagging##Monitoring##Watersheds##Kasilof River##Alaska## |
| 摘要： | Radio telemetry was used to monitor the movements of 79 adult steelhead Oncorhynchus mykiss in the Kasilof River watershed from October 2007 to June 2008. Steelhead were radio-tagged between river kilometer 10 and 24 and tracked throughout the watershed using fixed receiver stations, boats, and fixed-wing aircraft. Sixty-eight percent (N=54) of the radio-tagged steelhead spawned in tributaries or the mainstem Kasilof River. Tributaries selected by radio-tagged steelhead included Coal, Crooked, Nikolai, and Indian creeks. The remaining 25 radio-tagged steelhead were classified as Dead/Expelled (N=14), Back-out (N=6), or Non-spawner (N=5). The seasonal distribution and movements of radio-tagged steelhead were described by dividing the watershed into five regions: the estuary, river, outlet, lake, and tributaries. Distribution varied as fish moved among regions throughout the study period. |
| 总页数： | 26 |
| 报告类型： | 科技报告 |
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