頁籤選單縮合
題 名 | 以無線電量測系統探討池堰式魚道中臺灣石扝之溯游行為=Investigating the Upstream Migration of Acrossocheilus Formosanus in Pool-Weir Type Fishway by a Telemetry System |
---|---|
作 者 | 吳富春; 鄭武慎; | 書刊名 | 農業工程學報 |
卷 期 | 45:2 1999.06[民88.06] |
頁 次 | 頁75-86 |
分類號 | 439.19 |
關鍵詞 | 無線電量測系統; 池堰式魚道; 溯游; 潛孔; 隔板; 突進泳速; Telemetry system; Pool-weir type fishway; Upstream migration; Orifice; Baffle; Burst swimming speed; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究利用無線電量測系統探討臺灣石�a在池堰式魚道中之溯游行為模式。 在 實驗進行過程中,裝設在魚隻身上之發報器發出無線電訊號,經由水中天線、訊號接收器及 數位頻譜處理器接收及轉換後,其資料可用以監測魚隻所在位置、泳速及加速度之變化情況 。本研究為進一步提高資料之正確性及可信度,乃發展一套篩選資料之步驟流程,以排除雜 訊亂碼及不合理之訊號。經由實驗觀察發現臺灣石�a大多利用潛孔快速通過隔板,本研究分 析結果顯示臺灣石�a之最大突進泳速在 1.5m/s 以上,最大加速度超過 14cm/S �插A魚隻之 最大泳速及加速度除與魚隻體長有關外,亦受流量(流況)之影響。水池中靠近下游隔板之 緩流區為魚隻休息區域,靠近上游隔板之跌水渦流區為魚隻上溯之最大阻礙,介於兩者之間 區域為魚隻加速區,魚隻若能加速並維持適當泳速,則可達成溯游之目的。 |
英文摘要 | This study uses a telemetry system to investigate the upstream migration of Acrossocheilus formosanus in the pool-weir type fishway with an orifice on the baffle. The transmitter installed on the testing fish transmits radio signals that can be received by underwater antenna and transformed into readable data by digital spectrum processor. The processed data can be used to monitor the movement of testing fish and investigate the variations of swimming speed and acceleration. To improve the accuracy of data, we develop procedures for data screening. The erroneous and unreasonable signals can be eliminated through such procedures. It was observed in the experiments that the testing fish tends to pass the baffle through orifice. The experimental results indicate that the burst swimming speed of the testing fish is greater than 1.5 m/s; the maximum acceleration exceeds 14cm/s ��. The burst swimming speed and maximum acceleration not only vary with body length, but also are influenced by flowrate. The mild-flow region near downstream baffle is the resting area for fish, whereas the free overfall at upstream baffle and the nappe-induced vortex region is the major obstacle for upstream migration. The accelerating area is between the mild-flow and vortex regions. The testing fish can migrate to the upstream pool if proper acceleration and swimming speed are maintained. |
本系統中英文摘要資訊取自各篇刊載內容。