生態農業：農業溫室氣體減量【生命科學系/林幸助特聘教授】
| 論文篇名 | 英文：Modeling the impact of dam removal on conservation of the Formosan landlocked salmon in the context of climate change 中文： 模式模擬氣候變遷狀況下拆壩對於台灣櫻花鉤吻鮭之衝擊 |
| 期刊名稱 | AQUATIC SCIENCES |
| 發表年份,卷數,起迄頁數 | 2020, 82(1), 3 |
| 作者 | Battle, L; Chang, HY; Tzeng, CS; Lin, HJ(林幸助)* |
| DOI | 10.1007/s00027-019-0674-8 |
| 中文摘要 | 本研究分析拆壩對於台灣櫻花鈎吻鮭之保育措施，因為此魚是瀕危物種，目前僅存活於中台灣的武陵溪谷。前期研究中，我們發展年齡層矩陣預測模式去評估氣候變遷狀況下高山溪拆壩後對於鮭魚族群量之成效。本研究評估拆除其他四座攔沙壩之成效。模式分析結果建議拆壩及氣候變遷之綜合效應會降低拆壩之成效，提升氣候變遷之負面衝擊。模式預測移除七家灣溪的攔砂壩具有最佳潛力可以在2035年提升鮭魚族群量，移除支流攔沙壩之效益較小，但是卻能使鮭魚族群達成最大承載量效益。 |
| 英文摘要 | Dam removal is analyzed as a conservation strategy for the Formosan landlocked salmon Oncorhynchus masou formosanus, a critically endangered species whose last refuge is the Wuling basin in central Taiwan. In a previous study, a stochastic age-structured simulation model was developed and used to assess the effectiveness of removing four dams in increasing salmon abundance in Kaoshan Stream in the context of climate change. Three check dams remain intact in Chichiawan Stream and one of its tributaries. In this study, the model is recalibrated for these regions and simulates the removal of each of these dams. Model analysis suggests that the combined effect of dam removal and climate change decreases the effectiveness of dam removal while increasing the negative impact of climate change on abundance. A simple graphing technique is presented for comparing the predicted impact of the removal of each dam under consideration. The model predicts that removing the dam in Chichiawan Stream has the largest potential for increasing the 2035 abundance, but only under narrow conditions of climate change and effectiveness of dam removal. The potential benefit from removing one of the tributary dams is smaller, but the conditions for reaching closer to its potential are less restrictive. This type of analysis is useful for dam removal management decisions regarding habitat restoration. |
