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：Timing and magnitude of climatic extremes differentially elevate mortality but enhance recovery in a fish population 中文： 極端氣候的時間與程度會提升魚群死亡率但卻可強化其恢復力 |
| 期刊名稱 | Global Change Biology |
| 發表年份,卷數,起迄頁數 | 2021 |
| 作者 | Chiu, Ming-Chih; Chang, Shih-Hsun; Yen, Yu-Ting; Liao, Lin-Yan; Lin, Hsing-Juh(林幸助)* |
| DOI | 10.1111/gcb.15886 |
| 中文摘要 | 累積30年的臺灣櫻花鉤吻鮭長期資料分析，發現颱風洪水雖然會減損七家灣溪鮭魚數量，但是汰弱扶強效應，反而提升隔年鮭魚族群的恢復力，正所謂生命自會找尋出路。 |
| 英文摘要 | The countervailing effects of disturbances (e.g., high mortality and enhanced recovery) on population dynamics can occur through demographic processes under rapidly increasing climatic extremes. Across an extreme-event gradient, we mechanistically demonstrated how dramatic changes in streamflow have affected the population persistence of endangered salmon in monsoonal Taiwan over a three-decade period. Our modeling indicated that the dynamics of the age-structured population were attributed to demographic processes, in which extensive mortality was characterized as a function of climatic extremes and vulnerability in the young stage of fish. In the stochastic simulations, we found that the extensive mortality and high proportion of large fish resulted from extreme flooding, which caused high values of postimpact resilience, resistance, and population growth. Our empirical evidence suggests that the disturbance magnitudes and timing can explain the population persistence when facing climatic extremes and thereby challenges the understanding of the mechanistic drivers of these countervailing phenomena under changing environmental conditions. |
| 發表成果與本中心研究主題相關性 | 探討氣候變遷影響生物多樣性台灣櫻花鉤吻鮭族群變動之主要因素 |
