Impact of extreme flooding on the annual survival of a riparian predator, the Brown Dipper Cinclus pallasii
Impact of extreme flooding on the annual survival of a riparian predator, the Brown Dipper Cinclus pallasii
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DOI：
10.1111/ibi.12035
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发表时间：
2013-04-01
期刊：
影响因子：
2.1
通讯作者：
Sun, Yuan-Hsun
中科院分区：
文献类型：
--
作者：
Chiu, Ming-Chih;Kuo, Mei-Hwa;Sun, Yuan-Hsun
全球气候变化的预测影响包括降水模式的改变和更多极端天气事件，导致洪水等突发性扰动的严重程度和频率增加。这些变化可能会影响激流猎物群落，从而可能通过营养联系间接影响水生和河岸捕食者。我们利用观测数据和气候数据评估了极端洪水是否影响了台湾北斗七星的明显生存。生存概率与洪水程度呈负相关，一岁鸟的生存率低于成年鸟。先前对该系统的分析表明，驱动这种模式的主要间接机制是洪水扰动对北斗七星水生无脊椎动物猎物的影响。我们的结果表明，洪水引起的猎物群落的变化有可能影响水生和邻近河岸栖息地的捕食者。这凸显了在面对未来气候不确定性时确定保护和管理目标时考虑跨生态系统联系的重要性。
The predicted effects of global climate change include altered patterns of precipitation and more extreme weather events, leading to an increase in the severity and frequency of episodic disturbances such as floods. These changes may affect lotic prey communities, which could indirectly affect aquatic and riparian predators through trophic linkages. We assessed whether extreme flooding affected the apparent survival of Brown Dippers Cinclus pallasii in Taiwan using markresighting data and climate data. The probability of survival was negatively correlated with the degree of flooding, and survival of first-year birds was lower than that of adults. Previous analyses of this system suggest that the main, indirect mechanism driving such patterns is the impact of flood disturbance on the aquatic invertebrate prey of Brown Dippers. Our results show that changes in prey communities induced by flooding have the potential to affect predators in aquatic and adjacent riparian habitats. This highlights the importance of considering cross-ecosystem linkages when identifying conservation and management goals in the face of future climate uncertainty.