Climate Change Data Portal
| DOI | 10.1002/ece3.11379 |
| Juvenile survival of little owls decreases with snow cover | |
| Perrig, Marco; Oppel, Steffen; Tschumi, Matthias; Keil, Herbert; Naef-Daenzer, Beat; Grueebler, Martin U. | |
| 发表日期 | 2024 |
| ISSN | 2045-7758 |
| 起始页码 | 14 |
| 结束页码 | 5 |
| 卷号 | 14期号:5 |
| 英文摘要 | Global environmental changes are associated with warmer average temperatures and more extreme weather events, potentially affecting wildlife population dynamics by altering demographic processes. Extreme weather events can reduce food resources and survival in all seasons of the year. Estimates of season-specific survival probabilities are therefore crucial to understand the moderating effect of extreme events on annual mortality. Here, we analysed survival probabilities of 307 radio-tracked juvenile little owls (Athene noctua) over two-week periods from fledging to their first breeding attempt in the following spring to assess the contribution of extreme weather events. Survival probabilities were typically lowest during the first weeks after fledging in summer but were moderated by seasonal extremes in winter. The duration of snow cover in winter had a strong negative effect on survival probability, while being food supplemented during the nestling stage increased survival during the first weeks after fledging in summer and ultimately led to a larger proportion of birds surviving the first year. Overall annual survival probability over the first year varied by 34.3% between 0.117 (95% credible interval 0.052-0.223) and 0.178 (0.097-0.293) depending on the severity of the winter, and was as high as 0.233 (0.127-0.373) for food-supplemented fledglings. In years with mild winters, the season with the lowest survival was the summer post-fledging period (0.508; 0.428-0.594), but in years with extensive snow cover the winter was the season with the lowest survival (0.481; 0.337-0.626). We therefore show that extreme weather events occurring in a particular season reduced the proportion of first-year survivors. Increasing extreme weather events can moderate seasonal survival probability through altering food supply of juvenile little owls either during the nestling period or in winter, with similarly large effects on annual survival and the viability of populations. Climatic changes can affect the survival of young birds and populations. Using high-resolution telemetry, we show that annual juvenile survival of little owls can be reduced by 34% during harsh winters. Warmer winters with less snow may therefore improve juvenile survival.image |
| 英文关键词 | Bayesian mark-recapture; climate change; demography; extreme weather; natal dispersal; radio-tracking; winter mortality |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Evolutionary Biology |
| WOS类目 | Ecology ; Evolutionary Biology |
| WOS记录号 | WOS:001226977700001 |
| 来源期刊 | ECOLOGY AND EVOLUTION
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/291558 |
| 作者单位 | Swiss Ornithological Institute; University of Zurich |
| 推荐引用方式 GB/T 7714 | Perrig, Marco,Oppel, Steffen,Tschumi, Matthias,et al. Juvenile survival of little owls decreases with snow cover[J],2024,14(5). |
| APA | Perrig, Marco,Oppel, Steffen,Tschumi, Matthias,Keil, Herbert,Naef-Daenzer, Beat,&Grueebler, Martin U..(2024).Juvenile survival of little owls decreases with snow cover.ECOLOGY AND EVOLUTION,14(5). |
| MLA | Perrig, Marco,et al."Juvenile survival of little owls decreases with snow cover".ECOLOGY AND EVOLUTION 14.5(2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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