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| DOI | 10.1086/729466 |
| Stage-Specific Demographic Effects of Hydrologic Variation in a Stream Salamander | |
| 发表日期 | 2024 |
| ISSN | 0003-0147 |
| EISSN | 1537-5323 |
| 起始页码 | 203 |
| 结束页码 | 5 |
| 卷号 | 203期号:5 |
| 英文摘要 | We lack a strong understanding of how organisms with complex life histories respond to climate variation. Many stream-associated species have multistage life histories that are likely to influence the demographic consequences of floods and droughts. However, tracking stage-specific demographic responses requires high-resolution, long-term data that are rare. We used 8 years of capture-recapture data for the headwater stream salamander Gyrinophilus porphyriticus to quantify the effects of flooding and drying magnitude on stage-specific vital rates and population growth. Drying reduced larval recruitment but increased the probability of metamorphosis (i.e., adult recruitment). Flooding reduced adult recruitment but had no effect on larval recruitment. Larval and adult survival declined with flooding but were unaffected by drying. Annual population growth rates (lambda) declined with flooding and drying. Lambda also declined over the study period (2012-2021), although mean lambda was 1.0 over this period. Our results indicate that G. porphyriticus populations are resilient to hydrologic variation because of compensatory effects on recruitment of larvae versus adults (i.e., reproduction vs. metamorphosis). Complex life cycles may enable this resilience to climate variation by creating opportunities for compensatory demographic responses across stages. However, more frequent and intense hydrologic variation in the latter half of this study contributed to a decline in lambda over time, suggesting that increasing environmental variability poses a threat even when demographic compensation occurs. |
| 英文关键词 | climate change; complex life cycle; demographic compensation; Gyrinophilus porphyriticus; recruitment; survival |
| 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:001194474000001 |
| 来源期刊 | AMERICAN NATURALIST
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/288792 |
| 作者单位 | University of Montana System; University of Montana; University of Wyoming; Montana State University System; Montana State University Bozeman |
| 推荐引用方式 GB/T 7714 | . Stage-Specific Demographic Effects of Hydrologic Variation in a Stream Salamander[J],2024,203(5). |
| APA | (2024).Stage-Specific Demographic Effects of Hydrologic Variation in a Stream Salamander.AMERICAN NATURALIST,203(5). |
| MLA | "Stage-Specific Demographic Effects of Hydrologic Variation in a Stream Salamander".AMERICAN NATURALIST 203.5(2024). |
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