Spatiotemporal variation in population dynamics of a narrow endemic, Ranunculus austro-oreganus.

IF 2.4 2区 生物学 Q2 PLANT SCIENCES American Journal of Botany Pub Date : 2025-01-01 Epub Date: 2024-12-17 DOI:10.1002/ajb2.16446
Riley D Thoen, Lauren B Hendricks, Graham T Bailes, Bart R Johnson, Laurel Pfeifer-Meister, Paul B Reed, Bitty A Roy, Megan L DeMarche
{"title":"Spatiotemporal variation in population dynamics of a narrow endemic, Ranunculus austro-oreganus.","authors":"Riley D Thoen, Lauren B Hendricks, Graham T Bailes, Bart R Johnson, Laurel Pfeifer-Meister, Paul B Reed, Bitty A Roy, Megan L DeMarche","doi":"10.1002/ajb2.16446","DOIUrl":null,"url":null,"abstract":"<p><strong>Premise: </strong>Understanding how population dynamics vary in space and time is critical for understanding the basic life history and conservation needs of a species, especially for narrow endemic species whose populations are often in similar environments and therefore at increased risk of extinction under climate change. Here, we investigated the spatial and temporal variation in population dynamics of Ranunculus austro-oreganus, a perennial buttercup endemic to fragmented prairie habitat in one county in southern Oregon.</p><p><strong>Methods: </strong>We performed demographic surveys of three populations of R. austro-oreganus over 4 years (2015-2018). We used size-structured population models and life table response experiments to investigate vital rates driving spatiotemporal variation in population growth.</p><p><strong>Results: </strong>Overall, R. austro-oreganus had positive or stable stochastic population growth rates, though individual vital rates and overall population growth varied substantially among sites and years. All populations had their greatest growth in the same year, suggesting potential synchrony associated with climate conditions. Differences in survival contributed most to spatial variation in population growth, while differences in reproduction contributed most to temporal variation in population growth.</p><p><strong>Conclusions: </strong>Populations of this extremely narrow endemic appear stable, with positive growth during our study window. These results suggest that populations of R. austro-oreganus are able to persist if their habitat is not eliminated by land-use change. Nonetheless, its narrow distribution and synchronous population dynamics suggest the need for continued monitoring, particularly with ongoing habitat loss and climate change.</p>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":" ","pages":"e16446"},"PeriodicalIF":2.4000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11744433/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Journal of Botany","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1002/ajb2.16446","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/12/17 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

Premise: Understanding how population dynamics vary in space and time is critical for understanding the basic life history and conservation needs of a species, especially for narrow endemic species whose populations are often in similar environments and therefore at increased risk of extinction under climate change. Here, we investigated the spatial and temporal variation in population dynamics of Ranunculus austro-oreganus, a perennial buttercup endemic to fragmented prairie habitat in one county in southern Oregon.

Methods: We performed demographic surveys of three populations of R. austro-oreganus over 4 years (2015-2018). We used size-structured population models and life table response experiments to investigate vital rates driving spatiotemporal variation in population growth.

Results: Overall, R. austro-oreganus had positive or stable stochastic population growth rates, though individual vital rates and overall population growth varied substantially among sites and years. All populations had their greatest growth in the same year, suggesting potential synchrony associated with climate conditions. Differences in survival contributed most to spatial variation in population growth, while differences in reproduction contributed most to temporal variation in population growth.

Conclusions: Populations of this extremely narrow endemic appear stable, with positive growth during our study window. These results suggest that populations of R. austro-oreganus are able to persist if their habitat is not eliminated by land-use change. Nonetheless, its narrow distribution and synchronous population dynamics suggest the need for continued monitoring, particularly with ongoing habitat loss and climate change.

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
狭长地带特有植物 Ranunculus austro-oreganus 种群动态的时空变化。
前提:了解种群动态在空间和时间上的变化对于了解物种的基本生活史和保护需求至关重要,特别是对于那些种群经常处于相似环境中,因此在气候变化下灭绝风险增加的狭窄特有物种。本文对俄勒冈州南部一个县破碎草原特有的多年生毛茛毛茛(Ranunculus austroo -oreganus)种群动态的时空变化进行了研究。方法:对3个种群(2015-2018)进行为期4年的人口统计学调查。我们使用了规模结构的人口模型和生命表响应实验来研究驱动人口增长时空变化的生命率。结果:总体上,奥氏鼠种群的随机增长率为正或稳定,但种群的个体生命率和总体种群增长率在不同地点和年份之间存在较大差异。所有种群在同一年都有最大的增长,这表明潜在的同步性与气候条件有关。生存差异对种群增长的空间变异贡献最大,而繁殖差异对种群增长的时间变异贡献最大。结论:在我们的研究窗口期,这种极窄的地方性疾病的种群呈现稳定增长趋势。这些结果表明,如果它们的栖息地不因土地利用变化而消失,那么austroo -oreganus种群能够持续存在。尽管如此,其狭窄的分布和同步的种群动态表明需要继续监测,特别是在持续的栖息地丧失和气候变化的情况下。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
American Journal of Botany
American Journal of Botany 生物-植物科学
CiteScore
4.90
自引率
6.70%
发文量
171
审稿时长
3 months
期刊介绍: The American Journal of Botany (AJB), the flagship journal of the Botanical Society of America (BSA), publishes peer-reviewed, innovative, significant research of interest to a wide audience of plant scientists in all areas of plant biology (structure, function, development, diversity, genetics, evolution, systematics), all levels of organization (molecular to ecosystem), and all plant groups and allied organisms (cyanobacteria, algae, fungi, and lichens). AJB requires authors to frame their research questions and discuss their results in terms of major questions of plant biology. In general, papers that are too narrowly focused, purely descriptive, natural history, broad surveys, or that contain only preliminary data will not be considered.
期刊最新文献
Thermal acclimation of tree species in a tropical Andean city: Exploring the role of species origin and thermal niche. Symbiotic fungi alter plant resource allocation independent of water availability. qPCR-based quantification reveals high plant host-specificity of endophytic colonization levels in leaves. Spatiotemporal variation in population dynamics of a narrow endemic, Ranunculus austro-oreganus. The memory of past water abundance shapes trees 7 years later.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1