热带高山海拔梯度上保育植物和外来入侵者之间的相互作用:生长形式很重要

IF 2.6 3区 生物学 Q2 PLANT SCIENCES
Luis D. Llambí, Aure Durbecq, Karla Cáceres-Mago, Alicia Cáceres, Lirey Ramírez, Eloy Torres, Zulay Méndez
{"title":"热带高山海拔梯度上保育植物和外来入侵者之间的相互作用:生长形式很重要","authors":"Luis D. Llambí,&nbsp;Aure Durbecq,&nbsp;Karla Cáceres-Mago,&nbsp;Alicia Cáceres,&nbsp;Lirey Ramírez,&nbsp;Eloy Torres,&nbsp;Zulay Méndez","doi":"10.1007/s00035-020-00235-6","DOIUrl":null,"url":null,"abstract":"<div><p>Conceptual models of how interactions with native species influence invasions emphasize competition, but recent evidence suggests facilitation can promote invasion in stressful environments. However, how nurse-plants with contrasting growth-forms and distribution interact with invaders remains unexplored, although it could offer insights on nurse/exotic interaction mechanisms. We asked whether shrub and cushion nurses differed in their effects on the exotic <i>Rumex acetosella</i> in sites at four elevations in the high tropical Andes (4100–4400 m), shrubs dominating the lowest sites and cushions the highest sites. During the dry season, we measured soil organic matter (SOM) and water content (SWC) under the shrub <i>Hypericum laricifolium</i>, the cushion <i>Azorella julianii,</i> and adjacent areas outside. We compared <i>Rumex</i>’s performance under each situation, measuring midday leaf temperatures (<i>T</i><sub>leaf</sub>), vapor pressure deficit (VPD), minimum water potentials (<i>Ψ</i><sub>min</sub>) and leaf nitrogen (<i>N</i><sub>leaf</sub>) and compared the number, size and proportion of fruiting ramets within sampling rings in each situation. SOM and SWC were higher at all elevations under cushions, then under shrubs and lower outside. <i>Rumex</i>’<i>s</i> density was generally reduced under shrubs but increased on cushions. However, both nurses had positive effects along the gradient on <i>Rumex</i>’s size, reproduction, water balance and <i>N</i><sub>leaf</sub>, shrubs having stronger effects on <i>T</i><sub>leaf</sub> and VPD and cushions on <i>N</i><sub>leaf</sub>. Our results indicate that alternating nurses influenced an invader’s physiological performance to different extents via contrasting effects on shading and soil resources, leading to mixed competitive/facilitative effects of shrubs on the exotic’s demography, while cushions had more consistent facilitative effects across elevations.</p></div>","PeriodicalId":51238,"journal":{"name":"Alpine Botany","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2020-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00035-020-00235-6","citationCount":"11","resultStr":"{\"title\":\"Interactions between nurse-plants and an exotic invader along a tropical alpine elevation gradient: growth-form matters\",\"authors\":\"Luis D. Llambí,&nbsp;Aure Durbecq,&nbsp;Karla Cáceres-Mago,&nbsp;Alicia Cáceres,&nbsp;Lirey Ramírez,&nbsp;Eloy Torres,&nbsp;Zulay Méndez\",\"doi\":\"10.1007/s00035-020-00235-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Conceptual models of how interactions with native species influence invasions emphasize competition, but recent evidence suggests facilitation can promote invasion in stressful environments. However, how nurse-plants with contrasting growth-forms and distribution interact with invaders remains unexplored, although it could offer insights on nurse/exotic interaction mechanisms. We asked whether shrub and cushion nurses differed in their effects on the exotic <i>Rumex acetosella</i> in sites at four elevations in the high tropical Andes (4100–4400 m), shrubs dominating the lowest sites and cushions the highest sites. During the dry season, we measured soil organic matter (SOM) and water content (SWC) under the shrub <i>Hypericum laricifolium</i>, the cushion <i>Azorella julianii,</i> and adjacent areas outside. We compared <i>Rumex</i>’s performance under each situation, measuring midday leaf temperatures (<i>T</i><sub>leaf</sub>), vapor pressure deficit (VPD), minimum water potentials (<i>Ψ</i><sub>min</sub>) and leaf nitrogen (<i>N</i><sub>leaf</sub>) and compared the number, size and proportion of fruiting ramets within sampling rings in each situation. SOM and SWC were higher at all elevations under cushions, then under shrubs and lower outside. <i>Rumex</i>’<i>s</i> density was generally reduced under shrubs but increased on cushions. However, both nurses had positive effects along the gradient on <i>Rumex</i>’s size, reproduction, water balance and <i>N</i><sub>leaf</sub>, shrubs having stronger effects on <i>T</i><sub>leaf</sub> and VPD and cushions on <i>N</i><sub>leaf</sub>. Our results indicate that alternating nurses influenced an invader’s physiological performance to different extents via contrasting effects on shading and soil resources, leading to mixed competitive/facilitative effects of shrubs on the exotic’s demography, while cushions had more consistent facilitative effects across elevations.</p></div>\",\"PeriodicalId\":51238,\"journal\":{\"name\":\"Alpine Botany\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2020-03-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1007/s00035-020-00235-6\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Alpine Botany\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00035-020-00235-6\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Alpine Botany","FirstCategoryId":"99","ListUrlMain":"https://link.springer.com/article/10.1007/s00035-020-00235-6","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 11

摘要

关于与本地物种的相互作用如何影响入侵的概念模型强调竞争,但最近的证据表明,在压力环境中,促进可以促进入侵。然而,具有不同生长形式和分布的保育植物如何与入侵者相互作用仍有待探索,尽管它可以提供关于保育/外来相互作用机制的见解。我们询问了在热带安第斯山脉(4100–4400米)的四个海拔高度的地点,灌木和垫层护士对外来的乙酰胆碱酯酶Rumex acetosella的影响是否不同,灌木占最低位置,垫层占最高位置。在旱季,我们测量了落叶金丝桃、朱柳垫和室外邻近地区的土壤有机质(SOM)和含水量(SWC)。我们比较了Rumex在每种情况下的表现,测量了正午叶片温度(Tleaf)、蒸汽压不足(VPD)、最小水势(Ψmin)和叶片氮(Nleaf),并比较了每种情况中采样环内子实体的数量、大小和比例。垫下SOM和SWC在所有海拔高度都较高,其次是灌木下,外部较低。Rumex的密度通常在灌木下降低,但在垫子上增加。然而,两位护士都对Rumex的大小、繁殖、水分平衡和Nleaf产生了积极影响,灌木对Tleaf和VPD的影响更强,对Nleaf有缓冲作用。我们的研究结果表明,交替护士通过对遮荫和土壤资源的对比效应,在不同程度上影响了入侵者的生理表现,导致灌木对外来物种种群的竞争/促进作用混合,而垫子在不同海拔地区具有更一致的促进作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Interactions between nurse-plants and an exotic invader along a tropical alpine elevation gradient: growth-form matters

Interactions between nurse-plants and an exotic invader along a tropical alpine elevation gradient: growth-form matters

Conceptual models of how interactions with native species influence invasions emphasize competition, but recent evidence suggests facilitation can promote invasion in stressful environments. However, how nurse-plants with contrasting growth-forms and distribution interact with invaders remains unexplored, although it could offer insights on nurse/exotic interaction mechanisms. We asked whether shrub and cushion nurses differed in their effects on the exotic Rumex acetosella in sites at four elevations in the high tropical Andes (4100–4400 m), shrubs dominating the lowest sites and cushions the highest sites. During the dry season, we measured soil organic matter (SOM) and water content (SWC) under the shrub Hypericum laricifolium, the cushion Azorella julianii, and adjacent areas outside. We compared Rumex’s performance under each situation, measuring midday leaf temperatures (Tleaf), vapor pressure deficit (VPD), minimum water potentials (Ψmin) and leaf nitrogen (Nleaf) and compared the number, size and proportion of fruiting ramets within sampling rings in each situation. SOM and SWC were higher at all elevations under cushions, then under shrubs and lower outside. Rumexs density was generally reduced under shrubs but increased on cushions. However, both nurses had positive effects along the gradient on Rumex’s size, reproduction, water balance and Nleaf, shrubs having stronger effects on Tleaf and VPD and cushions on Nleaf. Our results indicate that alternating nurses influenced an invader’s physiological performance to different extents via contrasting effects on shading and soil resources, leading to mixed competitive/facilitative effects of shrubs on the exotic’s demography, while cushions had more consistent facilitative effects across elevations.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Alpine Botany
Alpine Botany PLANT SCIENCES-
CiteScore
5.10
自引率
18.50%
发文量
15
审稿时长
>12 weeks
期刊介绍: Alpine Botany is an international journal providing a forum for plant science studies at high elevation with links to fungal and microbial ecology, including vegetation and flora of mountain regions worldwide.
×
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
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
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 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信