The mechanism of species coexistence and diversity maintenance along aspects in the northeast of the Qinghai-Tibetan plateau

IF 1.2 4区 环境科学与生态学 Q4 ECOLOGY Rangeland Journal Pub Date : 2021-07-05 DOI:10.1071/rj20042
Minxia Liu, Xinyu Wang, Yibo Ma, Lu Xu
{"title":"The mechanism of species coexistence and diversity maintenance along aspects in the northeast of the Qinghai-Tibetan plateau","authors":"Minxia Liu, Xinyu Wang, Yibo Ma, Lu Xu","doi":"10.1071/rj20042","DOIUrl":null,"url":null,"abstract":"To examine the role of plant functional traits and phylogenetic relationships in predicting plant community species coexistence and diversity maintenance, we measured 73 species and six functional traits along a slope aspect gradient on the Qinghai-Tibetan plateau. We calculated the net relatedness index (NRI), the nearest taxon index (NTI), phylogenetic diversity (PD), functional diversity, and analysed phylogenetic signals. The results show that the species richness, plant composition, and PD changed substantially from northern to southern aspects, and the phylogenetic structure of the community changed from clustering to over-dispersion. Weak phylogenetic signals in plant height, leaf nitrogen content, and leaf potassium content were recorded. We conclude that the influencing factor(s) of species coexistence on northern and north-western aspects is limiting similarity (interspecific competition), whereas on southern and south-western aspects, habitat filtering (environmental effect) is predominant. On western aspects, the influencing factors are driven by three processes: limiting similarity, habitat filtration, and random processes. Results suggest that niche processes (including habitat filtration and limiting similarity) are the main mechanisms for species coexistence and diversity maintenance on aspects of the alpine meadow in the northeast of the Qinghai-Tibetan plateau, while random processes appear at the transitional zone (the western aspect in our study) between aspects.","PeriodicalId":20810,"journal":{"name":"Rangeland Journal","volume":" ","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2021-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rangeland Journal","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1071/rj20042","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 1

Abstract

To examine the role of plant functional traits and phylogenetic relationships in predicting plant community species coexistence and diversity maintenance, we measured 73 species and six functional traits along a slope aspect gradient on the Qinghai-Tibetan plateau. We calculated the net relatedness index (NRI), the nearest taxon index (NTI), phylogenetic diversity (PD), functional diversity, and analysed phylogenetic signals. The results show that the species richness, plant composition, and PD changed substantially from northern to southern aspects, and the phylogenetic structure of the community changed from clustering to over-dispersion. Weak phylogenetic signals in plant height, leaf nitrogen content, and leaf potassium content were recorded. We conclude that the influencing factor(s) of species coexistence on northern and north-western aspects is limiting similarity (interspecific competition), whereas on southern and south-western aspects, habitat filtering (environmental effect) is predominant. On western aspects, the influencing factors are driven by three processes: limiting similarity, habitat filtration, and random processes. Results suggest that niche processes (including habitat filtration and limiting similarity) are the main mechanisms for species coexistence and diversity maintenance on aspects of the alpine meadow in the northeast of the Qinghai-Tibetan plateau, while random processes appear at the transitional zone (the western aspect in our study) between aspects.
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
青藏高原东北部各向异性物种共存与多样性维持机制
为了检验植物功能性状和系统发育关系在预测植物群落物种共存和多样性维持中的作用,我们在青藏高原的一个坡向梯度上测量了73个物种和6个功能性状。我们计算了网络相关度指数(NRI)、最近分类单元指数(NTI)、系统发育多样性(PD)、功能多样性,并分析了系统发育信号。结果表明,群落的物种丰富度、植物组成和PD由北向南发生了显著变化,群落的系统发育结构由聚类向过度分散转变。植株高度、叶片氮含量和叶片钾含量的系统发育信号较弱。我们得出的结论是,在北部和西北部,物种共存的影响因素是限制相似性(种间竞争),而在南部和西南部,栖息地过滤(环境效应)占主导地位。在西方方面,影响因素由三个过程驱动:限制相似性、栖息地过滤和随机过程。结果表明,生态位过程(包括生境过滤和限制相似性)是青藏高原东北部高寒草甸各方面物种共存和多样性维持的主要机制,而在各方面之间的过渡带(本研究中的西部方面)出现了随机过程。
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
Rangeland Journal
Rangeland Journal 环境科学-生态学
CiteScore
2.90
自引率
8.30%
发文量
14
审稿时长
>36 weeks
期刊介绍: The Rangeland Journal publishes original work that makes a significant contribution to understanding the biophysical, social, cultural, economic, and policy influences affecting rangeland use and management throughout the world. Rangelands are defined broadly and include all those environments where natural ecological processes predominate, and where values and benefits are based primarily on natural resources. Articles may present the results of original research, contributions to theory or new conclusions reached from the review of a topic. Their structure need not conform to that of standard scientific articles but writing style must be clear and concise. All material presented must be well documented, critically analysed and objectively presented. All papers are peer-reviewed. The Rangeland Journal is published on behalf of the Australian Rangeland Society.
期刊最新文献
Managing grazing to increase ground cover in rangelands: using remote sensing to detect change Low-emission beef production in the Southern Rangelands of Western Australia: an analysis of herd structure and stocking rate experiencing droughts Evolving nature-based solutions for Australia’s Indigenous estate in 2024 – opportunities and challenges Carbon farming co-benefits: a review of concepts, policy and potential in Australian landscapes The importance of camel (Camelus dromedaries) in the livelihoods of herders: the case of camel herders’ households in peri-urban N’Djamena and pastoral Fitri, Chad
×
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