Variation in processes structuring fish assemblages as inferred from metacommunity analyses: Differences between headwater and adventitious streams within a river network

IF 1.7 4区 环境科学与生态学 Q3 ECOLOGY Freshwater Science Pub Date : 2021-10-19 DOI:10.1086/717445
K. Tan, Chuancong Wang, Qiang Li, Dong Zhang, Ling Chu, Yunzhi Yan
{"title":"Variation in processes structuring fish assemblages as inferred from metacommunity analyses: Differences between headwater and adventitious streams within a river network","authors":"K. Tan, Chuancong Wang, Qiang Li, Dong Zhang, Ling Chu, Yunzhi Yan","doi":"10.1086/717445","DOIUrl":null,"url":null,"abstract":"Community assembly is generally affected by the spatial position of local patches. Examining metacommunity processes and structures in small streams with different river network positions (e.g., headwater streams in the periphery of river networks vs adventitious streams in relatively central positions) may help us better understand how spatial position influences metacommunity structuring. In this study, based on data collected from sampling 24 headwater and 15 adventitious stream sites in the Xin’an Basin, China, we examined whether and how fish metacommunity processes and structures differed between the 2 stream types. We used distanced-based redundancy analysis coupled with forward selection to assess the relative roles of environmental and spatial factors in metacommunity processes, and we applied the elements of metacommunity structure analysis, extended by using different ordinations, to identify metacommunity structures. We found that the 2 types of streams were similar in environmental heterogeneity, but fish assemblages in adventitious streams were more dissimilar to one another than were assemblages in headwater streams and had more riverine immigrants. The amount of among-stream variation in species composition was low in both stream types. In headwater streams, assemblage–environment relationships were stronger than assemblage–space relationships, but we found the opposite pattern in adventitious streams. Species turnover was strong in both headwater and adventitious streams. However, assemblages in headwater streams showed both nested and quasi-nested structures, whereas the assemblages in adventitious streams were more consistent with Clementsian structure. Our results suggest that different metacommunity processes may occur in small streams with distinct river network positions and that extended elements of metacommunity structure analysis can help identify the underlying mechanisms that produce metacommunity structure. The effect of spatial position within river networks on stream fish metacommunity structuring appears to be weak, but our analyses do imply that river immigrants can influence species composition in adventitious streams to some extent.","PeriodicalId":48926,"journal":{"name":"Freshwater Science","volume":"40 1","pages":"615 - 625"},"PeriodicalIF":1.7000,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Freshwater Science","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1086/717445","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 4

Abstract

Community assembly is generally affected by the spatial position of local patches. Examining metacommunity processes and structures in small streams with different river network positions (e.g., headwater streams in the periphery of river networks vs adventitious streams in relatively central positions) may help us better understand how spatial position influences metacommunity structuring. In this study, based on data collected from sampling 24 headwater and 15 adventitious stream sites in the Xin’an Basin, China, we examined whether and how fish metacommunity processes and structures differed between the 2 stream types. We used distanced-based redundancy analysis coupled with forward selection to assess the relative roles of environmental and spatial factors in metacommunity processes, and we applied the elements of metacommunity structure analysis, extended by using different ordinations, to identify metacommunity structures. We found that the 2 types of streams were similar in environmental heterogeneity, but fish assemblages in adventitious streams were more dissimilar to one another than were assemblages in headwater streams and had more riverine immigrants. The amount of among-stream variation in species composition was low in both stream types. In headwater streams, assemblage–environment relationships were stronger than assemblage–space relationships, but we found the opposite pattern in adventitious streams. Species turnover was strong in both headwater and adventitious streams. However, assemblages in headwater streams showed both nested and quasi-nested structures, whereas the assemblages in adventitious streams were more consistent with Clementsian structure. Our results suggest that different metacommunity processes may occur in small streams with distinct river network positions and that extended elements of metacommunity structure analysis can help identify the underlying mechanisms that produce metacommunity structure. The effect of spatial position within river networks on stream fish metacommunity structuring appears to be weak, but our analyses do imply that river immigrants can influence species composition in adventitious streams to some extent.
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
从元群落分析中推断的鱼类组合结构过程的变化:河网中源头和外来溪流之间的差异
群落聚集一般受局部斑块空间位置的影响。研究具有不同河网位置的小河流(例如,位于河网外围的源溪流与位于相对中心位置的外来溪流)中的元群落过程和结构,可以帮助我们更好地理解空间位置如何影响元群落结构。本文通过对新安盆地24个水源点和15个不定源点的采样数据,研究了两种河流类型之间的鱼类元群落过程和结构是否存在差异。采用基于距离的冗余分析和前向选择相结合的方法,评价了环境因子和空间因子在元群落过程中的相对作用,并利用元群落结构分析的元素,通过不同的排序扩展来识别元群落结构。研究发现,两种类型的河流在环境异质性上具有相似性,但外来河流中的鱼类组合差异大于源头河流,并且有更多的河流移民。两种河流类型物种组成的流间变异量均较低。在源流中,组合-环境关系强于组合-空间关系,而在外来流中则相反。源流和外来流的物种更替都很强烈。而源流的组合表现为嵌套和准嵌套构造,而外来流的组合则更符合克莱门特构造。我们的研究结果表明,不同的元群落过程可能发生在具有不同河网位置的小河流中,元群落结构分析的扩展元素有助于识别产生元群落结构的潜在机制。河网内空间位置对河流鱼类元群落结构的影响似乎很弱,但我们的分析确实表明,河流移民可以在一定程度上影响外来河流的物种组成。
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
Freshwater Science
Freshwater Science ECOLOGY-MARINE & FRESHWATER BIOLOGY
CiteScore
4.10
自引率
0.00%
发文量
49
审稿时长
6-12 weeks
期刊介绍: Freshwater Science (FWS) publishes articles that advance understanding and environmental stewardship of all types of inland aquatic ecosystems (lakes, rivers, streams, reservoirs, subterranean, and estuaries) and ecosystems at the interface between aquatic and terrestrial habitats (wetlands, riparian areas, and floodplains). The journal regularly features papers on a wide range of topics, including physical, chemical, and biological properties of lentic and lotic habitats; ecosystem processes; structure and dynamics of populations, communities, and ecosystems; ecology, systematics, and genetics of freshwater organisms, from bacteria to vertebrates; linkages between freshwater and other ecosystems and between freshwater ecology and other aquatic sciences; bioassessment, conservation, and restoration; environmental management; and new or novel methods for basic or applied research.
期刊最新文献
Effects of an annular solar eclipse on montane streamwater quality in New Mexico, USA Front Matter Benthic cyanobacterial proliferations drive anatoxin production throughout the Klamath River watershed, California, USA Environmental drivers and spatial patterns of antibiotic-resistant, enteric coliforms across a forest–urban riverscape CO2 and acidification effects on larval frog immune function, growth, and survival
×
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