Nestedness of benthic diatom metacommunity in relation to species niche width and environmental variables in a large near-natural catchment

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Frontiers in Ecology and Evolution Pub Date : 2024-05-01 DOI:10.3389/fevo.2024.1339946

Xinxin Qi, Guohao Liu, Chuanwu Chen, Yixia Wang, Yaochun Wang, Zongwei Lin, Naicheng Wu

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引用次数: 0

Abstract

Insight into the non-random distribution patterns of species in different regions is a foundational aim of research in community ecology and biogeography. The nestedness pattern, which investigates changes in species composition and abundance, has been widely used in numerous studies. However, studies on the nestedness of benthic diatoms are extremely rare, and consequently little has been mentioned of their assemblage mechanisms. To fill this gap, based on 168 benthic diatom species from 147 sampling sites in the Thousand Island Lake (TIL) catchment, we calculated their nestedness and niche width with the aim of i) analyzing the nestedness of benthic diatoms communities with different attachment abilities in TIL; ii) calculating niche width differences between nested and idiosyncratic species with different attachment abilities; iii) investigating the differences in alpha and beta diversity between nested and idiosyncratic sites; iv) examining whether environmental variables influencing the nestedness of benthic diatom communities are dependent on attachment ability. The results demonstrated a significant nestedness pattern in the benthic diatom metacommunity, and the sampling sites of low attachment species not only exhibited a nestedness pattern, but also with a lower nestedness value compared to the sampling sites of all species. Nested and idiosyncratic species differed in niche width, whereas differences between nested and idiosyncratic species of low attachment species were smaller. Additionally, significant differences in alpha and beta diversity were observed between nested and idiosyncratic sites. Furthermore, it was revealed that the nestedness of benthic diatom metacommunity in our study area were mostly influenced by local environmental variables. Our study contributes to the understanding of the significant nestedness observed in benthic diatom metacommunity in TIL, highlighting its relevance to biodiversity conservation efforts.

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近自然大型集水区底栖硅藻元群落的嵌套性与物种生态位宽度和环境变量的关系

洞察物种在不同区域的非随机分布模式是群落生态学和生物地理学研究的一个基本目标。研究物种组成和丰度变化的嵌套模式已在许多研究中得到广泛应用。然而，有关底栖硅藻嵌套性的研究却极为罕见，因此对其集合机制的研究也很少。为了填补这一空白，我们以千岛湖流域 147 个取样点的 168 种底栖硅藻为基础，计算了它们的嵌套度和生态位宽度，目的是 i) 分析千岛湖流域不同附着能力的底栖硅藻群落的嵌套度；ii）计算具有不同附着能力的嵌套物种与特异物种之间的生态位宽度差异；（iii）研究嵌套地点与特异地点之间α和β多样性的差异；（iv）研究影响底栖硅藻群落嵌套度的环境变量是否取决于附着能力。结果表明，底栖硅藻元群落存在明显的嵌套模式，低附着力物种的采样点不仅表现出嵌套模式，而且与所有物种的采样点相比，嵌套度值较低。嵌套物种和特异物种在生态位宽度上存在差异，而低附着物种的嵌套物种和特异物种之间的差异较小。此外，筑巢和特异性地点之间的阿尔法和贝塔多样性也存在显著差异。此外，研究还发现，本研究区域底栖硅藻元群落的嵌套性主要受当地环境变量的影响。我们的研究有助于理解在太湖流域底栖硅藻元群落中观察到的显著嵌套性，突出了其与生物多样性保护工作的相关性。

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来源期刊

Frontiers in Ecology and Evolution Environmental Science-Ecology

CiteScore

4.00

自引率

6.70%

发文量

1143

审稿时长

12 weeks

期刊介绍： Frontiers in Ecology and Evolution publishes rigorously peer-reviewed research across fundamental and applied sciences, to provide ecological and evolutionary insights into our natural and anthropogenic world, and how it should best be managed. Field Chief Editor Mark A. Elgar at the University of Melbourne is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics and the public worldwide. Eminent biologist and theist Theodosius Dobzhansky’s astute observation that “Nothing in biology makes sense except in the light of evolution” has arguably even broader relevance now than when it was first penned in The American Biology Teacher in 1973. One could similarly argue that not much in evolution makes sense without recourse to ecological concepts: understanding diversity — from microbial adaptations to species assemblages — requires insights from both ecological and evolutionary disciplines. Nowadays, technological developments from other fields allow us to address unprecedented ecological and evolutionary questions of astonishing detail, impressive breadth and compelling inference. The specialty sections of Frontiers in Ecology and Evolution will publish, under a single platform, contemporary, rigorous research, reviews, opinions, and commentaries that cover the spectrum of ecological and evolutionary inquiry, both fundamental and applied. Articles are peer-reviewed according to the Frontiers review guidelines, which evaluate manuscripts on objective editorial criteria. Through this unique, Frontiers platform for open-access publishing and research networking, Frontiers in Ecology and Evolution aims to provide colleagues and the broader community with ecological and evolutionary insights into our natural and anthropogenic world, and how it might best be managed.