Water depth modulates the species richness–biomass relationship in submerged macrophytes

The effect of biodiversity on ecosystem productivity has been a controversial issue in ecological research. The species richness–productivity relationship is highly variable in natural ecosystems, with a positive relationship being one of the most commonly observed relationships. Previous regional s...

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Main Authors: Zihao Wen, Hao Wang, Hang Shan, Yu Cao, Lu Tan, Tianshun Zhu, Qinghua Cai, Leyi Ni, Xiaolin Zhang, Qingchuan Chou, Te Cao
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-05-01
Series:Frontiers in Environmental Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fenvs.2023.1115119/full
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author Zihao Wen
Zihao Wen
Hao Wang
Hao Wang
Hang Shan
Hang Shan
Yu Cao
Lu Tan
Tianshun Zhu
Qinghua Cai
Leyi Ni
Xiaolin Zhang
Qingchuan Chou
Te Cao
author_facet Zihao Wen
Zihao Wen
Hao Wang
Hao Wang
Hang Shan
Hang Shan
Yu Cao
Lu Tan
Tianshun Zhu
Qinghua Cai
Leyi Ni
Xiaolin Zhang
Qingchuan Chou
Te Cao
author_sort Zihao Wen
collection DOAJ
description The effect of biodiversity on ecosystem productivity has been a controversial issue in ecological research. The species richness–productivity relationship is highly variable in natural ecosystems, with a positive relationship being one of the most commonly observed relationships. Previous regional studies from terrestrial ecosystems have demonstrated that environmental gradients can regulate the species richness–productivity relationship. However, how this relationship varies in freshwater ecosystems across spatial environment gradients remains unclear. In this study, we propose that the species richness–productivity relationship can be modulated by the water depth. Here, we surveyed the submerged macrophyte community structure by establishing 24 transects and 642 quadrats in Erhai Lake, Yunnan Plateau, China. Our findings highlight that the species richness–productivity relationship gradually changed from slightly positive to strongly positive as the environment became more light-limited with the increasing water depth, supporting the stress-gradient hypothesis. The results from this study provide new insights into the biodiversity–ecosystem functioning relationships and in managing lake macrophyte communities and productivity.
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spelling doaj.art-2d354d0851a74da19565126fea1964c72023-05-09T05:30:08ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2023-05-011110.3389/fenvs.2023.11151191115119Water depth modulates the species richness–biomass relationship in submerged macrophytesZihao Wen0Zihao Wen1Hao Wang2Hao Wang3Hang Shan4Hang Shan5Yu Cao6Lu Tan7Tianshun Zhu8Qinghua Cai9Leyi Ni10Xiaolin Zhang11Qingchuan Chou12Te Cao13State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Aquatic Botany and Watershed Ecology, Chinese Academy of Sciences, Wuhan, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaCollege of Life Sciences, Zaozhuang University, Zaozhuang, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, ChinaThe effect of biodiversity on ecosystem productivity has been a controversial issue in ecological research. The species richness–productivity relationship is highly variable in natural ecosystems, with a positive relationship being one of the most commonly observed relationships. Previous regional studies from terrestrial ecosystems have demonstrated that environmental gradients can regulate the species richness–productivity relationship. However, how this relationship varies in freshwater ecosystems across spatial environment gradients remains unclear. In this study, we propose that the species richness–productivity relationship can be modulated by the water depth. Here, we surveyed the submerged macrophyte community structure by establishing 24 transects and 642 quadrats in Erhai Lake, Yunnan Plateau, China. Our findings highlight that the species richness–productivity relationship gradually changed from slightly positive to strongly positive as the environment became more light-limited with the increasing water depth, supporting the stress-gradient hypothesis. The results from this study provide new insights into the biodiversity–ecosystem functioning relationships and in managing lake macrophyte communities and productivity.https://www.frontiersin.org/articles/10.3389/fenvs.2023.1115119/fullwater depthsubmerged macrophytebiodiversity–ecosystem functioning relationshipstress-gradient hypothesisspecies richness–biomass relationship
spellingShingle Zihao Wen
Zihao Wen
Hao Wang
Hao Wang
Hang Shan
Hang Shan
Yu Cao
Lu Tan
Tianshun Zhu
Qinghua Cai
Leyi Ni
Xiaolin Zhang
Qingchuan Chou
Te Cao
Water depth modulates the species richness–biomass relationship in submerged macrophytes
Frontiers in Environmental Science
water depth
submerged macrophyte
biodiversity–ecosystem functioning relationship
stress-gradient hypothesis
species richness–biomass relationship
title Water depth modulates the species richness–biomass relationship in submerged macrophytes
title_full Water depth modulates the species richness–biomass relationship in submerged macrophytes
title_fullStr Water depth modulates the species richness–biomass relationship in submerged macrophytes
title_full_unstemmed Water depth modulates the species richness–biomass relationship in submerged macrophytes
title_short Water depth modulates the species richness–biomass relationship in submerged macrophytes
title_sort water depth modulates the species richness biomass relationship in submerged macrophytes
topic water depth
submerged macrophyte
biodiversity–ecosystem functioning relationship
stress-gradient hypothesis
species richness–biomass relationship
url https://www.frontiersin.org/articles/10.3389/fenvs.2023.1115119/full
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