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Changes in bud bank and their correlation with plant community composition in degraded alpine meadows

Bud banks are considered a crucial factor in regulating the species composition of grassland communities and maintaining the ecological function of alpine grasslands. However, few studies have paid attention to the dynamic changes of bud banks from undisturbed to severely degraded alpine meadows. Th...

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Autores principales: Li, Yuan, Bao, Gensheng, Zhang, Peng, Feng, Xiaoyun, Ma, Jingjuan, Lu, Hainian, Shi, Hongxiao, Wei, Xiaoxing, Tang, Bingming, Liu, Kai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613031/
https://www.ncbi.nlm.nih.gov/pubmed/37900741
http://dx.doi.org/10.3389/fpls.2023.1259340
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author Li, Yuan
Bao, Gensheng
Zhang, Peng
Feng, Xiaoyun
Ma, Jingjuan
Lu, Hainian
Shi, Hongxiao
Wei, Xiaoxing
Tang, Bingming
Liu, Kai
author_facet Li, Yuan
Bao, Gensheng
Zhang, Peng
Feng, Xiaoyun
Ma, Jingjuan
Lu, Hainian
Shi, Hongxiao
Wei, Xiaoxing
Tang, Bingming
Liu, Kai
author_sort Li, Yuan
collection PubMed
description Bud banks are considered a crucial factor in regulating the species composition of grassland communities and maintaining the ecological function of alpine grasslands. However, few studies have paid attention to the dynamic changes of bud banks from undisturbed to severely degraded alpine meadows. Therefore, this study examined the correlations between plant diversity and bud bank traits at different stages of alpine meadows degradation. Grass biomasses and plant diversity were found to be highest in moderately degraded meadows, and sedge biomasses were highest in lightly degraded meadows. Lack of disturbance and moderate disturbance by herbivores increased the bud bank density of alpine meadows. Consistent with the changes in bud bank density, bud bank diversity was highest in undisturbed meadows. The structural equation model indicated that the densities of rhizome and the densities and diversities of tiller buds play crucial roles in facilitating the greater diversity of the plant community. Our findings suggest that the diversities and densities of rhizome and tiller buds in the degradation stages are synchronized with changes in plant diversity, and in the regenerative ability of bud banks, which largely determine the outcome of restoration in degraded meadows. These findings could provide a frame of reference for effectively restoring degraded alpine regions by regenerating bud banks. The potential driving force and renewal capacity of bud banks should be taken into account in restoring the Qinghai-Tibet Plateau’s degraded meadow.
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spelling pubmed-106130312023-10-29 Changes in bud bank and their correlation with plant community composition in degraded alpine meadows Li, Yuan Bao, Gensheng Zhang, Peng Feng, Xiaoyun Ma, Jingjuan Lu, Hainian Shi, Hongxiao Wei, Xiaoxing Tang, Bingming Liu, Kai Front Plant Sci Plant Science Bud banks are considered a crucial factor in regulating the species composition of grassland communities and maintaining the ecological function of alpine grasslands. However, few studies have paid attention to the dynamic changes of bud banks from undisturbed to severely degraded alpine meadows. Therefore, this study examined the correlations between plant diversity and bud bank traits at different stages of alpine meadows degradation. Grass biomasses and plant diversity were found to be highest in moderately degraded meadows, and sedge biomasses were highest in lightly degraded meadows. Lack of disturbance and moderate disturbance by herbivores increased the bud bank density of alpine meadows. Consistent with the changes in bud bank density, bud bank diversity was highest in undisturbed meadows. The structural equation model indicated that the densities of rhizome and the densities and diversities of tiller buds play crucial roles in facilitating the greater diversity of the plant community. Our findings suggest that the diversities and densities of rhizome and tiller buds in the degradation stages are synchronized with changes in plant diversity, and in the regenerative ability of bud banks, which largely determine the outcome of restoration in degraded meadows. These findings could provide a frame of reference for effectively restoring degraded alpine regions by regenerating bud banks. The potential driving force and renewal capacity of bud banks should be taken into account in restoring the Qinghai-Tibet Plateau’s degraded meadow. Frontiers Media S.A. 2023-10-13 /pmc/articles/PMC10613031/ /pubmed/37900741 http://dx.doi.org/10.3389/fpls.2023.1259340 Text en Copyright © 2023 Li, Bao, Zhang, Feng, Ma, Lu, Shi, Wei, Tang and Liu https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Li, Yuan
Bao, Gensheng
Zhang, Peng
Feng, Xiaoyun
Ma, Jingjuan
Lu, Hainian
Shi, Hongxiao
Wei, Xiaoxing
Tang, Bingming
Liu, Kai
Changes in bud bank and their correlation with plant community composition in degraded alpine meadows
title Changes in bud bank and their correlation with plant community composition in degraded alpine meadows
title_full Changes in bud bank and their correlation with plant community composition in degraded alpine meadows
title_fullStr Changes in bud bank and their correlation with plant community composition in degraded alpine meadows
title_full_unstemmed Changes in bud bank and their correlation with plant community composition in degraded alpine meadows
title_short Changes in bud bank and their correlation with plant community composition in degraded alpine meadows
title_sort changes in bud bank and their correlation with plant community composition in degraded alpine meadows
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613031/
https://www.ncbi.nlm.nih.gov/pubmed/37900741
http://dx.doi.org/10.3389/fpls.2023.1259340
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