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Tree species traits affect which natural enemies drive the Janzen-Connell effect in a temperate forest

A prominent tree species coexistence mechanism suggests host-specific natural enemies inhibit seedling recruitment at high conspecific density (negative conspecific density dependence). Natural-enemy-mediated conspecific density dependence affects numerous tree populations, but its strength varies s...

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Autores principales: Jia, Shihong, Wang, Xugao, Yuan, Zuoqiang, Lin, Fei, Ye, Ji, Lin, Guigang, Hao, Zhanqing, Bagchi, Robert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6962457/
https://www.ncbi.nlm.nih.gov/pubmed/31941904
http://dx.doi.org/10.1038/s41467-019-14140-y
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author Jia, Shihong
Wang, Xugao
Yuan, Zuoqiang
Lin, Fei
Ye, Ji
Lin, Guigang
Hao, Zhanqing
Bagchi, Robert
author_facet Jia, Shihong
Wang, Xugao
Yuan, Zuoqiang
Lin, Fei
Ye, Ji
Lin, Guigang
Hao, Zhanqing
Bagchi, Robert
author_sort Jia, Shihong
collection PubMed
description A prominent tree species coexistence mechanism suggests host-specific natural enemies inhibit seedling recruitment at high conspecific density (negative conspecific density dependence). Natural-enemy-mediated conspecific density dependence affects numerous tree populations, but its strength varies substantially among species. Understanding how conspecific density dependence varies with species’ traits and influences the dynamics of whole communities remains a challenge. Using a three-year manipulative community-scale experiment in a temperate forest, we show that plant-associated fungi, and to a lesser extent insect herbivores, reduce seedling recruitment and survival at high adult conspecific density. Plant-associated fungi are primarily responsible for reducing seedling recruitment near conspecific adults in ectomycorrhizal and shade-tolerant species. Insects, in contrast, primarily inhibit seedling recruitment of shade-intolerant species near conspecific adults. Our results suggest that natural enemies drive conspecific density dependence in this temperate forest and that which natural enemies are responsible depends on the mycorrhizal association and shade tolerance of tree species.
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spelling pubmed-69624572020-01-17 Tree species traits affect which natural enemies drive the Janzen-Connell effect in a temperate forest Jia, Shihong Wang, Xugao Yuan, Zuoqiang Lin, Fei Ye, Ji Lin, Guigang Hao, Zhanqing Bagchi, Robert Nat Commun Article A prominent tree species coexistence mechanism suggests host-specific natural enemies inhibit seedling recruitment at high conspecific density (negative conspecific density dependence). Natural-enemy-mediated conspecific density dependence affects numerous tree populations, but its strength varies substantially among species. Understanding how conspecific density dependence varies with species’ traits and influences the dynamics of whole communities remains a challenge. Using a three-year manipulative community-scale experiment in a temperate forest, we show that plant-associated fungi, and to a lesser extent insect herbivores, reduce seedling recruitment and survival at high adult conspecific density. Plant-associated fungi are primarily responsible for reducing seedling recruitment near conspecific adults in ectomycorrhizal and shade-tolerant species. Insects, in contrast, primarily inhibit seedling recruitment of shade-intolerant species near conspecific adults. Our results suggest that natural enemies drive conspecific density dependence in this temperate forest and that which natural enemies are responsible depends on the mycorrhizal association and shade tolerance of tree species. Nature Publishing Group UK 2020-01-15 /pmc/articles/PMC6962457/ /pubmed/31941904 http://dx.doi.org/10.1038/s41467-019-14140-y Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Jia, Shihong
Wang, Xugao
Yuan, Zuoqiang
Lin, Fei
Ye, Ji
Lin, Guigang
Hao, Zhanqing
Bagchi, Robert
Tree species traits affect which natural enemies drive the Janzen-Connell effect in a temperate forest
title Tree species traits affect which natural enemies drive the Janzen-Connell effect in a temperate forest
title_full Tree species traits affect which natural enemies drive the Janzen-Connell effect in a temperate forest
title_fullStr Tree species traits affect which natural enemies drive the Janzen-Connell effect in a temperate forest
title_full_unstemmed Tree species traits affect which natural enemies drive the Janzen-Connell effect in a temperate forest
title_short Tree species traits affect which natural enemies drive the Janzen-Connell effect in a temperate forest
title_sort tree species traits affect which natural enemies drive the janzen-connell effect in a temperate forest
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6962457/
https://www.ncbi.nlm.nih.gov/pubmed/31941904
http://dx.doi.org/10.1038/s41467-019-14140-y
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