Bacterial and fungal communities exhibit contrasting assembly processes during native bamboo expansion through coupled vegetation-soil modifications across elevation gradients
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Le résumé fourni par la source
Effects of native species expansion on microbial assembly processes remain unquantified. While such expansions alter vegetation-soil systems, the role of edaphic factors such as pH, ionic composition, and nutrient dynamics in shaping microbial responses is unknown. Here, we examined how moso bamboo ( Phyllostachys edulis ) expansion influences microbial communities by studying a natural transition gradient (from pure bamboo to non-expanded forests) across four elevational sites (358-1176 m) in subtropical China. Through high-throughput sequencing in both topsoil (0-20 cm) and subsoil (20-40 cm) layers, we found that bacterial communities showed stronger responses to expansion than fungal communities across both soil depths. Homogeneous selection dominated bacterial assembly in both topsoil (60.60-66.67%) and subsoil (50.00-95.45%), while fungal communities exhibited stochastic patterns driven by dispersal limitation (topsoil: 60.61-81.82%; subsoil: 48.48-63.64%). These contrasting patterns reflect bamboo's uniform conditions filtering resource-responsive bacteria deterministically, whereas fungal hyphal networks maintain stochastic dispersal across environmental gradients. Network analysis revealed that bamboo expansion increased bacterial network complexity while simplifying fungal networks. Soil properties, particularly pH and base cations, emerged as key drivers of community composition, explaining up to 34.73% of bacterial and 25.23% of fungal community variation in topsoil, with similar patterns in subsoil. Notably, fungal communities exhibited stronger associations with geographic distance and elevation gradients than bacteria, highlighting their greater sensitivity to spatial and climatic factors. These findings reveal how native species expansion reshapes soil microbial communities through coupled vegetation-soil modifications, providing crucial insights for predicting ecosystem responses to vegetation change.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Bacterial and fungal communities exhibit contrasting assembly processes during native bamboo expansion through coupled vegetation-soil modifications across elevation gradients
- Date Crossref
- 01/10/2025
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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International Bamboo and Rattan Organization pays non établi dans la noticeOrganisme public
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International Center for Bamboo and Rattan pays non établi dans la noticeStructure de recherche
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Shanghai Chenshan Plant Science Research Center pays non établi dans la noticeOrganisation à but non lucratif
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Hainan University pays non établi dans la noticeUniversité ou école supérieure
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Department of Ecology and Environment of Hainan Province pays non établi dans la noticeOrganisme public
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Jinggangshan University pays non établi dans la noticeUniversité ou école supérieure
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Jiangxi Academy of Forestry pays non établi dans la noticeUniversité ou école supérieure
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Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology pays non établi dans la noticeStructure de recherche
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Eastern China Conservation Centre for Wild Endangered Plant Resources pays non établi dans la noticeInstitution
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School of Ecology pays non établi dans la noticeUniversité ou école supérieure
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Jinggangshan Bamboo Forest Ecosystem Research Station pays non établi dans la noticeInstitution
International Bamboo and Rattan Organization, International Center for Bamboo and Rattan et Shanghai Chenshan Plant Science Research Center, avec 8 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.