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  Effects of tree identity dominate over tree diversity on the soil microbial community structure

Scheibe, A., Steffens, C., Seven, J., Jacob, A., Hertel, D., Leuschner, C., & Gleixner, G. (2015). Effects of tree identity dominate over tree diversity on the soil microbial community structure. Soil Biology and Biochemistry, 81, 219-227. doi:10.1016/j.soilbio.2014.11.020.

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資料種別: 学術論文

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BGC2188.pdf (出版社版), 491KB
 
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BGC2188.pdf
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 作成者:
Scheibe, Andrea1, 著者           
Steffens, Christina, 著者
Seven, Jasmin, 著者
Jacob, Andreas, 著者
Hertel, Dietrich, 著者
Leuschner, Christoph, 著者
Gleixner, Gerd1, 著者           
所属:
1Molecular Biogeochemistry Group, Dr. G. Gleixner, Department Biogeochemical Processes, Prof. S. E. Trumbore, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497775              

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 要旨: This study investigated the possible effects of tree species diversity and identity on the soil microbial community in a species-rich temperate broad-leaved forest. For the first time, we separated the effects of tree identity and tree species diversity on the link between above and belowground communities in a near-natural forest. We established 100 tree clusters consisting of each three tree individuals represented by beech (Fagus sylvatica L.), ash (Fraxinus excelsior L.), hornbeam (Carpinus betulus L.), maple (Acer pseudoplatanus L.), or lime (Tilia spec.) at two different sites in the Hainich National Park (Thuringia, Germany). The tree clusters included one, two or three species forming a diversity gradient. We investigated the microbial community structure, using phospholipid fatty acid (PLFA) profiles, in mineral soil samples (0–10 cm) collected in the centre of each cluster. The lowest total PLFA amounts were found in the pure beech clusters (79.0 ± 23.5 nmol g−1 soil dw), the highest PLFA amounts existed in the pure ash clusters (287.3 ± 211.3 nmol g−1 soil dw). Using principle components analyses (PCA) and redundancy analyses (RDA), we found only for the variables ‘relative proportion of beech trees’ and ‘living lime fine root tips associated with ectomycorrhiza’ a significant effect on the PLFA composition. The microbial community structure was mainly determined by abiotic environmental parameters such as soil pH or clay content. The different species richness levels in the clusters did not significantly differ in their total PLFA amounts and their PLFA composition. We observed a tendency that the PLFA profiles of the microbial communities in more tree species-rich clusters were less influenced by individual PLFAs (more homogenous) than those from species-poor clusters. We concluded that tree species identity and site conditions were more important factors determining the soil microbial community structure than tree species diversity per se.

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 日付: 2014-11-192014-12-022015
 出版の状態: 出版
 ページ: -
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 識別子(DOI, ISBNなど): その他: BGC2188
DOI: 10.1016/j.soilbio.2014.11.020
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出版物 1

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出版物名: Soil Biology and Biochemistry
  その他 : Soil Biol. Biochem.
種別: 学術雑誌
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出版社, 出版地: Amsterdam [u.a.] : Elsevier
ページ: - 巻号: 81 通巻号: - 開始・終了ページ: 219 - 227 識別子(ISBN, ISSN, DOIなど): ISSN: 0038-0717
CoNE: https://pure.mpg.de/cone/journals/resource/954925445690