期刊
SOIL BIOLOGY & BIOCHEMISTRY
卷 121, 期 -, 页码 202-211出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2018.03.021
关键词
Community assembly; Ectomycorrhizal fungi; Quercus ilex subsp ballota (holm oak); Trace element contamination; Traits
类别
资金
- European Union [603498 - RECARE]
- Spanish Ministry of Economy and Competitiveness [CGL2014-52858-R - RESTECO]
- Spanish National Research Programme - European Union (Feder) [CGL2015-69118-C2-2-P - COEXMED-II]
- European Union's Horizon 2020 Marie Curie Individual Fellowship [708530 - DISPMIC]
- University of Sevilla
Trait-based approaches are useful tools to explain ecological assembly rules and ecosystem functioning. However, their use for soil microbiota has not been explored in depth yet. We explored trait-based functional changes of ectomycorrhizal (ECM) fungal communities associated with holm oak (Quercus ilex subsp. ballota) in a trace element contaminated area. We found a variation in ECM fungal species composition determined by soil C, Ca and trace elements; however, taxonomic diversity was not dependant on contamination level. Mean trait values of ECM fungal communities showed less rhizomorph and emanating hyphae production when increasing contamination, and the community converged towards species developing rhizomorphs less frequently. We suggest that trace elements in soils acted as the main environmental filter of trait diversity of ECM fungal communities. The effect of soil nutrients, i.e. soil C, affected the community mean trait values of emanating hyphae but did not cause a convergence in its distribution. In summary, we found a reduction in the functional diversity of ECM fungal communities due to trace element contamination with potential to affect ecosystem functioning. This finding supports the potential of trait-based approaches to assess changes in the functional diversity of soil microbial communities.
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