Evidence of species interactions within an ectomycorrhizal fungal community

Ectomycorrhizal fungal communities can be structured by abiotic and biotic factors. Here, we present evidence for community structuring by species interactions. We sampled ectomycorrhizas and forest floor seven times during a 13-month period. The presence of various ectomycorrhizal fungal species wa...

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Détails bibliographiques
Publié dans:The New phytologist. - 1990. - 165(2005), 1 vom: 15. Jan., Seite 305-16
Auteur principal: Koide, Roger T (Auteur)
Autres auteurs: Xu, Bing, Sharda, Jori, Lekberg, Ylva, Ostiguy, Nancy
Format: Article
Langue:English
Publié: 2005
Accès à la collection:The New phytologist
Sujets:Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Tannins Nitrogen N762921K75
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520 |a Ectomycorrhizal fungal communities can be structured by abiotic and biotic factors. Here, we present evidence for community structuring by species interactions. We sampled ectomycorrhizas and forest floor seven times during a 13-month period. The presence of various ectomycorrhizal fungal species was determined for each sample, and species co-occurrence analyses were performed. For both ectomycorrhizas and forest floor samples there was significantly less co-occurrence among species within the community than expected by chance, mostly because of negative associations involving Cenococcum geophilum or Clavulina cinerea. For some species pairs, there was significantly more co-occurrence than expected by chance. Both nitrogen and tannin additions to the forest floor altered some interactions among species. The causes of these nonrandom distributions are currently unknown. Future investigations on competition, antibiosis, parasitism and facilitation among ectomycorrhizal fungal species appear to be warranted 
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