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Evidence of species interactions within an ectomycorrhizal fungal community
Author(s) -
Koide Roger T.,
Xu Bing,
Sharda Jori,
Lekberg Ylva,
Ostiguy Nancy
Publication year - 2005
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.2004.01216.x
Subject(s) - biology , abiotic component , ecology , competition (biology) , colonisation , botany , colonization
Summary• 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.