Evidence of species interactions within an ectomycorrhizal fungal community
Article first published online: 2 NOV 2004
Volume 165, Issue 1, pages 305–316, January 2005
How to Cite
Koide, R. T., Xu, B., Sharda, J., Lekberg, Y. and Ostiguy, N. (2005), Evidence of species interactions within an ectomycorrhizal fungal community. New Phytologist, 165: 305–316. doi: 10.1111/j.1469-8137.2004.01216.x
- Issue published online: 2 NOV 2004
- Article first published online: 2 NOV 2004
- Received: 9 June 2004 Accepted: 14 July 2004
- Cenococcum geophilum;
- Clavulina cinerea;
- community structure;
- competitive network;
- ectomycorrhizal fungi;
- nonrandom distribution
- • 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.