Spatial and temporal ecology of Scots pine ectomycorrhizas

Spatial analysis was used to explore the distribution of individual species in an ectomycorrhizal (ECM) fungal community to address: whether mycorrhizas of individual ECM fungal species were patchily distributed, and at what scale; and what the causes of this patchiness might be. Ectomycorrhizas wer...

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Bibliographic Details
Published in:The New phytologist 2010-05, Vol.186 (3), p.755-768
Main Authors: Pickles, Brian J., Genney, David R., Potts, Jacqueline M., Lennon, Jack J., Anderson, Ian C., Alexander, Ian J.
Format: Article
Language:English
Subjects:
Agaricales
Agriculture
Autocorrelation
Cenococcum
cluster analysis
Digital rights management
Distribution
Ecosystem
ectomycorrhizal ecology
Ectomycorrhizas
Forest ecology
Forest soils
Fungi
Geographical distribution
geostatistics
Homogeneity
Interspecific relationships
Logistic Models
Mycology
Mycorrhizae - physiology
Mycorrhizas
Patchiness
Pine trees
Pinus sylvestris
Pinus sylvestris - microbiology
Relative abundance
Soil
Soil ecology
Spatial analysis
spatial autocorrelation
Species
Statistical methods
Time Factors
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Summary:Spatial analysis was used to explore the distribution of individual species in an ectomycorrhizal (ECM) fungal community to address: whether mycorrhizas of individual ECM fungal species were patchily distributed, and at what scale; and what the causes of this patchiness might be. Ectomycorrhizas were extracted from spatially explicit samples of the surface organic horizons of a pine plantation. The number of mycorrhizas of each ECM fungal species was recorded using morphotyping combined with internal transcribed spacer (ITS) sequencing. Semivariograms, kriging and cluster analyses were used to determine both the extent and scale of spatial autocorrelation in species abundances, potential interactions between species, and change over time. The mycorrhizas of some, but not all, ECM fungal species were patchily distributed and the size of patches differed between species. The relative abundance of individual ECM fungal species and the position of patches of ectomycorrhizas changed between years. Spatial and temporal analysis revealed a dynamic ECM fungal community with many interspecific interactions taking place, despite the homogeneity of the host community. The spatial pattern of mycorrhizas was influenced by the underlying distribution of fine roots, but local root density was in turn influenced by the presence of specific fungal species.
ISSN:0028-646X
1469-8137
DOI:10.1111/j.1469-8137.2010.03204.x