Publication Title:
Ecology and taxonomy of Piloderma spp.: a golden indicator of old-growth forest soil legacy [Abstract]
Year:
1996
Status:
Published
Publication Type:
Abstract
H. J. Andrews Publication Number:
2437
Citation:
Smith, Jane E.; Jumpponen, Ari; Larsen, Michael J.; McKay, Donaraye. 1996. Ecology and taxonomy of Piloderma spp.: a golden indicator of old-growth forest soil legacy [Abstract]. In: First international conference on mycorrhizae; 1996 August 4-9; Berkeley, CA. [Place of publication unknown]: [Publisher name unknown]: 111.
Abstract: A golden-yellow ectomycorrhizal fungus may be animportant indicator of old-growth soil conditions inPacific Northwest forests of North America. Harvest oflate successional (old-growth) forests in the PacificNorthwest region has prompted legal challenges to forestmanagement plans resulting in the development ofecosystem management strategies. To evaluate the effectof these management strategies on biological diversity, itis essential to know the identities and communitycomposition of organisms, including ectomycorrhizalfungi, in natural and managed forest ecosystems.Frequency data for Piloderma were collected as part of alarger study to determine whether ectomycorrhizal fungalcommunities vary between successional stages of
Pseudotsuga menziesii forests. Fungal filaments ofPiloderma spp. were closely correlated with stand age ina recent fungal survey spanning 3 years, 9 forest standsand 1125 sampling points. Piloderma spp. occurred in55% of the old-growth, 6% of the rotation-age, and 2%of the young-growth plots. The potential value ofPiloderma as an indicator species brought to light the longconfusion over species concepts for this genus. A re-evaluation of the taxonomic status, based on microscopiccharacteristics of nomenclatural types and otherspecimens, suggests only two distinct species among thefour in question, P. fallax (syns. P. bicolor, P. croceum)and P. byssinum. These taxonomic views are supportedby our preliminary analysis of the internal transcribedspacer (ITS) of the nuclear ribosomal DNA fromrepresentative isolates and collections of Piloderma spp.from the United States and Sweden.
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