TY - JOUR
T1 - Ectomycorrhizas associated with a relict population of Dryas octopetala in the Burren, western Ireland. I. Distribution of ectomycorrhizas in relation to vegetation and soil characteristics
AU - Harrington, Thomas J.
AU - Mitchell, Derek T.
PY - 2005/8
Y1 - 2005/8
N2 - The distribution of ectomycorrhizas on Dryas octopetala L in grass heaths of the 450 km2 karst region known as the Burren in Western Ireland was examined in relation to soil factors and vegetation type. Ectomycorrhizas were identified or characterised from 56 soil cores from 30 sites, and the occurrence of each ectomycorrhizal (EM) type was quantified by estimating the total length of mycorrhizal tips of each type. Soil organic matter, total nitrogen, extractable phosphorus, pH and depth were the soil factors determined. In total, 24 EM types were recorded. The EM community of Dryas roots was significantly more species-rich in one vegetation type-Hyperico-Dryadetum-than in others (Arctostaphylo-Dryadetum or Asperulo-Seslerietum). Multiple linear regression analyses indicated that soil organic matter and soil depth explained a significant portion of the variation in EM abundance, while soil organic matter and extractable phosphorus explained a significant portion of the variation in EM diversity. Canonical correspondence analysis showed that some individual EM types (e.g. Craterellus lutescens, Cenococcum geophilum, Tomentella sp., Boletus sp.) exhibited distinct soil preferences, most markedly in relation to soil organic matter, which, in this analysis, was the main significant soil variable distinguishing the three vegetation types.
AB - The distribution of ectomycorrhizas on Dryas octopetala L in grass heaths of the 450 km2 karst region known as the Burren in Western Ireland was examined in relation to soil factors and vegetation type. Ectomycorrhizas were identified or characterised from 56 soil cores from 30 sites, and the occurrence of each ectomycorrhizal (EM) type was quantified by estimating the total length of mycorrhizal tips of each type. Soil organic matter, total nitrogen, extractable phosphorus, pH and depth were the soil factors determined. In total, 24 EM types were recorded. The EM community of Dryas roots was significantly more species-rich in one vegetation type-Hyperico-Dryadetum-than in others (Arctostaphylo-Dryadetum or Asperulo-Seslerietum). Multiple linear regression analyses indicated that soil organic matter and soil depth explained a significant portion of the variation in EM abundance, while soil organic matter and extractable phosphorus explained a significant portion of the variation in EM diversity. Canonical correspondence analysis showed that some individual EM types (e.g. Craterellus lutescens, Cenococcum geophilum, Tomentella sp., Boletus sp.) exhibited distinct soil preferences, most markedly in relation to soil organic matter, which, in this analysis, was the main significant soil variable distinguishing the three vegetation types.
KW - Burren vegetation
KW - Ectomycorrhizas
KW - Soil available phosphorus
KW - Soil organic matter content
UR - http://www.scopus.com/inward/record.url?scp=23944491259&partnerID=8YFLogxK
U2 - 10.1007/s00572-005-0347-4
DO - 10.1007/s00572-005-0347-4
M3 - Article
C2 - 15726435
AN - SCOPUS:23944491259
SN - 0940-6360
VL - 15
SP - 425
EP - 433
JO - Mycorrhiza
JF - Mycorrhiza
IS - 6
ER -