Performance of two Picea abies (L.) Karst. stands at different stages of decline : V. Root tip and ectomycorrhiza development and their relations to above ground and soil nutrients.

Journal Article (Journal Article)

The development of root tips and apparent ectomycorrhizas was compared in the Fichtelgebirge (FRG) over one growing season in two 30-year-old Picea abies stands, both on soils derived from phyllite but showing varying symptoms of decline. Visual symptoms of tree decline reflected a lower relative and absolute mycorrhizal frequency, a lower number of ectomycorrhizas per m2 leaf area and an uneven vertical distribution of root tips and ectomycorrhizas. The number of apparent ectomycorrhizas per ground area was correlated with the amount of magnesium, calcium, and ammonium, and the pH in the free-drainage soil solution, and with the molar calcium to aluminium ratio in mineral soil extracts. The foliage concentrations of magnesium and calcium were correlated with the numbers of apparent ectomycorrhizas per m2 leaf or ground area. These observations were used to formulate testable hypotheses concerning the role of the root system and the soil environment in forest decline.

Full Text

Duke Authors

Cited Authors

  • Meyer, J; Schneider, BU; Werk, K; Oren, R; Schulze, E-D

Published Date

  • October 1988

Published In

Volume / Issue

  • 77 / 1

Start / End Page

  • 7 - 13

PubMed ID

  • 28312307

Electronic International Standard Serial Number (EISSN)

  • 1432-1939

International Standard Serial Number (ISSN)

  • 0029-8549

Digital Object Identifier (DOI)

  • 10.1007/bf00380917


  • eng