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Ectomycorrhizal community composition and function in a spruce forest transitioning between nitrogen and phosphorus limitation

Author:
  • Juan Pablo Almeida
  • Nicholas P. Rosenstock
  • Benjamin Forsmark
  • Johan Bergh
  • Håkan Wallander
Publishing year: 2018-01-01
Language: English
Publication/Series: Fungal Ecology
Document type: Journal article
Publisher: Elsevier

Abstract english

Nitrogen is the main limiting nutrient in boreal ecosystems, but studies in southwest Sweden suggest that certain forests approach phosphorus (P) limitation driven by nitrogen (N) deposition. We added N, P or N + P to a Norway spruce forest in this region, to push the system to N or P limitation. Tree growth and needle nutrient concentrations indicated that the trees are P limited. EMF biomass was reduced only by N + P additions. Soil EMF communities responded more strongly to P than to N. Addition of apatite to ingrowth meshbags altered EMF community composition and enhanced the abundance of Imleria badia in the control and N plots, but not when P was added. The ecological significance of this species is discussed. Effects on tree growth, needle chemistry, and EMF communities indicate a dynamic interaction between EMF fungi and the nutrient status of trees and soils.

Keywords

  • Ecology
  • Apatite
  • Ectomycorrhizae
  • Ergosterol
  • Nitrogen and phosphorus limitation
  • Nitrogen deposition
  • Nitrogen leaching

Other

Epub
  • ISSN: 1754-5048
Juan Pablo Almeida
E-mail: juan [dot] almeida [at] biol [dot] lu [dot] se

Doctoral student

MEMEG

E-A250

50

Research group

Microbial Ecology

Projects

 

Supervisors

Main supervisor

Håkan Wallander

Assistant supervisor

Nicholas Rosenstock