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

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

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.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Swedish University of Agricultural Sciences, Umeå
  • Linnaeus University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Ekologi

Nyckelord

Originalspråkengelska
Sidor (från-till)20-31
Antal sidor12
TidskriftFungal Ecology
Volym40
Tidigt onlinedatum2018 jan 1
StatusPublished - 2019
PublikationskategoriForskning
Peer review utfördJa