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

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.

• Publication year

  2019

• Venue

  Fungal ecology

• Publication date

  2019-08-01

• Fields of study

  Biology, Environmental Science

• Identifiers
  DOI 10.1016/J.FUNECO.2018.05.008
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• Apatite in ingrowth meshbags altered EMF community composition and increased Imleria badia abundance in the control and nitrogen plots, but not when phosphorus was added.

  Confidence 0.94

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• Soil EMF communities responded more strongly to phosphorus than to nitrogen.

  Confidence 0.93

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• EMF biomass was reduced only by combined nitrogen and phosphorus addition.

  Confidence 0.95

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• Tree growth and needle nutrient concentrations indicated phosphorus limitation in the Norway spruce forest.

  Confidence 0.96

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review

• apatite

  material, mineral

  A phosphorus-bearing mineral added to ingrowth meshbags in the experiment.

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• ectomycorrhizal fungi

  fungal group, symbiont

  Root-associated symbiotic fungi in the forest that were assessed for biomass and community composition.

  Aliases: EMF

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• emf biomass

  measurement, biomass

  The amount of ectomycorrhizal fungal material measured in the experiment.

  Aliases: ectomycorrhizal fungal biomass

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• imleria badia

  species, fungus

  An ectomycorrhizal fungal species whose abundance was tracked in the meshbag experiment.

  Aliases: Boletus badius

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• ingrowth meshbags

  sampling device, material

  Mesh bags placed in the soil to allow fungal colonization under the experimental treatments.

  Aliases: meshbags

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• needle nutrient concentrations

  measurement, plant trait

  The concentrations of nutrients measured in spruce needles as an indicator of tree nutritional status.

  Aliases: needle chemistry

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• nitrogen addition

  treatment, fertilization

  The experimental treatment that added nitrogen to the forest plots.

  Aliases: N addition, N treatment

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• norway spruce forest

  site, ecosystem

  The conifer forest site in southwest Sweden where the nutrient-addition experiment was conducted.

  Aliases: spruce forest

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• phosphorus addition

  treatment, fertilization

  The experimental treatment that added phosphorus to the forest plots.

  Aliases: P addition, P treatment

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• phosphorus limitation

  nutrient limitation, ecological state

  A state in which phosphorus availability constrains tree or ecosystem performance more than nitrogen.

  Aliases: P limitation

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• soil emf communities

  community, microbial community

  The assemblages of ectomycorrhizal fungi present in soil samples from the forest.

  Aliases: soil ectomycorrhizal communities

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review
• tree growth

  outcome, plant trait

  The growth response of the Norway spruce trees measured in the experiment.

  Aliases: growth

  박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewAK (4715169a40) review

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