Claim · model-written summary
High N inputs decreased soil pH and base cation availability.
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
e0“High N inputs”
e1“decreased soil pH and base cation availability”
Title
Ectomycorrhizal Fungal Aboveground Community Change over an Atmospheric Nitrogen Deposition Gradient
E. A. Lilleskov; T. J. Fahey; G. M. Lovett Ecological Applications 2001. doi:10.2307/3060897
Other claims from this paper (15)
- Intervention effect High N inputs increased soil N availability in forests dominated by white spruce.
- Intervention effect High N inputs increased foliar N in white spruce.
- Intervention effect High N inputs decreased foliar P, Mg and K in white spruce.
- Intervention effect High N inputs increased tree growth in white spruce forests.
- Intervention effect High N inputs led to replacement of mosses by grasses.
- Observation At the six lowest N sites 144 ectomycorrhizal fungal species were encountered.
- Observation At the six highest N sites only 14 ectomycorrhizal fungal species were encountered.
- Association Total species richness declined with increasing mineral N availability in the organic horizon (1994 and 1995).
- Association Total sporocarp abundance declined with increasing mineral N availability in the organic horizon (1994 only).
- Association Nitrophobic taxa Cortinarius, Russula, Tricholoma, Lactarius and Hebeloma declined in species richness or abundance with increasing organic horizon mineral N.
- Association Sporocarp abundance of nitrophilic taxa was either not correlated or slightly positively correlated with organic horizon N availability.
- Observation Redundancy analysis identified two environmental axes that explained 62% and 7% of the variation in the EMF community.
- Observation The final model included mineral soil base cations, organic horizon mineral N and organic horizon net mineralization as environmental variables.
- Mechanism The results support the hypothesis that long-term N inputs alone may lead to loss of EMF sporocarp diversity.
- Recommendation EMF should be considered in establishing critical loads of N.