Claim · model-written summary
Nitrogen addition increased nitrate and ammonium nitrogen in lysimeter water.
- Taxon
- Alpine Grasslandt0
- Treatment
- addition of nitrogene1
- Outcome
- nitrate and ammonium nitrogen in the lysimeter watere0
- Direction
- increasese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
e0“increases in both nitrate and ammonium nitrogen in the lysimeter water”
e1“The addition of nitrogen decreased soil pH”
t0“Alpine Grassland Ecosystem”
Title
Tomáš Rusňák; Jana Borovská; Stanislav David; et al. ARPHA Conference Abstracts 2025. doi:10.3897/aca.8.e155503
Other claims from this paper (19)
- Intervention effect Nitrogen addition significantly increased aboveground biomass.
- Intervention effect Warming significantly increased aboveground biomass.
- Intervention effect Nitrogen addition chiefly benefited Avenella flexuosa and Festuca supina.
- Intervention effect Nitrogen addition moderately increased dwarf shrub and moss biomass.
- Intervention effect Combined warming and nitrogen addition further amplified graminoid biomass.
- Observation Luzula alpinopilosa and Juncus trifidus became dominant under the combined treatment.
- Intervention effect Combined warming and nitrogen may inhibit dwarf scrub and moss growth.
- Intervention effect Combined warming and nitrogen eliminated lichens.
- Intervention effect Warming alone yielded the highest overall biomass.
- Observation Under warming alone, dwarf shrubs, mosses and lichens grew while graminoids responded modestly.
- Observation Control plots had lower overall biomass than every manipulated treatment.
- Association RDA associated control and warming treatments closely.
- Association RDA found nitrogen and combined treatments negatively correlated with control and warming.
- Association Avenella flexuosa, Festuca supina, Carex bigelowii and Polytrichum alpinum correlated positively with nitrogen addition.
- Association Luzula alpinopilosa, Juncus trifidus and Senecio carpaticus correlated positively with combined treatment.
- Association Homogyne alpina, Hieracium alpinum and Cladonia spp. correlated negatively with combined treatment.
- Association Several listed species correlated with control and warming and were most affected by nitrogen addition.
- Intervention effect Nitrogen addition lowered soil pH and ion exchange capacity.
- Observation Lysimeter water conductivity and leached ions rose, and warming treatments increased dissolved organic carbon.