Claim · model-written summary
Elevated CO2 stimulated root production during each growing season.
- Taxon
- species-rich semi-natural grasslande2
- Treatment
- elevated CO2e0
- Outcome
- Root productione6
- Direction
- stimulatede6
- Qualifier
- during each growing seasone6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Verbatim
e6“Root production (measured with minirhizotrons and ingrowth-bags) was stimulated during each growing season”
e2“in a species-rich semi-natural grassland with a long history of grazing in Central Sweden”
e0“elevated CO2 stimulated light-saturated leaf-level photosynthesis of Taraxacum vulgare and Plantago media”
Title
Photosynthesis and biomass under elevated CO2 in a semi-natural grassland - a six-years' field study
Roger Pettersson; Erik Sindhöj Science Access 2001. doi:10.1071/sa0403635
Other claims from this paper (9)
- Intervention effect Elevated CO2 stimulated light-saturated leaf-level photosynthesis of Taraxacum vulgare.
- Intervention effect Elevated CO2 stimulated light-saturated leaf-level photosynthesis of Plantago media.
- Observation Photosynthesis of the grassland showed a significant decrease during each growing season.
- Intervention effect The CO2 effect on photosynthesis showed no trend over the years.
- Intervention effect The CO2 effect on leaf-level photosynthesis was larger in dry and extremely dry summers than in rainy summers.
- Intervention effect Elevated CO2 stimulated above-ground production in 1995-1997.
- Intervention effect Elevated CO2 did not change above-ground production in 1998-2000.
- Mechanism The lack of above-ground production response may be explained by unusual weather circumstances.
- Mechanism Increasing nutrient limitation might also be involved in the lack of above-ground production response.