Claim · model-written summary
Point-specific herbaceous root biomass varied three orders of magnitude.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Verbatim
e0“point-specific biomass varied three orders of magnitude (<50 g/m2 to >3000 g/m2)”
e1“Herbaceous root biomass”
Title
WOODY PLANT ESTABLISHMENT AND SPATIAL HETEROGENEITY IN GRASSLANDS
P. N. Jurena; Steve Archer Ecology 2003. doi:10.1890/0012-9658(2003)084[0907:wpeash]2.0.co;2
Other claims from this paper (13)
- Intervention effect Root exclusion experiments showed belowground grass competition affects Prosopis seedling establishment.
- Association Belowground available volume accounted for 67% of variance in first-year Prosopis seedling growth.
- Association Belowground available volume accounted for 79% of variance in second-year Prosopis seedling survival.
- Association Vertical available volume was more important than horizontal volume for Prosopis establishment.
- Observation Competition with grass roots occurred under near-average and below-average annual rainfall.
- Observation In four grass stands, 62% of grid points were unoccupied.
- Observation Half of unoccupied grassland grid points exceeded 80 cm2.
- Observation Gaps of at least 10 cm supported Prosopis germination and survival after one growing season at 40%.
- Observation Gaps of at least 10 cm supported Prosopis survival after two growing seasons at 15%.
- Observation Herbaceous root biomass was statistically comparable among grass stands.
- Observation Mean root biomass was 768 g/m2 in a below-average rainfall year.
- Observation Mean root biomass was 1108 g/m2 in a roughly average rainfall year.
- Method / resource Grass basal area or gap area could not infer susceptibility to woody seedling establishment.