Claim · model-written summary
Seeding rate did not affect native plant species richness.
- Taxon
- Native plant speciese3
- Treatment
- seeding ratee3
- Outcome
- Native plant species richnesse3
- Direction
- unaffectede3
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
e3“Native plant species richness was unaffected by seeding rate”
Title
John F. Lehmkuhl Research Exchange (Washington State University) 2002
Other claims from this paper (13)
- Intervention effect Burning doubled the production of seeded grass compared with no burning.
- Intervention effect Seeding rate (22 vs. 44 kg/ha) had no effect on the production of seeded grass.
- Observation Grass biomass peaked at 3 years.
- Observation Grass biomass then declined to negligible levels after its peak.
- Intervention effect Native plant species richness decreased after burning.
- Intervention effect After 5 years, native plant species richness nearly equalled that of unburned areas.
- Observation Native plant cover increased with time after clear felling regardless of treatment.
- Association In burned areas, seeding reduced native plant cover slightly.
- Observation Exotic species richness and cover were highest in burned areas.
- Observation About 25% of planted western hemlock seedlings died, mostly in the first year.
- Intervention effect Seeding increased western hemlock seedling mortality by 64% in burned areas compared with unseeded burned areas.
- Intervention effect Final seedling height of western hemlock was 4% higher in burned than in unburned areas.
- Intervention effect Seeding rate had no effect on western hemlock seedling height.