Claim · model-written summary
Legumes were generally more abundant on cast overburden than topsoil surfaces until 1993.
- Taxon
- Legumese0
- Treatment
- cast overburdene0
- Outcome
- canopy cover, aboveground live biomass, or fraction of total biomasse0
- Direction
- more abundante0
- Qualifier
- until 1993e0
- Comparator
- two topsoil surfacese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Verbatim
e0“Legumes ( canopy cover, aboveground live biomass, or fraction of total biomass) were generally more abundant on cast overburden than on the two topsoil surfaces until 1993”
Title
D. A. Kost; J. P. Vimmerstedt Journal American Society of Mining and Reclamation 1994. doi:10.21000/jasmr94030295
Other claims from this paper (19)
- Intervention effect Herbaceous cover and biomass were greater on topsoil than overburden in 1989 and 1993.
- Intervention effect Herbaceous cover and biomass were greater on overburden than topsoil in 1992.
- Observation Total cover peaked at 84% in July 1989 following nitrogen application.
- Observation Total biomass peaked at 239 g/0.5 m 2 in July 1989.
- Intervention effect Ground cover and biomass were lower at the lowest nitrogen rate in 1989 only.
- Intervention effect Seed mix type did not affect ground cover growth.
- Intervention effect Seed mix type did not affect tree growth.
- Observation Overall tree survival fell from 82.0% in year one to 40.6% after five years.
- Observation pine survival was 3.5% after five years.
- Observation oak survival was 22.2% after five years.
- Observation maple survival was 38.5% after five years.
- Observation ash survival was 98.1 % after five years.
- Intervention effect White ash was taller on ripped topsoil than cast overburden.
- Intervention effect Silver maple survival was higher on topsoil than overburden.
- Intervention effect Red oak survived better on topsoil surfaces than overburden.
- Intervention effect Maple survival was higher at intermediate than low nitrogen rate.
- Intervention effect Oak survival was higher at intermediate than low nitrogen rate.
- Intervention effect High nitrogen did not reduce tree survival.
- Mechanism Herbicide control of ground cover and high rainfall may explain the absence of nitrogen harm to tree survival.