Claim · model-written summary
Perennial grass yield declined in lowland.
Verbatim
e0“yield of perennial grasses from 2.44 tons per acre to only 0.27 ton.”
Title
Quantitative Study of Degeneration of Mixed Prairie
Farrel Branson; J. E. Weaver Botanical Gazette 1953. doi:10.1086/335784
Other claims from this paper (19)
- Observation Ungrazed hilltops and upper slopes were mostly covered by short grasses.
- Observation Ravines and banks supported tall and mid grass vegetation.
- Observation Typical Mixed Prairie occupied long mid slopes.
- Association Lowland Andropogon gerardi composition declined across range deterioration.
- Association Short grasses increased from excellent to fair pasture and then decreased in poor range.
- Association Lowland grass basal area rose through fair range but was lower in poor range.
- Association Organic mulch declined with degeneration in lowland.
- Association Three hillside grasses declined to less than one percent in fair range.
- Observation Bouteloua gracilis maintained high composition on hillsides.
- Association Buchloe dactyloides increased to fair pasture and then declined.
- Association Hillside basal area rose from excellent to fair range and then fell.
- Observation Hillside perennial grass yields declined across range condition classes.
- Association Hillside mulch yield declined from excellent to poor range.
- Observation Short grasses dominated hilltop basal area in both excellent and poor pastures.
- Association Hilltop grass basal area increased under grazing and then fell in poor range.
- Association Hilltop mulch declined in poor range.
- Association Grass yield on hilltops was lower in fair and poor range.
- Association Characteristic forbs declined with prairie degeneration.
- Observation Most examined ranges were fair or poor.