Claim · model-written summary
Changes in fertility and moisture values decreased with slope angle and solar radiation index.
Verbatim
e0“The magnitude of change of fertility and moisture values was found to decrease with angle of slope and with a topographic solar radiation index derived from slope and aspect.”
t0“British chalk grasslands”
Title
Influence of slope and aspect on long‐term vegetation change in British chalk grasslands
JONATHAN BENNIE; MARK O. HILL; ROBERT BAXTER; et al. Journal of Ecology 2006. doi:10.1111/j.1365-2745.2006.01104.x
Other claims from this paper (9)
- Observation Species number significantly decreased across all four regions.
- Observation Stress-tolerant species declined in plot occupancy and within-plot frequency.
- Observation Competitive mesotrophic grassland species colonized previously unoccupied plots.
- Observation Competitive species did not significantly increase in frequency within occupied plots.
- Observation Ellenberg fertility values significantly increased across all regions.
- Association Ellenberg fertility values were highly correlated with the first DCA axis.
- Mechanism The shift toward mesotrophic communities is consistent with fragmentation and nutrient enrichment effects.
- Mechanism Steep chalk grasslands are hypothesized to resist competitive grass invasion through phosphorus limitation.
- Mechanism Southerly chalk grasslands are hypothesized to resist invasion through more intense and frequent drought.