Claim · model-written summary
The landscape-scale decline is mostly due to spatial homogenization of native communities.
Verbatim
e0“In an analysis of 47 widespread alien plant species occurring across a 1,000 km 2 landscape, we examined the relationship between their local abundance and native plant species richness in 594 grassland plots”
e3“declines in native γ ‐richness were, on average, an order of magnitude (32.0 vs. 2.2 species) greater”
e4“mostly due to spatial homogenization of native communities”
Title
Maud Bernard‐Verdier; Philip E. Hulme Journal of Ecology 2018. doi:10.1111/1365-2745.13124
Other claims from this paper (5)
- Association Eight of 47 alien plant species were associated with a significant decline in native plant richness as their local abundance increased.
- Observation Most significant declines in native richness started at low to intermediate abundance classes.
- Observation Declines in native gamma richness were an order of magnitude greater than declines in native alpha richness, 32.0 vs 2.2 species.
- Association The magnitude of the landscape-scale decrease was best explained by the number of plots where an alien species was above its critical abundance.
- Recommendation Management targeting only locations dominated by alien plants might not mitigate impacts effectively.