Claim · model-written summary
Amsinckia menziesii reduced E. macrophyllum seed production.
- Taxon
- E. macrophyllum
California macrophyllae0 - Treatment
- Amsinckia menziesiie1
- Interactor
- Amsinckia menziesii
Amsinckia menziesiie1weed - Outcome
- seed productione0
- Direction
- negatively impactede0
- Comparator
- manually weeded control plotse2
Verbatim
e0“All 3 competitors negatively impacted E. macrophyllum seed production, but seldom affected seedling establishment.”
e1“Amsinckia menziesii (native forb)”
e2“adjacent manually weeded control plots”
Title
Restoring the rare forb Erodium macrophyllum to exotic grassland in southern California
IG Gillespie; EB Allen Endangered Species Research 2008. doi:10.3354/esr00110
Other claims from this paper (8)
- Intervention effect Erodium brachycarpum reduced E. macrophyllum seed production.
- Intervention effect Bromus spp. reduced E. macrophyllum seed production.
- Observation The three competitors seldom affected E. macrophyllum seedling establishment.
- Observation A. menziesii had the most negative effect on E. macrophyllum or an effect equivalent to E. brachycarpum, while Bromus spp. had the least negative effect.
- Observation Bromus had the lowest density and recolonization rate among the three matrix species.
- Observation Soil under Bromus had the highest extractable N and P levels.
- Association E. macrophyllum establishment was greatest in Bromus patches, where the apparent competition ranking was confounded by soil nutrients.
- Recommendation The authors recommend weeding known competitors to increase E. macrophyllum seed production and restoration prospects.
