Claim · model-written summary
Ambrosia shading cut daily PAR by 77% for a Carnegiea seedling.
- Taxon
- C. gigantea
Carnegiea giganteae0 - Treatment
- centre of an A. deltoidea shrube0
- Interactor
- A. deltoidea
Ambrosia deltoideae0other - Outcome
- total daily PARe0
- Direction
- lesse0
- Value
- 77%e0
Not reportedComparator
Verbatim
e0“a seedling of C. gigantea located at the centre of an A. deltoidea shrub received 77% less total daily PAR”
Title
Effect of Nurse Plants on the Microhabitat and Growth of Cacti
A. C. Franco; P. S. Nobel Journal of Ecology 1989. doi:10.2307/2260991
Other claims from this paper (11)
- Observation Carnegiea gigantea seedlings occurred only in sheltered microhabitats, 89% under two nurse plants.
- Observation Twenty-nine percent of Ferocactus acanthodes seedlings occurred in unsheltered sites.
- Observation Most sheltered F. acanthodes seedlings were beneath Hilaria rigida.
- Intervention effect Ambrosia shading predicted 90% lower net CO2 uptake than unshaded conditions.
- Intervention effect Hilaria shading cut PAR by 64% for Ferocactus seedlings.
- Intervention effect Hilaria shading predicted 65% less CO2 fixation than unshaded conditions.
- Observation Hilaria and Ferocactus had overlapping shallow roots.
- Intervention effect A model estimated 32% lower water uptake under Hilaria than in exposed Ferocactus seedlings.
- Intervention effect Predicted net CO2 uptake under Hilaria was 36% of exposed seedlings.
- Intervention effect Areole production under the nurse plant was 68% of exposed seedlings.
- Observation Soil nitrogen was 60% higher beneath Hilaria.