Claim · model-written summary
Small and frequent disturbances gave considerably higher population growth rates than large and rare disturbances.
- Taxon
- Digitalis purpurea
Digitalis purpureae0 - Treatment
- Small and frequent disturbancese5
- Outcome
- growth ratese5
- Direction
- highere5
- Qualifier
- considerablye5
- Comparator
- large and rare disturbancese5
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in a large population of Digitalis purpurea”
e5“Small and frequent disturbances led to considerably higher growth rates than large and rare disturbances”
Title
Population dynamics in Digitalis purpurea: the interaction of disturbance and seed bank dynamics
NINA SLETVOLD; KNUT RYDGREN Journal of Ecology 2007. doi:10.1111/j.1365-2745.2007.01287.x
Other claims from this paper (10)
- Observation Observed background recruitment was insufficient to ensure a positive population growth rate of Digitalis purpurea.
- Intervention effect Increased gap-opening led to higher population growth rates in Digitalis purpurea.
- Observation Population persistence was predicted at moderate disturbance levels when seed bank survival was high (0.75).
- Intervention effect Random and interval disturbance scenarios gave lower population growth rates than constant scenarios of the same average disturbance level.
- Intervention effect Random and interval disturbance scenarios gave higher extinction risks than constant scenarios of the same average disturbance level.
- Observation Stochastic elasticity analyses identified the seed bank as the most important life cycle stage for population growth and persistence in most scenarios.
- Association The relative impact of the seed bank was positively related to seed bank survival rate.
- Association The relative impact of the seed bank was negatively related to disturbance level.
- Association Variation in the recruitment fraction from seed bank versus seed rain affected population growth rate and elasticity patterns.
- Mechanism Recruitment may be locally seed-limited because of a patchy seed bank structure in Digitalis purpurea.