Claim · model-written summary
Surface acorns on a north aspect survived autumn heat and germinated in winter but rooted poorly.
- Outcome
- survived autumn heat and germinated during the winter, but rooted poorlye0
- Setting
- north—facing plote0
QuercusNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Oak Regeneration in the Upper Carmel Valley, California”
e0“On a north—facing plot they survived autumn heat and germinated during the winter, but rooted poorly”
Title
Oak Regeneration in the Upper Carmel Valley, California
James R. Griffin Ecology 1971. doi:10.2307/1936034
Other claims from this paper (12)
- Observation Quercus douglasii acorns matured in October.
- Observation Q. lobata acorns matured in October.
- Observation Nondormant acorns of these two oaks germinated quickly at favorable temperatures.
- Observation Quercus agrifolia acorns matured later.
- Observation Quercus agrifolia acorns germinated more slowly.
- Observation Surface acorns lost viability on a south aspect.
- Intervention effect Buried acorns germinated well on either aspect.
- Mechanism Burial by birds and squirrels insulates acorns from heat, hides them from animals, and ensures rooting.
- Observation Quercus douglasii seedlings had the greatest drought tolerance.
- Observation On south-facing soil with grass, Quercus douglasii seedlings survived their first summer only in wet years.
- Observation On north aspects, seedlings of several species survive grass competition over broader climate conditions.
- Observation Deer and pocket gophers eliminated seedlings surviving summer drought.