Claim · model-written summary
Extension growth of border trees was slower for longer branches.
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Verbatim
e0“The mean extension (branch) growth of border trees was 12 cm/yr, with slower growth by longer branches”
Title
CHANGES IN SOUTHERN APPALACHIAN CANOPY TREE GAPS SAMPLED THRICE
James R. Runkle Ecology 1998. doi:10.1890/0012-9658(1998)079[1768:cisact]2.0.co;2
Other claims from this paper (16)
- Observation Mean extension (branch) growth of border trees was 12 cm/yr.
- Observation Gap makers that had been tall stumps tended to deteriorate, although 35% stayed intact over the 14 yr of the study.
- Observation Border-tree mortality averaged 0.60%/yr.
- Association Border-tree mortality was higher for larger stems and varied much among species.
- Observation Stem density of saplings in gaps increased during the first sampling interval.
- Observation Stem density of saplings in gaps decreased during the second sampling interval as self-thinning counteracted increased establishment.
- Observation Basal area increased during both sampling intervals.
- Association The death of border trees increased basal area per unit gap area.
- Association Acer saccharum, Tsuga canadensis, Fagus grandifolia and Halesia carolina showed different patterns of correlation to gap size and age.
- Association Species showed more correlations with gap age for the first sample than afterwards.
- Association Gap size was more consistently related to species importance.
- Association Species patterns were affected by the presence or absence of border-tree mortality.
- Observation The stands studied seem nearly at equilibrium.
- Observation The species present dominated all size classes: gap saplings, border trees, other canopy trees not related to gaps, and understory saplings.
- Observation Species differed in their relative growth rates in the understory and in gaps of different sizes.
- Observation Species differed in their survival rates in the understory and in the canopy.