Claim · model-written summary
The authors expect spruce to compete better after disturbance if moisture is sufficient and partial overstory moderates light.
- Outcome
- competitive edgee0
- Qualifier
- moisture was not limiting and (2) light stress was moderated by a partial overstorye0
PiceaNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spruce seedlings would have a competitive edge due to its greater photosynthetic rates and leaf area in post-harvest or post-disturbance environments when (1) moisture was not limiting and (2) light stress was moderated by a partial overstory”
Title
Plasticity in Response to Changing Light Environment for Red Spruce and Balsam Fir
Sarah Zazzaro DigitalCommons (California Polytechnic State University) 2009
Other claims from this paper (10)
- Observation Fir had a larger total xanthophyll pool than spruce, though active ratios were similar.
- Observation Fir and spruce had similar active to total xanthophyll ratios.
- Observation Fir and spruce had similar photochemical and nonphotochemical quenching ratios.
- Intervention effect High light decreased fir photochemical efficiency less than red spruce.
- Observation Spruce seedlings had greater biomass, height and shoot allocation than fir.
- Observation Spruce had greater photosynthetic rates during both years.
- Observation Fir allocated more resources to photoprotection and roots.
- Observation Spruce allocated more to growth, biomass and photosynthesis.
- Observation Spruce had greater foliage and height growth.
- Mechanism The authors infer that balsam fir strategy is superior in high energy settings with correlated light and moisture stress.