Influence of Krummholz Mat Mircoclimate on Needle Physiology and Survival
Hadley JL and Smith WK. 1987. Influence of Krummholz Mat Mircoclimate on Needle Physiology and Survival. Oecologia. 73(1):82-90
Microclimate and photosynthesis of krummholz mat growth forms of Picea engelmanii (Parry) and Abies lasiocarpa [Hook.] Nutt. were investigated to determine structural features which may aid survival in alpine environments. Extremely high concentrations of needles within krummholz mat canopies created an aerodynamic structure which elevated needle temperatures to more optimal photosynthetic levels in summer and resulted in more efficient snow accumulation in winter. These factors appear crucial for winter needle survival. Thus, krummholz mats appear to be an important adaptation in growth form which provides survival benefits in both summer and winter.
- Type
- Journal Article
- Authors
- Hadley, J.; Smith, W.
- Units
- GLAC
- Keywords
- Abies lasiocarpa, adaptations, Engelman Spruce, krummholz, Microclimate, Picea engelmannii, Plant Studies, subalpine fir, timberline