Photosynthetic Competence of the Subnivean Vegetation of an Arctic Tundra
Tieszen LL. 1974. Photosynthetic Competence of the Subnivean Vegetation of an Arctic Tundra. Arctic and Alpine Research. 6(3):253-256
Subnivean temperatures at Barrow, Alaska, were near -7°C until meltwater percolated through the snow shortly before complete snowmelt. Prior to meltoff photosynthetic capacities and carboxylation activities of three species were very low. The combination of low temperatures, reduced radiation, and incompetent photosynthetic structures results in very little CO2 uptake prior to meltoff.
- Type
- Journal Article
- Authors
- Tieszen, L
- Units
- BELA , CAKR , GAAR , KOVA , NOAT
- Keywords
- Arctic, Photosynthesis, Physiology, Plant Communities (Vegetation), Snow, Tundra, Vegetation