Transpiration Rates of Arctic and Alpine Shrubs
Bliss LC. 1960. Transpiration Rates of Arctic and Alpine Shrubs. Ecology. 41(2):386-389
Transpiration rates for species of willow, alder, and dwarf birch shrubs were measured by the photometer method in the arctic tundra of northern Alaska and the alpine tundras of Wyoming and New Hampshire. At the same time data were collected on air and soil temperature, vapor pressure deficit, wind, and cloud cover. On a diurnal basis, water losses were directly related to air temperature, VPD, and wind speeds below 6 mph while inversely related to cloud cover and wind speeds above 6 to 8 mph. Although different species were measured under different atmospheric conditions, transpiration rates per unit leaf area for the shrubs were highest in New Hampshire, lowest in Wyoming and intermediate in Alaska. In general, willow transpiration rates were lower than those for birch with alder intermediate.
- Type
- Journal Article
- Authors
- Bliss, L
- Units
- ARCN , BELA , CAKR , GAAR , KOVA , NOAT
- Keywords
- Arctic, Birch, Photosynthesis, Temperature, Transpiration, Vegetation, Willow