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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Distribution of biomass of species differing in photosynthetic pathway along an altitudinal transect in southeastern wyoming grassland
Oecologia, Volume 45, No. 3, Year 1980
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Description
Based on the physiological characteristics and responses of C3, C4, and CAM plants to environmental factors, it is generally predicted that C4 and CAM plants will become more abundant with increasing temperature and decreasing precipitation. To test this prediction, the relative contribution of each photosynthetic type to total plant community biomass was examined at seven study areas along an altitudinal transect in southeastern Wyoming grassland. In going from high (2,652 m) to low (1,405 m) elevation along this transect, mean annual temperature increased and annual precipitation decreased. The percentage of C4 biomass composing each study area decreased with increasing elevation, while the percentage of C3 biomass increased. All elevations had a significantly higher percentage of C4 biomass in August than in June, reflecting the warm season growth characteristic of C4 plants. Regressions of relative abundance of photosynthetic types on climatic variables showed that both mean annual temperature and annual precipitation were equally reliable as predictors of C3-C4 biomass, although we feel that temperature is of primary importance in explaining our observations. CAM species were present at all elevations, but showed no trends in biomass distribution with respect to elevation. © 1980 Springer-Verlag.
Authors & Co-Authors
BOUTTON, THOMAS W.
United States, Provo
Brigham Young University
United States, Sioux Falls
Augustana University
Kenya, Nairobi
University of Nairobi
Harrison, A. Tyrone
United States, Lincoln
University of Nebraska–lincoln
Smith, Bruce N.
United States, Provo
Brigham Young University
Kenya, Nairobi
University of Nairobi
Statistics
Citations: 80
Authors: 3
Affiliations: 4
Identifiers
Doi:
10.1007/BF00540195
ISSN:
00298549
e-ISSN:
14321939
Research Areas
Environmental