WIKINDX Resources
|
|
|
|
|
Smith, S. D., Strain, B. R., & Sharkey, T. D. (1987). Effects of co2 enrichment on four great basin grasses. Functional Ecology, 1(2), 139–143.
Added by: Eric Peterson 2007-10-16 16:26:54
|
|
|
Categories: General
Keywords: Bromus tectorum, CO, enrichment, Great Basin, growth, hotosynthesis, Oryzopsis h p ~ e n o i d e sp, rangelands, steppe, stomata1 conductance, water-use-efficiency
Creators: Sharkey, Smith, Strain
Collection: Functional Ecology
|
Number of views: 143
Popularity index: 93.46%
|
|
|
|
|
Abstract
Plants of four Great Basin grass species
were grown from seed in two greenhouses at low
( 3 4 0 ~ 1lP 1) and high ( 6 8 0 ~ 11- l) CO, concentration.
In all four species, high CO, promoted
mean increases in the number of basal stems, leaf
area, specific leaf weight and above-ground dry
weight. High CO, resulted in an increase in COP
assimilation in two C, grasses but not in a C, grass,
while all three species showed decreases in stomatal
conductance. Mean increases of 60% in aboveground
dry weight and 80% in water-useefficiency
are consistent with previously reported
high CO, effects on grasses. No consistent differential
effects of high CO, were observed when
comparing annual vs perennial species. Global
CO, enrichment may alter the competitive balance
of Great Basin plant communities, possibly
enhancing the dominance of Bromus tectorum L.
on degraded rangelands.
Added by: Eric Peterson
|
|
|
|
|
|
|
|
|
|
|
|
|
|
