Impact of elevated CO2 on a Florida Scrub-oak Ecosystems
- Smithsonian Institute, Washington, DC (United States); Smithsonian Instiution, Smithsonian Environmental Research Center
Since May of 1996, we have conducted an experiment in Florida Scrub Oak to determine the impact of elevated atmospheric CO2 and climate change on carbon, water, and nutrient cycling in this important terrestrial ecosystem. Florida scrub oak is the name for a collective of species occupying much of the Florida peninsula. The dominant tree species are oaks and the dwarf structure of this community makes it an excellent system in which to test hypotheses regarding the potential capacity of woody ecosystems to assimilate and sequester anthropogenic carbon. Scrub oak is fire dependent with a return cycle of 10-15 years, a time which would permit an experiment to follow the entire cycle. Our site is located on Cape Canaveral at the Kennedy Space Center, Florida. After burning in 1995, we built 16 open top chambers, half of which have been fumigated with pure CO2 sufficient to raise the concentration around the plants to 350 ppm above ambient. In the intervening 10 years we have non destructively measured biomass of shoots and roots, ecosystem gas exchange using chambers and eddy flux, leaf photosynthesis and respiration, soil respiration, and relevant environmental factors such as soil water availability, temperature, light, etc.
- Research Organization:
- Smithsonian Institute, Washington, DC (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-95ER61993
- OSTI ID:
- 1061299
- Report Number(s):
- DOE-SMITHSONIAN-INSTITUTION--61993
- Country of Publication:
- United States
- Language:
- English
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