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Full-Text Articles in Physical Sciences and Mathematics
Effects Of 11 Years Of Co2 Enrichment On Root Biomass And Spatial Distribution In A Florida Scrub-Oak Ecosystem, Rachel Eilenfield Schroeder
Effects Of 11 Years Of Co2 Enrichment On Root Biomass And Spatial Distribution In A Florida Scrub-Oak Ecosystem, Rachel Eilenfield Schroeder
Biological Sciences Theses & Dissertations
A Florida (USA) scrub-oak ecosystem was exposed to elevated atmospheric CO2 in open-top chambers from 1996-2007. Minirhizotrons and ground-penetrating radar (GPR) were used to measure fine root (< 2 mm diameter) and coarse root (> 5 mm diameter) biomass, respectively. After 11 years of CO2 enrichment, there was a trend of greater total root biomass under elevated CO2. Fine root biomass exhibited a pattern of recovery and steady state throughout the study, with significant CO2 stimulation observed only after disturbance. Greater root biomass under elevated CO2 during recovery periods could result in greater carbon inputs belowground, alteration of the soil carbon …