The Jasper Ridge CO[sub 2] Project: First-year biomass from micro-ecosystem for climate change analysis (MECCA) experiments

Conference · Wed Jun 01 00:00:00 EDT 1994 · Bulletin of the Ecological Society of America; (United States)

OSTI ID:7264768

Field, C B; Chapin, III, F S; Mooney, H A; Holland, E A; Chiariello, N R ^[1]

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1. Carnegie Institution of Washington, Stanford, CA (United States)

Elevated atmospheric CO[sub 2] stimulated photosynthesis but produced a mixed pattern of biomass responses in natural California grassland. In artificial ecosystems with six single species growing on low-fertility serpentine soil, addition of 20 g m[sup [minus]2] of N, P, and K led to dramatic increases in annual net primary production (NPP) (mean increase > 500%) and consistent decreases in root fraction. Elevated CO[sub 2] (ambient plus 350 [mu]mol mol[sup [minus]1]) had almost no effect on annual NPP at natural nutrient levels, but stimulated biomass production by a mean of 15% with added nutrients. Root fraction did not change consistently with elevated CO[sub 2].

• OSTI ID: 7264768
• Report Number(s): CONF-940894--
• Journal Information: Bulletin of the Ecological Society of America; (United States), Journal Name: Bulletin of the Ecological Society of America; (United States) Vol. 75:2; ISSN BECLAG; ISSN 0012-9623
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
ECOLOGICAL CONCENTRATION
ECOSYSTEMS
GROWTH
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANT GROWTH
RANGELANDS
SYNTHESIS
TERRESTRIAL ECOSYSTEMS