Dark respiration of CO[sub 2] and C[sub 4] high marsh perennials is modified by atmospheric CO[sub 2] concentration during growth in open top chambers

Conference · Wed Jun 01 04:00:00 EDT 1994 · Bulletin of the Ecological Society of America; (United States)

OSTI ID:7016123

Wielinga, P; Thompson, G B; Drake, B G ^[1]

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1. Smithsonian Environmental Research Center, Edgewater, MD (United States)

Dark respiration (R[sub d], CO[sub 2] efflux) was studied in Scirpus olneyi (C[sub 3]) and Spartina patens (C[sub 4]) grown in open top chambers and exposed to normal ambient or elevated CO[sub 2] (=normal ambient +340 ppm). R[sub d] measured on detached shoots of both species at different CO[sub 2] concentrations (C[sub a]) decreased reversibly as c[sub a] increased. The C[sub a] during growth had a long-term effect on the C[sub 3]sedges, Scirpus olneyi: R[sub d] measured at constant C[sub a] was higher in plants grown in elevated CO[sub 2] than in those grown in normal ambient CO[sub 2] only during the first 24 days of growth and during the remainder of the season it was the same or less.

• OSTI ID: 7016123
• Report Number(s): CONF-940894--
• Conference Information: Journal Name: Bulletin of the Ecological Society of America; (United States) Journal Volume: 75:2
• 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
C4 SPECIES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
ECOLOGICAL CONCENTRATION
GROWTH
OXIDES
OXYGEN COMPOUNDS
PLANT GROWTH
PLANTS