Effects of CO[sub 2] and climate change on forest trees: The TERA project

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

OSTI ID:7161936

Rygiewicz, P T; Tingey, D T; Olszyk, D M; Shimabuku, R ^[1]; Johnson, M G; McVeety, B D ^[2]

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1. EPA, Corvallis, OR (United States)
2. Batelle-Pacific Northwest Labs, Richland, WA (United States)

Rising atmospheric CO[sub 2] and other greenhouse gas concentrations may lead to altered climates, which may dramatically affect forests. In 1993, Douglas fir seedlings were planted in sunlight, climate-controlled environmental chambers (Terracosms) at a new research facility (TERA). The Terracosm experiment imposes altered climate scenarios possible within approximately 50 years: two CO[sub 2] (ambient, and ambient + 200 ppm) and two temperature (ambient, and ambient + 4[degrees]) treatments. The elevated CO[sub 2] and temperature treatments are added continuously to current ambient levels to preserve natural climatic variability. Supporting experiments are underday in the Cascade Mountains, and in Observation and Manipulation Rhizotrons. Seven tasks describe the ecosystem responses being measured: (1) Shoot carbon and water fluxes, (2) Shoot growth and phenology, (3) System nutrients, (4) System water, (5) Litter layer, (6) Root growth and phenology, and (7) Soil biology. Data will be used in a physiological process-based tree growth model (TREGRO) to assess effects of climate change on trees. Hypothesis, objectives and an overall description of the project are presented to introduce the results shown in the following four posters.

• OSTI ID: 7161936
• 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
560400 -- Other Environmental Pollutant Effects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CLIMATIC CHANGE
CONIFERS
ECOLOGICAL CONCENTRATION
FIRS
GROWTH
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PINOPHYTA
PLANT GROWTH
PLANTS
TREES