Interactive effects of CO2 and O3 on a ponderosa pine plant/litter/ soil mesocosm

To study individual and combined impacts of two important atmospheric trace gases, CO2 and O3, on C and N cycling in forest ecosystems; a multi-year experiment using a small-scale ponderosa pine (Pinus ponderosa Laws.) seedling/soil/litter system was initiated in April 1998. The experiment was condu...

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Bibliographic Details
Published in:Environmental pollution (1987) 2001, Vol.115 (3), p.447-462
Main Authors: OLSZYK, D. M, JOHNSON, M. G, PHILLIPS, D. L, SEIDLER, R. J, TINGEY, D. T, WATRUD, L. S
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Atmosphere Exposure Chambers
Biological and medical sciences
Biomass
Carbon - metabolism
Carbon Dioxide - administration & dosage
Carbon Dioxide - pharmacology
Drug Interactions
Ecosystem
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
Equipment Design
Forestry
Fundamental and applied biological sciences. Psychology
Fungi - drug effects
General forest ecology
Generalities. Production, biomass. Quality of wood and forest products. General forest ecology
Nitrogen - metabolism
Ozone - administration & dosage
Ozone - pharmacology
Photosynthesis - drug effects
Photosynthesis - physiology
Pinus - drug effects
Pinus - growth & development
Pinus - metabolism
Pinus ponderosa
Plant Leaves - drug effects
Plant Leaves - growth & development
Plant Leaves - metabolism
Plant Roots - drug effects
Plant Roots - growth & development
Plant Roots - metabolism
Soil - analysis
Soil Microbiology
Stem Cells - drug effects
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Summary:To study individual and combined impacts of two important atmospheric trace gases, CO2 and O3, on C and N cycling in forest ecosystems; a multi-year experiment using a small-scale ponderosa pine (Pinus ponderosa Laws.) seedling/soil/litter system was initiated in April 1998. The experiment was conducted in outdoor, sun-lit chambers where aboveground and belowground ecological processes could be studied in detail. This paper describes the approach and methodology used, and presents preliminary data for the first two growing seasons. CO2 treatments were ambient and elevated (ambient + 280 ppm). O3 treatments were elevated (hourly averages to 159 ppb, cumulative exposure > 60 ppb O3, SUM 06 approximately 10.37 ppm h), and a low control level (nearly all hourly averages
ISSN:0269-7491
1873-6424
DOI:10.1016/S0269-7491(01)00234-2