, Volume 113, Issue 1, pp 21-29

Evaluation of soil respiration and soil CO2 concentration in a lowland moist forest in Panama

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Abstract

Soil gas exchange was investigated in a lowland moist forest in Panama. Soil water table level and soil redox potentials indicate that the soils are not waterlogged. Substantial microspatial variation exists for soil respiration and soil CO2 concentration. During the rainy season, soil CO2 at 40 cm below the surface accumulates to 2.3%–4.6% and is correlated with rainfall during the previous two weeks. Temporal changes in soil CO2 are rapid, large and share similar trends between sampling points. Possible effects of soil CO2 changes on plant growth or phenology are discussed.