Field methods used for air pollution research with plants

Winner, William E.; Greitner, Carol S.

doi:10.1007/978-94-010-9013-1_17

Cited by 4 publications

(3 citation statements)

References 43 publications

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“…A systematic error may be caused by the calculation procedure of the deposition velocity. According to Winner and Greitner (1989), the actual relevant atmospheric conditions for the incubated samples are represented by the concentrations inside the branch cuvette. We agree with the aforementioned authors.…”

Section: Discussionmentioning

confidence: 99%

Global uptake of carbonyl sulfide (COS) by terrestrial vegetation: Estimates corrected by deposition velocities normalized to the uptake of carbon dioxide (CO<sub>2</sub>)

Sandoval-Soto¹,

Stanimirov²,

Hobe³

et al. 2005

Preprint

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Abstract. COS uptake by trees, as observed under dark/light changes and under application of the plant hormone abscisic acid, exhibited a strong correlation with the CO2 assimilation rate and the stomatal conductance. As the uptake of COS occurred exclusively through the stomata we compared experimentally derived and re-evaluated deposition velocities (Vd for COS and CO2). We show that Vd of COS is generally significantly larger than that of CO2. We therefore introduced this attribute into a new global estimate of COS fluxes into vegetation. The global COS uptake by vegetation as estimated by the new model ranges between 0.69-1.40 Tg a-1, based on the Net Primary Productivity (NPP). Taking into account Gross Primary Productivity (GPP) the deposition estimate ranges between 1.37-2.81 Tg a-1 (0.73-1.50 Tg S a-1). We believe that in order to obtain accurate and reliable global NPP-based estimates for the COS flux into vegetation, the different deposition velocities of COS and CO2 must be taken into account.

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Section: Discussionmentioning

confidence: 99%

Global uptake of carbonyl sulfide (COS) by terrestrial vegetation: Estimates corrected by deposition velocities normalized to the uptake of carbon dioxide (CO<sub>2</sub>)

Sandoval-Soto¹,

Stanimirov²,

Hobe³

et al. 2005

Preprint

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show abstract

“…This is a common approach for exploring the relationship between the flux of a gas at the leaf-atmosphere interface and plant physiological processes such as G s and net CO 2 assimilation (Winner and Greitner, 1989). The relationship between J CH 4 and individual environmental factors for each species individually and for all species combined (objective ii) was evaluated using linear and nonlinear regression techniques (Sokal and Rohlf, 1995).…”

Section: Discussionmentioning

confidence: 99%

Physiological control of leaf methane emission from wetland plants

Garnet¹,

Megonigal²,

Litchfield³

et al. 2005

Aquatic Botany

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“…The production rate, the deposition velocity, and the compensation point concentration are determined by the linear regression of observed fluxes versus mixing ratio, and are found as the ordinate intercept, the slope and the abscissa intercept of the regression line, respectively. According to Winner and Greitner [1989], the concentrations prevailing in the branch cuvette represent the actual relevant atmospheric conditions for the incubated samples. In general we agree with the aforementioned authors.…”

Section: Deposition Velocities and Compensation Point Mixing Ratiosmentioning

confidence: 99%

Exchange of short‐chain monocarboxylic acids by vegetation at a remote tropical forest site in Amazonia

et al. 2002

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[1] As part of the project LBA-EUSTACH (European Studies on Trace gases and Atmospheric Chemistry as a contribution to the Large-Scale Biosphere-Atmosphere experiment in Amazonia), the exchange of formic acid and acetic acid between vegetation and the atmosphere was investigated in the wet-to-dry season transition and the dry-to-wet season transition periods in 1999 in Rondônia, Brazil. Direct exchange measurements on the branch level mainly exhibited uptake of formic acid and acetic acid for all plant species in both seasons, although diel, seasonal, and interspecies variations were observed. Even though other physiological and physico-chemical parameters may have contributed, the uptake of organic acids was found to be primarily a function of the ambient atmospheric mixing ratios. The linear dependence suggests a bidirectional exchange behavior of the plants and calculated deposition velocities (0.17-0.23 cm s À1 ), compensation point mixing ratios (0.16-0.30 ppb), and potential emission rates under purified air conditions (0.013-0.031 nmol m À2 s À1 ) are discussed. Vertical profile measurements in and above the primary forest canopy further strengthened the assumption that the forest is rather a sink than a source for organic acids. The generally lower mixing ratios observed within the canopy were indicative of an uptake by vegetation and/or the soil surface. Continuous measurements of the ambient atmospheric mixing ratios at the canopy top revealed strong diel variations in both seasons and a marked seasonality with higher mixing ratios during the dry season, both being mirrored in the variation of observed uptake rates of the plants. High atmospheric concentrations during the dry season were attributed to biomass burning. During the wet season, when biomass burning activity was low, indirect emission by the vegetation, i.e., photochemical oxidation of primarily emitted biogenic reactive hydrocarbons, was assumed to dominantly contribute to the atmospheric burden of the organic acids. The high degree of correlation between atmospheric formic acid and acetic acid indicated that similar atmospheric processes were affecting their mixing ratios.

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Field methods used for air pollution research with plants

Cited by 4 publications

References 43 publications

Global uptake of carbonyl sulfide (COS) by terrestrial vegetation: Estimates corrected by deposition velocities normalized to the uptake of carbon dioxide (CO<sub>2</sub>)

Global uptake of carbonyl sulfide (COS) by terrestrial vegetation: Estimates corrected by deposition velocities normalized to the uptake of carbon dioxide (CO<sub>2</sub>)

Physiological control of leaf methane emission from wetland plants

Exchange of short‐chain monocarboxylic acids by vegetation at a remote tropical forest site in Amazonia

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Field methods used for air pollution research with plants

Cited by 4 publications

References 43 publications

Global uptake of carbonyl sulfide (COS) by terrestrial vegetation: Estimates corrected by deposition velocities normalized to the uptake of carbon dioxide (CO&lt;sub&gt;2&lt;/sub&gt;)

Global uptake of carbonyl sulfide (COS) by terrestrial vegetation: Estimates corrected by deposition velocities normalized to the uptake of carbon dioxide (CO&lt;sub&gt;2&lt;/sub&gt;)

Physiological control of leaf methane emission from wetland plants

Exchange of short‐chain monocarboxylic acids by vegetation at a remote tropical forest site in Amazonia

Contact Info

Product

Resources

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Global uptake of carbonyl sulfide (COS) by terrestrial vegetation: Estimates corrected by deposition velocities normalized to the uptake of carbon dioxide (CO<sub>2</sub>)

Global uptake of carbonyl sulfide (COS) by terrestrial vegetation: Estimates corrected by deposition velocities normalized to the uptake of carbon dioxide (CO<sub>2</sub>)