Flux determinations and physiological response in the exposure of red spruce to gaseous hydrogen peroxide, ozone, and sulphur dioxide

CHRISTINE A. ENNIS, ALLAN L. LAZRUS, PATRICK R. ZIMMERMAN, Russell Monson

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We report on the 3‐week exposure of a branch of a forest‐grown red spruce (Picea rubens) sapling to the combination of gaseous hydrogen peroxide, ozone, and sulphur dioxide. The exposure was conducted continuously using concentrations of H2O2, O3, and SO2 that have been observed during the summertime on the summit of Whiteface Mountain, New York. Fluxes of H2O, CO2, and the three pollutants were determined throughout the exposure. At weekly intervals, measurements of chlorophyll fluorescence, stomatal conductance, and hydrocarbon emissions were made. The response of the branch was compared to an equivalent branch of the same tree which received no pollutants but was otherwise treated identically. The exposure produced no visible injury symptoms but did produce an increase in dark respiration; the respiration rate more than doubled during the 21‐day exposure period. Net photosynthesis was unaffected for both the experimental and the control branches. Nighttime fluxes of SO2 and H2O2 to external plant surfaces were significant. The stomatal component of O3 uptake by the branch displayed a linear increase during the experiment, and showed no evidence of saturating. Daytime and nighttime fluxes of H2O2 were increasing at the end of the experiment. We observed that isoprene is emitted from red spruce, but saw no clear‐cut change in emission rate in response to the exposure experiment. Possible relationships between our experimental results and observations of red spruce decline in the forests of the northeastern United States are suggested for further investigation.

Original languageEnglish (US)
Pages (from-to)183-199
Number of pages17
JournalTellus B
Volume42
Issue number2
DOIs
StatePublished - 1990
Externally publishedYes

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physiological response
sulfur dioxide
hydrogen peroxide
ozone
respiration
pollutant
experiment
isoprene
stomatal conductance
sapling
clearcutting
exposure
photosynthesis
chlorophyll
fluorescence
hydrocarbon
mountain

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Flux determinations and physiological response in the exposure of red spruce to gaseous hydrogen peroxide, ozone, and sulphur dioxide. / ENNIS, CHRISTINE A.; LAZRUS, ALLAN L.; ZIMMERMAN, PATRICK R.; Monson, Russell.

In: Tellus B, Vol. 42, No. 2, 1990, p. 183-199.

Research output: Contribution to journalArticle

ENNIS, CHRISTINE A. ; LAZRUS, ALLAN L. ; ZIMMERMAN, PATRICK R. ; Monson, Russell. / Flux determinations and physiological response in the exposure of red spruce to gaseous hydrogen peroxide, ozone, and sulphur dioxide. In: Tellus B. 1990 ; Vol. 42, No. 2. pp. 183-199.
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