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Title: Water relations of coniferous tree species subjected to ozone in the San Bernadino Mountains, Southern California

Abstract

Species differences in sensitivity to ozone damage in the vegetation of the San Bernadino Mountains in southern California are discussed. Pinus ponderosa and P. Jeffreyi are affected while P. Coulteri, P. Lambertiana, Lebocedrus decurrans and chaparral species appear resistant. The San Bernadino Mountains are located east of the Los Angeles basin and are generally above the smog layer, but by late afternoon the inversion rises and smog moves east so that ozone levels in the mountains increase. Ozone levels are especially high in summer. The ozone enters the leaf by diffusing through the stomates, thus the susceptibility should be related in part to diurnal and seasonal patterns of stomatal activity. The hypothesis that the ozone sensitivity of coniferous tree species in the San Bernadino Mountains is related to the plant water relations controlling diurnal patterns of stomatal behavior through the year was investigated and results are reported.

Authors:
; ; ;
Publication Date:
Research Org.:
California Univ., Livermore (USA). Lawrence Livermore Lab.
OSTI Identifier:
7212801
Report Number(s):
UCRL-13729
DOE Contract Number:  
W-7405-ENG-48; PO-4974403
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 54 ENVIRONMENTAL SCIENCES; CONIFERS; GENETIC VARIABILITY; OZONE; ENVIRONMENTAL TRANSPORT; FOLIAR UPTAKE; TOXICITY; BIOLOGICAL EFFECTS; CALIFORNIA; DAILY VARIATIONS; MOUNTAINS; SEASONAL VARIATIONS; TERRESTRIAL ECOSYSTEMS; TISSUE DISTRIBUTION; TRANSPIRATION; TREES; WATER; BIOLOGICAL VARIABILITY; BIOMASS; DISTRIBUTION; ECOSYSTEMS; ENERGY SOURCES; HYDROGEN COMPOUNDS; MASS TRANSFER; NORTH AMERICA; OXYGEN COMPOUNDS; PLANTS; RENEWABLE ENERGY SOURCES; UPTAKE; USA; VARIATIONS; WESTERN REGION; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987); 510200 - Environment, Terrestrial- Chemicals Monitoring & Transport- (-1989)

Citation Formats

Miller, P C, Poole, D K, Miller, P M, and Murray, C. Water relations of coniferous tree species subjected to ozone in the San Bernadino Mountains, Southern California. United States: N. p., 1977. Web.
Miller, P C, Poole, D K, Miller, P M, & Murray, C. Water relations of coniferous tree species subjected to ozone in the San Bernadino Mountains, Southern California. United States.
Miller, P C, Poole, D K, Miller, P M, and Murray, C. Fri . "Water relations of coniferous tree species subjected to ozone in the San Bernadino Mountains, Southern California". United States.
@article{osti_7212801,
title = {Water relations of coniferous tree species subjected to ozone in the San Bernadino Mountains, Southern California},
author = {Miller, P C and Poole, D K and Miller, P M and Murray, C},
abstractNote = {Species differences in sensitivity to ozone damage in the vegetation of the San Bernadino Mountains in southern California are discussed. Pinus ponderosa and P. Jeffreyi are affected while P. Coulteri, P. Lambertiana, Lebocedrus decurrans and chaparral species appear resistant. The San Bernadino Mountains are located east of the Los Angeles basin and are generally above the smog layer, but by late afternoon the inversion rises and smog moves east so that ozone levels in the mountains increase. Ozone levels are especially high in summer. The ozone enters the leaf by diffusing through the stomates, thus the susceptibility should be related in part to diurnal and seasonal patterns of stomatal activity. The hypothesis that the ozone sensitivity of coniferous tree species in the San Bernadino Mountains is related to the plant water relations controlling diurnal patterns of stomatal behavior through the year was investigated and results are reported.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {5}
}

Technical Report:
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