Record Display for the EPA National Library Catalog

RECORD NUMBER: 177 OF 1153

OLS Field Name OLS Field Data
Main Title Effects of Nitrogen Oxides on Vegetation.
Author Tingey, D. T. ;
CORP Author Corvallis Environmental Research Lab., OR.
Year Published 1985
Report Number EPA/600/D-85/265;
Stock Number PB86-119542
Additional Subjects Nitrogen oxides ; Tolerances(Physiology) ; Vegetation ; Plant physiology ; Concentration(Composition) ; Inorganic nitrates ; Nitrites ; Absorption ; Photosynthesis ; Lichens ; Chlorophylls ; Pine trees ; Grasses ; Populus nigra ; Betula pendula
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB86-119542 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 35p
Abstract
The data support the conclusion that lower plants are relatively tolerant of NO2, as are higher plants. Gas-phase concentrations required to cause effects are much higher than occur in the ambient. However, caution must be exercised concerning the possible effects of nitrate and nitrite delivered to the plants via wet deposition processes as thallophytes can absorb the ions directly from the environment. Nitrite (0.5 to 1.0mM) can reduce the chlorophyll content of lichens and the photosynthetic rate of algae. Additional studies are required to determine if the wet deposition rates that occur in ambient conditions are detrimental to lower plants.