Effects of ozone and acid rain on white pine ( Pinus strobus) seedlings grown in five soils. I. Net photosynthesis and growth.

P. B. Reich, A. W. Schoettle, H. F. Stroo, J. Troiano, R. G. Amundson

Research output: Contribution to journalArticle

55 Scopus citations

Abstract

Seedlings were grown in 5 forest soils and exposed for 4 months to realistic levels of acid rain and ozone. Acid rain treatments consisted of exposure to simulated rain of pH 5.6, 4.0, 3.5 or 3.0, while ozone treatments consisted of exposure to 0.02, 0.06, 0.10 or 0.14 ppm ozone. Minimal interaction between acid rain and ozone was observed with regard to photosynthesis or growth. Acid rain and soil type has a strong interaction in determining plant response. In general, acid rain caused increased growth and net photosynthesis as a result of N fertilization from the simulated rain, but the extent of this response was inversely correlated with the availability of nitrogen in each soil. Ozone treatments caused decreased net photosynthesis in pine seedlings. -from Authors

Original languageEnglish (US)
Pages (from-to)977-987
Number of pages11
JournalCanadian Journal of Botany
Volume65
Issue number5
DOIs
StatePublished - Jan 1 1987
Externally publishedYes

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