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U.S. Department of Energy
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Air-pollution injury on Pinus strobus in Indiana Dunes National Lakeshore - 1985 survey results. Final report

Technical Report ·
OSTI ID:6357596

Visible symptoms of ozone injury were observed on 100% of the Eastern white pine trees (Pinus strobus) sampled in 1985 from permanent pine plots at Indiana Dunes National Lakeshore. Average injury was low and affected about 5% of the needle surface. Only 6% of the trees sampled had more than 10% injury. Fleck injury was the most common ozone symptom encountered, followed by tipburn and chlorotic mottle. Significant variation among plots existed in total ozone injury, chlorotic mottle, tipburn, and needle length. Symptoms of other injury types were observed on 9% of the needle surfaces of sampled trees.

Research Organization:
Butler Univ., Indianapolis, IN (USA). Holcomb Research Inst.
OSTI ID:
6357596
Report Number(s):
PB-87-172128/XAB; HRI-97
Country of Publication:
United States
Language:
English