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Research ArticleArticles

The False Positive in Bioindicators of Air Pollution

W. David Hacker and Howard S. Neufeld
Arboriculture & Urban Forestry (AUF) September 1992, 18 (5) 249-251; DOI: https://doi.org/10.48044/jauf.1992.048
W. David Hacker
Uplands Research Lab, Great Smoky Mountains National Park, Gatlinburg, Tennessee 37738
Roles: Research Scientist
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Howard S. Neufeld
Department of Biology, Appalachian State University, Boone, North Carolina 28608
Roles: Assistant Professor
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    Table 1.

    Ozone exposure summaries for the 1990 fumigation season.

    Ozone concentrations (ppb)
    Total ppb-hours1 hr daily mean
    TargetTotal doseSeasonalHighest
    Charcoal-filtered12192.75.842.2
    Non-filtered52559.024.579.0
    2.0 × ambient100011.946.5161.1
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    Table 2.

    Incidence of ozone injury on yellow-poplar.

    TreatmentDamaged (percent)Undamaged (percent)
    Charcoal
    filtered3438
    (47)(53)
    [false positive][true negative]
    2.0 × Ambient647
    (90)(10)
    [true positive][false negative]
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Arboriculture & Urban Forestry (AUF)
Vol. 18, Issue 5
September 1992
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The False Positive in Bioindicators of Air Pollution
W. David Hacker, Howard S. Neufeld
Arboriculture & Urban Forestry (AUF) Sep 1992, 18 (5) 249-251; DOI: 10.48044/jauf.1992.048

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The False Positive in Bioindicators of Air Pollution
W. David Hacker, Howard S. Neufeld
Arboriculture & Urban Forestry (AUF) Sep 1992, 18 (5) 249-251; DOI: 10.48044/jauf.1992.048
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