TY - JOUR
T1 - Physiological and foliar injury responses of Prunus serotina, Fraxinus americana, and Acer rubrum seedlings to varying soil moisture and ozone
AU - Schaub, M.
AU - Skelly, J. M.
AU - Steiner, K. C.
AU - Davis, D. D.
AU - Pennypacker, S. P.
AU - Zhang, J.
AU - Ferdinand, J. A.
AU - Savage, J. E.
AU - Stevenson, R. E.
N1 - Funding Information:
This research was conducted with the support of the United States Environmental Protection Agency Assistance ID NO. 825244-01-00, National Center for Environmental Research and Quality Assurance, Washington, DC. Additional support was provided by the USDA-Forest Service, NE Forest Experiment Station Cooperative Agreement # 00-CA-112423-016. The authors wish to thank the Pennsylvania Department of Conservation and Natural Resources, Bureau of Forestry, Penn Nursery for their outstanding cooperative support. The ozone monitoring at the research site as supported by the Pennsylvania Department of Environmental Protection, Bureau of Air Quality is also acknowledged. Allegheny Energy Supply, Inc. (Monroeville, PA) and Reliant Energy Inc. (Johnstown, PA) are also acknowledged with appreciation for supporting the energy requirements for this project. We thank the students R. Church, P. Craig, D. Kowalski, L. Kravitz, D. Lowenstein, and K. Novak for their assistance in the field. The senior author wishes to thank S. Solberg for the manuscript review and his valuable advice.
Funding Information:
Although the research described in the article has been funded wholly or in part by the US Environmental Protection Agency's STAR program through grant (ID No. 825244-01-00), it has not been subjected to any EPA review and therefore does not necessarily reflect the views of the Agency, and no official endorsement should be inferred.
PY - 2003/7
Y1 - 2003/7
N2 - Sixteen black cherry (Prunus serotina, Ehrh.), 10 white ash (Fraxinus americana, L.) and 10 red maple (Acer rubrum, L.) 1-year old seedlings were planted per plot in 1997 on a former nursery bed within 12 open-top chambers and six open plots. Seedlings were exposed to three different ozone scenarios (ambient air: 100% O3; non-filtered air: 98% ambient O3; charcoal-filtered air: 50% ambient O3) within each of two different water regimes (nine plots irrigated, nine plots non-irrigated) during three growing seasons. During the 1998 and 1999 growing season, leaf gas exchange, plant water relations, and foliar injury were measured. Climatic data, ambient- and chamber-ozone-concentrations were monitored. We found that seedlings grown under irrigated conditions had similar (in 1998) but significantly higher gas exchange rates (in 1999) than seedlings grown within non-irrigated plots among similar ozone exposures. Cherry and ash had similar ozone uptake but cherry developed more ozone-induced injury (<34% affected leaf area, LAA) than ash (<5% LAA), while maple rarely showed foliar injury, indicating the species differed in ozone sensitivity. Significantly more severe injury on seedlings grown under irrigated conditions than seedlings grown under non-irrigated conditions demonstrated that soil moisture altered seedling responses to ambient ozone exposures.
AB - Sixteen black cherry (Prunus serotina, Ehrh.), 10 white ash (Fraxinus americana, L.) and 10 red maple (Acer rubrum, L.) 1-year old seedlings were planted per plot in 1997 on a former nursery bed within 12 open-top chambers and six open plots. Seedlings were exposed to three different ozone scenarios (ambient air: 100% O3; non-filtered air: 98% ambient O3; charcoal-filtered air: 50% ambient O3) within each of two different water regimes (nine plots irrigated, nine plots non-irrigated) during three growing seasons. During the 1998 and 1999 growing season, leaf gas exchange, plant water relations, and foliar injury were measured. Climatic data, ambient- and chamber-ozone-concentrations were monitored. We found that seedlings grown under irrigated conditions had similar (in 1998) but significantly higher gas exchange rates (in 1999) than seedlings grown within non-irrigated plots among similar ozone exposures. Cherry and ash had similar ozone uptake but cherry developed more ozone-induced injury (<34% affected leaf area, LAA) than ash (<5% LAA), while maple rarely showed foliar injury, indicating the species differed in ozone sensitivity. Significantly more severe injury on seedlings grown under irrigated conditions than seedlings grown under non-irrigated conditions demonstrated that soil moisture altered seedling responses to ambient ozone exposures.
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U2 - 10.1016/S0269-7491(02)00462-1
DO - 10.1016/S0269-7491(02)00462-1
M3 - Article
C2 - 12713930
AN - SCOPUS:0037411344
SN - 0269-7491
VL - 124
SP - 307
EP - 320
JO - Environmental Pollution
JF - Environmental Pollution
IS - 2
ER -