Modeling plant response to tropospheric ozone: A critical review

Kickert, Ronald N.; Krupa, Sagar V.

doi:10.1016/0269-7491(91)90057-4

Cited by 43 publications

(15 citation statements)

References 109 publications

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“…Growth season hourly ambient 03 concentrations exhibit a non-normal frequency distribution. In these situations computations of seasonal or annual means are statistically inappropriate (Kickert & Krupa 1991). This point was recently confirmed by Legge et al (1991) who showed decreasing values of the coefficient of determination (R 2) between the seasonal mean 03 concentrations and increasing values of the seasonal hourly maximum 03 concentrations at multiple 03 monitoring sites and years.…”

Section: What Have We Learned From 03 Exposure-vegetation (Crop) Respmentioning

confidence: 92%

“…Pollut. 1988;Heck et al 1988;Kickert & Krupa 1991). The motivation behind this approach is to find a simple exposure statistic that will provide information for establishing ambient air quality standards, objectives or guidelines for 03.…”

Section: What Have We Learned From 03 Exposure-vegetation (Crop) Respmentioning

confidence: 99%

“…While this approach is strictly statistical in nature, it allows for an improved numerical definition of the stochastic independent variable(s). Having done so, such definitions must be incorporated into a corresponding time seriesbased predictive biological process model to achieve wide applicability and reproducibility (Kickert & Krupa 1991). While such efforts most likely can account for the temporal and spatial variability in cause-effect relationships, they would require extensive and intensive research efforts before the concept could be considered in regulatory policies.…”

Section: What Have We Learned From 03 Exposure-vegetation (Crop) Respmentioning

confidence: 99%

“…Given what we know, greater emphasis should be directed to experiments conducted in open, ambient environments so as to increase our confidence in the results we obtain. While traditionally air pollution effects scientists are concerned about the complexity attached to this approach, systems level modelers do not have a similar concern (Kickert & Krupa 1991). Equally important is the fact that there are few studies where atmospheric scientists, mathematicians and biologists have truly joined together to conduct a specific study in common time and space, from start to finish on a continuous basis (Legge & Krupa 1990).…”

Section: Considerations Relevant To the Study Of The Joint Effects Ofmentioning

confidence: 99%

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The greenhouse effect: the impacts of carbon dioxide (CO2), ultraviolet-B (UV-B) radiation and ozone (O3) on vegetation (crops)

Krupa

Kickert

1993

Vegetatio

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A high elevation (2103 m MSL) air quality (CO2, 03, radiation, etc.) monitoring site at Fortress Mountain in the Canadian Rockies (Source: Legge & Krupa 1990). AbstractMan's influence on the 'greenhouse effect,' the heating of the atmosphere due to increasing concentrations of tropospheric trace gases, is of much international concern. Among the climatic variables, elevated levels of carbon dioxide (COz), ultraviolet-B (UV-B)radiation and ozone (O3) are known to have a direct effect on vegetation. Our current knowledge of these effects is mainly based on studies involving single stress mode. Thus, the joint effects of CO2, UV-B and 03 on vegetation are poorly understood. Nevertheless, based on the literature analysis of plant response to individual stress factors, it can be concluded that sorghum, pea, bean, potato, oat, lettuce, cucumber, rice and tomato are among the crop species potentially sensitive to the joint effects of the aforementioned three variables. Similar information for tree species is essentially lacking.At least with some climatic variables such as O3, present modeling efforts of cause-effect relationships have proven to be controversial. While at a regional geographic scale ambient CO2 concentrations appear to be relatively homogeneous, ambient concentrations of 03 exhibit significant temporal and spatial variability. Because of the protective action of 03 against UV-B, similar but inverse temporal and spatial variability is expected in the surface levels of UV-B. Thus, future experimental designs should consider these exposure dynamics and modeling cause-effect relationships should be directed to stochastic processes.

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Section: What Have We Learned From 03 Exposure-vegetation (Crop) Respmentioning

confidence: 92%

Section: What Have We Learned From 03 Exposure-vegetation (Crop) Respmentioning

confidence: 99%

Section: What Have We Learned From 03 Exposure-vegetation (Crop) Respmentioning

confidence: 99%

Section: Considerations Relevant To the Study Of The Joint Effects Ofmentioning

confidence: 99%

See 2 more Smart Citations

The greenhouse effect: the impacts of carbon dioxide (CO2), ultraviolet-B (UV-B) radiation and ozone (O3) on vegetation (crops)

Krupa

Kickert

1993

Vegetatio

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“…Previous chamber-fumigated and filtered-air studies were used to assess ozone injury under ambient field conditions, as suggested by Kickert and Krupa (1991). Despite limitations in verifying injury, Bergmann et al, (1999) suggest that visible injury is the first sign of damaging exposures.…”

Section: Evaluating Symptoms Of Potential Foliar Injurymentioning

confidence: 99%

Evidence of Elevated Ozone Concentrations on Forested Slopes of the Lower Fraser Valley, British Columbia, Canada

Krzyzanowski

McKendry

Innes

2006

Water Air Soil Pollut

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During the summers of 2001 and 2002, hourly average ozone concentrations were measured at three sites of differing elevation (188, 588, and 1221 m.a.s.l.) on the forested south-facing slopes of the Lower Fraser Valley (LFV), British Columbia. Sites experienced ozone concentrations ranging from 0 to 88 ppb in 2001, and 0 to 96 ppb in 2002.Daily patterns were in agreement with previous studies showing morning increases and late afternoon peaks. Reduced diurnal variation increased the exposure of higher-elevation forested sites. An upper-level ridge coinciding with a thermal coastal trough caused above-average ozone concentrations, and the 'maximum acceptable' 1-hour National Ambient Air Quality Objective (AQO) of 82 ppb to be exceeded. Maximum ozone concentrations and AQO exceedance frequency both increased with distance eastward in the valley. A preliminary survey of ozone-like injury symptoms on native shrubs suggested that the elevated ozone levels occurring in the LFV may cause injury to forest plants.

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Production Practices and Quality Assessment of Food Crops Volume 1

Dris¹,

Jain²

2004

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Modeling plant response to tropospheric ozone: A critical review

Cited by 43 publications

References 109 publications

The greenhouse effect: the impacts of carbon dioxide (CO2), ultraviolet-B (UV-B) radiation and ozone (O3) on vegetation (crops)

The greenhouse effect: the impacts of carbon dioxide (CO2), ultraviolet-B (UV-B) radiation and ozone (O3) on vegetation (crops)

Evidence of Elevated Ozone Concentrations on Forested Slopes of the Lower Fraser Valley, British Columbia, Canada

Production Practices and Quality Assessment of Food Crops Volume 1

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