A national ozone biomonitoring program--results from field surveys of ozone sensitive plants in northeastern forests (1994-2000).

Ozone Injury to Plants within the Seney National Wildlife Refuge in Northern Michigan

Annual field surveys were conducted from 1999–2004 within the Seney National Wildlife Refuge in northern Michigan to determine if ambient ozone levels at this remote location were great enough to injure refuge vegetation. Ozone injury was observed on sensitive bioindicator plants during each survey year; however, the incidence (percentage) of plants exhibiting symptoms was low and varied among ...

Ozone pollution and ozone biomonitoring in European cities Part II. Ozone-induced plant injury and its relationship with descriptors of ozone pollution

Within the scope of a biomonitoring study conducted in twelve urban agglomerations in eight European countries, the ozone-sensitive bioindicator plant Nicotiana tabacum cv. Bel-W3 was employed in order to assess the occurrence of phytotoxic ozone effects at urban, suburban, rural and traffic-exposed sites. The tobacco plants were exposed to ambient air for biweekly periods at up to 100 biomonit...

A preliminary assessment of the Montreal process indicators of air pollution for the United States.

Air pollutants pose a risk to forest health and vitality in the United States. Here we present the major findings from a national scale air pollution assessment that is part of the United States' 2003 Report on Sustainable Forests. We examine trends and the percent forest subjected to specific levels of ozone and wet deposition of sulfate, nitrate, and ammonium. Results are reported by Resource...

Investigation of Factors Associated with Ozone-induced Foliar Injury within Biomonitoring Plots in Southwestern Pennsylvania Forests

Bioindication of troposher ic ozone by native vegetation: the potential of Viburnum lantana for large-scale surveys

Introduction Because its oxidative power, tropospheric ozone is considered, on a large scale, the most harmful pollutant to vegetation (Ashmore, 2005). The exceedances of critical levels set to protect vegetation are quite high and widespread, so that large parts of crops and forests in Europe are exposed to potentially harmful levels of ozone (EEA, 2009). The impact of ozone on vegetation is t...