Nitrogen Oxides (NOx)

NOx :: Stairstep Moss

Impact Type: Direct exposure to pollutant

Key Concerns:

Exposure to raised levels of nitrogen oxides can interfere with the plant's metabolism which has the effect of reducing photosynthetic activity and therefore growth (Angold 1997). Morgan et al. (1992) have shown that Hylocomium splendens is susceptible to disruption of its metabolism when exposed to high rates dry nitrogen deposition (35 nl l-1 NO2). However, plants can recover normal rates of metabolism after a pollution free period (Morgan et al. 1992).

NOx :: Schreber's Feathermoss

Impact Type: Direct exposure to pollutant

Key Concerns:

Exposure to raised levels of nitrogen oxides can interfere with the plant's metabolism, which has the effect of reducing photosynthetic activity and therefore growth (Angold 1997). Morgan et al. (1992) have shown that Pleurozium schreberi is susceptible to disruption of its metabolism when exposed to high NOX concentrations (35 nl l-1 NO2). However, plants can recover normal rates of metabolism after a pollution free period (Morgan et al. 1992).

NOx :: Heather or Ling

Impact Type: Direct exposure to pollutant

Key Concerns:

Work by Caporn et al. (2000) has shown that Calluna exposed to NO2 and SO2 throughout the growing season caused an increase in both root and shoot growth. However this was offset by a increased risk of damage by frost and an imbalance in root/shoot growth make the plants more vulnerable to water stress.

Additional Comments:

NOx :: Ferns (general)

Impact Type: Direct exposure to pollutant

Key Concerns:

Studies by Ashenden et al. (1990) and Lawrence & Ashenden (1993) have shown that direct exposure to NO2 may affect the growth and reproduction of fern species. It is possible that damage to some species of fern can occur at concentrations of NO2 which are low relative to concentrations known to cause damage in higher plants.

Additional Comments:

Pages

Subscribe to RSS - Nitrogen Oxides (NOx)

This page was accessed on Tuesday, November 20, 2018 12:15