Submitted by Eleanor Campbell on Thu, 11/08/2011 - 09:34
Latin name:
Pteridophytes
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:
Ashenden et al (1990), set a critical level for ferns at 60 nl l-1 (ppb) NO2 in air. Reduction in shoot growth and reproduction was observed.
Critical Load/level:
Critical Load/ Level |
---|
No estimate available |
References:
1990
Effects of nitrogen dioxide pollution on the growth of 3 fern species.
Environmental Pollution
66
301-308
1993
Effects of acidic gases and mists on the reproductive capability of 3 fern species
Environmental Pollution
79
267-270
Species group:
Pollutant: