A number of sudies (Dohmen et al. 1984, Mansfield & Freer-Smith 1981) have shown that plants that had been fumigated with SO2 and NO2 were more prone to aphid attack, and that aphid productivity was higher as a result of changes in the amino acid composition of the plants.
Bolsinger et al. (1992) found that aphids feeding on plants exposed to ozone show increased rate of growth and development. They link this to enhanced food quality and changes in amino acids in the plants, due to ozone stress. The benefits to Aphis imply that there are larger negative effects on the host plants (Bell et al. 1993).
There is evidence from research work in Germany that increased nitrite concentrations have a detrimental effect on the growth and repoduction of freshwater sponges (Kahlert & Neumann 1997). However there is no published research available for Britain and Northern Ireland.
There is evidence that acidification of fresh water has a negative effect on the growth and reproduction of various species of freshwater sponges from Germany and Norway (Kahlert & Neumann 1997, Okland & Okland 1996). However there is no published research available for Britain and Northern Ireland.
Post updated: Wed, 10/08/2011 - 15:13
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