Mr. Gerard Murphy:

Over the past 50 or 60 years a lot of research has been done on the appropriate species for different sites. There has been a lot of science built up over the years on the appropriate species. If one goes into very difficult sites, such as wet or mineral sites, only certain types of species will be appropriate. In the richer mineral sites, there is much greater diversity of species. In the very marginal, upland areas, the species are very limited. There has been a lot of research built up over the years to identify the appropriate species. That has to then be looked at from an environmental point of view. Silviculture may be possible but we have to look at the environmental and commercial aspects. Certain trees cannot be planted in certain areas. A species might deliver environmentally but commercially it might not be the appropriate species to plant.