FORSEE : Indicateur évalué
Indicator 2.4.2: Damage Intensity | |||||||||||
Costs Total Cost €12147 Shared Cost €10152 Marginal Cost €1995 Total Cost/ha €0.34 These cost include:
| Results Figure 2.4.2a: Intensity of the damage | ||||||||||
Remarks In figure 6 it can be seen that although the main damage type was defoliation, the mean level of defoliation was quite high (39%) in comparison to levels recorded by Coillte in their forest health plots where mean defoliation was in Irish Level 1* plots was 14.9% in 2004 and 15.9% in 2005 and defoliation in both years was similar to the long-term average of 15.6% (Anon, 2005). This would indicate that defoliation is a concern. This information is useful to give a more accurate description of the intensity level of the different damage types. Green or yellow discolouration, the second major damage type in the pilot zone, had a mean discolouration of 55% which is quite high and would have implications for tree growth. Mean discolouration figures in level 1 Irish plots for 2004 and 2005 were 5.2% and 6.4% respectively and were lower than the long-term average of 7.9%. Death to the branches and shoots had a mean level of 20% and would not be a major concern. * Irish Level 1 plots form part of a network of 6,000 plots across Europe for monitoring forest health. | |||||||||||
Problems and Improvements Again the analysis was mainly on trees within one age class (0-20) and therefore has limitations for both the intensity level and the type of damage. | |||||||||||
Remarks and Conclusions The damage intensity has been useful in assessing the level of damage to the trees and therefore gives a more accurate representation of forest health in the region. This is a useful tool for forest managers. | |||||||||||
Project co-financed by European Union A community initiative ERDF INTERREG the IIIB Atlantic Area |