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Description popularizing the research project
No matter if it is a daisy or sequoia, all plants have their own oppressors. The ones that devour or a birch or beech seedling in one bite, as ungulates usually do. Other aggressors employ a different strategy of using assets of the host slowly so as to have them longer for themselves and their offspring. They settle down among the roots, bite through the bark, suck the stem, crawl under epidermis, bite in the buds, annex fruit and seeds for their shelter and forage. From germination till death, for the first warmest months of the year till frost freezes the tissues, or for several hundred years till the wind tips over the rotten trunk, each organ of a plant is in danger of being attacked by relentless 'parasites'.
The horse-chestnut leaf miner (Cameraria ohridella) - an invasive butterfly from Macedonia is currently a real threat to white chestnuts, which are planted in Poland as an ornamental trees. Rapid spread of the butterfly is caused by lack of natural enemies. Cameraria ohridella feeding in the leaf mesophyll damages leaves causing their earlier fall. This caused a progressive reduction in a photosynthetically active leaf area in time and disturbances of physiology. The aim of the study is to demonstrate the relationship between the level of damage to the leaf by the horse-chestnut leaf miner and: . the level of environmental contamination, the procedures used for pest control. For the purpose, we developed a computerized method of leaf surface analysis which calculates the degree of degradation of the leaf lamina.