Abstract. Aspects regarding pest control in forest ecosystems. The following paper is constructed as an essay meant to discuss pest control in forest ecosystems from the point of view of the forest’s multiple functionality. We will highlight the alarming degree of disease spread in Romanian forests and in other European countries where this state of facts has caused massive deforestation. Biotechnical, chemical and biological methods are presented, their advantages and limits, but also the complex or biocenotic method which is the latest method of pest control meant only to reduce the population of insects below the critical level, not to eradicate them entirely.
Key-words: control, pest, forest ecosystem