Few branches of the biological sciences have developed to such an extent as has ecology in the recent decades. The successful development of this science is directly related to need to create a sound scientific basis by which we can control our diminishing natural resources and integrate this with the control of biological systems of the component species. Studies on the bioenergetics of ecosystems, as well as on the home ostatic mechanisms functioning at the populations and biocenoses levels are of great importance in this respect. The results of these studies are very significant in forestry management which deals with multiannual tree communities - forest stands. It is particularly important in this of the necessity for the possible respect for economic planning, in view prolonged maintenance of forest biocenoses as stable systems. Neither in the present nor in the immediate future can be protection of forest ecosystems consisting of natural plant and animal communities be achieved by the cultivation of resistant forms or the intensification of chemical intervention.

Inhalt

1. Species and Populations of Insects and their Basic Associations with the Forest Environment.- 2. Influence of Abiotic Environmental Factors On Forest Insects.- Influence of solar radiation and atmospheric factors.- Influence of soil factors on insects.- 3. The Role of Nutrient Factors in the Life of Forest Insects.- 3.1. General characteristics of trophic relationships.- 3.2. Nutrient relationships of phytophages.- 3.3. Feeding relationships among zoophages.- 3.4. Characteristics of saprophages.- 4. Intraspecific Relationships of Forest Insects.- Integration of populations.- Structure and function of the population.- Population dynamics.- 5. Causes and Course of Changes in the Abundance Of Insect Populations.- Development of opinions on the causes of changes in abundance.- Factors determining the course of changes in abundance.- 6. Insects in Forest Biocenoses.- Entomocenoses, associations and communities of insects.- Insects in the spatial and time structure of forest biocenoses.- Insects in the functioning of forest biocenoses.- 7. Characteristics of the Forest Entomofauna Of Poland.- 7.1. History of the forest entomofauna of Poland.- 7.2. Problems of regionalization.- 7.3. Characteristics of the entomofauna of Polish forests.- 8. Human Influence on Forest Entomocenoses.- General regularities of the processes of anthropization of the forest entomofauna.- Influence of antropogenous factors not associated with forest management on the entomocenosis.- Influence of forest management on the entomofauna.- 9. Problems of the Development of Entomocenoses Under Reforestation Conditions.- 9.1. Waste-heaps and dumping grounds.- 9.2. Areas poisoned by industrial air pollution.- 9.3. Dune areas.- 9.4. Afforested old farmland.- References.- Index of latin names of Invertebrata.