Main theoretical and experimental research directions of the Institute are the following:

• Biological animal and plant diversity and ecology;
• Biocenological basis of productivity and stability of coniferous and deciduous forests;
• Structural, functional organization and anthropogenic transformation of tundra and taiga ecosystems;
• Combined effect of small doses of ionizing radiation and other physical and chemical factors on living organisms and natural ecosystems;
• Biologically active compounds in the natural flora and in the introduced plants.