Knowing topsoil to manage ecosystems

IUSS24-ABS-5092-94-133542-20230627120434 SESSION DESCRIPTION: In this session we will present survey work on topsoil related to the functioning of forest, agricultural, grassland and urban ecosystems. On the one hand we will talk about fungi, algae and other soil microorganisms, but also arthropods and earthworms; on the other we will deal with forest management considering together the dynamics of both the forest stand and the topsoil. These are researches based on historical results but which address the difUcult problem of functional soil biodiversity. The number of organisms involved matters less than the quality of their interactions. From a forestry point of view and in contrast with modern expectations, one of the most important issues is the need to lengthen the wood production cycles, taking into consideration the soil quality restoration that occurs at the end of the forest cycle. The intervention of external experts depends on the possibility of connecting remotely. Specialists of rare and important disciplines have given their availability.