Please note that this session was withdrawn and is no longer available in the respective programme. This withdrawal might have been the result of a merge with another session.

SSS9.8

EDI
Natural regeneration in a changing environment: plant and soil feedbacks in forest ecosystems.

Natural ecosystems provide the basic conditions without which humanity could not survive. Good and services provided by ecosystems include for example provision of food, fibre and fuel, purification of water and air, cultural and aesthetic benefits, stabilization and moderation of the Earth's climate, generation and renewal of soil fertility, including nutrient cycling or maintenance of genetic resources as key inputs to crop varieties and livestock breeds, medicines, and other products. However, the ability of natural ecosystems to continue performing these services is seriously threatened since plant species diversity or soil are being seriously deteriorated, and in some cases destroyed. Inappropriate silvicultural operations or the lack of natural regeneration may threaten ecosystem persistence. Following tree harvesting, forest stands regenerate through interactions among propagules, including seeds in seed banks and those dispersed into a site. After this disturbance (tree harvesting), the floor and soil environments change radically and factors affecting success of natural regeneration of forest are different. Canopy characteristics, understory vegetation, site factors and individual species performance were recognized to play crucial roles in natural regeneration forest. Natural regeneration is a slow and unpredictable process because of the complex interaction between the success of seedling establishment and site factors. The objectives of this session are to bring together experiences from different parts of the world on plant and soil feedbacks and forest natural regeneration. Session outputs will be very helpful in order to establish future guidelines for forest natural regeneration.

Convener: Manuel Esteban Lucas-BorjaECSECS | Co-conveners: John Bradford, Mehdi Heydari, Alexandra Urza, Oyudari Vova