Dear colleagues, On behalf of the session’s organizers, I would like to draw your attention to the Technical Session 1.8 (see below description) at IUFRO World Congress (Stockholm 23-29 June, 2024) . If you work with complex forests structures feel free to submit your abstract until June 2nd at https://www.appinconf.com/kas/Abstract?projectName=iufro2024abstracts All the best, Andrés Session’s organizers: Andrés Bravo-Oviedo, Linda Nagel, Gary Kerr, Magnus Löf, William Keeton, Miren del Rio, Andrej Boncina, Felipe Bravo, Alfredo di Filippo, Mark J. Ducey, Hans Pretzsch T1.8 Complex forests: Understanding and management of multiple species, structures and ecosystem services. Forestry faces important challenges in the decades ahead. The quick global change affecting the climate system, economy and biodiversity has put forests in the front line of mitigation and adaptation policies across the world with different approaches. In temperate regions forest researchers and practitioners have already understood that more structurally and compositional diverse forest stands are essential to meet climate and bioeconomy targets. This session will present current knowledge on complex forest structures research and practice. It will cover silvicultural and ecological aspects of multiple species and multi-aged stands dynamics as well as the consequences of increasing complexity for forest functioning, ecosystem services provision and biodiversity conservation. The session will also deal with measuring and modelling challenges that foresters and researchers are currently confronting. A final discussion among moderators, presenters and public will summarize the future of complex forest structures within the forestry discipline and their benefits for the bioeconomy. Presentations for oral contributions and posters are welcome on the following topics: (i) Multiple species silviculture; (ii) Multi-aged structure silviculture; (iii) Functions, services and biodiversity and (iv) Measuring and Modelling the forest complexity. The session is organized by the following IUFRO research groups RG1.09 Ecology and silviculture of mixed forests, RG1.05.00 - Uneven-aged silviculture; and units 1.01.06 - Ecology and silviculture of oak; 1.01.07 - Ecology and silviculture of beech; 1.01.09 - Ecology and silviculture of fir; 4.01.02 – Growth models for tree and stand simulation; 8.01.01 – Old growth forests and forest reserves. Dr. Andrés Bravo-Oviedo Senior Research Scientist (Científico Titular) Coordinator of IUFRO RG 1.09.00 Ecology and Silviculture of Mixed Forests ( <http://www.iufro.org/> www.iufro.org) Reviews Editor European Journal of Forest Research <https://www.springer.com/journal/10342> Adaptive Silviculture <https://www.researchgate.net/lab/Adaptive-Silviculture-and-Applied-Forest-E cology-ASAFE-Lab-Andres-Bravo-Oviedo> & Applied Forest Ecology Lab (ASAFE-Lab) Dpt. Biogeography and Global Change National Museum of Natural Sciences – CSIC Serrano 115 bis 28006 Madrid (ES) Phone: +34 91 333 30 82 ext. 443 440 New number! <https://www.mncn.csic.es/es/quienes_somos/andres-bravo-oviedo> www.mncn.csic.es Professional profile visit: https://www.mncn.csic.es/es/quienes_somos/bravo-oviedo-andres