Séminaire Karina Engelbrecht Clemmensen

Karina Engelbrecht Clemmensen (https://www.slu.se/en/cv/karina-engelbrecht-clemmensen/), professeur au département Forest Mycology and Plant Pathology , Swedish University of Agricultural Sciences (SLU) à Uppsala, sera parmi nous les lundi 9 et mardi 10 avril 2018. Ses travaux portent sur la séquestration du carbone dans les sols, plus précisément elle s'intéresse au rôle des champignons dans ce processus en forêt boréale et dans la toundra arctique ainsi qu'à à l'importance des interactions entre les différentes guildes de champignons (saprophyte, mycorhiziens, pathogènes, etc) pour  la régulation des flux de nutriments.

"In a global perspective, northern arctic and boreal biomes act as major belowground carbon sinks. However, large variation in carbon stocks exists among northern ecosystems, and a working hypothesis is that this variation is driven by the relative dominance of the three major fungal guilds – the saprotrophic, ectomycorrhizal and ericoid mycorrhizal fungi. In this seminar, I will present data from manipulative field studies in boreal forest and arctic tundra in which we transplanted organic substrates vertically across soil profiles and horizontally between ecosystem types in order to test relative importance of different fungal groups as drivers of decomposition. I will also present data from recent studies linking phylogenetic and functional shifts in fungal communities to ecosystem properties along forest productivity, fertility and carbon storage gradients."