Our annual workgroup seminar took place on 6th-7th December in Kadrina manor in Tartu county. The topic of the seminar was 'Macroecology of biodiversity belowground'. From our workgroup Meelis, Oscar, Bruno, Carlos and Enrico gave presentations, and we also had two guest talks by Triin Reitalu from Landscape Biodiversity Group and Tanel Vahter from Plant Ecology Laboratory. All the talks were very interesting and covered bacterial, fungal and plant taxonomic groups.