Acknowledgements
We would like to thank to Joana Pinto and Joana Veríssimo for their help in the lab. The study was funded by Fundação para Ciência e Tecnologia (FCT) (Project LTER/BIA-BEC/0004/2009), NORTE2020 (Project NORTE-01- 0145-FEDER-AGRIGEN), EDP Biodiversity Chair, and the ERA Chair in Environmental Metagenomics (EU Horizon 2020 research and innovation programme grant agreement No 668981). FCT/MEC and POPH/QREN/FSE funded L.P.S. (CEECIND/02064/2017), V.A.M. (PD/BD/113462/2015), and R.J.L. (SFRH/BPD/84141/2012 and Transitory Norm contract DL57/2016/CP1440/CT0006). PB was supported by the EDP Biodiversity Chair. All work complied to Portuguese laws and was performed under the licenses given by ICNF, ringing permits number 130/2014, 137/2015 and 140/2016.