[A-HW18] Material transportation and cycling at the land-sea interface: from headwaters to the ocean

[AHW18-P18] Community structure of airborne micro-organisms flowing into forests by rainfall.

*Sakae Horisawa¹, Yuko Ito², Toru Okamoto², Keiji Takase³, Masahiro Kobayashi² (1.Kochi University of Technology, 2.Forestry and Forest Products Research Institute, Japan, 3.Ishikawa Prefectural University)

Keywords:Rainfall monitoring, Forest environment, Airborne microbes, Amplicon sequencing

There is still little research on micro-organisms flowing into Japanese forests with aerosols and other substances from the continent. Airborne micro-organisms are thought to be transported with fine dust and aerosols and enter forests by rainwater. In this study, we collected rainwater from outside and inside forests, soil passages, and stream water at two sites across a mountain range in Japan Island; one site (Ishikawa Prefecture) was heavily influenced by transboundary air pollutant inputs from the continent, and the other site (Ibaraki Prefecture) was heavily influenced by inputs from the Tokyo metropolitan area. Microbes in the water samples were collected to extract the microbe's DNAs and community structures of bacteria and fungi were examined by amplicon sequencing.