[1] Univ British Columbia, Dept Earth Ocean & Atmospher Sci, Vancouver, BC V6T 1Z4, Canada
[2] Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada
[3] Univ British Columbia, Dept Microbiol & Immunol, Vancouver, BC V6T 1Z4, Canada
[4] Canadian Inst Adv Res, Integrated Microbial Biodivers Program, Toronto, ON M5G 1Z8, Canada