Is the rare biosphere real or a technical artifact? A case study involving a multi-year deep subsurface time series

Cara Magnabosco1, Maggie Lau2, Melody Lindsay3, Rose Alleva4, Ramunas Stepanauskas5, Steven Shivambu6,7, Sihle Maphanga6,7, Esta van Heerden8 and Tullis C Onstott2, (1)Simons Foundation, New York, NJ, United States, (2)Princeton University, Department of Geosciences, Princeton, NJ, United States, (3)Princeton University, Princeton, United States, (4)Princeton University, Princeton, NJ, United States, (5)Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States, (6)Sibanye Gold Ltd., Welkom, South Africa, (7)Gold Fields Ltd., Welkom, South Africa, (8)University of the Free State, Department of Microbial, Biochemical and Food Technology, Bloemfontein, South Africa
Abstract: