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Table 1 Main characteristics of lakes sampled in the present study

From: Microdiversity and phylogeographic diversification of bacterioplankton in pelagic freshwater systems revealed through long-read amplicon sequencing

Lake Region Origin Surface area (km2) Surface elevation (m) Maximum depth (m) Water retention time (y) Mixing regime Trophic state Sampling date Sampling depth (m)
Mashu (MA) Japan (Hokkaido) Caldera 19.2 351 211 200 Dimictic Oligotrophic 2015 August 26–29 1.5, 200
Kusharo (KU) Japan (Hokkaido) Caldera 79.6 121 118 12 Dimictic Oligotrophic 2015 August 25 1.5, 50
Toya (TO) Japan (Hokkaido) Caldera 70.7 84 180 9 Dimictic Mesotrophic 2015 September 24 5, 150
Inawashiro (IN) Japan (Honshu) Tectonic 103.3 514 94 5.4 Monomictic Oligotrophic 2015 October 30 5, 80
Chuzenji (CH) Japan (Honshu) Dammed 11.8 1,269 163 5.9 Dimictic Oligotrophic 2015 October 21 5, 120
Sai (SA) Japan (Honshu) Dammed 2.1 900 72 1.6 Monomictic Oligotrophic 2015 September 8 10, 50
Motosu (MO) Japan (Honshu) Dammed 4.7 900 122 6.5 Monomictic Oligotrophic 2015 September 7 10, 100
Biwa (BI) Japan (Honshu) Tectonic 670.3 85 104 5.5 Monomictic Mesotrophic 2015 December 9, (2010 Oct. 19)† 2, 60 (5, 50)†
Ikeda (IK) Japan (Kyushu) Caldera 10.9 66 233 33.5 Holo-oligomictic Mesotrophic 2015 September 17 5, 70
Zurich (ZU) Europe (Switzerland) Glacial 88.0 406 136 1.4 Holo-oligomictic Mesotrophic 2017 October 25 5, 60
Maggiore (MG) Europe (Italy/Switzerland) Glacial 213.0 193 370 4.1 Holo-oligomictic Oligo-mesotrophic 2017 October 16 5, 100
  1. Detailed data are available in Table S1
  2. †Sampling date and depths in 2010 are shown in parentheses
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