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Table 1 Description of the location and oceanographic properties of sampling sites

From: Genomic and metatranscriptomic analyses of carbon remineralization in an Antarctic polynya

  Peak-1 Declining-1b Declining-2 Peak-2b Sea iceb
Sampling date 2010/2011 cruise; 07 Jan 2011 2011/2012 cruise; 14 Feb 2012 2011/2012 cruise; 29 Feb 2012 2013/2014 cruise; 03 Jan 2014 2010/2011 cruise; 05 Jan 2011
Sampling pointa (depth) Polynya (30 m) Polynya (20 m) Polynya (25 m) Polynya (20 m) Under sea ice (2 m)
Abundance of bacteria (×106 16S rRNA gene copies/mL) 2 25 9.7 7.2 1.4
NO2- + NO3- (μmol/L) 15.0 9.6 16.6 14.9 26.6
NH4+ (μmol/L) 0.5 0.3 0.6 0.03 1.6
PO42- (μmol/L) N/D 1.0 1.4 1.4 N/D
SiO2 (μmol/L) 79.4 74.7 77.4 84.8 76.7
Chl-a (mg/L) 9.5 5.9 2.4 5.8 1.0
Phytoplankton composition (μg C/L)
Phaeocystis antarctica 279.8 174.0 38.5 255.3 6.0
 Autotrophic picoplankton 2.4 10.0 1.7 0.02 3.7
 Autotrophic flagellates 6.7 2.8 4.4 3.6 0.9
Diatom 83.0 16.6 15.6 7.9 67.0
Total carbon (μg C/L) 367.6 203.3 60.1 266.8 77.6
Carbon to Chl-a 38.69 34.6 25.09 46 81.7
  1. aGPS position: polynya center station, 73.30 (LAT) -113.02 (LONG); sea ice station 72.30 (LAT), -112.44 (LONG)
  2. bUsed for metagenomics and metatranscriptomic analyses