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. 2023 Nov 28;89(12):e01393-23. doi: 10.1128/aem.01393-23

TABLE 1.

Characteristics of the sampling sites, including temperature (ºC), salinity, dissolved oxygen (DO) (mg L−1), Chl a concentration (μg L−1), NO3−-N (μmol L−1), NO2−-N (μmol L−1), NH4+-N (μmol L−1), PO43− (μmol L−1), DSi (μmol L−1), and the abundance of heterotrophic bacteria, Prochlorococcus, Synechococcus, and Pico-eukaryotes

Surface Bottom
Nearshore Offshore Slope Nearshore Offshore Slope
S01 S14 S15 S03 S12 S17 S05 S10 S07 S08 S21 S01 S14 S15 S03 S12 S17 S05 S10 S07 S08 S21
Temperature (°C) 28.78 29.11 28.73 28.19 28.55 28.85 28.30 28.13 27.51 27.92 28.46 28.70 28.75 28.68 21.92 24.52 23.44 20.50 20.63 6.71 4.64 4.55
Salinity (PSU) 33.46 33.66 33.05 33.58 33.61 33.77 33.62 33.86 33.88 33.65 33.64 33.50 33.65 33.84 33.47 34.28 34.48 34.56 34.60 34.42 34.51 34.51
Depth (m) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 33.0 38.0 30.0 90.0 74.0 81.0 139.0 104.0 650.0 950.0 920.0
DO (mg L−1) 6.26 6.23 6.42 6.18 6.54 6.40 6.42 6.49 6.61 6.51 6.34 6.35 6.05 6.10 5.26 5.77 5.07 5.40 4.56 3.14 3.03 2.94
Chl a (μg L−1) 0.37 0.35 0.52 0.18 0.13 0.13 0.14 0.16 0.12 0.09 0.11 0.54 0.50 0.59 0.30 0.65 0.73 0.10 0.29 0.00 0.00 0.00
NO3—N (μmol L−1) 2.12 0.26 3.73 0.14 0.35 0.23 0.31 0.10 0.29 0.28 0.32 0.90 0.42 0.31 6.66 1.54 2.49 10.11 8.58 34.72 38.07 38.25
NO2−-N (μmol L−1) 0.02 0.04 0.37 0.00 0.01 0.00 0.03 0.01 0.04 0.02 0.01 0.05 0.21 0.07 0.13 0.92 1.12 0.12 0.06 0.08 0.06 0.02
NH4+-N (μmol L−1) 0.13 0.07 0.11 0.05 0.04 0.14 0.11 0.02 0.02 0.02 0.01 0.45 0.37 0.23 0.27 0.04 0.06 0.10 0.03 0.03 0.08 0.04
PO43− (μmol L−1) 0.02 0.03 0.03 0.01 0.01 1.34 0.00 0.01 0.01 0.00 0.00 0.08 0.08 0.04 0.43 0.23 0.32 0.67 0.66 2.20 2.57 2.14
Dsi (μmol L−1) 2.75 3.62 3.01 1.05 1.28 0.71 1.23 1.04 1.25 1.36 1.01 2.76 4.54 4.06 7.75 4.47 8.97 10.21 11.52 68.69 75.34 89.13
Heterotrophic bacteria
(×105 cells mL−1)		 5.76 5.91 8.97 3.78 4.37 3.35 3.65 3.32 4.56 3.34 3.65 3.20 3.08 4.67 2.85 4.07 4.64 1.15 2.21 0.24 0.24 0.27
Prochlorococcus
(×102 cell mL−1)		 7.41 44.72 44.33 2.50 61.29 24.82 4.17 7.31 201.9 89.90 116.2 5.56 40.74 70.74 50.27 115.74 142.03 17.68 46.76 1.39 0.74 0.76
Synechococcus
(×103 cell mL−1)		 39.1 30.47 37.88 6.40 2.48 8.89 4.58 3.30 5.39 3.47 1.15 26.06 25.29 25.26 1.35 3.61 3.55 0.15 0.50 0.03 0.03 0.10
Pico-eukaryotes
(×102 cell mL−1)		 8.33 32.03 10.46 3.33 20.28 4.17 4.63 17.41 3.24 1.57 1.85 17.13 65.56 48.51 15.47 21.76 32.56 2.22 19.07 0.09 0.09 0.46