Supporting information:
Table S1: The mean seasonal distribution of the contribution (%) of chlorophyll a size classes (pico: pico chlorophyll a, nano: nano chlorophyll a and micro: micro chlorophyll a) at KH and AS in 2018 and 2019.
KH AS
Spring Summer Fall Winter Spring Summer Fall Winter 2018
pico 41 12 49 6 52 10 60 15 72 03 62 06 60 12 68 22 nano 32 13 26 10 25 07 22 8 24 01 28 10 20 4 16 04 micro 27 21 25 15 23 13 18 20 4 02 10 05 20 14 16 22 2019
pico 49 06 54 6 62 12 57 14 67 04 51 15 64 08 77 09 nano 38 09 25 1 23 11 23 10 25 05 29 13 17 03 19 09 micro 13 04 21 5 15 15 20 18 08 06 20 05 19 11 04 01 1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Table S2: The mean seasonal distribution of the contribution (%) of viruses subgroups (V1; low, V2; medium and V3; high nucleic acid content), at KH and AS.
KH AS
Spring Summer Fall Winter Spring Summer Fall Winter 2018
V1 62 03 55 08 51 10 58 08 51 03 52 03 50 06 51 12 V2 33 03 35 05 39 10 34 04 38 03 37 07 41 04 37
08 V3 05 01 10 03 10 03 08 04 11 02 11 04 09 01 12
05 2019
V1 33 05 36 05 33 01 37 08 26 08 26 05 43 08 30 17 V2 64 04 58 03 60 03 58 13 64 05 61 03 34 11 56
16 V3 03 01 06 02 7 02 05 05 10 03 13 03 23 03 14
02 20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
Figure S1: Temporal variations of temperature at KH (left panels A and B) and AS (right panels C and D).
A
C Temperature (oC)
2 2 2 4 2 6 2 8 3 0 3 2 3 4 3 6
3 9 . 0 3 9 . 5 4 0 . 0 4 0 . 5 4 1 . 0
Salinity
2 0 1 8 2 0 1 9
0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 3 5 0
D a y o f t h e y e a r
C D
2 0 1 8 B 2 0 1 9
0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 3 5 0
D a y o f t h e y e a r
K H A S
39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57
Figure S2: Temporal variations of inorganic nutrients at KH (left panels) and AS (right panels);
nitrate and phosphate (KH: A and C respectively, and AS: B and D respectively), DOC (KH: E and AS: F), DON (KH: G and AS: H) and total chlorophyll a (KH: I and AS: J).
E
Nitrate (µmol L-1)
0 1 2 3 4
5 2 0 1 8
2 0 1 9
Phosphate
0 . 0 0 0 . 0 2 0 . 0 4 0 . 0 6 0 . 0 8 0 . 1 0 0 . 1 2
(µmol L-1)
C
DOC (µmol C L-1)
4 0 6 0 8 0 1 0 0 1 2 0 1 4 0
1 6 0 E
0 8 1 6 2 4 3 2
DON (µmol N L-1)
G
0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 3 5 0
D a y o f t h e y e a r Total Chlorophyll a (µg L-1)
0 0 . 1 0 . 2 0 . 3 0 . 4 0 . 5 0 . 6 0 . 7
0 . 8 I
2 0 1 8
2 0 1 9 B
D
F
H
0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 3 5 0
D a y o f t h e y e a r
J
K H A A S
58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
Figure S3: Temporal variations of bacteria:chlorophyll a ratios at KH (left panels, A) and AS (right panels, B).
Bacteria:chlorophyll a (cellsg Chla-1) 0 1x106 2x106 3x106 4x106 5x106 6x106 7x106 8x106
0 50 100 150 200 250 300 350
Day of the year 0 50 100 150 200 250 300 350
Day of the year 2 0 1 8
2 0 1 9 2 0 1 8
2 0 1 9
A B
K H A S
77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
Figure S4: Relationships between temperature and virus to bacteria ratio (VBR) at KH. Fitted line represents the OLS linear regression (coefficient of determination and significance level provided). Data pooled from the two years.
96 97 98 99 100 101 102
