Table 1. Brief description of the study sites.
| Station | Date | Depth (m) | ML (m) | Temp (°C) | Chl a (μg l−1)a | DOC (μM) | BA (× 108 cells l−1) | BHP (ng C l−1 h−1) | μ (d−1)b |
|---|---|---|---|---|---|---|---|---|---|
| R-2 | 26 Oct | 2450 | 105±15 | 2.1 | 0.3±0.1 | 48±0 | 2.7±0.3 | 2.6±0.1 | 0.02±0.00 |
| A3-1 | 20 Oct | 527 | 168±11 | 1.7 | 0.6±0.2 | 52c | 3.9±0.1 | 5.0±1.6 | 0.02±0.00 |
| A3-2 | 16 Nov | 527 | 153±15 | 2.2 | 2.0±0.3 | 51±2 | 3.2±0.5 | 19.9±3.8 | 0.12±0.01 |
| A3-3 | 19 Jand | 527 | 52±12 | 3.5 | 1.3±0.3 | NA | 4.8±0.2 | 103±5 | 0.42±0.02 |
| A3-4 | 12 Febd | 527 | 84±19 | 3.9 | 1.0±0.1 | NA | 5.7± 0.6 | 69±14 | 0.23±0.04 |
| F-L | 07 Nov | 2690 | 38±7 | 4.2 | 4.0±1.6 | 50±1 | 6.1c | 65.7±1.6 | 0.21c |
| E-1 | 30 Oct | 2050 | 72±38 | 2.5 | 0.9±0.1 | 48±1 | 4.3±0.1 | 15.2±0.7 | 0.07±0.00 |
| E-3 | 04 Nov | 1923 | 38±9 | 2.8 | 0.6±0.1 | 49±1 | 5.1c | 24.9±1.7 | 0.09c |
| E-4E | 13 Nov | 2210 | 74±8 | 3.2 | 1.1±0.0 | 50±2 | 5.6c | 41.5±2.6 | 0.14c |
| E-4W | 10 Nov | 1398 | 61±11 | 2.5 | 1.3±0.1 | 49±0 | 6.0±0.1 | 29.1±3.9 | 0.09±0.01 |
Abbreviations: BA, bacterial abundance; BHP, bacterial heterotrophic production; Chla, chlorophyll a; DOC, dissolved organic carbon; NA, not available; temp, temperature; μ, bacterial growth rate.
For all parameters mean values±s.d. for the mixed layer (ML) are provided.
a
From Lasbleiz et al. (2014).
b
Bacterial growth rate was determined by diving bacterial heterotrophic production by bacterial biomass. To convert bacterial abundance to biomass, a conversion factor of 12.3 fg C per cell was used (Fukuda et al., 1998).
c
Only one data point was available for the ML.
d
Samples were taken during the KEOPS1 cruise in January–February 2005 (Obernosterer et al., 2008).