Table 1.
Abiotic data for different regions and depth layers
| Depth range | Region | Mean (SD)a |
|||||
|---|---|---|---|---|---|---|---|
| Salinity | Pot-temp (°C) | Pot-sigma (kg m−3) | Fluorescence (RFU) | Oxygen concn. (μmol kg−1) | Turb (FTU) | ||
| Epipelagic (5–200 m) | Ef | 36.77 (0.19) | 18.6 (1.1) | 26.5 (0.1) | 0.22 (0.14) | 209 (9) | 5.3 (2.4) |
| Uw | 36.70 (0.18) | 19.3 (1.5) | 26.2 (0.3) | 0.24 (0.23) | 178 (27) | 6.0 (3.9) | |
| Oc | 37.16 (0.24) | 20.8 (1.3) | 26.2 (0.2) | 0.15 (0.06) | 201 (9) | 4.3 (1.5) | |
| Mesopelagic (200–1,000 m) | Ef | 35.60 (0.34) | 11.1 (2.6) | 27.2 (0.2) | 0.02 (0.001) | 150 (22) | 2.0 (0.2) |
| Uw | 35.39 (0.34) | 10.2 (2.8) | 27.2 (0.2) | 0.02 (0.001) | 107 (12) | 2.1 (0.6) | |
| Oc | 35.58 (0.42) | 11.2 (3.2) | 27.1 (0.3) | 0.02 (0.001) | 146 (15) | 1.5 (0.2) | |
a
Mean (standard deviation in brackets) salinity, potential temperature (Pot-temp), and potential density (Pot-sigma), fluorescence (relative fluorescence units [RFU]), oxygen concentration, and turbidity (formazin turbidity units [FTU]) in the different regions and depth layers. Ef, eddy field region south of the Canary Islands; Uw, influenced by coastal waters of the NW African upwelling; Oc, open-ocean waters of the NE Atlantic Subtropical Gyre.