Table 3.
Number of OTUs of T-RFLP (forward primer) and RAPD-PCR data detected within the different water masses north, within and east of the Vema Fracture Zone in the (sub)tropical North Atlantic Ocean.
| BacFwd | ArchFwd | VirCRA | VirOPA | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg (SD) | Range | N | Avg (SD) | Range | N | Avg (SD) | Range | Avg (SD) | Range | N | |
| NORTHERN SECTION | |||||||||||
| 100 m | 19.50 (−) | 9–30 | 2 | 6.75 (1.89) | 4–8 | 4 | 9.75 (1.26) | 8–11 | 12.25 (3.30) | 10–17 | 4 |
| OMZ | 11.25 (10.21) | 3–25 | 4 | 7.33 (2.52) | 5–10 | 3 | 9.50 (1.91) | 7–11 | 12.50 (1.29) | 11–14 | 4 |
| AAIW | 7.67 (3.51) | 4–11 | 3 | 6.00 (1.73) | 5–8 | 3 | 8.00 (1.41) | 6–9 | 12.50 (2.38) | 9–14 | 4 |
| UNADW | 15.67 (6.51) | 9–22 | 3 | 7.00 (0.82) | 6–8 | 4 | 10.00 (1.63) | 8–12 | 12.50 (1.29) | 11–14 | 4 |
| LNADW | 17.25 (6.24) | 9–24 | 4 | 5.50 (1.29) | 4–7 | 4 | 9.25 (2.06) | 7–12 | 10.50 (5.07) | 3–14 | 4 |
| AABW | 15.67 (8.33) | 9–25 | 3 | 8.00 (3.00) | 5–11 | 3 | 10.25 (1.71) | 8–12 | 10.25 (1.71) | 8–12 | 4 |
| VEMA FRACTURE ZONE | |||||||||||
| 100 m | 22.67 (1.53) | 21–24 | 3 | 8.00 (1.00) | 7–9 | 3 | 9.33 (3.06) | 6–10 | 8.67 (1.15) | 8–10 | 3 |
| OMZ | 15.33 (1.15) | 14–16 | 3 | 7.00 (−) | 7 | 2 | 8.00 (5.20) | 2–11 | 10.00 (2.00) | 8–12 | 3 |
| AAIW | 13.33 (0.58) | 13–14 | 3 | 8.00 (2.83) | 6–10 | 2 | 6.67 (3.21) | 3–9 | 8.33 (2.08) | 6–10 | 3 |
| UNADW | 12.00 (−) | 9–15 | 2 | 8.50 (−) | 7–10 | 2 | 9.00 (5.20) | 3–12 | 10.00 (3.00) | 7–13 | 3 |
| LNADW | 12.67 (3.79) | 10–17 | 3 | 3.50 (−) | 2–5 | 2 | 6.33 (3.79) | 2–9 | 9.00 (3.46) | 5–11 | 3 |
| AABW | 16.00 (3.00) | 13–19 | 3 | 6.33 (1.15) | 5–7 | 3 | 7.33 (2.08) | 5–9 | 11.33 (4.73) | 6–15 | 3 |
| EASTERN SECTION | |||||||||||
| 100 m | 22.25 (2.75) | 19–15 | 4 | 5.75 (1.26) | 4–7 | 4 | 14.50 (2.89) | 11–18 | 12.75 (3.20) | 8–15 | 4 |
| OMZ | 19.50 (1.73) | 17–21 | 4 | 6.00 (1.41) | 4–7 | 4 | 16.00 (2.16) | 14–19 | 10.00 (4.08) | 4–13 | 4 |
| AAIW | 16.50 (6.40) | 10–22 | 4 | 6.25 (0.96) | 5–7 | 4 | 11.00 (2.94) | 7–14 | 6.50 (3.11) | 3–10 | 4 |
| UNADW | 19.50 (6.19) | 11–25 | 4 | 5.75 (0.96) | 5–7 | 4 | 12.00 (1.15) | 11–13 | 10.50 (4.65) | 3–15 | 4 |
| LNADW | 25.00 (5.06) | 19–32 | 4 | 4.00 (1.41) | 3–6 | 4 | 11.25 (3.30) | 8–15 | 10.50 (5.20) | 3–15 | 4 |
| AABW | 14.25 (5.50) | 7–19 | 4 | 4.25 (0.96) | 3–5 | 4 | 12.25 (2.87) | 9–16 | 8.25 (3.10) | 4–11 | 4 |
Abbreviations: Avg, average number of OTUs; SD, standard deviation; AABW, Antarctic Bottom Water; AAIW, Antarctic Intermediate Water; ArchFwd, archaeal forward primer; BacFwd, bacterial forward primer; LNADW, Lower North Atlantic Deep Water; N, number of samples; OMZ, oxygen minimum zone; OTU, operational taxonomic unit; UNADW, Upper North Atlantic Deep Water; VirCRA, viral primer CRA-22; VirOPA, viral primer OPA-13. Numbers in bold are significantly different (p ≤ 0.05).