Table 1. Oxygen consumption rates (MO2, µmoles O2 g−1 h−1) of Limacina helicina antarctica in relation to carbon dioxide treatments presented as means and also normalized to a common body mass of 5 mg assuming a scaling coefficient (b, MO2 = b0Mb) of −0.25.
| Year | Chl a, mg m−3 (±SD) | PCO2 µatm | n | Size Range (mg) | Mean (±SD) | 5 mg (±SD) b = −0.25 |
| 1998–99 | 3.55 (±3.11) | 380 | 12 | 1.5–5.0 | 5.51 (1.52) | 5.20 (±1.39) |
| 2000–01 | 0.85 (±1.14) | 380 | 21 | 2.0–17.2 | 3.78 (0.75) | 3.42 (0.88) |
| 2006–07 | 3.56 (±3.92) | 180 | 7 | 3.8–7.5 | 4.91 (0.81) | 4.99 (0.67) |
| 380 | 15 | 2.4–14.9 | 4.47 (0.90) | 4.76 (1.27) | ||
| 790 | 7 | 2.5–14.1 | 3.48 (0.82) | 3.94 (0.80) | ||
| 1000 | 8 | 3.1–11.0 | 4.37 (0.93) | 4.31 (0.92) | ||
| 1500 | 5 | 5.9–9.6 | 3.39 (0.47) | 3.76 (0.40) | ||
| 2006–07 | (lab starved) | 180 | 7 | 4.4–12.8 | 3.19 (0.43) | 3.43 (0.66) |
| 380 | 13 | 3.4–13.5 | 3.35 (0.77) | 3.82 (0.77) | ||
| 560 | 8 | 4.2–7.6 | 3.61 (0.93) | 3.76 (1.01) | ||
| 790 | 8 | 3.5–10.3 | 3.37 (0.65) | 3.62 (0.67) | ||
| 1000 | 7 | 3.5–10.0 | 3.14 (0.54) | 3.24 (0.48) | ||
| 1800 | 8 | 2.1–8.3 | 3.38 (0.51) | 3.52 (0.51) | ||
| 2007–08 | 1.60 (±2.90) | 380 | 41 | 0.8–10.5 | 4.21 (2.04) | 3.34 (1.43) |
| 1000 | 34 | 1.2–14.4 | 3.43 (0.98) | 3.07 (0.95) |
Chlorophyll a concentrations are also shown.