Table 2.
Average dry biomass (g) of the different functional groups of macroalgae for the winter and summer months in the locality of Puerto del Hambre and Otway Sound and average relative abundance (%) of the different functional groups of macroalgal found in the gut contents of the two Nacella species. The values correspond to means ± DS.
| Puerto del Hambre | Macroalgae (g) | N. deaurata (%) | N. magellanica (%) | |||
|---|---|---|---|---|---|---|
| winter | summer | winter | summer | winter | summer | |
| Thin sheet-like forms | 0.64±0.11 | 1.87±0.51 | 3±1 | 8.55±1.9 | 0.55±0.28 | 4.55±1.97 |
| Thin filaments | 2.51±1.19 | 3.95±1.01 | 11±2.3 | 21.55±4.6 | 3.22±1.4 | 4.55±2.28 |
| Corticated filaments | 1.09±0.3 | 1.67±0.50 | 6±2.6 | 5.11±1.44 | 2.33±1.3 | 2.77±2.43 |
| Cylinder-like forms | 1.96±0.65 | 8±2.36 | 1±0.3 | 5.44±1.5 | 5.88±2.56 | 9.11±1.57 |
| Coenocytic forms | 0.006±0.0001 | 0.12±0.12 | 0 | 0 | 0 | 0 |
| Cushion-like forms | 0.05±0.04 | 0 | 0 | 0 | 0 | 0 |
| Leathery macrophyte | 4.34±2.19 | 4.14±1.70 | 0 | 3.33±1.0 | 0.44±0.30 | 3.55±1-29 |
| Otway Sound | ||||||
| Thin sheet-like forms | 2.14±0.66 | 1.69±0.58 | 0.22±0.15 | 0 | 0.56±0.56 | 1.22±0.49 |
| Thin filaments | 0.78±0.62 | 0.42±0.13 | 8±2 | 12.56±3.46 | 1.44±0.73 | 15.56±3.88 |
| Corticated filaments | 8.99±2.58 | 2.81±1.04 | 22.67±3.76 | 31±4.86 | 8±2.07 | 3.33±1.57 |
| Cylinder-like forms | 3.39±1.19 | 8.59±1.86 | 1.56±0.84 | 8.44±2.89 | 3.33±1.01 | 7.78±1.85 |
| Coenocytic forms | 0 | 0.29±0.29 | 0 | 0 | 0 | 0 |
| Cushion-like forms | 0 | 0.002±0.002 | 0 | 0 | 0 | 0 |
| Leathery macrophyte | 3.56±1.23 | 31.98±7.03 | 0 | 1.22±0.52 | 0 | 1.78±0.59 |