Table 1. Biochemical parameters correlated with MDS and CARTs analyses for TGP and CH4 production.
| Macroalgae species | Ash | C | GE | H | Total FA | K | N | Sr | PUFA | C 16∶0 | Ca | Na | S | Zn |
| (MJ kg−1 DM) | ||||||||||||||
| Freshwater algae | ||||||||||||||
| Cladophora vagabunda | 158.9 | 380.2 | 16.1 | 57.4 | 49.6 | 33.7 | 54.3 | 0.03 | 21.15 | 8.67 | 4.2 | 2.8 | 11.2 | 0.02 |
| Oedogonium sp. | 64.1 | 447.4 | 19.4 | 66.5 | 57.77 | 13.3 | 49.2 | 0.02 | 35.14 | 11.46 | 2.9 | 0.4 | 2.9 | 0.05 |
| Spirogyra sp. | 167.7 | 372.5 | 15.2 | 57.6 | 27.88 | 5.6 | 14.7 | 0.13 | 16.01 | 7.39 | 16.7 | 38.7 | 3.1 | 0.01 |
| Marine green algae | ||||||||||||||
| Caulerpa taxifolia | 269.6 | 320.2 | 13.1 | 48.1 | 25.5 | 6.4 | 32.5 | 0.07 | 13.27 | 7.81 | 3.8 | 82.4 | 22.1 | 0.01 |
| Chaetomorpha linum | 254.4 | 322.3 | 12.9 | 48.8 | 21.09 | 86.7 | 42.6 | 0.05 | 10.79 | 5.08 | 4.5 | 10 | 21.4 | 0.06 |
| Cladophora coelothrix | 234.1 | 361.4 | 15.3 | 55 | 30.83 | 38.6 | 52.5 | 0.07 | 12.67 | 7.2 | 7.8 | 3.9 | 21 | 0.03 |
| Cladophora patentiramea | 365 | 292.6 | 11.2 | 42.1 | 15.56 | 60.3 | 23.9 | 0.13 | 4.34 | 5.18 | 17.4 | 3.4 | 32.8 | 0.02 |
| Derbesia tenuissima | 77.5 | 449.7 | 20.1 | 66.3 | 48.74 | 9 | 66.1 | 0.03 | 19.16 | 17.29 | 2.7 | 8.2 | 12.3 | 0.03 |
| Ulva sp. | 206.5 | 322.5 | 13.6 | 54.8 | 25.63 | 20.5 | 47.1 | 0.12 | 12.6 | 7.95 | 10.1 | 8.4 | 28.2 | 0.03 |
| Ulva ohnoi | 211.3 | 291.6 | 12 | 55.4 | 14.75 | 21.6 | 43 | 0.05 | 4.3 | 5.37 | 4.5 | 5.4 | 57.5 | 0.04 |
| Brown algae | ||||||||||||||
| Cystoseira trinodis | 266.7 | 317.3 | 12.1 | 46.4 | 18.69 | 85.5 | 18.3 | 1.23 | 6.92 | 6.19 | 16.3 | 17.1 | 13.1 | 0.01 |
| Dictyota bartayresii | 300.7 | 332.8 | 12.9 | 46.8 | 27.01 | 27 | 17.9 | 1.18 | 9.93 | 7.15 | 35.2 | 5.3 | 12 | 0.099 |
| Hormophysa triquetra | 303.1 | 296.9 | 10.7 | 41.7 | 18.77 | 30.8 | 7.9 | 0.91 | 11.15 | 3.4 | 21.5 | 6 | 13.4 | 0.06 |
| Padina australis | 385.6 | 243.4 | 8.7 | 38.6 | 18.39 | 81.3 | 11 | 1.5 | 7.73 | 5.06 | 21.2 | 18.4 | 33.7 | 0.01 |
| Sargassum flavicans | 255.8 | 305 | 11.7 | 46.3 | 13.93 | 78.1 | 8.4 | 1.7 | 5.67 | 3.86 | 20.2 | 11.7 | 9.6 | 0.01 |
| Colpomenia sinuosa | 409.7 | 270.6 | 9.9 | 38.9 | 18.3 | 80.1 | 14.1 | 1.5 | 4.86 | 5.34 | 56.3 | 15.7 | 7.2 | 0.05 |
| Red algae | ||||||||||||||
| Asparagopsis taxiformis | 189.4 | 384 | 16.4 | 58.7 | 27.28 | 14.7 | 55.5 | 0.06 | 10.13 | 10.71 | 6.1 | 12.8 | 26.9 | 0.15 |
| Halymenia floresii | 277.5 | 288.5 | 11.5 | 48.8 | 12.97 | 36.6 | 21.7 | 0.07 | 2.92 | 6.55 | 3.9 | 36 | 55.7 | 0.098 |
| Hypnea pannosa | 473.3 | 220 | 7.5 | 34.9 | 16.06 | 19.3 | 14.3 | 0.44 | 6.37 | 5.16 | 32.2 | 54.4 | 41.6 | 0.02 |
| Laurencia filiformis | 359.8 | 290.7 | 11.5 | 44.5 | 11.99 | 12.3 | 18.9 | 0.31 | 3.34 | 4.19 | 26 | 64 | 27.1 | 0.02 |
| DCS | 199 | 427.8 | 18.6 | 64.1 | 26.51 | 15.9 | 79.6 | 0.01 | 13.21 | 6.64 | 1.9 | 2.1 | 3.1 | 0.05 |
| SEM | 0.36 | 6.66 | 1.11 | 0.1 | 1.29 | 3.09 | 0.23 | 0.74 | 0.8 | 0.34 | 1.49 | 2.43 | 1.7 | 7.35 |
| r | 0.98 | 0.98 | 0.92 | 0.94 | 0.81 | 0.78 | 0.75 | 0.76 | 0.79 | 0.73 | 0.7 | 0.71 | 0.74 | 0.21 |
Parameters were calculated in g.kg−1 DM, unless otherwise stated. For TGP and CH4 production, (n = 3–4). r = Pearson's correlation coefficients from MDS analysis. C, carbon; GE, gross energy content; H, hydrogen, Total FA, total fatty acids; K, potassium; N, nitrogen; Sr, strontium; PUFA, total polyunsaturated fatty acids; C16∶0, palmitic acid; Ca, calcium; Na, sodium; S, sulfur; Zn, zinc; DCS, decorticated cottonseed meal; SEM, standard error mean.