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Characterisation of floating and settled granules according to (A) the settling velocity (n = 341); (B) density (n = 341); (C) concentrations of a range of long-chain fatty acids (LCFA; n = 3); bacterial and archaeal qPCR gene copy numbers from (D) DNA (n = 6) and (E) cDNA (n = 6). Lines for (A–E) connect two categories where the differences were significant with *(p < 0.05), **(p < 0.01), or ***(p < 0.001).
