Fig. 3

Abundance of bacteria, archaea, and fungi in frass and intestinal samples of black soldier fly larvae reared on chicken feed diet (CD), fly diet (FD) and FD supplemented with 4% biochar (FD + BCH) or with 3.6% single-superphosphate (FD + SSP) recyclates. The boxes give the 25th to 75th percentiles, the line the median, the diamond the mean, the whiskers the minimum and maximum values and the circles the outliers. abc and ABC indicate significant differences (P < 0.05) between feeding substrates within frass or larvae and for the same feeding substrate between frass and larvae, respectively