Fig. 5

Different ARGs and novel ARGs between whooper swans and black swans and between whooper swans from different years. (a) Alpha diversity (Chao1 and Shannon index) of ARGs between whooper swans and black swans. (b) Relative abundance difference of novel ARGs between whooper swans and black swans. (c) Alpha diversity (Chao1 and Shannon index) of ARGs between whooper swans from different years. (d) Relative abundance of novel ARGs genes in whooper swans from different years. Boxes of alpha diversity denote the interquartile range (IQR) between the first and third quartiles (25th and 75th percentiles, respectively), and the line inside denotes the median. Whiskers denote the lowest and highest values within 1.5 times and the IQR from the first and third quartiles, respectively. The whiskers in the histogram denote the standard error, and the P-value was analyzed using a homogeneity test of variance