Rank abundance chart displaying the distribution of the 12 most abundant <i>nifH</i> MOTUs derived from the dead wood dataset within the compiled <i>nifH</i> dataset comprising 26,383 sequences.

<p>Only the 200 largest MOTUs are shown due to space limitations. Colored bars indicate dead wood tree species (green, <i>Fagus sylvatica</i>; red, <i>Picea abies</i>). The inserted table lists the best BLASTn hit reference sequences in NCBI Genbank for the same 12 most abundant wood-derived MOTUs from our study.