Fig. 4

Continental atlases and co-occurrence patterns of dominant soil archaea with shared environmental preferences in agricultural fields across eastern China. Environmental preferences of dominant archaeal taxa were identified by Spearman correlations between the relative abundance of the taxa assigned to the two ecological clusters and their major environmental predictors, (1) high and (2) low pH for dryland cluster; (3) high and (4) low mean annual temperature (MAT) for paddy cluster (a). The atlas maps predicted the distributions of dominant archaeal taxa for each identified environmental preference across maize and rice fields, respectively. The cross-validation (“CV”) of the maps based on Pearson correlation between the predicted and observed values in each sampling site. Taxonomic compositions of dominant archaeal taxa at the genus level for the four sub-ecological clusters are displayed at the left-bottom of each graph. Network diagram with nodes (dominant archaeal taxa) colored by each sub-ecological cluster (b). The size of each node is proportional to the relative abundance of the taxa; the thickness of each connection between two nodes (edge) is proportional to the value of Spearman correlation coefficient