Figure 3.

Connectivity of microeukaryotes across different habitats and potential migrated fungal taxa. Fast expectation‐maximization microbial source tracking analysis for V4 (A) and V9 (B) regions at the zero‐radius operational taxonomic unit (zOTU) level. The direction of the arrows represents the source‐sink relationships, and percentages represent the contribution that each source provides. Total relative abundance of potential migrated fungal taxa with the assigned trophic mode in each pair of habitats from V4 (C) and V9 (D) regions. Wilcoxon test is performed in R to verify whether a zOTU's abundance significantly differs between each pair of habitats. We assume that species may have migrated between the two habitats if there is no significant difference in the abundance of the same fungal species in these two habitats. The x‐axis is each habitat pair. The trophic mode is identified using FUNGuild.