Heat map of relative abundance of microbial taxa with hierarchical clustering of samples. Taxon abundance is shown on a log₁₀ scale for the 127 taxa differentially present between inner and outer bay sites. Darker blue indicates greater relative abundance of specific taxa. Each color in the cluster dendrogram represents a statistically significant cluster of samples with similar microbial community structure. Colors below the cluster dendrogram indicate location and eelgrass presence for each sample collected. DOI: https://doi.org/10.1525/elementa.350.f2