Distribution of the number of bacteria cells attached to per diatom valve face type (frustule or capsule) in xenic A. minutissimum biofilms incubated for 11 to 31 days.

Bacteria were counted in SEM images, if they were in direct, visible contact with the valve face of either a frustule or a completely encapsulated diatom cell (see figures 2B and 3A for illustration). Boxes represent 1st and 3rd quartile; Black center lines represent medians; Whiskers extend to 1.5-fold of the inter-quartile range. Diamond symbols represent means. Black dots are outliers.

本研究对扫描电子显微镜（SEM）图像中的细菌进行计数，仅统计那些与硅藻硅质壳（frustule）的瓣面，或完全被包被的硅藻细胞的瓣面存在直接且可见接触的细菌，示例详见图2B与图3A。图中箱体代表第一四分位数与第三四分位数；黑色中线为中位数；须线延伸至四分位距的1.5倍范围；菱形符号代表均值；黑色圆点为异常值。