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Fig. 2 | BMC Microbiology

Fig. 2

From: Core and conditionally rare taxa as indicators of agricultural drainage ditch and stream health and function

Fig. 2

Dynamics of core and conditional rare taxa (CRT). (A) Area plots depict the percentage of overall Bray-Curtis dissimilarity (%) of aquatic microbiomes attributed to core and CRT dynamics over time in 2016–2018 at agricultural drainage ditch sites (top), mixed-use sites (middle), and all study sites (bottom). The red area represents the dynamics of core taxa contribution; the green area represents the dynamics of CRT contribution. The sampling started on May 24 in 2016, May 1 in 2017, and April 18 in 2018. Due to the drought conditions in 2016, only five samples were collected from agricultural drainage ditch sites. (B) The importance of environmental factors influencing the core (left) and CRT (right) contributions to overall beta-diversity at agricultural drainage ditch sites (top) and mixed-use sites (bottom) was ranked using random forest algorithm. The environmental factors shown in the y axis across four plots were ordered according to their importance ranking for Stream_core at agricultural drainage ditch sites. (C) Community stability in combined core and CRT (upper), core (middle), and CRT (lower) under four different land use classes. Agri_ditches, Agricultural drainage ditches; Agri_253, site S253 is situated on a larger agricultural stream (Strahler stream order 4). The detailed descriptions of the water physicochemical properties can be found in Table 2

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