Floral organs act as environmental filters and interact with pollinators to structure the yellow monkeyflower (Mimulus guttatus) floral microbiome

Assembly of microbial communities is the result of neutral and selective processes. However, the relative importance of these processes is still debated. Microbial communities of flowers, in particular, have gained recent attention because of their potential impact to plant fitness and plant-pollinator interactions. However, the role of selection and dispersal in the assembly of these communities remains poorly understood. We evaluated the role of pollinator-mediated dispersal on the contribution of neutral and selective processes in the assembly of floral microbiomes of the yellow monkeyflower (Mimulus guttatus). We sampled flowers in the presence and absence of pollinators within five different serpentine seeps in CA and obtained 16s amplicon data on the epiphytic bacterial communities. Consistent with strong micro-environment selection within flowers we observed significant differences in community composition across floral organs and only a small effect of geographic distance. Polli..., , , # Data from: Floral organs act as environmental filters and interact with pollinators to structure the yellow monkeyflower (Mimulus guttatus) floral microbiome

[https://doi.org/10.5061/dryad.m874vg5](https://doi.org/10.5061/dryad.m874vg5)

## Description of the data and file structure

### Files and variables

#### Environmental covariates

Pollinator data, co-flowering community

* **PollinatorData.csv** : Pollination observations data. Collected by Maria Rebolleda-Gomez and Rebecca Hayes.
* Location: The number of location within seep (see figure 1 of paper, and supplementary table for coordinates).
* Seep: One of the five replicate seeps in the study (BNS, RH1, RHA, RHB, TP9; see figure 1 of paper and supplementary table for coordinates).
* Visits: Number of visits in 15 min.
* Functional group: Functional pollinator categories from Koski et al., 2015: XS- extra-large social bees; LS- Large social bees; SB- small solitary bee; MB- medium solitary bee; LB- large solitary bee ...