The effect of experimental pollinator decline on pollinator-mediated selection on floral traits

Human-mediated environmental change, by reducing mean fitness, is hypothesized to strengthen selection on traits that mediate interactions among species. For example, human-mediated declines in pollinator populations are hypothesized to reduce mean seed production by increasing the magnitude of pollen limitation and thus strengthen pollinator-mediated selection on floral traits that increase pollinator attraction or pollen transfer efficiency. To test this hypothesis, we measured two female fitness components and six floral traits of Lobelia siphilitica plants exposed to supplemental hand-pollination, ambient open-pollination, or reduced open-pollination treatments. The reduced treatment simulated pollinator decline, while the supplemental treatment was used to estimate pollen limitation and pollinator-mediated selection. We found that plants in the reduced pollination treatment were significantly pollen-limited, resulting in pollinator-mediated selection for taller inflorescences and m..., , , # The effect of experimental pollinator decline on pollinator-mediated selection on floral traits

[https://doi.org/10.5061/dryad.h70rxwdqh](https://doi.org/10.5061/dryad.h70rxwdqh)

## Description of the data and file structure

This package contains 4 data files:

### “Raw Data for Ecology and Evolution Submission.xlsx”

This file contains the raw (i.e. not relativized or standardized) data used for all analyses in the manuscript. The columns are as follows: 

* Treatment: Hand = Supplemental hand pollination; Open = Ambient open pollination; Redu = Reduced open pollination
* Plant_ID: Unique number identifying each plant included in the data set
* Fruits_Per_Plant: Number of fruits produced by each plant
* Seeds_Per_Plant: Number of seeds produced by each plant
* Inflorescence_Height: Height of the inflorescence in cm
* Daily_Display: Mean number of open flowers on a plant per day
* Petal_Brightness: Index of the reflectance of the petals across all wavelengths
* Peta...