Fig. 9: Global map of herbicide risk scores in agricultural areas and 22 herbicide residues in 3 categories in adjacent sea areas.
From: Herbicide leakage into seawater impacts primary productivity and zooplankton globally
The map has a spatial resolution of 5 arcmin, which is approximately 10 km × 10 km at the equator. The box-scatter plots show the residual concentration of herbicides. Each point in the scatter plots corresponds to a survey site, which are arranged from left to right in chronological order. Box plot whiskers of the box chart on the left represent the minimum and maximum values, with bounds of the box representing the first quartile, median (marked by yellow line), and third quartile of 22 triazine herbicides at all sites in the corresponding sea area (n = 16, 128, 34, 271, 21, 168, and 22 independent survey sites, from left to right). The solid circle in each sea area represents the median value of the total concentration of 22 the triazine herbicides at each station in that area, with a larger circle size representing a larger median value. Herbicides data in each grid cell was based on the usage of 52 herbicides that are currently being widely used worldwide from the PEST-CHEMGRIDSv1 global database. Source data are provided as a Source Data file.
