Fig. 1

Map of the study area showing the selected upazilas of Jamalpur district, Bangladesh, along with the number of samples collected from each upazila. The map was generated using ArcMap 10.8.

Map of the study area showing the selected upazilas of Jamalpur district, Bangladesh, along with the number of samples collected from each upazila. The map was generated using ArcMap 10.8.