11. Of California's total plant population , 2, 153 species, subspecies, and varieties are taxonomies. 12. He carried out experimental work on plant populations , plantations and fertilisation of trees. 13. Geologically and topographically, plant populations in xeric climates are broken down into smaller groups. 14. This concept does not refer to animal or plant populations . 15. Parametric named-peril insurance linked to plant population , available for potato growers under contract farming. 16. The Maurice River watershed includes a variety of habitat supporting rare wildlife and plant populations . 17. In its Florida range it is less than 1 percent of the woody plant population . 18. It collects seeds from wild plant populations worldwide, with an emphasis on palms and cycads. 19. Dredging has eliminated entire groups of deep-water plant populations . 20. Without predation, herbivores began to over-graze many woody browse species, affecting the area's plant populations .
