Species richness

Indicator:

This is an indicator of the number of alien species at a particular site. Higher numbers of invasive species indicate the number of issues to be addressed, while higher numbers of all alien species indicate a higher risk of invasion, as a proportion of these species can be expected to become invasive over time. The indicator can be used at a range of scales to track invasion debt.

Source data:

Southern African Plant Invaders Atlas (SAPIA)