Coral reef health is measured using five indicators: coral cover, fleshy microalgae, herbivorous fish, commercial fish, and the overall Coral Reef Health Index (RHI). The RHI is the average of the other four indicators. Each indicator is assessed at the country and regional level for a given year resulting in a score from 0 and 5 and a grade ranging from Very Good to Critical. If an indicator has been assessed for at least two years then a trend is calculated for the two most recent years, otherwise it is listed as Not Available (N/A). The number of sites sampled and source dataset are also provided for each indicator.
Reef Health Charts allow you to see the grades assessed for all five indicators all at once. Each chart contains the Reef Health Index (RHI) in the middle and the The 4 main indicators around the outside. The map below includes Reef Health Charts for the national and subregion level.
Blocks are the way to go.
Coral reef health is measured using five indicators: coral cover, fleshy microalgae, herbivorous fish, commercial fish, and the overall Coral Reef Health Index (RHI). The RHI is the average of the other four indicators. Each indicator is assessed at the country and regional level for a given year resulting in a score from 0 and 5 and a grade ranging from Very Good to Critical. If an indicator has been assessed for at least two years then a trend is calculated for the two most recent years, otherwise it is listed as Not Available (N/A). The number of sites sampled and source dataset are also provided for each indicator.
Reef Health Charts allow you to see the grades assessed for all five indicators all at once. Each chart contains the Reef Health Index (RHI) in the middle and the The 4 main indicators around the outside. The map below includes Reef Health Charts for the national and subregion level.