Lynnette Roth

lroth
Ocean Research and Education Foundation

Resources

The seagrass map displays data from multiple sources, providing the most accurate and current information for this region to date. See Supplemental information for more details regarding specific sources used. Seagrass is summarized to give area calculations by country. For detailed polygon and habitat information, see the Seagrass Extent layer.

The reef subregions were created by expert opinion (Phil Kramer, Patricia Kramer, and John Knowles) using information on the orientation of reefs around each island, the benthic habitat, and ocean depth. The 200m contour was extracted from the 2014 GEBCO bathymetric data. From there contiguous shelf sections around each island was divided into subregions based on the above criteria/reef location. For the CMBP countries, the subregions were taken from the NOAA shelf unit layer.

This data represents the site locations for several reef projects including: AGRRA (Atlantic and Gulf Rapid Reef Assessment), Barbuda Blue Halo Initiative, FORCE (Future of Reefs in a Changing Environment), Reef Check, and data from Robert Steneck and Steve Nimrod among others. Data was compared and collated to determine the indicator values of the reef health index for each of the sites, reef subregions, countries, and region. For the CMBP project, only AGRRA data was used.

The coral reef map displays data from multiple sources, providing the most accurate and current information for this region to date. See Supplemental information for more details regarding specific sources used. Coral data is summarized to give area calculations by country. For detailed polygon and habitat information, see the Coral Reef Extent layer.

This file shows the 6 country level charts and data (large charts) as well as the multiple subregional charts and data found within each country. Coral reef health is measured using four indicators: coral cover, fleshy macroalgae, herbivorous fish and commercial fish. The Coral Reef Health Index (RHI) is the average of the 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.