Table 1.
Bleaching database legend.
Table 2.
Bleaching severity categories.
Table 3.
Summary of observational bleaching data.
Fig 1.
Annual number of bleaching observations for 1985–2010.
Blue bars represent original ReefBase reports; orange bars represent new reports. Shading reflects bleaching level, from mild (1–10%) or unknown extent of bleaching (levels 1 and -1 in Table 2, lightest colour) to severe (>50%) bleaching (level 3, darkest colour).
Fig 2.
Annual area of moderate and severe (level 2 and 3) bleaching observations for 1985–2010.
The area is computed from 0.04° × 0.04° latitude-longitude grid cells containing original ReefBase reports (navy blue), new records (orange), and those in both datasets (grey).
Fig 3.
Total area (km2) of moderate and severe (level 2 and 3) bleaching by region over the 1985–2010 period.
The area is computed based on 0.04° × 0.04° latitude-longitude grid cells representing original ReefBase reports (blue) and new reports (orange).
Table 4.
Years for which indicator kriging was conducted.
Fig 4.
Examples of bleaching observations and probabilities for the Caribbean in 2005 (a,c,e) and central-west equatorial Pacific in 2004 (b,d,f).
Top panels (a,b) show the raw observations of moderate and severe bleaching (level 2 and 3) from the database; middle panels (c,d) show the interpolated bleaching probabilities; and bottom panels (e,f) show the semi-variograms for the region and year.
Fig 5.
Number of 0.04° × 0.04° latitude-longitude grid cells with different estimated probabilities of bleaching from 1985–2010.
Note that the density of bleaching reports was too low in years 1985, 1986, and 1989–94 for the interpolation to succeed.
Table 5.
Thermal stress for reefs with different bleaching probabilities.
Fig 6.
Mean, quartile range, and 5th and 95th percentile of reef area-weighted annual maximum DHW of a) all reef cells and b) reef cells with at least 50% probability of bleaching (more likely than not) from 1985–2010.
Note that the density of bleaching reports was too low in years 1985, 1986, and 1989–94 for the interpolation to succeed.