Fig. 1: Reefs surveyed in the Puerto Morelos reef system and density loss in live and dead coral colonies.
a Polygons of the reefs and data used to calculate the area of each reef (delimited by contours) obtained from SIMAR ArrecifeSAM-CONABIO66,67 (https://simar.conabio.gob.mx). Warmer colors indicate higher percentages of CaCO3 loss after the mass mortality event caused by stony coral tissue loss disease (SCTLD; for more information, see Fig. 3). Stars indicate the sites where coral cores and fragments were collected. The sites Radio Pirata and La Catedral are part of the PM La Catedral reef unit. b–e Comparison of X-ray images and mean annual density values of all slabs obtained from living vs. dead coral colonies of each species analyzed in this study. This change was used to obtain a global indicator of CaCO3 loss for each species. The X-ray images show that living colonies have higher density areas than those of dead colonies. The pie charts show the density loss (%) for living and dead colonies.
