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Large geographic variability in the resistance of corals to thermal stress

AuthorsMcClanahan, Tim R.; Maina, Joseph; Darling, Emily S.; Guillaume, Mireille M. M.; Muthiga, Nyawira; D'agata, Stephanie; Leblond, Julien; Arthur, Rohan ; Jupiter, Stacy D.; Wilson, Shaun K.; Mangubhai, Sangeeta; Ussi, Ali M.; Humphries, Austin T.; Patankar, Vardhan; Shedrawi, George; Julius, Pagu; Ndagala, Jamuary; Grimsditch, Gabriel
KeywordsOceanographic change
Climate change
Coral bleaching
Diversity hotspots
Issue Date2020
PublisherJohn Wiley & Sons
CitationGlobal Ecology and Biogeography : doi:10.1111/geb.13191 (2020)
AbstractResults: Geographic faunal provinces and ecoregions were the strongest predictors of coral resistance to thermal stress, with sites in the Australian, Indonesian and Fiji-Caroline Islands coral provinces having higher resistance to thermal stress than Africa-India and Japan-Vietnam provinces. Ecoregions also showed strong gradients in resistance with highest resistance to thermal stress in the western Pacific and Coral Triangle and lower resistance in the surrounding ecoregions. A more detailed evaluation of Coral Triangle and non-Coral Triangle sites found higher resistance to thermal stress within the Coral Triangle, associated with c. 2.5 times more recent historical thermal anomalies and more centralized, warmer, and cool-water skew SST distributions, than in non-Coral Triangle sites. Our findings identify the importance of environmental history and geographic context in future predictions of bleaching, and identify some potential drivers of coral resistance to thermal stress. Main conclusions: Simple threshold models of heat stress and coral acclimation are commonly used to predict the future of coral reefs. Here and elsewhere we show that large-scale responses of coral communities to heat stress are geographically variable and associated with differential environmental stresses and histories.
DescriptionEste artículo contiene 19 páginas, 5 figuras, 2 tablas.
Publisher version (URL)https://doi.org/10.1111/geb.13191
Appears in Collections:(CEAB) Artículos
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