CSIRO PUBLISHING Marine and Freshwater Research, 2021, 72, 620–632 https://doi.org/10.1071/MF19378 Recurrent coral bleaching in north-western Australia and associated declines in coral cover R. C. Babcock A,E,I,J, D. P. ThomsonB, M. D. E. HaywoodA, M. A. VanderkliftB, R. PillansA, W. A. RochesterA, M. MillerA, C. W. SpeedC, G. ShedrawiD,I, S. FieldD, R. EvansD,E, J. StoddartF, T. J. HurleyG, A. ThompsonH, J. GilmourC,E and M. DepczynskiC,E ACSIRO Oceans and Atmosphere, Queensland Biosciences Precinct, 306 Carmody Road, Saint Lucia, Qld 4072, Australia. BCSIRO Oceans and Atmosphere, Indian Ocean Marine Research Centre, 64 Fairway, The University of Western Australia, Crawley, WA 6009, Australia. CAustralian Institute of Marine Science, Indian Ocean Marine Research Centre, 64 Fairway, The University of Western Australia, Crawley, WA 6009, Australia. DDepartment of Biodiversity, Conservation, and Attractions, 17 Dick Perry Ave, Kensington, WA 6151, Australia. EOceans Institute and School of Biological Sciences, 64 Fairway, The University of Western Australia, Crawley, WA 6009, Australia. FMScience, Mount Lawley, WA 6929, Australia. GO2 Marine, 11 Mews Road, Fremantle, WA 6160, Australia. HAustralian Institute of Marine Science, PMB No. 3, Townsville, Qld 4810, Australia. IPacific Community, Promenade Roger Laroque, Noumea 98800, New Caledonia. JCorresponding author. Email:
[email protected] Abstract. Coral reefs have been heavily affected by elevated sea-surface temperature (SST) and coral bleaching since the late 1980s; however, until recently coastal reefs of north-western Australia have been relatively unaffected compared to Timor Sea and eastern Australian reefs. We compare SST time series with changes in coral cover spanning a period of up to 36 years to describe temporal and spatial variability in bleaching and associated coral mortality throughout the Pilbara– Ningaloo region.