Professor Gareth Williams
Professor / Director of Impact and Engagement

Contact info
Room: 303 Craig Mair Phone: +44(0)1248 382588
E-mail: g.j.williams@bangor.ac.uk Twitter
I graduated in Marine Biology (University of Liverpool) in 2004 and completed an MSc in Marine Environmental Protection (Bangor University) in 2006. I began a PhD in Marine Biology (Victoria University of Wellington, New Zealand) in 2007 in coral disease ecology, combining macroecology, experimental ecology, and histopathology to identify disease baselines and drivers of disease prevalence on Pacific coral reefs. A focus study site of mine was Palmyra Atoll, an uninhabited atoll in the Northern Line Islands. After obtaining my PhD in 2011, I was awarded a post-doctoral scholarship at Scripps Institution of Oceanography, University of California San Diego (UCSD) where I continued to work on the macroecology of Pacific coral reefs. This role at Scripps transitioned into an Assistant Project Scientist position within the Center for Marine Biodiversity and Conservation in 2013. I left Scripps in late 2015 to return to the UK and take up my full-time role within the School of Ocean Sciences at Bangor University.
I am a marine ecologist specialising in coral reef ecology. My work focuses on the interaction of organisms with their environment, often taking a macroecological approach. I am particularly interested in how human activities and natural biophysical gradients interact to drive community patterns across multiple trophic levels (microbes to sharks) and scales (individual reefs to entire ocean basins). Much of my work incorporates remote coral reefs free from direct human impact, providing key replication at the unimpacted end of an intact-to-degraded ecosystem spectrum. By surveying across extensive geographical areas we address broad questions pertaining to: 1. the human, climatic and oceanographic drivers of coral reef ecosystem structure and function, 2. climate change impacts to coral reef ecosystems, 3. the spatial ecology of coral reefs, and 4. disease dynamics on coral reefs.
Research Areas
- Erthygl › Ymchwil › Adolygwyd gan gymheiriaid
- Cyhoeddwyd
A review of a decade of lessons from one of the world’s largest MPAs: conservation gains and key challenges
Hays, G. C., Koldewey, H., Meeuwig, J. J., Attrill, M. J., Barley, S., Bayley, D., . Benkwitt, C. E., Block, B., Schallert, R. J., Carlisle, A. B., Carr, P., Chapple, T. K., Collins, C., Diaz, C., Dunn, N., Dunbar, R. B., Eager, D. S., Engel, J., Embling, C. B., Esteban, N., Ferretti, F., Foster, N. L., Freeman, R., Gollock, M., Graham, N. A. J., Harris, J. L., Head, C. E. I., Hosegood, P., Howell, K. L., Hussey, N. E., Jacoby, D. M. P., Jones, R., Lange, I. D., Letessier, T. B., Levey, E., Lindhart, M., McDevitt-Irwin, J. M., Meekan, M. G., Micheli, F., Mogg, A., Mortimer, J. A., Mucciarone, D., Nicoll, M. A., Nuno, A., Perry, C. T., Sannassy Pilly, J., Preston, S. G., Rattray, A. J., Robinson, E., Roche, R., Schiele, M., Sheehan, E. V., Sheppard, A., Sheppard, C., Smith, A. L., Soule, B., Spalding, M., Stevens, G. M. W., Steyaert, M., Stiffel, S., Taylor, B., Tickler, D. M., Trevail, A. M., Trueba, P., Turner, J., Votier, S., Wilson, B., Williams, G., Williamson, B. J., Williamson, M. J., Wood, H. & Curnick, D. J., 14 Hyd 2020, Yn: Marine Biology. 167, 11, 159.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
A robust operational model for predicting where tropical cyclone waves damage coral reefs
Puotinen, M., Maynard, J. A., Beeden, R., Radford, B. & Williams, G., Mai 2017, Yn: Scientific Reports. 6, 26009.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Advancing the integration of spatial data to map human and natural drivers on coral reefs
Wedding, L., Lecky, J., Gove, J., Walecka, H., Donovan, M., Williams, G., Jouffray, J.-B., Crowder, L., Erickson, A., Falinski, K., Friedlander, A., Kappel, C., Kittinger, J., McCoy, K., Norstrom, A., Nystrom, M., Oleson, K., Stamoulis, K., White, C. & Selkoe, K., 1 Maw 2018, Yn: PLoS ONE. :e0189792.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Antarctic sea-ice microbial communities show distinct patterns of zonation in response to algal-derived substrates
Cowie, R. O., Williams, G. J., Maas, E. W., Voyles, K. M. & Ryan, K. G., 2 Hyd 2014, Yn: Aquatic Microbial Ecology. 73, 2, t. 123-134Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Artificial shorelines lack natural structural complexity across scales
Lawrence, P., D'Urban Jackson, T., Jenkins, S., Williams, G. J. & Davies, A., 26 Mai 2021, Yn: Proceedings of the Royal Society B: Biological Sciences. 288, 1951, t. 20210329 rspb.2021.0329.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Assessing relative resilience potential of coral reefs to inform management
Maynard, J. A., McKagan, S., Raymundo, L., Johnson, S., Ahmadia, G. N., Johnston, L., Houk, P., Williams, G., Kendall, M., Heron, S. F., van Hooidonk, R., Mcleod, E., Tracey, D. & Planes, S., 1 Rhag 2015, Yn: Biological Conservation. 192, December, t. 109-119Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Benthic communities at two remote Pacific coral reefs: effects of reef habitat, depth, and wave energy gradients on spatial patterns
Williams, G. J., Smith, J. E., Conklin, E. J., Gove, J. M., Sala, E. & Sandin, S. A., 28 Mai 2013, Yn: PeerJ. 1, e81.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Biophysical drivers of coral trophic depth zonation
Williams, G., Sandin, S. A., Zgliczynski , B. J., Fox, M., Gove, J. M., Rogers, J. S., Furby, K., Hartmann, A., Caldwell, Z. R., Price, N. & Smith, J. E., Ebr 2018, Yn: Marine Biology. 165, 60.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Black reefs: iron-induced phase shifts on coral reefs
Kelly, L. W., Barott, K. L., Dinsdale, E., Friedlander, A. M., Nosrat, B., Obura, D., Sala, E., Sandin, S. A., Smith, J. E., Vermeij, M. J. A., Williams, G. J., Willner, D. & Rohwer, F., Maw 2012, Yn: The ISME Journal. 6, 3, t. 638-649Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Co-occurrence of herbivorous fish functional groups correlates with enhanced coral reef benthic state
Sheppard, C., Williams, G. J., Exton, D. & Keith, S., Maw 2023, Yn: Global Ecology and Biogeography. 32, 3, t. 435-449 15 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Combining fish and benthic communities into multiple regimes reveals complex reef dynamics
Donovan, M. K., Friedlander, A. M., Lecky, J., Jouffray, J.-B., Williams, G. J., Wedding, L. M., Crowder, L. B., Erickson, A. L., Graham, N. A. J., Gove, J. M., Kappel, C. V., Karr, K., Kittinger, J. N., Norström, A. V., Nyström, M., Oleson, K. L. L., Stamoulis, K. A., White, C., Williams, I. D. & Selkoe, K. A., 16 Tach 2018, Yn: Scientific Reports. 8, 16943.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Contrasting recovery following removal of growth anomalies in the corals Acropora and Montipora
Williams, G. J., 11 Hyd 2013, Yn: Diseases of Aquatic Organisms. 106, 2, t. 181-185Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Coral disease at Palmyra Atoll, a remote reef system in the Central Pacific
Williams, G., Aeby, G. S. & Davy, S. K., Maw 2008, Yn: Coral Reefs. 27, 1, t. 207-207Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Coral reef benthic regimes exhibit non-linear threshold responses to natural physical drivers
Gove, J. M., Williams, G. J., McManus, M. A., Clark, S. J., Ehses, J. S. & Wedding, L. M., 2 Maw 2015, Yn: Marine Ecology Progress Series. 522, t. 33-48Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Coral reef ecology in the Anthropocene
Williams, G. J., Graham, N. A. J., Jouffray, J.-B., Norstrom, A. V., Nystrom, M., Gove, J. M., Heenan, A. & Wedding, L. M., Meh 2019, Yn: Functional Ecology. 33, 6, t. 1014-1022Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Coral reef ecosystem services in the Anthropocene
Woodhead, A. J., Hicks, C. C., Norstrom, A. V., Williams, G. J. & Graham, N. A. J., Meh 2019, Yn: Functional Ecology. 33, 6, t. 1023-1034Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Coral reef resilience differs among islands within the Gulf of Mannar, southeast India following successive coral bleaching events
Diraviya Raj, K., Aeby, G., Mathews, G., Williams, G. J., Caldwell, J., Laju, R. L., Selva Bharath, M., Dinesh Kumar, P., Arasamuthu, A., Gladwin Gnana Asir, N., Wedding, L., Davies, A., Moritsch, M. & Patterson Edward, J. K., Awst 2021, Yn: Coral Reefs. 40, 4, t. 1029-1044Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Coral reefs benefit from reduced land–sea impacts under ocean warming
Gove, J. M., Williams, G. J., Lecky, J., Brown, E., Conklin, E., Counsell, C., Davis, G., Donovan, M., Falinski, K., Kramer, L., Kozar, K., Li, N., Maynard, J. A., McCutcheon, A., McKenna, S., Neilson, B., Safaie, A., Teague, C., Whittier, R. & Asner, G., 21 Medi 2023, Yn: Nature. 621, 7979, t. 536-542 7 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Cryptic species obscure introduction pathway of the blue Caribbean sponge (Haliclona (Soestella) caerulea), (order: Haplosclerida) to Palmyra Atoll, Central Pacific
Knapp, I. S., Forsman, Z. H., Williams, G. J., Toonen, R. J. & Bell, J. J., 6 Awst 2015, Yn: PeerJ. 3Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Disease dynamics of Montipora white syndrome within Kaneohe Bay, Oahu, Hawaii: distribution, seasonality, virulence, and transmissibility
Aeby, G. S., Ross, M., Williams, G., Lewis, T. D. & Work, T. M., 26 Gorff 2010, Yn: Diseases of Aquatic Organisms. 91, 1, t. 1-8Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Disease dynamics of Porites bleaching with tissue loss: prevalence, virulence, transmission, and environmental drivers
Sudek, M., Williams, G. J., Runyon, C., Aeby, G. S. & Davy, S. K., 10 Chwef 2015, Yn: Diseases of Aquatic Organisms. 113, 1, t. 59-68Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Emergent patterns of reef fish diversity correlate with coral assemblage shifts along the Great Barrier Reef
González-Barrios, J., Keith, S., Emslie, M., Ceccarelli, D., Williams, G. J. & Graham, N., 13 Ion 2025, Yn: Nature Communications. 16, 303.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Environmental Factors Affecting Large-Bodied Coral Reef Fish Assemblages in the Mariana Archipelago
Richards, B. L., Williams, I. D., Vetter, O. J. & Williams, G. J., 27 Chwef 2012, Yn: PLoS ONE. 7, 2, e31374.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Environmental and ecological controls of coral community metabolism on Palmyra Atoll
Koweek, D., Dunbar , R. B., Rogers, J. S., Williams, G., Price, N., Mucciarone, D. & Teneva , L., Maw 2015, Yn: Coral Reefs. 34, 1, t. 339-351Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
First record of coralline fungal disease (CFD) in the Indian Ocean
Williams, G., Roche, R. & Turner, J., 4 Meh 2018, Yn: Coral Reefs. https://doi.org/10.1007/s00338-018-1704-z , 1 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid