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
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Modeling patterns of coral bleaching at a remote Central Pacific atoll
Williams, G. J., Knapp, I. S., Maragos, J. E. & Davy, S. K., Medi 2010, Yn: Marine Pollution Bulletin. 60, 9, t. 1467-1476Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Modelling the linkage between coral assemblage structure and pattern of environmental forcing
Sandin, S. A., Eynaud, Y., Williams, G. J., Edwards, C. & McNamara, D., 14 Hyd 2020, Yn: Royal Society Open Science. 7, 10, 200565.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Natural bounds on herbivorous coral reef fishes
Heenan, A., Hoey, A. S., Williams, G. & Williams, I. D., 23 Tach 2016, Yn: Proceedings of the Royal Society B.. 283, 1843Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Natural history of coral-algae competition across a gradient of human activity in the Line Islands
Barott, K. L., Williams, G. J., Vermeij, M. J. A., Harris, J., Smith, J. E., Rohwer, F. L. & Sandin, S. A., 2012, Yn: Marine Ecology Progress Series. 460, t. 1-12Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Natural variation in coral reef trophic structure across environmental gradients
Heenan, A., Williams, G. & Williams, I., Maw 2020, Yn: Frontiers in Ecology and the Environment. 18, 2, t. 69-75Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Near-island biological hotspots in barren ocean basins
Gove, J. M., McManus, M. A., Neuheimer, A. B., Polovina, J. J., Drazen, J. C., Smith, C. R., Merrifield, M. A., Friedlander, A. M., Ehses, J. S., Young, C. W., Dillon, A. K. & Williams, G., 16 Chwef 2016, Yn: Nature Communications. 7, 10581.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Near-island enhancement in mesopelagic micronekton communities off Hawaiʻi
Drazen, J., Clark, B., Gove, J. M., Phipps, J., Copeland, A., Lecky, J., Green, M., Kobayashi, D., Turner, J., Whitney, J. & Williams, G. J., Medi 2023, Yn: Deep Sea Research Part I: Oceanographic Research Papers. 199, 104107.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Nitrogen enrichment in macroalgae following mass coral mortality
Vaughan, E., Wilson, S., Howlett, S., Parravicini, V., Williams, G. J. & Graham, N. A. J., 12 Ebr 2021, Yn: Coral Reefs.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Ocean currents magnify upwelling and deliver nutritional subsidies to reef-building corals during El Niño heatwaves
Fox, M., Guillaume-Castel, R., Edwards, C., Glanz, J., Gove, J. M., Green, M., Juhlin, E., Smith, J. & Williams, G. J., 14 Meh 2023, Yn: Science Advances. 9, 24, eadd5032.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Ocean warming and acidification have complex interactive effects on the dynamics of a marine fungal disease
Williams, G. J., Price, N. N., Ushijima, B., Aeby, G. S., Callahan, S., Davy, S. K., Gove, J. M., Johnson, M. D., Knapp, I. S., Shore-Maggio, A., Smith, J. E., Videau, P. & Work, T. M., 7 Maw 2014, Yn: Proceedings of the Royal Society B: Biological Sciences. 281, 1778Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Outbreak of Acropora white syndrome following a mild bleaching event at Palmyra Atoll, Northern Line Islands, Central Pacific
Williams, G., Knapp, I. S., Work, T. M. & Conklin, E. J., Medi 2011, Yn: Coral Reefs. 30, 3, t. 621-621Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Parsing human and biophysical drivers of coral reef regimes
Jouffray, J.-B., Wedding, L., Norstrom, A. V., Donovan, M., Williams, G., Crowder, L., Erickson, A., Friedlander, A. M., Graham, N. A. J., Gove, J. M., Kappel, C., Kittinger, J., Lecky, J., Oleson, K., Selkoe, K., White, C., Williams, I. & Nystrom, M., Chwef 2019, Yn: Proceedings of the Royal Society B: Biological Sciences. 286, 1896, 20182544.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Pathogenesis of a tissue loss disease affecting multiple species of corals along the Florida Reef Tract
Aeby, G. S., Ushijima, B., Campbell, J., Jones, S., Williams, G. J., Meyer, J., Hase, C. & Paul, V., 1 Tach 2019, Yn: Frontiers in Marine Science. 6, 678.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Patterns of Coral Disease across the Hawaiian Archipelago: Relating Disease to Environment
Aeby, G. S., Williams, G. J., Franklin, E. C., Kenyon, J., Cox, E. F., Coles, S. & Work, T. M., 31 Mai 2011, Yn: PLoS ONE. 6, 5Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Positive and Negative Effects of a Threatened Parrotfish on Reef Ecosystems
McCauley, D. J., Young, H. S., Guevara, R., Williams, G. J., Power, E. A., Dunbar, R. B., Bird, D. W., Durham, W. H. & Micheli, F., 26 Gorff 2014, Yn: Conservation Biology. 28, 5, t. 1312-1321Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Possible control of acute outbreaks of a marine fungal pathogen by nominally herbivorous tropical reef fish
Neal, B., Honisch, B., Warrender, T., Williams, G. J., Work, T. & Price, N., 12 Gorff 2020, Yn: Oecologia. 193, 3, t. 603-617Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Precision and cost-effectiveness of bioindicators to estimate nutrient regimes on coral reefs
Vaughan, E. J., Wynn, P. M., Wilson, S. K., Williams, G. J., Barker, P. A. & Graham, N. A. J., Medi 2021, Yn: Marine Pollution Bulletin. 170, 112606.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Predictive Modeling of Coral Disease Distribution within a Reef System
Williams, G. J., Aeby, G. S., Cowie, R. O. M. & Davy, S. K., 17 Chwef 2010, Yn: PLoS ONE. 5, 2, e9264.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Prey-size plastics are invading larval fish nurseries
Gove, J. M., Whitney, J., McManus, M. A., Lecky, J., Carvalho, F., Lynch, J., Li, J., Neubauer, P., Smith, K., Phipps, J., Kobayashi, D., Balagso, K., Contreras, E., Manuel, M., Merrifield, M., Polovina, J., Asner, G., Maynard, J. A. & Williams, G. J., 26 Tach 2019, Yn: Proceedings of the National Academy of Sciences of the USA. 116, 48, t. 24143-24149 7 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Projections of climate conditions that increase coral disease susceptibility and pathogen abundance and virulence
Maynard, J., van Hooidonk, R., Eakin, C. M., Puotinen, M., Garren, M., Williams, G. J., Heron, S. F., Lamb, J., Weil, E., Willis, B. & Hervell, C. D., 4 Mai 2015, Yn: Nature Climate Change. 5, t. 688-694Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Proximate environmental drivers of coral communities at Palmyra Atoll: Establishing baselines prior to removing a WWII military causeway
Williams, G. J., Knapp, I. S., Maragos, J. E. & Davy, S. K., Awst 2011, Yn: Marine Pollution Bulletin. 62, 8, t. 1842-1851Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Quantifying Climatological Ranges and Anomalies for Pacific Coral Reef Ecosystems
Gove, J. M., Williams, G. J., McManus, M. A., Heron, S. F., Sandin, S. A., Vetter, O. J. & Foley, D. G., 18 Ebr 2013, Yn: PLoS ONE. 8, 4, e61974.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Wedi ei Dderbyn / Yn y wasg
Quantifying spatial gradients in coral reef benthic communities using multivariate dispersion
Lawrence, A., Heenan, A. & Williams, G. J., 23 Ion 2025, (Wedi ei Dderbyn / Yn y wasg) Yn: Royal Society Open Science.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Quantifying upwelling in tropical shallow waters: a novel method using a temperature stratification index
Guillaume-Castel, R., Williams, G. J., Rogers, J. S., Gove, J. M. & Green, M., Awst 2021, Yn: Limnology and Oceanography: Methods. 19, 8, t. 566-577 10499.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Quantitative characterisation of reef fish diversity among nearshore habitats in a northeastern New Zealand marine reserve.
Williams, G. J., Cameron, M. J., Turner, J. R. & Ford, R. B., 1 Maw 2008, Yn: New Zealand Journal of Marine and Freshwater Research. 42, 1, t. 33-46Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid