Algal ecophysiology in a changing world
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Pancake ice, East Antarctica (2007)
'Tronning' bleached corals (2015).
Wistari reef, Australia
Aboard the RV Investigator (2015)
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(Supervised students are underlined)

O'Brien J, McParland EL, Bramucci AR, Siboni N, Ostrowski M, Kahlke T, Levine NM, Brown MV, van de Kamp J, Bodrossy L, Messer LF, Petrou K, Seymour JR (2022). Biogeographical and seasonal dynamics of the marine Roseobacter community and ecological links to DMSP-producing phytoplankton. ISME Communications; 2: 16 [Open Access]
Duncan RJ., Petrou, K. (2022). Biomolecular Composition of Sea Ice Microalgae and Its Influence on Marine Biogeochemical Cycling and Carbon Transfer through Polar Marine Food Webs. Geosciences;12:38. [Open Access]
Duncan RJ., Nielsen DA., Sheehan CE., Deppeler S., Hancock A., Schulz KG., Davidson A., Petrou, K. (2022). Ocean acidification alters the nutritional value of Antarctic diatomsa. New Phytologist; doi/epdf/10.1111/nph.17868.
Petrou, K., Nunn BL., Padula M., Nielsen DA. (2021). Broad scale proteomic analysis of heat-destabilised symbiosis in the hard coral Acropora millepora. Scientific Reports;11:19061. [Open Access]
Fernandez E., Ostrowski M., Siboni N., Seymour JR.,Petrou, K. (2021). Uptake of Dimethylsulfoniopropionate (DMSP) by Natural Microbial Communities of the Great Barrier Reef (GBR), Australia. Microorganisms; 9:1891. [Open Access]
Roberts, L., Kutey, C., Melbourne-Thomas, J.,Petrou, K., Benson, T., Fiore, D., Fletcher, P., Johnson, E., Silk, M., Taberna, S., Vargas Filgueiera, V., Constable, A.J. (2021). Enabling evidence-based policy for the Southern Ocean through cultural arts practices. Frontiers in Ecology and Evolution; doi:10.3389/fevo-2021-616089. [Open Access]
Ajani P.A., Petrou K., Larsson, M., Nielsen, D.A., Burke, J., Murray, S.A. (2021). Phenotypic trait variability as an indication of adaptive capacity in a cosmopolitan marine diatom. Environmental Microbiology; 23:207-223. [Open Access]
Sheehan C.E., Baker K.G., Nielsen D.A., Petrou K. (2020). Temperatures above thermal optimum reduce cell growth and silica production while increasing cell volume and protein content in the diatom Thalassiosira pseudonana. Hydrobiologia; 847:4233-4248.
Theseira A.M., Nielsen D.A., Petrou K. (2020). Uptake of dimethylsulphoniopropionate (DMSP) reduces free reactive oxygen species (ROS) during late exponential growth in the diatom Thalassiosira weissflogii grown under three salinities. Marine Biology; 167:127.
Messer L., Ostrowski M., Doblin M., Petrou K., Baird M., Ingleton T., Bissett A., Van de Kamp J., Nelson T., Paulsen I., Bodrossy L., Fuhrman J., Seymour J., Brown M.V. (2020). Microbial tropicalisation driven by a strengthening western ocean boundary current. Global Change Biology; (26)10:5613-5629.
Sheehan C.E., Nielsen D.A., Petrou K. (2020). Macromolecular composition, productivity and dimethylsulfoniopropionate in Antarctic pelagic and sympagic microalgal communities. Marine Ecology Progress Series ; 640: 45-61.
Sheehan C.E., Petrou K. (2020). Dimethylated sulfur production in batch cultures of Southern Ocean phytoplankton. Biogeochemistry; 147:53-69.
Deschaseaux E., O'Brien J., Siboni N., Petrou K., Seymour J. (2019). Shifts in dimethylated sulfur concentrations and microbiome composition in the red-tide causing dinoflagellate Alexandrium minutum during a simulated marine heat wave. Biogeosciences; 16: 4377-4391.
Petrou, K., Baker K.G., Nielsen D.A., Hancock A.M., Schulz K.G., Davidson A.T. (2019). Acidification diminishes diatom silica production in the Southern Ocean. Nature Climate Change; 9: 781-786.
Hurtado-McCormick V., Kahlke T., Petrou K., Jeffries T., Ralph P.J., Seymour J.R. (2019). Regional and microenvironmental scale characterization of the Zostera muelleri seagrass microbiome. Frontiers in Marine Science; 10:1011. [Open Access]
Petrou, K., Nielsen, D.A. (2018). Uptake of dimethylsulphoniopropionate (DMSP) by the diatom Thalassiosira weissflogii: a model to investigate the cellular function of DMSP. Biogeochemistry; 141:265-271.
Petrou, K., Nielsen, D.A., Heraud, P. (2018). Single-cell biomolecular analysis of coral algal symbionts reveals opposing metabolic responses to heat stress and expulsion. Frontiers in Marine Science; doi:10.3389/fmars.2018.00110. [Open Access]
Nielsen, D.A., Petrou, K., Gates, R.D. (2018). Coral bleaching from a single cell perspective. The ISME Journal; doi:10.1038/s41396-018-0080-6. [Open Access]
Deppeler, S., Petrou, K., Schulz, K.G., Westwood, K., Pearce, I., McKinlay, J., Davidson, A. (2018). Ocean acidification of a coastal Antarctic marine microbial community reveals a critical threshold for CO2 tolerance in phytoplankton productivity. Biogeosciences,
Gardner, S.G., Nitschke, M.R., Nielsen, D.A., Stat, M., Motti, C.A., Ralph, P.J., Petrou, K. (2017). A multi-trait systems approach reveals a response cascade to bleaching in corals. BMC Biology, 15:117. [Open Access]
Macreadie, P.I., Nielsen, D.A., Seymour, J., Petrou, K., Kelleway, J., Atwood, T., Connolly, R.M., Thomson, A.C.G., Trevathan-Tackett, S., Ralph, P.J. (2017). Managing coasts to sequester more 'blue carbon'. Frontiers in Ecology and the Environment; 15: 206-213. [Open Access]
Gardner, S.G., Raina, J-B., Ralph, P.J., Petrou, K. (2017). Reactive oxygen species (ROS) and dimethylated sulphur compounds in coral explants under acute thermal stress. Journal of Experimental Biology; doi:10.1242/jeb.153049.
Petrou, K., Ralph, P.J., Nielsen D.A. (2017). A novel mechanisms for host-mediated photoprotection in endosymbiotic foraminifera. The ISME Journal; 11:453-462.
Sackett, O., Petrou, K., Reedy, B., Hill, R., Doblin, M., Beardall, J., Ralph, P., Heraud, P. (2016). Snapshot prediction of carbon productivity, carbon and protein content in a Southern Ocean diatom using FTIR spectroscopy. The ISME Journal; 10:416-426.
Jeffries, T.C., Curlevski, N.J., Brown, M.V., Harrison, D.P., Doblin, M.A., Petrou, K., Ralph, P.J., Seymour, J.R. (2016). Partitioning of fungal assemblages across different marine habitats. Environmental Microbiology Reports; 8:235-238.
Baird, M.E., Adams, M.P., Babcock, R.C., Oubelkheir, K., Mongin, M., Wild-Allen, K.A., Skerratt, J., Robson, B.J., Petrou, K., Ralph, P.J., O'Brien, K.R., Carter, A.B., Jarvis, J.C., Rasheed, M.A. (2016). A biophysical representation of seagrass growth for application in a complex shallow-water biogeochemical model. Ecological Modelling; 325:13-27.
Gardner S.G., Nielsen, D.A., Laczka, O., Shimmon, R., Beltran, V.H., Ralph, P.J., Petrou, K. (2016). Dimethylsulfoniopropionate, superoxide dismutase and glutathione as stress response indicators in three corals under short-term hyposalinity stress. Proceedings of the Royal Society B-Biological Sciences; 283:1824.
Doblin, M.A., Petrou, K., Sinutok, S., Seymour, J.R., Messer, L.F., Brown, M.V., Norman, L., Everett, J.D., McInnes, A.S., Ralph, P.J., Thompson, P.A., Hassler, C.S. (2016). Nutrient uplift in a cyclonic eddy increases diversity, primary productivity and iron demand of microbial communities relative to a western boundary current. PeerJ; 4:e1973. [Open Access]
Petrou, K., Kranz, S.A., Trimborn, S., Hassler, C.S., Ameijeiras, S.B., Sackett, O., Ralph, P.J., Davidson, A.T. (2016). Southern Ocean phytoplankton physiology in a changing climate. Journal of plant physiology; 203:135-150.
Alacid, E., Park, M.G., Turon, M., Petrou, K., Garcés, E. (2016). A Game of Russian Roulette for a Generalist Dinoflagellate Parasitoid: Host Susceptibility Is the Key to Success. Frontiers in microbiology; 7:769. [Open Access]
Tout J., Jeffries T., Petrou K., Tyson G., Webster N., Garren M., Stocker R., Ralph P.J., Seymour J. (2015). Chemotaxis by Natural Populations of Coral Reef Bacteria. The ISME J. DOI:10.1038/ismej.2014.261. [Open Access]
Hill, R., Bellgrove, A., Macreadie, P.I., Petrou, K., Beardall, J., Steven, A., Ralph, P.J. (2015). Can macroalgae contribute to blue carbon? An Australian perspective. Limnology and Oceanography; 60:1689-1706.
Gardner S.G., Nielsen D.A., Petrou K., Larkum A.W.D., Ralph P.J. (2015). Characterisation of coral explants: a model organism for cnidarian-dinoflagellate studies. Coral Reefs; 34:133-142.
Petrou K., Trimborn S., Kühl M., Ralph P.J. (2014). Desiccation stress in two intertidal beachrock biofilms. Marine Biology; 161:1765-1773.
Curtis, E.M., Knight, C., Petrou, K. & Leigh, A. (2014). A comparative analysis of photosynthetic recovery from thermal stress: a desert plant case study. Oecologia, vol. 175, pp. 1051-1061.
Petrou K., Trimborn S., Rost B., Ralph P.J., Hassler C. (2014). The impact of iron limitation on the physiology of the Antarctic diatom Chaetoceros simplex. Marine Biology 161: 925-937. [Open access]
Trimborn S., Thoms S., Petrou K., Kranz S.A., Rost B. (2014). Photophysiological responses of Southern Ocean phytoplankton to changes in CO2 concentrations: Short-term versus acclimation effects. Journal of Experimental Marine Biology and Ecology 451: 44-54. [Open access]
Petrou K., Belgio E., Ruban A.V. (2013). pH sensitivity of chlorophyll fluorescence quenching is determined by the detergent/protein ratio and the state of LHCII aggregation. Biochimica et Biophysica Acta (BBA)-Bioenergetics 1837:1533-1539. [Open access]
Sackett O., Petrou K., Reedy B., De Grazia A., Hill R., Doblin M., Beardall J., Ralph P.J., Heraud P. (2013). Phenotypic plasticity of southern ocean diatoms: key to success in the sea ice habitat?. PLoS ONE; 8: e81185 [Open access]
Petrou K., Jimenez-Denness I., Chartrand K., McCormack C., Rasheed M., Ralph P.J. (2013). Seasonal heterogeneity in the photophysiological response to air exposure in two tropical intertidal seagrass species. Marine Ecology Progress Series; 482: 93-106.
Garcés E., Alacid E., Rene A., Petrou K. & Simó R. (2013). Host-released dimethylsulphide activates the dinoflagellate parasitoid Parvilucifera sinerae. The ISME Journal; 7(5):1065-1068. [Open access]
Chartrand K.M., Rasheed, M., Petrou K., Ralph P.J. (2012). Establishing tropical seagrass light requirements in a dynamic port environment. 12th International Coral Reef Symposium, Cairns, Australia. 15B Seagrasses and seagrass ecosystems.
Petrou K., Kranz S., Doblin M.A., & Ralph P.J. (2012). Photophysiological responses of Fragilariopsis cylindrus (Grunow) to nitrogen depletion at two temperatures. Journal of Phycology; 48:127-136.
Petrou K. & Ralph P.J. (2011). Photosynthesis and net primary productivity in three Antarctic diatoms: possible significance for their distribution in the Antarctic marine ecosystem. Marine Ecology Progress Series; 437:27-40. [Open access]
Petrou K., Hill R., Doblin M., McMinn A., Johnson R., Wright S. & Ralph P.J. (2011). Photoprotection of sea ice microalgal communities from the East Antarctic pack ice. Journal of Phycology, 47: 77-86. [Open access]
Petrou K., Hassler C.S., Doblin M.A., Ralph P.J., Shelly K. & Schoemann V. (2011). Iron and light stress on Phytoplankton populations from the Australian Subantarctic Zone (SAZ). Deep Sea Research II; 58:2200-2211.
Doblin M.A., Petrou K., Shelly K., Westwood K., Van den Ended R., Wright S., Griffiths B. & Ralph P.J. (2011). Diel variation of chl a fluorescence, phytoplankton pigments and productivity in the Sub-Antarctic Zone (SAZ). Deep Sea Research II; 58:2189-2199.
Ralph P.J., Wilhelm C., Lavaud J., Jakob T., Petrou K. & Kranz S. (2011). Fluorescence as a tool to understand changes in photosynthetic electron flow regulation. In Developments in applied phycology (Book Series). Chapter 4 (Eds. D. Suggett, O. Prasil & M. Borowitzka). Springer, Dordrecht Heidelberg.
Petrou K., Hill R., Brown C., Campbell D., Doblin M & Ralph P.J. (2010). Rapid photoprotection in sea ice diatoms from the East Antarctic pack ice. Limnology & Oceanography, 55: 1400-1407.
Cassar N., DiFiore P.J., Barnett B.A., Bender M.L., Bowie A.R., Tilbrook B., Petrou K., Westwood K., Wright S. & Lefevre D. (2010). The influence of iron and light on net community production in the Subantarctic and Polar Frontal Zones. Biogeosciences 8:227-237. [Open access]
Petrou K., Smith R., Doblin M., Ralph P., Shelly K. & Beardall J. (2008). State transitions and non-photochemical quenching of Nutrient-Induced Fluorescence Transients (NIFTs) in phosphorus-starved Dunaliella tertiolecta. Journal of Phycology 44:1204-1211.