Professor Peter Ralph

Director, Plant Functional Biology & Climate Change
Professor, School of the Environment
Associate Member, Centre for Technology in Water and Wastewater
Core Member, Plant Functional Biology & Climate Change

BAppSc (NSWIT), MAIBiol (UTS), PhD (UTS)

Email: Peter.Ralph@uts.edu.au
Phone: +61 2 9514 4070
Fax: +61 2 9514 4079
Room: CB04.05.43B (map)
Mailing address: PO Box 123, Broadway NSW 2007, Australia

Edit your profile

Biography

As the Executive Director of The Plant Functional Biology and Climate Change Cluster (C3) I have the privilege of leading a dynamic, multidisciplinary team dedicated to improving our predictions about the impacts of climate change.

Over the past 20 years my research has examined seagrasses, freshwater macrophytes, macroalgae and terrestrial plants from the scale of whole organisms to cellular and biochemical processes.

Due to the expertise that I have developed in the measurement of photosynthetic processes in seagrasses I am a member of the Blue Carbon International Scientific Working Group, formed under the auspices of the International Union for the Conservation of Nature, United Nations Environmental Program and the Intergovernmental Oceanographic Commission. In addition I am also an invited member of the Integrated Marine Observing System National Bio-optical Working Group.

Within C3 I am also the Team Leader for the Aquatic Processes Group (APG): a team of both highly experienced and outstanding early career marine ecologists, biologists and oceanographers. The APG has developed major strengths in assessing the impact of human-induced change, as well as climate change, on ecologically important aquatic plant systems.

Within the APG I oversee specialist teams that support research into


UTS is the administering body for the newly established CSIRO Marine and Coastal Carbon Biogeochemistry Cluster of which I am the Co- Leader. This brings together the expertise of CSIRO and the research capabilities of eight Australian universities in Australia's largest ever coastal blue carbon accounting, mapping and measurement study.

Professional

Professional Activities
Review staff for Marine Ecology-Progress Series

Co-convener of ARC network meeting BEAM January 2004

Co-convened conference: International Workshop on Marine Applications of Chlorophyll a Fluorescence.
University of Sydney, 4-8 February, 2000.

Co-convened conference: International Workshop on Marine Applications of Chlorophyll a Fluorescence.
University of Sydney, 4-8 April, 1998.

Co-convener of ASPAB
University of Sydney, 13-15 February 2006


Recent Media Releases


Employment History
Current Position Professor
2001-2003 University Reader
1999-2002 Senior Lecturer
1997-1999 Lecturer and Program Director of Coastal Resource Management, UTS
1997-1998 Associate Lecturer, UTS

Teaching areas

  • Marine Primary Producers
  • Coastal and Marine Ecosystems
  • Tropical Reef Ecosystems
  • GIS and Resource Assessments
  • Australian Biota
  • Biocomputing
  • Mapping and Remote Sensing
  • Biology and Ecology for Engineers

Research

Research interests

Aquatic Photosynthesis Group
Seagrass Inc

Research supervision: Yes

Projects

Selected Peer-Assessed Projects

Novel Oxygen Sensing Tools for Monitoring the Effects of Dredging on Australian Seagrass Communities - LP110200454

Peridinin-chlorophyll-protein complex: unraveling the unique photosynthetic apparatus of dinoflagellates in response to climatic variation.

Effects of acidification on carbon sequestration by macrophytes

Enhanced bio-optical capability to improve the estimation of primary production within the CSIRO environmental modelling suite

Calibration of IMOS Working Group Bio-optical Problem

Bio-optical model of Antarctic sea-ice algae photosynthesis

From the Ice to the Open Ocean: Threats to Phytoplankton Productivity in Antarctica from a Changing Climate - Scholarship: Katerina Petrou

Photosynthetic condition of Southern Ocean phytoplankton

Seagrass tolerance of oil spills - scaling of pollution impacts

When corals bleach, what is the weakest photosynthetic link?

Assessing the impacts of inorganic carbon availability on coral bleaching

Photokinetic Adaptation Of Sea-Ice Algae

Are Antarctic macroalgae more sensitive to contaiminants than lower latitude species?

Identification of the photochemical trigger of coral bleaching and the role of photoprotective mechanisms

Environmental impact assessment of coastal pollution using macroalgae gamete condition

Seagrass diuron exposure

Publications

Book Chapters

Ralph, P.J., Wilhelm, C., Lavaud, J., Jakob, T., Petrou, K. & Kranz, S.A. 2011, 'Fluorescence as a Tool to Understand Changes in Photosynthetic Electron Flow Regulation' in David J Suggett, Michael A Borowitzka and Ondrej Prasil (eds), Chlorophyll a Fluorescence in Aquatic Sciences : Methods and Applications, Springer, United Kingdom, pp. 75-89.
View/Download from: UTSePress | Publisher's site

Warner, M.E., Lesser, M.P. & Ralph, P.J. 2011, 'Chlorophyll fluorescence in reef building corals' in David J Suggett, Michael A Borowitzka and Ondrej Prasil (eds), Chlorophyll a Fluorescence in Aquatic Sciences : Methods and Applications, Springer, UK, pp. 209-221.
View/Download from: UTSePress | Publisher's site

Larkum, A., Drew, E.A. & Ralph, P.J. 2006, 'Photosynthesis and Metabolism in Seagrasses at the Cellular Level' in Larkum AWD; Orth RJ; Dyarte CM (eds), Seagrasses:Biology, Ecology and Conservation, Springer, Dordrecht, The Netherlands, pp. 323-345.
View/Download from: UTSePress

Ralph, P.J., Tomasko, D., Moore, K.A., Seddon, S. & Macinnis-Ng, C.M. 2006, 'Human impacts on seagrasses: Eutrophication, sedimentation and contamination' in Larkum AWD; Orth RJ; Duarte CM (eds), Seagrasses: Biology, Ecology and Conservation, Springer, The Netherlands, pp. 567-593.
View/Download from: UTSePress

Beer, S., Bjork, M., Gademann, R. & Ralph, P.J. 2001, 'Measurements of Photosynthetic Rates in Seagrasses' in Short FT; Coles RG (eds), Global Seagrass Research Methods, Elsevier Science, Netherlands, pp. 183-198.

Journal Articles

Buxton, L.J., Takahashi, S., Hill, R. & Ralph, P.J. 2012, 'Variability in the primary site of photosynthetic damage in Symbiodinium sp. (Dinophyceae) exposed to thermal stress', Journal of Phycology, vol. 48, no. 1, pp. 117-126.
View/Download from: UTSePress | Publisher's site

Gilbert, J.A., Hill, R., Doblin, M.A. & Ralph, P.J. 2012, 'Microbial consortia increase thermal tolerance of corals', Marine Biology, vol. 159, pp. 1763-1771.
View/Download from: Publisher's site

Hill, R., Larkum, A., Prasil, O., Kramer, D.M., Szabo, M., Kumar, V. & Ralph, P.J. 2012, 'Light-induced dissociation of antenna complexes in the symbionts of scleractinian corals correlates with sensitivity to coral bleaching', Coral Reefs, vol. 31, pp. 963-975.
View/Download from: Publisher's site

Jimenez Denness, I.M., Larkum, A., Ralph, P.J. & Kuhl, M. 2012, 'In situ thermal dynamics of shallow water corals is affected by tidal patterns and irradiance', Marine Biology, vol. 159, pp. 1773-1782.
View/Download from: Publisher's site

Jimenez Denness, I.M., Larkum, A., Ralph, P.J. & Kuhl, M. 2012, 'Thermal effects of tissue optics in symbiont-bearing reef-building corals', Limnology and Oceanography, vol. 57, no. 6, pp. 1816-1825.

Macreadie, P.I., Allen, K., Kelaher, B.P., Ralph, P.J. & Skilbeck, C.G. 2012, 'Paleoreconstruction of estuarine sediments reveal human-induced weakening of coastal carbon sinks', Global Change Biology, vol. 18, no. 3, pp. 891-901.
View/Download from: UTSePress | Publisher's site

McMinn, A., Ashworth, C., Bhagooli, R., Martin, A., Salleh, S., Ralph, P.J. & Ryan, K.G. 2012, 'Antarctic Coastal Microalgal Primary Production And Photosynthesis', Marine Biology, vol. 159, no. 12, pp. 2827-2837.
View/Download from: Publisher's site

Petrou, K., Kranz, S.A., Doblin, M.A. & Ralph, P.J. 2012, 'Photophysiological responses of Fragilariopsis cylindrus (Bacillariophyceae) to nitrogen depletion at two temperatures', Journal of Phycology, vol. 48, no. 1, pp. 127-136.
View/Download from: UTSePress | Publisher's site

Seymour, J.R., Doblin, M.A., Jeffries, T.C., Brown, M.V., Newton, K., Ralph, P.J., Baird, M.E. & Mitchell, J.G. 2012, 'Contrasting microbial assemblages in adjacent water masses associated with the East Australian Current', Environmental Microbiology Reports, vol. 4, pp. 548-555.
View/Download from: Publisher's site

Sinutok, S., Hill, R., Doblin, M.A., Kuhl, M. & Ralph, P.J. 2012, 'Microenvironmental changes support evidence of photosynthesis and calcification inhibition in Halimeda under ocean acidification and warming', Coral Reefs, vol. 31, pp. 1201-1213.
View/Download from: Publisher's site

Verhoeven, M.P., Kelaher, B.P., Bishop, M.J. & Ralph, P.J. 2012, 'Epiphyte Grazing Enhances Productivity Of Remnant Seagrass Patches', Austral Ecology, vol. 37, no. 8, pp. 885-892.
View/Download from: Publisher's site

Wangpraseurt, D., Larkum, A., Ralph, P.J. & Kuhl, M. 2012, 'Light gradients and optical microniches in coral tissues', Frontiers in Microbiology, vol. 3, no. 316, pp. 1-9.

Wilson, K.G. & Ralph, P.J. 2012, 'Laboratory testing protocol for the impact of dispersed petrochemicals on seagrass', Marine Pollution Bulletin, vol. 64, no. 11, pp. 2421-2427.
View/Download from: Publisher's site

Behrendt, L., Larkum, A., Norman, A., Qvortrup, K., Chen, M., Ralph, P.J., Sorensen, S.J., Trampe, E. & Kuhl, M. 2011, 'Endolithic chlorophyll d-containing phototrophs', ISME Journal, vol. 5, pp. 1072-1076.
View/Download from: UTSePress | Publisher's site

Doblin, M.A., Petrou, K., Shelly, K., Westwood, K., van den Enden, R., Wright, S., Griffiths, B. & Ralph, P.J. 2011, 'Diel variation of chlorophyll-a fluorescence, phytoplankton pigments and productivity in the Sub-Antarctic and Polar Front Zones south of Tasmania, Australia', Deep Sea Research Part II: Topical Studies in Oceanography, vol. 58, no. 21-22, pp. 2189-2199.
View/Download from: UTSePress | Publisher's site

Earp, A.A., Hanson, C.E., Ralph, P.J., Brando, V.E., Allen, S., Baird, M.E., Clementson, L., Daniel, P., Dekker, A.G., Fearns, P.R., Parslow, J.S., Strutton, P.G., Thompson, P.A., Underwood, M., Weeks, S. & Doblin, M.A. 2011, 'Review of fluorescent standards for calibration of in situ fluorometers: Recommendations applied in coastal and ocean observing programs', Optics Express, vol. 19, no. 27, pp. 26768-26782.
View/Download from: UTSePress

Hill, R., Brown, C.M., DeZeeuw, K., Campbell, D.A. & Ralph, P.J. 2011, 'Increased rate of D1 repair in coral symbionts during bleaching is insufficient to counter accelerated photo-inactivation', Limnology and Oceanography, vol. 56, no. 1, pp. 139-146.
View/Download from: UTSePress

Jimenez Denness, I.M., Kuhl, M., Larkum, A. & Ralph, P.J. 2011, 'Effects of flow and colony morphology on the thermal boundary layer of corals', Journal of the Royal Society Interface, vol. 8, no. 65, pp. 1785-1795.
View/Download from: UTSePress | Publisher's site

Petrou, K., Hassler, C.S., Doblin, M.A., Shelly, K., Schoemann, V., van den Enden, R., Wright, S. & Ralph, P.J. 2011, 'Iron-limitation and high light stress on phytoplankton populations from the Australian Sub-Antarctic Zone (SAZ)', Deep Sea Research Part II: Topical Studies in Oceanography, vol. 58, no. 21-22, pp. 2200-2211.
View/Download from: UTSePress | Publisher's site

Petrou, K., Doblin, M.A. & Ralph, P.J. 2011, 'Heterogeneity in the photoprotective capacity of three Antarctic diatoms during short-term changes in salinity and temperature', Marine Biology, vol. 158, no. 5, pp. 1029-1041.
View/Download from: UTSePress | Publisher's site

Petrou, K., Hill, R., Doblin, M.A., McMinn, A., Johnson, R., Wright, S.W. & Ralph, P.J. 2011, 'Photoprotection of sea-ice microalgal communities from the east Antarctic pack ice', Journal of Phycology, vol. 47, no. 1, pp. 77-86.
View/Download from: UTSePress | Publisher's site

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, vol. 437, pp. 27-40.
View/Download from: UTSePress

Sinutok, S., Hill, R., Doblin, M.A., Wuhrer, R. & Ralph, P.J. 2011, 'Warmer more acidic conditions cause decreased productivity and calcification in subtropical coral reef sediment-dwelling calcifiers', Limnology and Oceanography, vol. 56, no. 4, pp. 1200-1212.
View/Download from: UTSePress

Ulstrup, K., Kuhl, M., van Oppen, M.J., Cooper, T.F. & Ralph, P.J. 2011, 'Variation in photosynthesis and respiration in geographically distinct populations of two reef-building coral species', Aquatic Biology, vol. 12, pp. 241-248.
View/Download from: UTSePress

Csaszar, N., Ralph, P.J., Frankham, R., Berkelmans, R. & van Oppen, M.J. 2010, 'Estimating the Potential for Adaptation of Corals to Climate Warming', PLoS ONE, vol. 5, no. 3, pp. 1-8.
View/Download from: UTSePress | Publisher's site

Herrera-Silveira, J.A., Cebrian, J., Hauxwell, J., Ramirez-Ramirez, J. & Ralph, P.J. 2010, 'Evidence of negative impacts of ecological tourism on turtlegrass (Thalassia testudinum) beds in a marine protected area of the Mexican Caribbean', Aquatic Ecology, vol. 44, no. 1, pp. 23-31.
View/Download from: UTSePress | Publisher's site

Lilley, R., Ralph, P.J. & Larkum, A. 2010, 'The determination of activity of the enzyme Rubisco in cell extracts of the dinoflagellate alga Symbiodinium sp. by manganese chemiluminescence and its response to short-term thermal stress of the alga', Plant Cell and Environment, vol. 33, no. 6, pp. 995-1004.
View/Download from: UTSePress | Publisher's site

McMinn, A., Pankowskii, A., Ashworth, C., Bhagooli, R., Ralph, P.J. & Ryan, K. 2010, 'In situ net primary productivity and photosynthesis of Antarctic sea ice algal, phytoplankton and benthic algal communities', Marine Biology, vol. 157, no. 6, pp. 1345-1356.
View/Download from: UTSePress | Publisher's site

Petrou, K., Hill, R., Brown, C.M., Campbell, D.A., Doblin, M.A. & Ralph, P.J. 2010, 'Rapid photoprotection in sea-ice diatoms from the East Antarctic pack ice', Limnology and Oceanography, vol. 55, no. 3, pp. 1400-1407.
View/Download from: UTSePress

Seery, C.R. & Ralph, P.J. 2010, 'Ecological relevance of a chlorophyll a fluorescence ecotoxicological endpoint', Toxicological and Environmental Chemistry, vol. 92, no. 8, pp. 1529-1540.
View/Download from: UTSePress | Publisher's site

Wright, J.T., Byers, J.E., Koukoumaftsis, L., Ralph, P.J. & Gribben, P.E. 2010, 'Native species behaviour mitigates the impact of habitat-forming invasive seaweed', Oecologia, vol. 163, no. 2, pp. 527-534.
View/Download from: UTSePress | Publisher's site

Baird, A.H., Bhagooli, R., Ralph, P.J. & Takahashi, S. 2009, 'Coral bleaching: the role of the host', Trends In Ecology & Evolution, vol. 24, no. 1, pp. 16-20.
View/Download from: UTSePress | Publisher's site

Buxton, L.J., Badger, M. & Ralph, P.J. 2009, 'Effects Of Moderate Heat Stress And Dissolved Inorganic Carbon Concentration On Photosynthesis And Respiration Of Symbiodinium Sp (Dinophyceae) In Culture And In Symbiosis', Journal of Phycology, vol. 45, no. 2, pp. 357-365.
View/Download from: UTSePress | Publisher's site

Collier, C., Lavery, P., Ralph, P.J. & Masini, R. 2009, 'Shade-induced response and recovery of the seagrass Posidonia sinuosa', Journal Of Experimental Marine Biology And Ecology, vol. 370, no. 1-2, pp. 89-103.
View/Download from: UTSePress | Publisher's site

Hill, R., Ulstrup, K. & Ralph, P.J. 2009, 'Temperature Induced Changes In Thylakoid Membrane Thermostability Of Cultured, Freshly Isolated, And Expelled Zooxanthellae From Scleractinian Corals', Bulletin of Marine Science, vol. 85, no. 3, pp. 223-244.
View/Download from: UTSePress

Strom, D., Ralph, P.J. & Stauber, J.L. 2009, 'Development of a Toxicity Identification Evaluation Protocol Using Chlorophyll-a Fluorescence in a Marine Microalga', Archives Of Environmental Contamination And Toxic..., vol. 56, no. 1, pp. 30-38.
View/Download from: UTSePress | Publisher's site

Collier, C., Lavery, P., Ralph, P.J. & Masini, R. 2008, 'Physiological characteristics of the seagrass Posidonia sinuosa along a depth-related gradient of light availability', Marine Ecology-Progress Series, vol. 353, pp. 65-79.
View/Download from: UTSePress

Hill, R. & Ralph, P.J. 2008, 'Dark-induced reduction of the plastoquinone pool in zooxanthellae of scleractinian corals and implications for measurements of chlorophyll a fluorescence', Symbiosis, vol. 46, pp. 45-56.
View/Download from: UTSePress

Hill, R. & Ralph, P.J. 2008, 'Impact of bleaching stress on the function of the oxygen evolving complex of zooxanthellae from scleractinian corals', Journal of Phycology, vol. 44, no. 2, pp. 299-310.
View/Download from: UTSePress | Publisher's site

Jimenez Denness, I.M., Kuhl, M., Larkum, A. & Ralph, P.J. 2008, 'Heat budget and thermal microenvironment of shallow-water corals: Do massive corals get warmer than branching corals?', Limnology And Oceanography, vol. 53, no. 4, pp. 1548-1561.
View/Download from: UTSePress

Kuhl, M., Holst, G., Larkum, A. & Ralph, P.J. 2008, 'Imaging of oxygen dynamics within the endolithic algal community of the massive coral porites lobata', Journal of Phycology, vol. 44, no. 3, pp. 541-550.
View/Download from: UTSePress | Publisher's site

Roff, G., Ulstrup, K.E., Fine, M., Ralph, P.J. & Hoegh-Guldberg, O. 2008, 'Spatial heterogeneity of photosynthetic activity within diseased corals from the great barrier reef', Journal Of Phycology, vol. 44, no. 2, pp. 526-538.
View/Download from: UTSePress | Publisher's site

Ulstrup, K.E., Hill, R., van Oppen, M.J., Larkum, A. & Ralph, P.J. 2008, 'Seasonal variation in the photo-physiology of homogeneous and heterogeneous Symbiodinium consortia in two scleractinian corals', Marine Ecology Progress Series, vol. 361, pp. 139-150.
View/Download from: UTSePress

Bishop, M.J., Kelaher, B.P., Alquezar, R., York, P.H., Ralph, P.J. & Skilbeck, C.G. 2007, 'Trophic cul-de-sac, Pyrazus ebeninus, limits trophic transfer through an estuarine detritus-based food web', OIKOS, vol. 116, no. 3, pp. 427-438.
View/Download from: UTSePress | Publisher's site

Collier, C., Lavery, P., Masini, R. & Ralph, P.J. 2007, 'Morphological, growth and meadow characteristics of the seagrass Posidonia sinuosa along a depth-related gradient of light availability', Marine Ecology: Progress Series, vol. 337, pp. 103-115.
View/Download from: UTSePress

Hill, R. & Ralph, P.J. 2007, 'Post-bleaching viability of expelled zooxanthellae from the scleractinian coral Pocillopora damicornis', Marine Ecology Progress Series, vol. 352, pp. 137-144.
View/Download from: UTSePress

McMinn, A., Ryan, K.G., Ralph, P.J. & pankowski, a. 2007, 'Spring sea ice photosynthesis, primary productivity and biomass distribution in eastern Antarctica, 2002-2004', Marine Biology, vol. 151, no. 3, pp. 985-995.
View/Download from: UTSePress | Publisher's site

Ralph, P.J., Durako, M.J., Enriquez, S., Collier, C. & Doblin, M.A. 2007, 'Impact of light limitation on seagrasses', Journal of Experimental Marine Biology and Ecology, vol. 350, no. 1-2, pp. 176-193.
View/Download from: UTSePress | Publisher's site

Ralph, P.J., Smith, R.A., Macinnis-Ng, C.M. & Seery, C.R. 2007, 'Use of fluorescence-based ecotoxicological bioassays in monitoring toxicants and pollution in aquatic systems: Review', Toxicological and Environmental Chemistry, vol. 89, no. 4, pp. 631-649.
View/Download from: UTSePress | Publisher's site

Ralph, P.J., Ryan, K.G., Martin, A.J. & Fenton, G. 2007, 'Melting out of sea ice causes greater photosynthetic stress in algae than freezing in', Journal Of Phycology, vol. 43, no. 5, pp. 948-956.
View/Download from: UTSePress | Publisher's site

Ralph, P.J., Larkum, A. & Kuhl, M. 2007, 'Photobiology of endolithic microorganisms in living coral skeletons: 1. Pigmentation, spectral reflectance and variable chlorophyll fluorescence analysis of endoliths in the massive corals Cyphastrea serailia, Porites lutea and Goniastrea australensi', Marine Biology, vol. 152, no. 2, pp. 395-404.
View/Download from: UTSePress | Publisher's site

Ulstrup, K.E., Ralph, P.J., van Oppen, M.J. & Kuhl, M. 2007, 'Inter-polyp genetic and physiological characterisation of Symbiodinium in an Acropora valida colony', Marine Biology: international journal on life in oceans and coastal waters, vol. 153, no. 2, pp. 225-234.
View/Download from: UTSePress | Publisher's site

Charles, A.L., Markich, S.J. & Ralph, P.J. 2006, 'Toxicity of uranium and copper individually, and in combination, to a tropical freshwater macrophyte (Lemna aequinoctialis)', Chemosphere, vol. 62, no. 8, pp. 1224-1233.
View/Download from: UTSePress | Publisher's site

Hill, R. & Ralph, P.J. 2006, 'Photosystem II Heterogeneity of in hospite Zooxanthellae in Scleractinian Corals Exposed to Bleaching Conditions', Photochemistry and Photobiology, vol. 82, no. 6, pp. 1577-1585.
View/Download from: UTSePress | Publisher's site

Ryan, K.G., Hegseth, E.N., Martin, A., Davy, S.K., O'Toole, R., Ralph, P.J., McMinn, A. & Thorn, C.J. 2006, 'Comparison of the microalgal community within fast ice two sites along the Ross Sea coast, Antarctia', Antarctic Science, vol. 18, no. 4, pp. 583-594.
View/Download from: UTSePress | Publisher's site

Seery, C.R., Gunthorpe, L. & Ralph, P.J. 2006, 'Herbicide impact on Hormosira banksii gametes measured by fluorescence and germination bioassays', Environmental Pollution, vol. 140, no. 1, pp. 43-51.
View/Download from: UTSePress | Publisher's site

Ulstrup, K.E., Ralph, P.J., Larkum, A. & Kuehl, M. 2006, 'Intra-colonial variability in light acclimation of zooxanthellae in coral tissues of Pocillopora damicornis', Marine Biology, vol. 149, no. 6, pp. 1325-1335.
View/Download from: UTSePress | Publisher's site

Ulstrup, K.E., Berkelmans, R., Ralph, P.J. & van Oppen, M.J. 2006, 'Variation in bleaching sensitivity of two coral species across a latitudinal gradient on the Great Barrier Reef: the role of zooxanthellae', Marine Ecology Progress Series, vol. 314, pp. 135-148.
View/Download from: UTSePress

Bengtson Nash, S.M., Schreiber, U., Ralph, P.J. & Muller, J.F. 2005, 'The combined SPE: Tox Y-PAM phytotoxicity assay; application and appraisal of a novel Biomonitoring tool for the aquatic environment', Biosensors and Bioelectronics, vol. 20, no. 7, pp. 1443-1451.
View/Download from: UTSePress | Publisher's site

Hill, R. & Ralph, P.J. 2005, 'Diel and seasonal changes in fluorescence rise kinetics of three scleractinian corals', Functional Plant Biology, vol. 32, no. 6, pp. 549-559.
View/Download from: UTSePress | Publisher's site

Hill, R., Frankart, C. & Ralph, P.J. 2005, 'Impact of bleaching conditions on the components of non-photochemical quenching in the zooxanthellae of a coral', Journal Of Experimental Marine Biology And Ecology, vol. 322, no. 1, pp. 83-92.
View/Download from: UTSePress | Publisher's site

Kuehl, M., Chen, M., Ralph, P.J., Schreiber, U. & Larkum, A. 2005, 'A niche for cyanobacteria containing chlorophyll d', Nature, vol. 433, no. 1, pp. 820-820.
View/Download from: UTSePress | Publisher's site

Macinnis-Ng, C.M., Morrison, D.J. & Ralph, P.J. 2005, 'Temporal and spatial variation in the morphology of the brown macroalga Hormosira banksii (Fucales, Phaeophyta)', Botanica Marina, vol. 48, no. 3, pp. 198-207.
View/Download from: UTSePress | Publisher's site

Ralph, P.J., Schreiber, U., Gademann, R., Kuehl, M. & Larkum, A. 2005, 'Coral photobiology studied with a new imaging pulse amplitude modulated fluorometer', Journal Of Phycology, vol. 41, no. 2, pp. 335-342.
View/Download from: UTSePress | Publisher's site

Ralph, P.J., Macinnis-Ng, C.M. & Frankart, C. 2005, 'Fluorescence imaging application: effect of leaf age on seagrass photokinetics', Aquatic Botany, vol. 81, no. 1, pp. 69-84.
View/Download from: UTSePress | Publisher's site

Ralph, P.J. & Gademann, R. 2005, 'Rapid light curves: A powerful tool to assess photosynthetic activity', Aquatic Botany, vol. 82, no. 3, pp. 222-237.
View/Download from: UTSePress | Publisher's site

Ralph, P.J., McMinn, A., Ryan, K.G. & Ashworth, C. 2005, 'Short-term effect of temperature on the photokinetics of microalgae from the surface layers of Antarctic pack ice', Journal Of Phycology, vol. 41, no. 4, pp. 763-769.
View/Download from: UTSePress | Publisher's site

Ralph, P.J., Larkum, A. & Kuehl, M. 2005, 'Temporal patterns in effective quantum yield of individual zooxanthellae expelled during bleaching', Journal Of Experimental Marine Biology And Ecology, vol. 316, no. 1, pp. 17-28.
View/Download from: UTSePress | Publisher's site

Ulstrup, K.E., Hill, R. & Ralph, P.J. 2005, 'Photosynthetic impact of hypoxia on in hospite zooxanthellae in the scleractinian coral Pocillopora damicornis', Marine Ecology-Progress Series, vol. 286, pp. 125-132.
View/Download from: UTSePress

Hill, R., Larkum, A., Frankart, C., Kuehl, M. & Ralph, P.J. 2004, 'Loss of functional Photosystem II reaction centres in zooxanthellae of corals exposed to bleaching conditions: using fluorescence rise kinetics', Photosynthesis Research, vol. 82, pp. 59-72.
View/Download from: UTSePress | Publisher's site

Hill, R., Schreiber, U., Gademann, R., Larkum, A., Kuehl, M. & Ralph, P.J. 2004, 'Spatial heterogeneity of photosynthesis and the effect of temperature-induced bleaching condition in three species of corals', Marine Biology, vol. 144, pp. 633-640.
View/Download from: UTSePress | Publisher's site

Macinnis-Ng, C.M. & Ralph, P.J. 2004, 'In situ impact of multiple pulses of metal and herbicide on the seagrass Zostera capricorni', Aquatic Toxicology, vol. 67, pp. 227-237.
View/Download from: UTSePress | Publisher's site

Macinnis-Ng, C.M. & Ralph, P.J. 2004, 'Variations in sensitivity to copper and zinc among three isolated populations of the seagrass, Zostera capricorni', Journal of Experimental Marine Biology and Ecology, vol. 302, pp. 63-83.
View/Download from: UTSePress | Publisher's site

Ryan, K.G., Ralph, P.J. & McMinn, A. 2004, 'Acclimation of Antarctic bottom-ice algal communities to lowered salinities during melting', Polar Biology, vol. 27, pp. 679-686.
View/Download from: UTSePress | Publisher's site

Choinski, J.S., Ralph, P.J. & Eamus, D. 2003, 'Changes in photosynthesis during leaf expansion in Corymbia gummifera', Australian Journal Of Botany, vol. 51, no. 1, pp. 111-118.
View/Download from: UTSePress | Publisher's site

Hohnberg, D., Ralph, P.J. & Jones, H. 2003, 'Toxicity of the herbicide atrazine at environmental concentrations to Vallisneria Gigantea, assessed using chlorophyll fluorescence', Australasian Journal of Ecotoxicology, vol. 9, pp. 93-100.
View/Download from: UTSePress

Macinnis-Ng, C.M. & Ralph, P.J. 2003, 'In situ impact of petrochemicals on the photosynthesis of the seagrass Zostera capricorni', Marine Pollution Bulletin, vol. 46, no. 11, pp. 1395-1407.
View/Download from: UTSePress | Publisher's site

Macinnis-Ng, C.M. & Ralph, P.J. 2003, 'Short-term response and recovery of Zostera capricorni photosynthesis after herbicide exposure', Aquatic Botany, vol. 76, no. 1, pp. 1-15.
View/Download from: UTSePress | Publisher's site

Macinnis-Ng, C.M. & Ralph, P.J. 2002, 'Towards a more ecologically relevant assessment of the impact of heavy metals on the photosynthesis of seagrass, Zostera capricorni', Marine Pollution Bulletin, vol. 45, no. N/A, pp. 100-106.
View/Download from: Publisher's site

Ralph, P.J. & Short, F.T. 2002, 'Impact of the wasting disease pathogen Labyrinthula zosterae on the photobiology of eelgrass Zostera marina', Marine Ecology Progress Series, vol. 226, no. N/A, pp. 265-271.

Ralph, P.J., Polk, S.M., Moore, K.A., Orth, R.J. & Smith, W.O. 2002, 'Operation of the xanthophyll cycle in the seagrass Zostera marina in response to variable irradiance', Journal of Experimental Marine Biology and Ecology, vol. 271, no. 2, pp. 189-207.
View/Download from: Publisher's site

Ralph, P.J., Gademann, R., Larkum, A. & Kuehl, M. 2002, 'Spatial heterogeneity in active chlorophyll fluorescence and PSII activity of coral tissues', Marine Biology, vol. 141, no. N/A, pp. 639-646.
View/Download from: UTSePress | Publisher's site

Schreiber, U., Gademann, R., Bird, P., Ralph, P.J., Larkum, A. & Kuehl, M. 2002, 'Apparent light requirement for activation of photosynthesis upon rehydration of desicated beachrock microbial mats', Journal of Phycology, vol. 38, no. N/A, pp. 125-134.
View/Download from: UTSePress | Publisher's site

Ralph, P.J., Gademann, R. & Larkum, A. 2001, 'Zooxanthellae Expelled from Bleached Corals at 33¦C Are Photosynthetically Competent', Marine Ecology Progress Series, vol. 220, pp. 163-168.
View/Download from: UTSePress | Publisher's site

Haynes, D., Ralph, P.J., Pranges, J. & Dennison, B. 2000, 'The Impact of the Herbicide Diuron on Photosynthesis in Three Species of Tropical Seagrass', Marine Pollution Bulletin, vol. 41, no. 0, pp. 288-293.

Conference Papers

Chartrand, K., Rasheed, M., Petrou, K., Ralph, P.J. 2012, 'Establishing tropical seagrass light requirements in a dynamic port environment', Cairns, July 2012 in Proceedings of the 12th International Coral Reef Symposium, Cairns, Australia, 9-13 July 2012, ed -, ReefBase, Australia.