2007

Kühl, M, Holst, G, Larkum, AWD; Ralph PJ (2007) Imaging of oxygen dynamics within the endolithic algal community of the massive coral Porites lobata (Dana). Journal of Phycology (in press)

Collier CJ, Lavery PS, Ralph PJ, Masini RJ (2007) Physiological characteristics of the seagrass Posidonia sinuosa along a depth-related gradient of light availability (in press; 25/7/07) MEPS

Waycott M, Collier C, McMahon K, Ralph P, MCkenzie L, Udy J. and Grech A (2007) Chapter 8 Vulnerability of seagrasses in the great Barrier Reef to climate change. In climate change and the Great Barrier Reef, eds Johnson JE, and Marshall PA. Great Barrier Reef Marine Park Authority and Australian Greenhouse Office, Australia.

Ralph, P.J. M.J. Durako, S. Enríquez, C.J. Collier, M.A. Doblin (2007) Impact of light limitation on seagrasses Journal of Experimental Marine Biology and Ecology 350 176-193.

Ryan KG, Hegseth, E, Martin A, Davy, S, O’Toole R, Ralph PJ, McMinn, A and Thorn, C (2007) Abundance and distribution of the microalgal community within sea-ice along a latitudinal gradient in the Ross Sea, Antarctic Science 18(4) 583-594.

McMinn, A., Ryan, K., Ralph, PJ. Pankowski, A. (2007) Spring sea ice photosynthesis, primary productivity and biomass distribution in eastern Antarctica, 2002–2004 Mar. Biol. 151:985–995.

Ralph, PJ, Ryan, K.G., Martin, A. and Fenton, G. (2007) Melting-out of sea-ice algae causes greater photosynthetic stress than freezing-in J Phycol (in press).

Ralph, PJ., Smith, R., Macinnis-Ng, C.M.O. and Seery, C.R. (2007) Use of fluorescence ecotoxicological assays in monitoring toxicants and pollution in aquatic systems Toxicological and Environmental Chemistry (in press).

Ralph, PJ. A.W.D. Larkum, and M. Kühl. (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 australensis Mar Biology (in press).

2006

Bishop MJ, Kelaher BP, Alquezar RA, York PH, Ralph PJ and Skilbeck CG (2006) Keystone or millstone: negative impacts of a dominant consumer on a detritus-based food web (in press).

Charles AL Markich SJ Ralph PJ (2006) Toxicity of uranium and copper individually and in combination, to a tropical freshwater macrophyte (Lemna aequinoctialis) Chemosphere 1224-1233.

Hill R and Ralph PJ (2006) Photosystem II Heterogeneity of in hospite Zooxanthellae in Scleractinian Corals Exposed to Bleaching Conditions Photochemistry and Photobiology 82(6): 1577-1585.

Larkum AWD, Ralph, PJ Drew E (2006) Photosynthesis in seagrasses. In: Larkum, A. W. D., Orth, R. J., Durate, C. M. (Eds.), Seagrass Biology, Ecology and Conservation Springer.

Ralph, PJ, Tomasko D, S. Seddon, K. Moore C. Macinnis-Ng (2006). Human impact on Seagrasses: Contamination and Eutrophication. In: Larkum, A. W. D., Orth, R. J., Durate, C. M. (Eds.), Seagrass Biology, Ecology and Conservation Springer.

Ryan KG, Hegseth, E, Martin A, Davy, S, O’Toole R, Ralph PJ, McMinn, A and Thorn, C (2006) Abundance and distribution of the microalgal community within sea-ice along a latitudinal gradient in the Ross Sea, Antarctica Antarctic Science 18(4) 583-594.

Seery CR Gunthorpe, L and Ralph PJ (2006) Herbicide Impact on Hormosira banksii gametes measured by fluorescence and germination bioassays. Environmental Pollution. 140 43-51.

Ulstrup, KE Berkelmans, R Ralph, PJ van Oppen M JH (2006) Variation in bleaching sensitivity of two coral species across a latitudinal gradient on the Great Barrier Reef: the role of zooxanthellae  MEPS 314: 135-148.

Ulstrup KE, Ralph PJ, Larkum AWD, Kühl M (2006) Intra-colonial variability in light acclimation of zooxanthellae in coral tissues of Pocillopora damicornis. Mar Biol 149(6):1325-1335.

2005

Bengston-Nash SM, Schreiber U, Ralph PJ, Muller JF (2005) The combined SPE: Toxy-PAM Phytotoxicity Assay; application and appraisal of a novel biomonitoring tool for the aquatic environment. Biosensors and Bioelectronics 20: 1443-1451.

Hill R, Ralph PJ (2005) Diel and seasonal changes in fluorescence rise kinetics of three scleractinian corals. Functional Plant Biology 32; 549-559.

Hill R, Frankart C, Ralph PJ (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 322; 83-92.

Ralph PJ, Larkum AWD, Kuhl M (2005) Temporal patterns in effective quantum yield of individual zooxanthellae expelled during bleaching. JEMBE 316: 17-28.

Ralph P.J., Macinnis-Ng C.M.O., Frankart C (2005) Fluorescence imaging application: effect of leaf age on seagrass photokinetics. Aquatic Botany 81: 69-84.

Ralph PJ and R. Gademann (2005) Rapid Light Curves: A powerful tool for the assessment of Photosynthetic activity. Aquatic Botany 82; 222-237.

Ralph PJ, Ulrich Schreiber, Rolf Gademann, Michael Kühl and Anthony W.D. Larkum (2005) Coral photobiology studied with a new imaging pulse amplitude modulated fluorometer J. Phycol 41; 335-342.

Ralph PJ, McMinn A Ryan K Ashworth C (2005) Short-term effect of temperature on the photokinetics of microalgae from the surface layers of Antarctic pack ice. Journal of Phycology 41 (4) 763-769.

Macinnis-Ng, C.M.O., Morrison, D.A. and Ralph, P.J. (2005) Morphological variation in the brown alga, Hormosira banksii  Botanica Marina 48 198-207.

Ulstrup KE, Hill R, Ralph PJ (2005) Photosynthetic impact of hypoxia on in hospite zooxanthellae in the scleractinian coral Pocillopora damicornis. Marine Ecology Progress Series 286:125-132.

2004

Ryan, KG, Ralph, P, McMinn, A (2004) Acclimation of Antarctic bottom ice algal communities to lowered salinities during melting. Polar Biology 27 (1) 679-686.

Hill R, Larkum AWD, Frankart C, Kühl M, Ralph PJ (2004) Loss of functional photosystem II reaction centres in zooxanthellae of corals exposed to bleaching conditions: using fluorescence rise kinetics Photosynthesis Research 82(1) 59-72.

Macinnis-Ng C.M.O. and Ralph P.J (2004) In situ impact of multiple pulses of metal and herbicide on the seagrass Zostera capricorni. Aquatic Toxicology 67, 227-237.

Hill R, Schreiber U, Gademann R, Larkum AWD, Kühl M, Ralph PJ (2004) Spatial heterogeneity of photosynthesis and the effect of temperature-induced bleaching conditions in three species of corals. Marine Biology, 302: 63-83.

Macinnis-Ng, C.M.O. and P.J. Ralph. (2004) Variations in sensitivity to copper and zinc amongst three populations of the seagrass, Zostera capricorni. Journal of Experimental Marine Biology and Ecology,302; 63-83.

2003

Macinnis-Ng, C.M.O. and Ralph, P.J. (2003) In situ impact of petrochemicals on the photosynthesis of the seagrass Zostera capricorni. Marine Pollution Bulletin, 46 1395-1407.

Choinski, J.S., Jr., Ralph, P.J and D. Eamus (2003) Changes in photosynthesis during leaf expansion in Eucalyptus sieberi Aust. J Botany 51: 1-8.

Hohnberg, D.B., Ralph, P.J., Jones, HA. (2003) Toxicity of the herbicide atrazine at environmental concentrations to Vallisnaria gigantea, assessed using chlorophyll fluorescence. Australasian Journal of Ecotoxicology 9: 93-100.

Macinnis-Ng C.M.O. and Ralph P.J. (2003) Short-term impact and recovery of Zostera capricorni photosynthesis after herbicide exposure. Aquatic Botany 1635, 1-15.

2002

Macinnis-Ng, C.M.O. and Ralph, P.J. (2002) Towards a more ecologically relevant assessment of the impact of heavy metals on the seagrass, Zostera capricorni. Marine Pollution Bulletin 45, 100-106. [View Article]

Ralph, P.J., Gademann R., Larkum, A.W.D. and Kühl, M. (2002) Spatial heterogeneity in active fluorescence and PSII activity of coral tissues. Marine Biology 141: 639-646. [view Article]

Ralph, P.J., Polk, S. Moore. K.A., Orth, R.J., Smith, W.A. (2002) Operation of the xanthophyll cycle in the seagrass Zostera marina in response to variable light. Journal of Experimental Marine Biology and Ecology, 271, 189-207. [View Article]

Ralph P.J. and Short, F (2002) Impact of the wasting disease pathogen, Labyrinthula zosterae, on the photobiology of eelgrass, Zostera marina, Marine Ecology Progress Series 226, 265-271. [View Article]

Schreiber, U., Gademann, R., Bird, P., Ralph, P.J., Larkum, A.W.D., Kühl, M (2002) Apparent light requirements for activation of photosynthesis upon rehydration of desiccated beachrock microbial mats. Journal of Phycology 38, 125-134.

2001

Ralph, P.J. Gademann R. and A.W.D. Larkum (2001). Zooxanthellae expelled from bleached corals at 33C are photosynthetically competent. Marine Ecology Progress Series.220, 163-168. [View Article]

2000

Haynes, D, Ralph, P.J., Prange, J, Denison, W. (2000) Impact of the herbicide diuron on photosynthesis in three species of tropical seagrassMarine. Pollution Bulletin, 41, 288-293. [View Article]

Ralph, P.J. (2000) Herbicide toxicity of Halophila ovalis, assessed by chlorophyll a fluorescence. Aquatic Botany 66; 141-152.

Haynes, D., Ralph, P.J., Mueller, J. Prange, J. Michalek-Wagner, K. (2000) The occurrence and impact of herbicides in the Great Barrier Reef Marine Park. Reef Research 10, 2-4. [View Article]

1999

Ralph, P.J., Larkum, A.W.D, Gademann, R and Schrieber, U. (1999) Photosynthetic responses of coral reef endosymbionts. Marine Ecology Progress Series 180; 139-147. [View Abstract]

Ralph, P.J. (1999) Light-induced photoinhibitory stress responses of laboratory-cultured Halophila ovalis. Botanica Marina 42(1); 11-22.

Ralph, P.J. and Gademann, R. (1999) Photosynthesis of the seagrass Posidonia australis, Hook.f and associated epiphytes, measured by in situ fluorescence analysis. In: D.I. Walker & F.E. Wells (eds) The Seagrass Flora and Fauna of Rottnest Island, Western Australia. pp 63-71. Western Australian Museum, Perth.

Ralph, P.J.(1999) Effect of combined stress on photosynthesis of Halophila ovalis. Aquatic Botany 65; 83-96.

1998

Ralph, P.J., Morrison, D. A. and Addison, A. (1998) Morphometric variation of Hormosira banksii along the New South Wales coast. J. Exp. Marine Biol. and Ecol. 225, 285-300. [View Article]

Ralph P.J. (1998) Photosynthetic response of Halophila ovalis (R. Br.) Hook f. to osmotic stress. Journal of Experimental Marine Biology and Ecology, 227; 203-220. [View Article]

18 Ralph, P.J. and M. D. Burchett (1998) Impact of petrochemicals on the photosynthesis of Halophila ovalis, using chlorophyll fluorescence. Marine Pollution Bulletin 36(6), 429-436. [View Article]

Ralph, P.J. (1998) Photosynthetic response of Halophila ovalis (R. Br) Hook f. to thermal stress. Marine Ecology Progress Series 171, 123-130. [View Abstract]

Ralph, P.J. and M. D. Burchett (1998) Photosynthetic response of Halophila ovalis (R. Br.) Hook. f. to heavy metal stress. Environmental Pollution 103, 91-101. [View Article]

Ralph, P.J., Gademann, R. and Dennison, W. C. (1998) In situ seagrass photosynthesis measured using a submersible pulse amplitude modulated fluorometer. Marine Biology 132, 367-373. [view PDF]

1997

Schreiber, U., Gademann, R., Ralph, P.J. and Larkum A. W. D. (1997) Assessment of photosynthetic performance of Prochloron in Lissoclinum patella by in situ and in hospite chlorophyll fluorescence measurements. Plant Cell Physiol., 38(8), 945-951.

Ralph, P.J.(1996) Diurnal Photosynthetic Patterns of Halophila ovalis (R. Br.) Hook. f. Seagrass Biology: Proceedings of an International Workshop, Rottnest Island, Western Australia 25-29 January, 197-202.

Ralph, P.J. and M. D. Burchett (1995) Photosynthetic responses of Halophila ovalis (R. Br.) Hook. f. to high irradiance stress, using chlorophyll a fluorescence. Aquatic Botany 51, 55-66.

Ralph, P.J., M. D. Burchett and A. Pulkownik, (1992). Distribution of rhizome carbohydrate reserves in the seagrass Posidonia australis Hook f. Aquatic Botany 42, 385-392.

Edited Book Chapter

Beer, S, Bjork, M. Gademann, R and Ralph, P.J. (2000) Measurement of photosynthesis in seagrasses. In: Short, FT and Coles R (eds) Global seagrass research methods. Elsevier Publishers, The Netherlands pp.202-221.

Ralph, P.J., Brown, K.R., Wearing, S. and Nudd, B (1998). GIS - A tool for integrating tourism and mariculture in Wallis Lakes. In: Wearning S. (ed.) Planning, Recreation and Tourism with Austalian Communities, Leisure Planning, Williamstown, pp. 95-102.

Edited Conference Abstract

Pilav-Savic, S, Pressey, R., and Ralph, P.J. (1998) Use of GIS-based planning tool in marine park zoning. Biodiveristy, Biotechnology & Biobusiness; 2nd Asia-Pacific Conference on Biotechnology 23-27 November, Perth Western Australia.

Reports

• Mariculture Assessment of the Shoalhaven Region. (1994)
  Institute of Coastal Resource Management (contributing author).
• Mariculture Assessment of the Wallis Lakes Region.
  (1994) Institute of Coastal Resource Management (contributing author).