Search Results - "Ralph, PJ"

Seagrass leaf reddening alters the microbiome of Zostera muelleri by Hurtado-McCormick, V., Kahlke, T., Krix, D., Larkum, A., Ralph, P. J., Seymour, J. R.

“…Seagrasses host an extremely diverse microbiome that plays fundamental roles in seagrass health and productivity but may be sensitive to shifts in host…”
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Seasonal heterogeneity in the photophysiological response to air exposure in two tropical intertidal seagrass species by Petrou, K., Jimenez-Denness, I., Chartrand, K., McCormack, C., Rasheed, M., Ralph, P. J.

“…Photosynthesis, chlorophyll a fluorescence, leaf bio-optical properties and pigments were measured in 2 tropical intertidal seagrass species, Zostera muelleri…”
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Variation in bleaching sensitivity of two coral species across a latitudinal gradient on the Great Barrier Reef: the role of zooxanthellae by Ulstrup, Karin E., Berkelmans, Ray, Ralph, Peter J., van Oppen, Madeleine J. H.

“…The ability of corals to cope with environmental change, such as increased temperature, relies on the physiological mechanisms of acclimatisation and long-term…”
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Post-bleaching viability of expelled zooxanthellae from the scleractinian coral Pocillopora damicornis by Hill, R, Ralph, PJ

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Photosynthetic responses of Halophila ovalis (R. Br.) Hook. f. to osmotic stress by Ralph, Peter J

“…Chlorophyll fluorescence was used to monitor the onset, development and recovery from hyper- and hypo-osmotic stress effects of the seagrass, Halophila ovalis…”
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Rapid light curves: A powerful tool to assess photosynthetic activity by Ralph, Peter J., Gademann, Rolf

“…Rapid light curves provide detailed information on the saturation characteristics of electron transport, as well as the overall photosynthetic performance of a…”
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Photosynthetic impact of hypoxia on in hospite zooxanthellae in the scleractinian coral Pocillopora damicornis by ULSTRUP, Karin E, HILL, Ross, RALPH, Peter J

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Impact of the wasting disease pathogen, Labyrinthula zosterae, on the photobiology of eelgrass Zostera marina by RALPH, Peter J, SHORT, Frederick T

“…Labyrinthula zosterae is clearly shown to be a primary pathogen of eelgrass Zostera marina L., not merely a secondary infection of senescent leaves or an…”
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In situ underwater measurements of photosynthetic activity of coral zooxanthellae and other reef-dwelling dinoflagellate endosymbionts by Ralph, P. J., Gademann, R., Larkum, A. W. D., Schreiber, U.

“…Chlorophyll fluorescence was used to assess the in situ photosynthesis of a range of reef-dwelling endosymbionts. Such non-intrusive in situ measurements…”
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Photosynthesis and net primary productivity in three Antarctic diatoms: possible significance for their distribution in the Antarctic marine ecosystem by Petrou, K., Ralph, P. J.

“…Photosynthesis and net primary productivity were measured in 3 Antarctic diatoms,Fragilariopsis cylindrus,Pseudo-nitzschia subcurvataandChaetocerossp., exposed…”
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A niche for cyanobacteria containing chlorophyll d by Kühl, Michael, Chen, Min, Ralph, Peter J., Schreiber, Ulrich, Larkum, Anthony W. D.

“…The cyanobacterium known as Acaryochloris marina is a unique phototroph that uses chlorophyll d as its principal light-harvesting pigment instead of…”
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Diurnal photosynthetic response of the motile symbiotic benthic foraminiferan Marginopora vertebralis by Sinutok, Sutinee, Hill, Ross, Doblin, Martina A., Ralph, Peter J.

“…Movement of the symbiont-bearing foraminiferan Marginopora vertebralis and photo physiological response to diurnal fluctuations in irradiance were investigated…”
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Morphological, growth and meadow characteristics of the seagrass Posidonia sinuosa along a depth-related gradient of light availability by Collier, CJ, Lavery, PS, Masini, RJ, Ralph, PJ

“…Morphological and growth characteristics of the meadow-forming seagrass Posidonia sinuosa (Cambridge et Kuo), were measured along a depth-related gradient of…”
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Physiological characteristics of the seagrass Posidonia sinuosa along a depth-related gradient of light availability by Collier, CJ, Lavery, PS, Ralph, PJ, Masini, RJ

“…Physiological plasticity has the capacity to prolong seagrass survival under reduced light conditions. However, when light is attenuated across a depth…”
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CORAL PHOTOBIOLOGY STUDIED WITH A NEW IMAGING PULSE AMPLITUDE MODULATED FLUOROMETER by Ralph, Peter J., Schreiber, Ulrich, Gademann, Rolf, Kühl, Michael, Larkum, Anthony W. D.

“…A new high-resolution imaging fluorometer (Imaging-PAM) was used to identify heterogeneity of photosynthetic activity across the surface of corals. Three…”
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Seasonal variation in the photo-physiology of homogeneous and heterogeneous Symbiodinium consortia in two scleractinian corals by Ulstrup, KE, Hill, R, van Oppen, MJH, Larkum, AWD, Ralph, PJ

“…Seasonal variation in the composition of the algal endosymbiont community and photo-physiology was determined in the corals Pocillopora damicornis, which show…”
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SHORT-TERM EFFECT OF TEMPERATURE ON THE PHOTOKINETICS OF MICROALGAE FROM THE SURFACE LAYERS OF ANTARCTIC PACK ICE by Ralph, Peter J., McMinn, Andrew, Ryan, Ken G., Ashworth, Chris

“…Microalgae growing within brine channels (85 psu salinity) of the surface ice layers of Antarctic pack ice showed considerable photosynthetic tolerance to the…”
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Impact of bleaching conditions on the components of non-photochemical quenching in the zooxanthellae of a coral by Hill, Ross, Frankart, Cécile, Ralph, Peter J.

“…Mass coral bleaching events are a worldwide phenomenon, which generally occur during periods of elevated sea surface temperature and intense sunlight. These…”
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Photosynthetic response of Halophila ovalis to heavy metal stress by Ralph, P.J, Burchett, M.D

“…This paper deals with the photosynthetic effects of a range of heavy metals on the seagrass Halophila ovalis. In this study, the photosynthetic response of…”
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Herbicide toxicity of Halophila ovalis assessed by chlorophyll a fluorescence by Ralph, Peter J.

“…Coastal habitats are increasingly being exposed to herbicide contamination from urban and agricultural catchments. The response of a seagrass, Halophila ovalis…”
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