| effects of temperature and uv radiation increases on the photosynthetic efficiency in four scleractinian coral species. | experiments were performed on coral species containing clade a (stylophora pistillata, montipora aequituberculata) or clade c (acropora sp., pavona cactus) zooxanthellae. the photosynthetic efficiency (f(v)/f(m)) of the corals was first assessed during a short-term increase in temperature (from 27 degrees c to 29 degrees c, 32 degrees c, and 34 degrees c) and acute exposure to uv radiation (20.5 w m(-2) uva and 1.2 w m(-2) uvb) alone or in combination. increasing temperature to 34 degrees c sign ... | 2007 | 17679722 |
| coral-associated bacteria and their role in the biogeochemical cycling of sulfur. | marine bacteria play a central role in the degradation of dimethylsulfoniopropionate (dmsp) to dimethyl sulfide (dms) and acrylic acid, dms being critical to cloud formation and thereby cooling effects on the climate. high concentrations of dmsp and dms have been reported in scleractinian coral tissues although, to date, there have been no investigations into the influence of these organic sulfur compounds on coral-associated bacteria. two coral species, montipora aequituberculata and acropora m ... | 2009 | 19346350 |
| endozoicomonas montiporae sp. nov., isolated from the encrusting pore coral montipora aequituberculata. | a gram-negative, aerobic, rod-shaped bacterium, designated strain cl-33(t), was isolated from the encrusting pore coral montipora aequituberculata collected from seawater off the coast of southern taiwan. 16s rrna gene sequence analysis showed that the strain clustered closely with endozoicomonas elysicola mkt110(t) (96.7 % similarity). the novel strain required nacl for growth and exhibited optimal growth at 25 degrees c and in the presence of 2-3 % nacl. predominant cellular fatty acids were s ... | 2010 | 19666790 |
| chronic exposure of corals to fine sediments: lethal and sub-lethal impacts. | understanding the sedimentation and turbidity thresholds for corals is critical in assessing the potential impacts of dredging projects in tropical marine systems. in this study, we exposed two species of coral sampled from offshore locations to six levels of total suspended solids (tss) for 16 weeks in the laboratory, including a 4 week recovery period. dose-response relationships were developed to quantify the lethal and sub-lethal thresholds of sedimentation and turbidity for the corals. the ... | 2012 | 22662225 |
| effects of the herbicide diuron on the early life history stages of coral. | the effects of the herbicide diuron on the early life history stages of broadcast spawning and brooding corals were examined in laboratory experiments. fertilisation of acropora millepora and montipora aequituberculata oocytes were not inhibited at diuron concentrations of up to 1000 microg l(-1). metamorphosis of symbiont-free a. millepora larvae was only significantly inhibited at 300 microg l(-1) diuron. pocillopora damicornis larvae, which contain symbiotic dinoflagellates, were able to unde ... | 2005 | 15757736 |
| thalassotalea montiporae sp. nov., isolated from the encrusting pore coral montipora aequituberculata. | a bacterial strain, designated cl-22t, was isolated from an encrusting pore coral, montipora aequituberculata, collected off the coast of southern taiwan. its taxonomic position was investigated using a polyphasic approach. cells of strain cl-22t were gram-stain-negative, aerobic, motile by means of a single polar flagellum, rod-shaped and formed yellow colonies. optimal growth occurred at 30 °c, ph 6.5-7 and in 2 % (w/v) nacl. a neighbour-joining phylogenetic tree, based on 16s rrna gene sequen ... | 2016 | 27431997 |