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New peer-reviewed papers

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Jan 8, 2015 5:22 AM
Ba, B, and U element partitioning in magnesian calcite skeletons of Octocorallia corals
Barium, boron and uranium element partitioning and oxygen and carbon isotope fractionation of high-Mg calcite skeletons of Octocorallia corals were investigated. The dissolved Ba concentration in seawater and the coral Ba/Ca ratio showed a clear positive correlation. The empirically derived barium partition coefficient is comparable to previous data for not only calcitic corals but also […]

Jan 8, 2015 4:49 AM
Mechanism of O and C isotope fractionation in magnesian calcite skeletons of Octocorallia corals and an implication on their calcification response to ocean acidification
Coral calcification is strongly dependent on both the pH and the dissolved inorganic carbon (DIC) of the calcifying fluid. Skeletal oxygen and carbon isotope fractionation of high-Mg calcite skeletons of \textit{Octocorallia} corals directly record the biological manipulation on sources of DIC in response to environmental changes. The coral skeletons were enriched in light isotopes (16O […]

Jan 8, 2015 4:42 AM
Interpretation and design of ocean acidification experiments in upwelling systems in the context of carbonate chemistry co-variation with temperature and oxygen
Coastal upwelling regimes are some of the most productive ecosystems in the ocean but are also among the most vulnerable to ocean acidification (OA) due to naturally high background concentrations of CO2. Yet our ability to predict how these ecosystems will respond to additional CO2 resulting from anthropogenic emissions is poor. To help address this […]

Jan 8, 2015 4:09 AM
Coastal acidification induced by tidal-driven submarine groundwater discharge in a coastal coral reef system
We identified a barely noticed contributor, submarine groundwater discharge (SGD), to acidification of a coastal fringing reef system in Sanya Bay in the South China Sea based on time-series observations of Ra isotopes and carbonate system parameters. This coastal system was characterized by strong diel changes throughout the spring to neap tidal cycle of dissolved […]

Jan 8, 2015 3:55 AM
Phosphorylation of MAPK-like proteins in three intertidal macroalgae under stress conditions
The presence and activation of mitogen-activated protein kinase (MAPK)-like proteins in 3 macroalgae with different morphology and phylogeny (Ulva rigida, Ellisolandia elongata and Cystoseira tamariscifolia) were studied during the experimental workshop of the International Group on Aquatic Productivity. Macroalgae were exposed in the short term (days) to different carbon and nitrogen levels and raised temperature […]

Jan 8, 2015 3:34 AM
Ocean wanderers
The ocean is a difficult environment to study due to its vast, remote regions. Climate change is impacting on marine biology and we need to better understand how this will manifest. The ocean is full of life, but most of it is too small for the human eye to see. The microscopic plants of the […]

Jan 8, 2015 3:25 AM
Testing the Waters (video & text)
Ocean acidification – known as “the other CO2 problem” – is now also affecting the ecosystems of the Mediterranean. The scientific project MedSeA, funded by the European Community, has been studying the impacts of the phenomenon throughout the Mediterranean region for the last three and a half years. The video, produced by Dutch director Maarten […]

Jan 7, 2015 3:55 AM
Unexpected results from direct measurement, with a torsion microbalance in a closed system, of calcification rates of the coral Agaricia agaricites (Scleractinia:Agariicidae) and concomitant changes in seawater pH
Ocean acidification is impacting the calcification of corals, but the mechanisms of calcification are still unclear. To explore the relationship between calcification and pH, small pieces of coral were suspended from a torsion microbalance in gently stirred, temperature controlled, seawater in a closed chamber. Net calcification rate and pH were continuously monitored while light, temperature […]

Jan 7, 2015 3:35 AM
Osmoregulatory bicarbonate secretion exploits H+-sensitive haemoglobins to autoregulate intestinal O2 delivery in euryhaline teleosts
Marine teleost fish secrete bicarbonate (HCO3 −) into the intestine to aid osmoregulation and limit Ca2+ uptake by carbonate precipitation. Intestinal HCO3 − secretion is associated with an equimolar transport of protons (H+) into the blood, both being proportional to environmental salinity. We hypothesized that the H+-sensitive haemoglobin (Hb) system of seawater teleosts could be […]

Jan 6, 2015 4:12 AM
Effects of CO2-driven ocean acidification on early life stages of marine medaka (Oryzias melastigma)
The potential effects of elevated CO2 level and reduced carbonate saturation state in marine environment on fishes and other non-calcified organisms are still poorly known. In present study, we investigated the effects of ocean acidification on embryogenesis and organogenesis of newly hatched larvae of marine medaka (Oryzias melastigma) after 21 d exposure of eggs to […]