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Reevaluation of the oxygen isotopic composition of planktonic foraminifera: Experimental results and revised paleotemperature equations
Cultured planktonic foraminifera, Orbulina universa (symbiotic) and Globigerina bulloides (nonsymbiotic), are used to reexamine temperature:δ18O relationships at 15°–25°C. Relationships for bothExpand
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Effect of seawater carbonate concentration on foraminiferal carbon and oxygen isotopes
Stable oxygen and carbon isotope measurements on biogenic calcite and aragonite have become standard tools for reconstructing past oceanographic and climatic change. In aquatic organisms, 18O/16OExpand
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Assessing the reliability of magnesium in foraminiferal calcite as a proxy for water mass temperatures
Though many studies on the Mg contents in the calcitic tests of foraminifers exist, the processes controlling its uptake are still a matter of debate. Laboratory cultures offer an excellentExpand
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Direct effects of CO2 concentration on growth and isotopic composition of marine plankton
The assessment of direct effects of anthropogenic CO 2 increase on the marine biota has received relatively little attention compared to the intense research on CO 2 -related responses of theExpand
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Temperature and salinity limits for growth and survival of some planktonic foraminifers in laboratory cultures
The biological response to extreme temperatures and salinities is investigated in the laboratory for seven species of planktonic foraminifera: Globigerinoides sacculi/er (Brady), GlobigerinoidesExpand
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Seawater pH control on the boron isotopic composition of calcite: evidence from inorganic calcite precipitation experiments
Abstract Experiments involving boron co-precipitation with calcite have been carried out inorganically under controlled pH conditions (7.9 ± 0.05, 8.3 ± 0.05 and 8.6 ± 0.05) to determine theExpand
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The effect of temperature, salinity and growth rate on the stable hydrogen isotopic composition of long chain alkenones produced by Emiliania huxleyi and Gephyrocapsa oceanica
Abstract. Two haptophyte algae, Emiliania huxleyi and Gephyrocapsa oceanica, were cultured at different temperatures and salinities to investigate the impact of these factors on the hydrogen isotopicExpand
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Reassessing foraminiferal stable isotope geochemistry: Impact of the oceanic carbonate system (experimental results)
Laboratory experiments with living planktic foraminifers show that the δ13C and δ18O values of shell calcite decrease with increasing sea water pH and/or carbonate ion concentration. The effect hasExpand
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Assessing scleractinian corals as recorders for paleo-pH: Empirical calibration and vital effects
Abstract Laboratory experiments on the branching, symbiont-bearing coral genus Porites and Acropora have been carried out to determine the dependence of the skeletal boron isotopic composition (δ11B)Expand
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Microsensor studies of photosynthesis and respiration in the symbiotic foraminifer Orbulina universa
Abstract Oxygen and pH microelectrodes were used to investigate the microenvironment of the planktonic foraminifer Orbulina universa and its dinoflagellate endosymbionts. A diffusive boundary layerExpand
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