Geochemical investigation of gametogenic calcite addition in the planktonic foraminifera Orbulina universa
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چکیده
منابع مشابه
Temperature influence on the carbon isotopic composition of Globigerina bulloides and Orbulina universa (planktonic foraminifera)
Laboratory experiments with the planktonic foraminifera Globigerina bulloides (nonsymbiotic) and Orbulina universa (symbiotic) were carried out to examine the effects of temperature, irradiance (symbiont photosynthesis), [CO 3 ], and ontogeny on shell δ13C values. In ambient seawater ([CO 3 ] D 171 μmol kg 1), the δ13C of G. bulloides shells decreases 0.11‰ oC , a pattern that likely results fr...
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Stable oxygen isotope ratios of foraminiferal calcite are widely used in paleoceanography to provide a chronology of temperature changes during ocean history. It was recently demonstrated that the stable oxygen isotope ratios in planktonic foraminifera are affected by changes of the seawater chemistry carbonate system: the dO of the foraminiferal calcite decreases with increasing CO3 22 concent...
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Planktonic foraminifera are a source of important geochemical, palaeoceanographic, and palaeontological data. However, many aspects of their ecology remain poorly understood, including whether or not gross morphology has an ecological function. Here, we measure the force needed to crush multiple planktonic foraminiferal morphotypes from modern core top and tow samples. We find significant diffe...
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A dynamic global model for planktonic foraminifera I. Fraile, M. Schulz, S. Mulitza, and M. Kucera Department of Geosystem modelling, University of Bremen, P.O. Box 330440, 28334 Bremen, Germany DFG Research Center Ocean Marigins, University of Bremen, P.O. Box 330440, 28334 Bremen, Germany Institute of Geosciences, Eberhard Karls University of Tübingen, Sigwartstrasse 10, 72076 Tübingen, Germa...
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ژورنال
عنوان ژورنال: Marine Micropaleontology
سال: 2008
ISSN: 0377-8398
DOI: 10.1016/j.marmicro.2008.04.003