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Detailed Reference Information |
Epstein, B.L., D’Hondt, S., Quinn, J.G., Zhang, J. and Hargraves, P.E. (1998). An effect of dissolved nutrient concentrations on alkenone-based temperature estimates. Paleoceanography 13: doi: 10.1029/97PA03358. issn: 0883-8305. |
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The ratio of 37-carbon diunsaturated to diunsaturated and triunsaturated alkenones (U37K') produced by some haptophytes is widely used as a proxy for past sea surface temperatures. However, our isothermal culturing experiments with Emiliania huxleyi clone CCMP372 show U37K' values to also vary with nutrient availability and cell division rate. These results provide a reasonable explanation for large isothermal variation in U37K' values of single coccolithophorid strains grown in culture. They also suggest that alkenone-based estimates of past sea surface temperatures may have been influenced by dissolved nutrient concentrations as well as by temperature. ¿ 1998 American Geophysical Union |
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Abstract |
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Keywords
Global Change, Oceans, Oceanography, General, Paleoceanography, Oceanography, Biological and Chemical, Organic marine chemistry, Oceanography, Biological and Chemical, Plankton |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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