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Perspectives

The Rise of Plants and Their Effect on Weathering and Atmospheric CO2

Science
25 Apr 1997
Vol 276, Issue 5312
pp. 544-546

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References and Notes

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Retallack G. J. Science 1997 276 583
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Algeo T. J., Berner R. A., Maynard B. J., Scheckler S. E. GSA Today 1994 5 45
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Driese S. G., Mora C. I., Gensel P. G., Edwards D. Early Land Plants and Their Environments (in press)
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Elick J. M., Driese S. G., Mora C. I. in preparation.
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Berner R. A., Caldeira K. in preparation
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Cerling T. E. Am. J. Sci. 1991 291 377;
Ekart D. D. and, Cerling T. E., Geol. Soc. Am. Annu. Meet. Abstr. A-252 (1996);
Yapp C. J. and, Poths H., Nature 355, 342 (1992)6c (C. J. Yapp). [ADS]; Earth Planet. Sci. Lett. 137, 71 (1996);
Mora C. I., Driese S. G., Seager P. G., Geology 19, 1017 (1991).
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Mora C. I., Driese S. G., Colarusso L. A. Science 1996 271 1105
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Sinha A., Stott L. Global Planet. Change 1994 9 297;
Andrews J. E., Tandon S. K., Dennis P. F., J. Geol. Soc. London 152, 1 (1995);
Ghosh P., Bhattacharya S. K., Jani R. A., Palaeogeogr. Palaeoclimatol. Palaeoecol. 114, 285 (1995).
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Berner R. A. Am. J. Sci. 1991 291 339
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Berner R. A. ibid. 1994 294 56
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McElwain J. C., Chaloner W. G. Ann. Bot. 1995 76 389;
Palaios 11, 376 (1996).
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Crowley T. J., North G. R. Paleoclimatology 1991 Oxford Oxford Univ. Press
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Crowley T. J., Baum S. K. J. Geophys. Res. 1995 100 1093
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Drever J. I., Zobrist J. Geochim. Cosmochim. Acta 1992 56 3209;
Arthur M. A. and, Fahey T. J., Soil Sci. Soc. Am. J. 57, 1123 (1993).
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B. T. Bormann et al., in preparation. Loss of Ca in drainage plus storage in the growing biomass and secondary weathering products for “bare” (moss/lichen covered) plots and plots planted with pine trees in the “sandbox” experimental mesocosms at Hubbard Brook, New Hampshire, show a weathering enhancement factor (trees/bare) of about 10 for Ca.
16
K. Moulton and R. A. Berner, unpublished data. Small adjacent areas of western Iceland occupied by native birches, introduced evergreen trees (in a nature preserve), and bare, partly moss-covered ground show an enhancement of weathering (by means of the release of Ca and Mg in drainage and storage in biomass) of factors varying from 5 to 10 for trees versus bare ground.
17
I thank C. J. Mora, J. C. McElwain, W. G. Chaloner, C. Yapp, K. Moulton, and T. E. Cerling for discussions and S. G. Driese for making unpublished data available. Supported by NSF grant EAR 9417325, Department of Energy grant FG02-95ER14522, and American Chemical Society Petroleum Research Fund grant 29132-ACS.

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Science
Volume 276 | Issue 5312
25 April 1997

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Published in print: 25 April 1997

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Robert A. Berner
Department of Geology and Geophysics, Yale University, New Haven, CT 06520-8109, USA.

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