Decreased water flowing from a forest amended with calcium silicate

Mark B. Green; Amey S. Bailey; Scott W. Bailey; John J. Battles; John L. Campbell; Charles T. Driscoll; Timothy J. Fahey; Lucie C. Lepine; Gene E. Likens; Scott V. Ollinger; Paul G. Schaberg

doi:10.1073/pnas.1302445110

Decreased water flowing from a forest amended with calcium silicate

Mark B. Green, Amey S. Bailey, Scott W. Bailey, John J. Battles, John L. Campbell, Charles T. Driscoll, Timothy J. Fahey, Lucie C. Lepine, Gene E. Likens, Scott V. Ollinger, Paul G. Schaberg

Department of Civil & Environmental Engineering

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

Acid deposition during the 20th century caused widespread depletion of available soil calcium (Ca) throughout much of the industrialized world. To better understand how forest ecosystems respond to changes in a component of acidification stress, an 11.8-ha watershed was amended with wollastonite, a calcium silicate mineral, to restore available soil Ca to preindustrial levels through natural weathering. An unexpected outcome of the Ca amendment was a change in watershed hydrology; annual evapotranspiration increased by 25%, 18%, and 19%, respectively, for the 3 y following treatment before returning to pretreatment levels. During this period, the watershed retained Ca from the wollastonite, indicating a watershed-scale fertilization effect on transpiration. That response is unique in being a measured manipulation of watershed runoff attributable to fertilization, a response of similar magnitude to effects of deforestation. Our results suggest that past and future changes in available soil Ca concentrations have important and previously unrecognized implications for the water cycle.

Original language	English (US)
Pages (from-to)	5999-6003
Number of pages	5
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	110
Issue number	15
DOIs	https://doi.org/10.1073/pnas.1302445110
State	Published - Apr 9 2013

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Green, M. B., Bailey, A. S., Bailey, S. W., Battles, J. J., Campbell, J. L., Driscoll, C. T., Fahey, T. J., Lepine, L. C., Likens, G. E., Ollinger, S. V., & Schaberg, P. G. (2013). Decreased water flowing from a forest amended with calcium silicate. Proceedings of the National Academy of Sciences of the United States of America, 110(15), 5999-6003. https://doi.org/10.1073/pnas.1302445110

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abstract = "Acid deposition during the 20th century caused widespread depletion of available soil calcium (Ca) throughout much of the industrialized world. To better understand how forest ecosystems respond to changes in a component of acidification stress, an 11.8-ha watershed was amended with wollastonite, a calcium silicate mineral, to restore available soil Ca to preindustrial levels through natural weathering. An unexpected outcome of the Ca amendment was a change in watershed hydrology; annual evapotranspiration increased by 25%, 18%, and 19%, respectively, for the 3 y following treatment before returning to pretreatment levels. During this period, the watershed retained Ca from the wollastonite, indicating a watershed-scale fertilization effect on transpiration. That response is unique in being a measured manipulation of watershed runoff attributable to fertilization, a response of similar magnitude to effects of deforestation. Our results suggest that past and future changes in available soil Ca concentrations have important and previously unrecognized implications for the water cycle.",

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AU - Bailey, Scott W.

AU - Battles, John J.

AU - Campbell, John L.

AU - Driscoll, Charles T.

AU - Fahey, Timothy J.

AU - Lepine, Lucie C.

AU - Likens, Gene E.

AU - Ollinger, Scott V.

AU - Schaberg, Paul G.

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Decreased water flowing from a forest amended with calcium silicate

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