Abstract
Both the qualitative and the quantitative changes in water chemistry elicited during the passage of water through the ecosystem are related in part to the process of chemical weathering. The bulk ionic composition of water entering the Hubbard Brook ecosystem is essentially characterized by acid salts, such as H2SO4, HNO3, and HCl. In contrast, water leaving the system is characterized mainly by neutral salts, such as CaSO4, Na2SO4, Mg(NO3)2, and to a lesser extent by chlorides and bicarbonates. This qualitative change in chemistry exemplifies the general chemical weathering reactions. This reaction and some of the chemical pathways in an open system, such as the Hubbard Brook watershed ecosystem, are shown in Figure 40.
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Weathering
Bailey, S.W. (1994). Biogeochemistry of aluminum and calcium in a linked forest- aquatic ecosystem. Ph.D. Thesis. Syracuse University, Syracuse, NY. 86 pp.
Likens, G.E., C.T. Driscoll, D.C. Buso, T.G. Siccama, C.E. Johnson, D.F. Ryan. G.M. Lovett, T. Fahey, and W.A. Reiners. (1994). The biogeochemistry of potassium at Hubbard Brook. Biogeochemistry, 25: 61–125.
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© 1995 Springer-Verlag New York, Inc.
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Likens, G.E., Bormann, F.H. (1995). Weathering. In: Biogeochemistry of a Forested Ecosystem. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-4232-1_5
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DOI: https://doi.org/10.1007/978-1-4612-4232-1_5
Publisher Name: Springer, New York, NY
Print ISBN: 978-0-387-94351-0
Online ISBN: 978-1-4612-4232-1
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