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A direct distribution model for regional aquatic acidification
Author(s) -
Small Mitchell J.,
Sutton Michael C.
Publication year - 1986
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr022i013p01749
Subject(s) - alkalinity , acid deposition , environmental science , weathering , distribution (mathematics) , fish <actinopterygii> , hydrology (agriculture) , deposition (geology) , spatial distribution , ecology , soil science , geology , chemistry , geomorphology , mathematics , biology , fishery , sediment , soil water , mathematical analysis , geotechnical engineering , organic chemistry , remote sensing
A model is developed to predict the regional distribution of lake acidification and its effect on fish survival. The model predicts the effect of changes in acid deposition rates on the mean and variance of the regional distribution of lake alkalinity using empirical weathering models with variable weathering factors. The regional distribution of lake alkalinity is represented by a three‐parameter lognorrnal distribution. The regional p H distribution is derived using an explicit p H‐alkalinity relationship. The predicted p H distribution is combined with a fish presence‐absence relationship to predict the fraction of lakes in a region able to support fish. The model is illustrated with a set of 1014 lakes in the Adirondack Park region of New York State. Significant needs for future research for regional aggregation of aquatic acidification models are identified.