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Science 16 November 1979:
Vol. 206. no. 4420, pp. 834 - 836
DOI: 10.1126/science.206.4420.834
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Articles

Evidence of Acidification of Headwater Streams in the New Jersey Pinelands

ARTHUR H. JOHNSON 1

1 Department of Landscape Architecture and Regional Planning and Department of Geology, University of Pennsylvania, Phiradelphia 19104

Seventeen years of stream pH data indicate a trend of acidification in two small streams in the New Jersey Pine Barrens which drain relatively undisturbed areas. The decline in pH has amounted to approximately 0.4 unit, with an estimated increase in H+ concentration of about 50 microequivalents per liter. The data collected to date are consistent with the postulation of an atmospheric source for the increased H+.

Submitted on January 25, 1979
Revised on September 10, 1979


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Science. ISSN 0036-8075 (print), 1095-9203 (online)