Abstract
Concentrations of nitrate in stream water throughout the world are reported to be elevated relative to natural background levels. This enrichment is commonly attributed to anthropogenic activities such as atmospheric emissions1, livestock feeding2, agricultural runoff3,4, timber harvesting practices5 and domestic/industrial effluent discharge4,6. Here we show that bedrock containing appreciable concentrations of fixed nitrogen contribute a surprisingly large amount of nitrate to surface waters in certain California watersheds,o an extent that even small areas of these rocks have a profound influence on water quality. As 75% of the rocks now exposed at the Earth's surface are sedimentary in origin7, and as these rocks contain about 20% of the global nitrogen inventory8, ‘geological’ nitrogen may be a large and hitherto unappreciated source of nitrate to surface waters. Such a natural nitrate source may be especially significant given that nitrate contamination at very low levels can contribute to surface water eutrophication9, may cause infant methaemoglobinaemia (‘blue baby’ syndrome)6 and has been implicated in certain cancers6. In addition, geological nitrogen may be a source of the ‘missing’ nitrogen noted in several biogeochemical studies of ecosystem nitrogen budgets1.
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References
Galloway, J. N., Schlesinger, W. H., Levy, H., Michaels, A. & Schnoor, J. L. Nitrogen fixation: anthropogenic enhancement–environmental response. Glob. Biogeochem. Cycles 9, 235–252 (1995).
Power, J. F. & Papendick, R. I. in Fertilizer Technology and Use (ed. Engelstad, O. P.) 503–520 (Soil Sci. Soc. Am., Madison, Wisconsin, (1985).
Spalding, R. F. & Exner, M. E. Occurrence of nitrate in groundwater—a review. J. Environ. Qual. 22, 393–402 (1993).
Keeney, D. R. in CRC Critical Reviews in Environmental Control (ed. Straub, C. P.) 257–304 (CRC, Boca Raton, Florida, (1986)).
Likens, G. E., Bormann, F. H., Johnson, N. M., Fisher, D. W. & Pierce, R. S. Effects of forest cutting and herbicide treatment on nutrient budgets in the Hubbard Brook watershed-ecosystem. Ecol. Monogr. 40, 23–47 (1970).
Bouchard, D. C., Williams, M. K. & Surampalli, R. Y. Nitrate contamination of groundwater: sources and potential health effects. J. Am. Wat. Works Assoc. 84, 85–90 (1992).
Blatt, H. & Jones, R. L. Proportions of exposed igneous, metamorphic, and sedimentary rocks. Geol. Soc. Am. Bull. 86, 1085–1088 (1975).
Schlesinger, W. H. Biogeochemistry—An Analysis of Global Change (Academic, San Diego, California, (1997)).
Goldman, C. R. Primary productivity, nutrients, and transparency during the early onset of eutrophication in ultra-oligotrophic Lake Tahoe, California–Nevada. Limnol. Oceanogr. 33, 1321–1333 (1988).
Wagner, D. L., Jennings, C. W., Bedrossian, T. L. & Bortugno, E. J. Geologic Map of the Sacramento Quadrangle, California (Calif. Div. Geology, Sacramento, California, (1981)).
Clark, L. D. Stratigraphy and structure of part of the western Sierra Nevada metamorphic belt, California. Prof. Pap. US Geol. Surv. 410, (1964)).
Duffield, W. A. & Sharp, R. V. Geology of the Sierra Foothills melange and adjacent areas, Amador County, California. Prof. Pap US Geol. Surv. 827, (1975)).
Schroeder, P. A. & Ingall, E. D. Amethod for the determination of nitrogen in clays, with application to the burial diagenesis of shales. J. Sedim. Res. 64, 694–697 (1994).
Douglas, L. A. in Minerals in Soil Environments2nd edn (eds Dixon, J. B. & Weed, S. B.) 635–674 (Soil Sci. Soc. Am., Madison, Wisconsin, (1989)).
Kulandaiswamy, V. C. & Seetharaman, S. Anote on Barnes' method of hydrograph separation. J. Hydrol. 9, 222–229 (1969).
Caissie, D., Pollock, T. L. & Conjak, R. A. Variation in stream water chemistry and hydrograph separation in a small drainage basin. J. Hydrol. 178, 137–157 (1996).
Dahlgren, R. A. Comparison of soil solution extraction procedures: effect on solute chemistry. Commun. Soil Sci. Plant Anal. 24, 1783–1794 (1993).
Bundy, L. G. & Meisinger, J. J. in Methods of Soil AnalysisPart 2, Microbiological and Biochemical Properties2nd edn (eds Page, A. L., Miller, R. H. & Kenney, D. R.) 951–984 (Soil Sci. Soc. Am., Madison, Wisconsin, (1982)).
Parfitt, R. L., Percival, H., Dahlgren, R. A. & Hill, L. F. Soil and soil solution chemistry under pasture and radiata pine in New Zealand. Plant Soil 191, 279–290 (1997).
Aber, J. D., Nadelhoffer, K. J., Steudler, P. & Melillo, J. M. Nitrogen saturation in northern forest ecosystems. BioScience 39, 378–386 (1989).
Dahlgren, R. A., Singer, M. J. & Huang, X. Oak tree and grazing impacts on soil properties and nutrients in a California oak woodland. Biogeochemistry 39, 45–64 (1997).
Pavlik, B. M., Muick, P. C., Johnson, S. & Popper, M. Oaks of California (Cachuma, Los Olivos, California, (1991)).
Boyd, S. R., Hall, A. & Pillinger, C. T. The measurement of delta 15N in crustal rocks by static vacuum mass spectrometry: application to the origin of the ammonium in the Cornubian batholith, southwest England. Geochim. Cosmochim. Acta 57, 1339–1347 (1993).
Duit, W., Jansen, J. B. H., van Breemen, A. & Bos, A. Ammonium micas in metamorphic rocks as exemplified by Dome de l'Agout (France). Am. J. Sci. 286, 702–732 (1986).
Eugster, H. P. & Munoz, J. Ammonium micas: possible sources of atmospheric ammonia and nitrogen. Science 151, 683–686 (1965).
Hall, A., Pereira, M. D. & Bea, F. The abundance of ammonium in the granites of central Spain, and the behaviour of the ammonium ion during anatexis and fractional crystallization. Mineral. Petrol. 56, 105–123 (1996).
Kawano, M. & Tomita, K. Mineralogical properties of interstratified ammonium-bearing mica/smectites from Aira, Kagoshima Prefecture, Japan. Mineral. J. 15, 19–31 (1990).
Krohn, M. D., Kendall, C., Evans, J. R. & Fries, T. L. Relations of ammonium minerals at several hydrothermal systems in the western U.S. J. Volcanol. Geotherm. Res. 56, 401–413 (1993).
Meyer, F. M. & Ridgway, J. Ammonium in Witwatersrand reefs: a possible indicator of metamorphic fluid flow. S. Afr. J. Geol. 1994, 343–347 (1991).
Ridgway, J., Appleton, J. D. & Levinson, A. A. Ammonium geochemistry in mineral exploration—comparison of results from the American cordilleras and the southwest Pacific. Appl. Geochem. 5, 475–489 (1990).
Stevenson, F. J. Chemical state of the nitrogen in rocks. Geochim. Cosmochim. Acta 26, 797–809 (1962).
SYSTAT v. 6.0 for Windows(SPSS Inc., Chicago, Illinois, (1996)).
Acknowledgements
We thank Georgia Pacific for helicopter access to high-elevation watersheds during the winter; East Bay Municipal Utilities District, Georgia Pacific, and the US Forest Service for the loan of streamwater autosamplers; J. Munn, B. McGurk, L. Costock, J. Pierner, B. Smith and the Mokelumne River Water Quality Monitoring Committee for logistical support; and J. Jimenez, D. Levine, R. Northup, G. Pauly, J. Shaw, E. Suzuki and D. Walsh for assistance with field work and analysis. This work was supported by the California Dept of Forestry and Fire Protection.
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Holloway, J., Dahlgren, R., Hansen, B. et al. Contribution of bedrock nitrogen to high nitrate concentrations in stream water. Nature 395, 785–788 (1998). https://doi.org/10.1038/27410
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DOI: https://doi.org/10.1038/27410
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