Abstract
Ammonium, urea, and nitrate were added to Bear Brook, a second and third order stream in the Hubbard Brook Experimental Forest, New Hampshire. Removal of ammonium and urea during downstream transport coincided with the release of nitrate. Nitrate removal did not occur when it was added alone or with dissolved organic carbon. Laboratory experiments showed that coarse particulate organic material (detritus) and bryophytes taken from the streambed were active in the removal of ammonium from enriched stream water, and in the release of nitrate upon the addition of ammonium.
The patterns of removal and release observed in these experiments suggest a biologically mediated, oxidation process. Budgetary calculations show that the in-stream transformation of nitrogen inputs during summer and autumn could represent 12 to 25 percent of the nitrogen exported as nitrate during winter and spring from heterotrophic streams like Bear Brook. This type of internal cycling affects the timing and form of nitrogen export from small streams draining forested watersheds in the northeastern United States.
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References
Bansal, M. K., 1976. Nitrification in natural streams. J. Wat. Pollut. Cont. Fed. 48: 2380–2393.
Bilby, R. E. & G. E. Likens, 1980. Importance of organic debris dams in the structure and function of stream ecosystems. Ecology 61: 1107–1113.
Bormann, F. H. & G. E. Likens, 1979. Pattern and process in a forested ecosystem. Springer-Verlag, N.Y., 253 pp.
Bremner, J. M., 1965. Inorganic forms of nitrogen. In C. A. Black (ed.), Methods of soil analysis, 2. Agronomy 9: 1200. Am. Soc. Agron., Madison, Wisconsin.
Fisher, D. W., A. W. Gambell, G. E. Likens & F. H. Bormann, 1968. Atmospheric contributions to water quality of streams in the Hubbard Brook Experimental Forest, New Hampshire. Wat. Resour. Res. 4: 1115–1126.
Fisher, S. G. & G. E. Likens, 1973. Energy flow in Bear Brook, New Hampshire: An integrative approach to stream ecosystem metabolism. Ecol. Monogr. 43: 421–439.
Geesey, G. G., R. Mutch, J. W. Costerton & R. B. Green, 1978. Sessile bacteria: An important component of the microbial population in small mountain streams. Limnol. Oceanogr. 23: 1214–1223.
Hill, R. A., 1979. Denitrification in the nitrogen budget of a river ecosystem. Nature 281: 291–292.
Horne, A. J. & C. J. W. Carmiggelt, 1975. Algal nitrogen fixation in California streams: Seasonal cycles. Freshwat. Biol. 5: 461–470.
Johnson, N. M., 1979. Acid rain: Neutralization within the Hubbard Brook Ecosystem and regional implications. Science 204: 497–499.
Johnson, A. H. & R. C. Reynolds, 1977. Chemical character of headwater streams in Vermont and New Hampshire. Wat. Resour. Res. 13: 469–473.
Knolderbarin, B. & J. J. Oertli, 1977. Effect of suspended particles and their sizes on nitrification in surface water. J. Wat. Pollut. Cont. Fed. 49: 1693–1697.
Likens, G. E., F. H. Bormann, R. S. Pierce, J. S. Eaton & N. M. Johnson, 1977. Biogeochemistry of a forested ecosystem. Springer-Verlag, N.Y., 146 pp.
Matulewich, V. A. & M. S. Finstein, 1978. Distribution of autotrophic nitrifying bacteria in a polluted river (the Passaic). Appl. envir. Microbiol. 35: 67–71.
McColl, R. H. S., 1974. Self-purification of small freshwater streams: phosphate, nitrate and ammonia removal. New Zealand J. mar. Freshwat. Res. 8: 375–388.
McDowell, W. H., 1982. Mechanisms Controlling the Organic Chemistry of Bear Brook, N.H. Ph.D. Diss., Cornell Univ., 154 pp.
Meyer, J. L., 1978. Transport and transformation of phosphorus in a forest stream ecosystem. Ph.D. Diss., Cornell Univ., Ithaca, N.Y.
Meyer, J. L., G. E. Likens & J. Sloane, 1981. Phosphorus, nitrogen and organic carbon flux in a headwater stream. Arch. Hydrobiol. 91: 28–44.
Pierce, R. S., C. W. Martin, C. C. Reeves, G. E. Likens & F. H. Bormann, 1972. Nutrient loss from clearcuttings in New Hampshire. Symp. Watersheds in Transition. Ft. Collins, CO. Am. Wat. Resour. Ass. & Colorado St. Univ.: 285–295.
Ruane, R. J. & P. A. Krenkel, 1978. Nitrification and other factors affecting nitrogen in the Holston River. J. Wat. Pollut. Cont. Fed. 50: 2016–2028.
Sloane, J., 1979. Nitrogen flux in small mountain streams in New Hampshire. M.S. Thesis, Cornell Univ., Ithaca, N.Y.
Solorzano, L., 1969. Determination of ammonia in natural waters by the phenolhypochlorite method. Limnol. Oceanogr. 14: 799–801.
Stainton, M. P., 1973: A syringe gas-stripping procedure for gas chromatographic determination of dissolved inorganic and organic carbon in freshwater and carbonates in sediments. J. Fish. Res. Bd Can. 30: 1441–1445.
Stockner, J. G. & K. R. S. Shortreed, 1978. Enhancement of autotrophic production by nutrient addition in a coastal rainforest stream on Vancouver Island. J. Fish. Res. Bd Can. 35: 28–34.
Strickland, J. D. H. & T. R. Parsons, 1972. A practical handbook of seawater analysis. J. Fish. Res. Bd Can. 167: 311 pp.
Swank, W. T. & W. H. Caskey, 1982. Nitrate depletion in a second-order mountain stream. J. envir. Qual. 11: 581–584.
Triska, F. J., J. R. Sedell, K. Cromack, Jr., S. V. Gregory & F. M. McCorison, 1984. Nitrogen budget for a small coniferous forest stream. Ecol. Monogr. 54: 119–140.
Vitousek, P. M., 1977. The regulation of element concentrations in mountain streams in the northeastern United States. Ecol. Monogr. 47: 65–87.
Wetzel, R. G. & B. A. Manny, 1972. Decomposition of dissolved organic carbon and nitrogen compounds from leaves in an experimental hardwater stream. Limnol. Oceanogr. 17: 927–931.
White, J. D., D. P. Schwert, J. P. Ondrako & L. L. Morgan, 1977. Factors affecting nitrification in situ in a heated stream. Appl. envir. Microbiol. 33: 918–925.
Wild, H. E. Jr., C. N. Sawyer & T. C. McMahon, 1971. Factors affecting nitrification kinetics. J. Wat. Pollut. Cont. Fed. 43: 1845–1854.
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Richey, J.S., McDowell, W.H. & Likens, G.E. Nitrogen transformations in a small mountain stream. Hydrobiologia 124, 129–139 (1985). https://doi.org/10.1007/BF00006795
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DOI: https://doi.org/10.1007/BF00006795