Abstract
Relatively high deposition ofnitrogen (N) in the northeastern United States hascaused concern because sites could become N saturated.In the past, mass-balance studies have been used tomonitor the N status of sites and to investigate theimpact of increased N deposition. Typically, theseefforts have focused on dissolved inorganic forms ofN (DIN = NH4-N + NO3-N) and have largelyignored dissolved organic nitrogen (DON) due todifficulties in its analysis. Recent advances in themeasurement of total dissolved nitrogen (TDN) havefacilitated measurement of DON as the residual of TDN− DIN. We calculated DON and DIN budgets using data onprecipitation and streamwater chemistry collected from9 forested watersheds at 4 sites in New England. TDNin precipitation was composed primarily of DIN. Netretention of TDN ranged from 62 to 89% (4.7 to 10 kghaminus 1 yrminus 1) of annual inputs. DON made up themajority of TDN in stream exports, suggesting thatinclusion of DON is critical to assessing N dynamicseven in areas with large anthropogenic inputs of DIN.Despite the dominance of DON in streamwater,precipitation inputs of DON were approximately equalto outputs. DON concentrations in streamwater did notappear significantly influenced by seasonal biologicalcontrols, but did increase with discharge on somewatersheds. Streamwater NO3-N was the onlyfraction of N that exhibited a seasonal pattern, withconcentrations increasing during the winter months andpeaking during snowmelt runoff. Concentrations ofNO3-N varied considerably among watersheds andare related to DOC:DON ratios in streamwater. AnnualDIN exports were negatively correlated withstreamwater DOC:DON ratios, indicating that theseratios might be a useful index of N status of uplandforests.
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References
Aber JD, Nadelhoffer KJ, Steudler P & Melillo JM (1989) Nitrogen saturation in northern forest ecosystems. BioScience 39: 378–386
Aber JD, Magill A, McNulty SG, Boone RD, Nadelhoffer KJ, Downs M & Hallett R (1995) Forest biogeochemistry and primary production altered by nitrogen saturation. Water, Air, and Soil Pollut. 85: 1665–1670
Ågren GI & Bosatta E (1988) Nitrogen saturation in terrestrial ecosystems. Environ. Pollut. 54: 185–197
Buso DC, Martin CW & Hornbeck JW (1984) Potential for acidification of six remote ponds in the White Mountains of New Hampshire. New Hampshire Water Resour. Res. Cent. Res. Rep. No. 43
Chapman PJ, Edwards AC, Reynolds B, Cresser MS & Neal C (1998) The nitrogen content of rivers in upland Britain: The significance of organic nitrogen. In: Hydrology, Water Resources and Ecology in Headwaters, Proceedings of HeadWater’ 98 Conference, April 1998 (pp 443–450). Meran/Merano, Italy. IAHS Publ. No. 248
Currie WS, Aber JD, McDowell WH, Boone RD & Magill AH (1996) Vertical transport of dissolved organic C and N under long-term N amendments in pine and hardwood forests. Biogeochemistry 35: 471–505
Eklund TJ, McDowell WH & Pringle CM (1997) Seasonal variation of tropical precipitation chemistry: La Selva, Costa Rica. Atmos. Environ. 31: 3903–3910
Federer CA (1997) BROOK90: A Simulation Model for Evaporation, Soil Water, and Stream-flow, Version 3.2. Computer Freeware and Documentation. USDA For. Serv., Northeast. For. Exp. Stn., Durham NH
Federer CA, Flynn LD, Martin CW, Hornbeck JW & Pierce RS (1990) Thirty years of hydro-meteorologic data at the Hubbard Brook experimental forest, New Hampshire. USDA For. Serv. Gen. Tech. Rep. NE-141
Federer CA & Lash D (1978) BROOK: A hydrologic simulation model for eastern forests. New Hampshire Water Resour. Res. Cent., Res. Rep. No. 19
Finlay RD, Frostegård Å & Sonnerfeldt AM (1992) Utilization of organic and inorganic nitrogen sources by ectomycorrhizal fungi in pure culture and in symbiosis with Pinus contorta Dougl. Ex Loud. New Phytol. 120: 105–115.
Gundersen P, Callesen I & de Vries W(1998a) Nitrate leaching in forest ecosystems is related to forest floor C/N ratios. Environ. Pollut. 102: 403–407
Gundersen P, Emmett BA, Kjønaas OJ, Koopmans CJ & Tietema A (1998b) Impact of nitrogen deposition on nitrogen cycling in forests: A synthesis of NITREX data. For. Ecol. Manage. 101: 37–55
Harriman R, Curtis C & Edwards AC (1998) An empirical approach for assessing the rela-tionship between nitrogen deposition and nitrate leaching from upland catchments in the United Kingdom using runoff chemistry. Water, Air, and Soil Pollut. 105: 193–203
Hedin LO, Armesto JJ & Johnson AH (1995) Patterns of nutrient loss from unpolluted, old-growth temperate forests: Evaluation of biogeochemical theory. Ecology 76: 493–509
Hedin LO, von Fischer JC, Ostrom NE, Kennedy BP, Brown MG & Robertson GP (1998) Thermodynamic constraints on nitrogen transformations and other biogeochemical processes at soil-stream interfaces. Ecology 79: 684–703
Hornbeck JW & Lawrence GB (1997) Eastern forest fires can have long-term impacts on nitrogen cycling. In: Diverse Forests, Abundant Opportunities, and Evolving Realities, Proceedings 1996 Society of American Foresters Convention, Albuquerque, NM (pp 435–436). Society of American Foresters Convention, November 9–13, 1996, Albuquerque, NM. SAF Publ. 97-03
Hornbeck JW, Martin CW, Pierce RS, Bormann FH, Likens GE & Eaton JS (1986) Clear-cutting northern hardwoods: Effects on hydrologic and nutrient ion budgets. For. Sci. 32: 667–686
Huntington TG, Ryan DF & Hamburg SP (1988) Estimating soil nitrogen and carbon pools in a northern hardwood forest ecosystem. Soil Sci. Soc. Am. J. 52: 1162–1167
Kortelainen P, Saukkonen S & Mattsson T (1997) Leaching of nitrogen from forested catchments in Finland. Globl. Biogeochem. Cycles 11: 627–638
Lajtha K, Seely B & Valiela I (1995) Retention and leaching losses of atmospherically-derived nitrogen in the aggrading coastal watershed of Waquoit Bay, MA. Biogeochemisty 28: 33–54
Lewis WM, Melack JM, McDowell WH, McClain M & Richey JE (1999) Nitrogen yields from undisturbed watersheds in the Americas. Biogeochemistry 46: 149–162
Likens GE & Bormann FH (1995) Biogeochemistry of a Forested Ecosystem (2nd edn). Springer-Verlag, New York
Likens GE, Edgerton ES & Galloway JN (1983) The composition and deposition of organic carbon in precipitation. Tellus 35: 16–24
McDowell WH & Asbury CE (1994) Export of carbon, nitrogen and major ions from three tropical montane watersheds. Limnol. Oceanogr. 39: 111–125
McDowell WH, Currie WS, Aber JD & Yano Y (1998) Effects of chronic nitrogen amend-ments on production of dissolved organic carbon and nitrogen in forest soils. Water, Air, and Soil Pollut. 105: 175–182
McDowell WH & Likens GE (1988) Origin, composition, and flux of dissolved organic carbon in the Hubbard Brook Valley. Ecol. Monogs. 58: 177–195
McDowell WH & Wood T (1984) Podzolization: Soil processes control dissolved organic carbon concentrations in stream water. Soil Sci. 137: 23–32
McNulty SG, Aber JD & Boone RD (1991) Spatial changes in forest floor and foliar chemistry of spruce-fir forests across New England. Biogeochemistry 14: 13–29
Merriam J, McDowell WH & Currie WS (1996) A high-temperature catalytic oxidation technique for determining total dissolved nitrogen. Soil Sci. Soc. Am. J. 60: 1050–1055.
Newbold JD, Sweeney BW, Jackson JK & Kaplan LA (1995) Concentrations and export of solutes from six mountain streams in northwestern Costa Rica. J. North Am. Benthol. Soc. 14: 21–37
Northup RR, Yu Z, Dahlgren RA & Vogt KA (1995) Polyphenol control of nitrogen release from pine litter. Nature 377: 227–229
Qualls RG & Haines BL (1992) Biodegradability of dissolved organic matter in forest throughfall, soil solution, and stream water. Soil Sci. Soc Am. J. 56: 578–586
Qualls RG, Haines BL & Swank WT (1991) Fluxes of dissolved organic nutrients and humic substances in a deciduous forest. Ecology 72: 254–266
Russell KM, Galloway JN, Macko SA, Moody JL & Scudlark JR (1998) Sources of nitrogen in wet deposition to the Chesapeake Bay Region. Atmos. Environ. 32: 2453–2465
Scudlark JR, Russell KM, Galloway JN, Church TM & Keene WS (1998) Organic nitrogen in precipitation at the mid-Atlantic U.S. Coast – methods evaluation and preliminary measurements. Atmos. Environ. 32: 1719–1728
Seitzinger SP & Sanders RW(1997) Contribution of dissolved organic nitrogen from rivers to estuarine eutrophication. Mar. Ecol. Prog. Ser. 159: 1–12
Sollins P & McCorison FM (1981) Nitrogen and carbon solution chemistry of an old growth coniferous forest watershed before and after cutting. Water Resour. Res. 17: 1409–1418
Sun L, Perdue EM, Meyer JL & Weis J (1997) Use of elemental composition to predict bioavailability of dissolved organic matter in a Georgia river. Limnol. Oceanogr. 42: 714–721
Suzuki Y, Sugimura Y & Itoh T (1985) A catalytic oxidation method for the determination of total nitrogen dissolved in seawater. Mar. Chem. 16: 83–97
Thorne JF, Anderson JE & Horiuchi KM (1988) Cation cycling in a base-poor and base-rich northern hardwood forest ecosystem. J. Environ. Qual. 17: 95–101
Walsh TW (1989) Total dissolved nitrogen in seawater: A new-high-temperature combustion method and a comparison with photo-oxidation. Mar. Chem. 26: 295–311
Yavitt JB & Fahey TJ (1984) An experimental analysis of solution chemistry in a lodgepole pine forest floor. Oikos 43: 222–234
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Campbell, J.L., Hornbeck, J.W., McDowell, W.H. et al. Dissolved organic nitrogen budgets for upland, forested ecosystems in New England. Biogeochemistry 49, 123–142 (2000). https://doi.org/10.1023/A:1006383731753
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DOI: https://doi.org/10.1023/A:1006383731753