Abstract
We evaluated (1) the longitudinal pattern of stream chemistry and (2) the effects of the riparian zone on this longitudinal pattern for nitrate (NO3 −), dissolved organic carbon (DOC), and total dissolved iron (Fe). We selected two small watersheds; the “southern watershed” had an extending riparian wetland and the “northern watershed” had a narrow riparian area. Stream NO3 − concentrations decreased from the spring to outlet of both watersheds. In the southern watershed, stream DOC concentration decreased from the spring to midstream and then increased to the outlet. Stream Fe concentration in the southern watershed longitudinally increased. On the other hand, the northern watershed exhibited no longitudinal pattern for DOC and Fe concentrations. In both watersheds, while NO3 − concentrations in the soil and ground water were lower than those in the stream waters, DOC and Fe concentrations exhibited the opposite patterns. The longitudinal decreases of NO3 − concentrations in both streams and increase of stream Fe in the southern watershed mainly resulted from the inflow of the soil and ground water to the stream. The decrease in stream DOC from the spring to midstream in the southern watershed was due to the deep groundwater having low DOC, while the subsequent increase to the surrounding soil and ground water. Moreover, considerations of stream solute flow with soil and ground water chemistry suggested other mechanisms adding NO3 − and removing/diluting DOC and Fe, especially for the northern watershed; coexistence of oxidizing and reducing conditions in the riparian zone might control the longitudinal concentration change in the stream water chemistry.
Similar content being viewed by others
References
Arai T (1994) Field method in environmental hydrology. Kokonsyoin, Tokyo (in Japanese)
Bormann FH, Likens GE (1979) Pattern and processes in a forested ecosystem. Springer, New York
Bowden WB (1987) The biogeochemistry of nitrogen in freshwater wetlands. Biogeochemistry 4:313–348
Bowden WB, McDowell WH, Asbury CE, Finley AM (1992) Riparian nitrogen dynamics in two geomorphologically distinct tropical rain forest watersheds: nitrous oxide fluxes. Biogeochemistry 18:77–99
Cirmo CP, McDonnell JJ (1997) Linking the hydrologic and biogeochemical controls of nitrogen transport in near-steam zones of temperate-forested catchments: a review. J Hydrol 199:88–120
Dalva M, Moore TR (1991) Sources and sinks of dissolved carbon in a forested swamp catchment. Biogeochemistry 15:1–19
D’Arcy P, Carignan R (1997) Influence of catchment topography on water chemistry in southeastern Quebec Shield lakes. Can J Fish Aquat Sci 54:2215–2227
FAO/Unesco (1974) Soil map of the world, 1:5,000,000, vol 1: legend. Unesco, Paris
Fitzhugh RD, Furman T, Webb JR, Cosby BJ, Driscoll CT (1999) Longitudinal and seasonal patterns of stream acidity in a headwater catchment on the Appalachian Plateau, West Virginia, U.S.A. Biogeochemistry 47:39–62
Ford TE, Naiman RJ (1989) Groundwater–surface water relationships in boreal forest watersheds: dissolved organic carbon and inorganic nutrient dynamics. Can J Fish Aquat Sci 46:41–49
FSERC, Kyoto University. http://www9.ocn.ne.jp/~sibe/index.html. (in Japanese)
Hedin LO, von Fischer JC, Ostrom NE, Kennedy BP, Brown MG, Robertson GP (1998) Thermodynamics constraints on nitrogen transformations and other biogeochemical processes at soil-stream interfaces. Ecology 79:684–703
Johnson NM, Driscoll CT, Eaton JS, Likens GE, McDowell WH (1981) ‘Acid rain’, dissolve aluminum and chemical weathering at the Hubbard Brook Experimental Forest, New Hampshire. Geochim Cosmochim Acta 45:1421–1437
Jones JB Jr, Holmes RM (1996) Surface–subsurface interactions in stream ecosystems. Trends Ecol Evol 11:239–242
Jones JB Jr, Mulholland PJ (1998) Influence of drainage basin topography and elevation on carbon dioxide and methane supersaturation of stream water. Biogeochemistry 40:57–72
Lawrence GB, Driscoll CT (1990) Longitudinal patterns of concentration–discharge relationships in stream water draining the Hubbard Brook Experimental Forest, New Hampshire. J Hydrol 116:147–165
Martin JH, Fitzwater SE (1988) Iron deficiency limits phytoplankton growth in the north-east Pacific subarctic. Nature 331:341–343
Martin JH, Fitzwater SE, Gordon RM (1990) Iron deficiency limits phytoplankton growth in Antarctic water. Glob Biogeochem Cycles 4:5–12
Nelson PN, Baldock JA, Oades JM (1993) Concentration and composition of dissolved organic carbon in streams in relation to catchment soil properties. Biogeochemistry 19:27–50
Ogawa A, Shibata H, Suzuki K, Mitchell MJ, Ikegami Y (2006) Relationship of topography to surface chemistry with particular focus on nitrogen and organic carbon solutes within a forested watershed in Hokkaido, Japan. Hydrol Process 20:251–265
Pinay G, Ruffinoni C, Fabre A (1995) Nitrogen cycling in two riparian forest soils under different geomorphic conditions. Biogeochemistry 30:9–29
Schiff S, Aravena R, Mewhinney E, Elgood R, Waner B, Dillon P, Trumbore S (1998) Precambrian shield wetlands: hydrologic control of the sources and export of dissolved organic matter. Clim Change 40:167–188
Schlesinger WH (1997) Biogeochemistry: an analysis of global change, 2nd edn edn. Academic, San Diego, p 588
Suzuki Y, Kuma K, Kudo I, Hasebe K, Matsunaga K (1992) Existence of stable Fe(II) complex in oxic river water and its determination. Water Res 26:1421–1424
Takeuchi M (1980) Studies on the freezing and thawing of the volcanic ash soils in eastern Hokkaido. I. The seasonal aspects of the freezing and thawing in a plowed field. Bull Kyoto Univ For 52:117–129 (in Japanese with English summary)
Triska FJ, Kennedy VC, Avanzino RJ, Zellweger GW, Bencala KE (1989) Retention and transport of nutrients in a third-order stream in northwestern California: hyporheic processes. Ecology 70:1893–1905
Acknowledgments
We would like to thank all the staff of the Hokkaido Forest Research Station, FSERC, Kyoto University. T. Kuboi helped us to install groundwater wells. The present study was facilitated by the Forest Research Station, Field Science Center for Northern Biosphere, Hokkaido University, especially for the chemical analyses. Dr Sheila F. Christopher suggested many helpful comments and modifications to the draft of this manuscript. Two anonymous referees gave many useful comments to this manuscript. This study was also supported by the JSPS Research Fellowships for Young Scientists.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Nakagawa, Y., Shibata, H., Satoh, F. et al. Riparian control on NO3 −, DOC, and dissolved Fe concentrations in mountainous streams, northern Japan. Limnology 9, 195–206 (2008). https://doi.org/10.1007/s10201-008-0251-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10201-008-0251-7