Summary
Current and maximally induced nitrate reductase activity (NRA), total-N, nitrate, K, P, Ca, Mg, Mo and sucrose in leaves ofDeschampsia flexuosa was measured three times during the vegetation period in forests along a deposition gradient (150 km) in south Sweden, in north Sweden where the nitrogen deposition is considerably lower, and at heavily N-fertilized plots. In addition, the interaction between nitrogen nutrition and light was studied along transects from clearings into forest in both south and north Sweden. Plants from sites with high nitrogen deposition had elevated current NRA compared to plants from less polluted sites, indicating high levels of available soil nitrate at the former. Current NRA and total N concentration in grass from sites with high deposition resembled those found at heavily N-fertilized plots. Under such circumstances, the ratio current NRA: maximally induced NRA as well as the concentration of nitrate was high, while the concentration of sucrose was low. This suggests that the grass at these sites was already utilizing a large portion of its capacity to assimilate nitrate. Light was found to play an important role in the assimilation of nitrate; leaf concentration of sucrose was found to be negatively correlated with both nitrate and total N. Consequently, grass growing under dense canopies in south Sweden is not able to dilute N by increasing growth. The diminished capacity of the grass to assimilate nitrate will increase leaching losses of N from forests approaching N saturation.
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References
Aber JD, Nadelhoffer KJ, Steudler P, Melillo JM (1989) Nitrogen saturation in northern forest ecosystems. BioScience 39:378–386
Aerts R, Berendse F (1988) The effect of increased nutrient availability on vegetation dynamics in wet heathland. Vegetatio 76:63–69
Aerts R, Berendse F (1989) Above-ground nutrient turnover and net primary production of an evergreen and a deciduous species in a heatland ecosystem. J Ecol 77:343–356
Breemen N van, Dijk HGF van (1988) Ecosystem effects of atmospheric deposition of nitrogen in The Netherlands. Environ Pollut 54:249–274
Cataldo DA, Haroon M, Schrader LE, Youngs VL (1975) Rapid colorimetric determination of nitrate in plant tissue by nitration of salicylic acid. Commun Soil Sci Plant Anal 6:71–80
Ellenberg H (1979) Zeigerwerte der Gefässpflanzen Mitteleuropas. Scr Geobot 9:1–122
Falkengren-Grerup U (1986) Soil acidification and vegetation changes in deciduous forest in southern Sweden. Oecologia 70:339–347
Gebauer G, Rehder H, Wollenweber B (1988) Nitrate, nitrate reduction and organic nitrogen in plants from different ecological and taxonomical groups of Central Europe. Oecologia 75:371–385
Grime GP, Hodgson JG, Hunt R (1988) Comparative plant ecology: a fundamental approach to common British species. Unwin Hyman, London
Grennfelt P, Hultberg H (1986) Effects of nitrogen deposition on the acidification of terrestrial and aquatic ecosystems. Water Air Soil Pollut 30:945–963
Harmer R, Lee JA (1981) Some effects of temperature on nitrate reductase in upland and lowland populations of pasture grasses. Plant Sci Lett 21:295–303
Hasselrot B, Grennfelt P (1987) Deposition of air pollutants in a wind-exposed forest edge. Water Air Soil Pollut 34:135–143
Holmen H, Nilsson Å, Popovic B, Wiklander G (1976) The optimum nutrition experiment Norrliden. A brief description of an experiment in a young stand of Scots pine (Pinus sylvestris L.). Royal College of Forestry (Stockholm), Departments of Forest Ecology and Forest Soils, Research Notes, No 26
Högberg P (1990) Forests losing large quantities of nitrogen have elevated15N:14N ratios. Oecologia 84:229–231
Högberg P, Granström A, Johansson T, Lundmark-Thelin A, Näsholm T (1986) Plant nitrate reductase activity as an indicator of availability of nitrate in forest soils. Can J For Res 16:1165–1169
Högberg P, Johannisson C, Nicklasson H, Högbom L (1990) Shoot nitrate reductase activities of field-layer species in different forest types. I. Scand J For Res 5:449–456
Högbom L, Högberg P (1991) Dynamics of soil nitrate after forest fertilization as monitored by the plant nitrate reductase assay. For Ecol Manage, in press
Höhne H, Fiedler HJ, Ilgen G (1981) Untersuchungen über den Mineralstoffgehalt vonDeschampsia flexuosa (L.) P.B. als Bestandteil von Fichtenforst-Ökosystemen. Flora 171:199–215
Lee JA, Stewart GR (1978) Ecological aspects of nitrogen metabolism. Adv Bot Res 6:1–43
Tamm C-O (1989) Comparative and experimental approaches to the study of acid deposition effects on soils as substrate for forest growth. Ambio 18:184–191
Tutin TG, Heywood VH, Burges NA, Valentine DH, Walters SM, Webb DA (1964–1980) Flora Europea Vols. I–V. Cambridge University Press, Cambridge
Tyler G (1989) Interacting effects of soil acidity and canopy cover on the species composition of field-layer vegetation in oak/hornbeam forests. For Ecol Manage 28:101–114
Steen E, Larsson K (1986) Carbohydrates in roots and rhizomes in higher plants. New Phytol 104:339–346
Woodin SJ, Lee JA (1987) The effects of nitrate, ammonium and temperature on nitrate reductase activity inSphagnum species. New Phytol 105:103–115
Woodin SJ, Press MC, Lee JA (1985) Nitrate reductase activity inSphagnum fuscum in relation to wet deposition of nitrate from the atmosphere. New Phytol 99:381–388
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Högbom, L., Högberg, P. Nitrate nutrition ofDeschampsia flexuosa (L.) Trin. in relation to nitrogen deposition in Sweden. Oecologia 87, 488–494 (1991). https://doi.org/10.1007/BF00320410
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DOI: https://doi.org/10.1007/BF00320410