Growth-Limiting Nutrients in Sphagnum-Dominated Bogs Subject to Low and High Atmospheric Nitrogen Supply

The effects of increased nitrogen or phosphorus supply on the productivity of Sphagnum-dominated ombrotrophic bogs in northern and southern Sweden were studied. Atmospheric nitrogen deposition in souther Sweden (high-N site) exceeds that in northern Sweden (low-N site) by about tenfold. Vertical height growth of the Sphagnum carpet was measured by the crankedwire method. Length growth of individuals was measured by autoradiography after labelling with 14 CO 2 . The results of both methods were significantly correlated, but the cranked-wire data were systematically lower. Productivity of Sphagnum at the low-N site increase almost fourfold after additional nitrogen supply (4 g N m −1 year −1 ), but no increase was found after additional phosphorus supply (0.4 g P m −2 year −1 ) (...)

[1]  D. Vitt,et al.  Element concentrations in mosses and surface waters of western Canadian mires relative to precipitation chemistry and hydrology , 1992 .

[2]  J. Verhoeven,et al.  Control of plant growth by nitrogen and phosphorus in mesotrophic fens , 1991 .

[3]  S. Bayley,et al.  Growth, Production, and Decomposition Dynamics of Sphagnum under Natural and Experimentally Acidified Conditions , 1990 .

[4]  A. W. Damman,et al.  Sphagnum macrostructure as an indicator of decay and compaction in peat cores from an ombrotrophic South Swedish peat-bog , 1990 .

[5]  H. Vasander,et al.  Production of eight species of Sphagnum at Suurisuo mire, southern Finland. , 1990 .

[6]  R. S. Clymo,et al.  Transport of carbon and phosphorus compounds about Sphagnum , 1989, Proceedings of the Royal Society of London. B. Biological Sciences.

[7]  W. Armstrong,et al.  The relative roles of internal aeration, radial oxygen losses, iron exclusion and nutrient balance in flood-tolerance of Rumex species , 1989 .

[8]  T. Moore.  Growth and net production of Sphagnum at five fen sites, subarctic eastern Canada , 1989 .

[9]  Robert W. Day,et al.  Comparisons of Treatments After an Analysis of Variance in Ecology , 1989 .

[10]  E. Gorham,et al.  The influence of airborne road dust on the chemistry of Sphagnum mosses , 1988 .

[11]  N. Malmer.  Patterns in the growth and the accumulation of inorganic constituents in the Sphagnum cover on ombrotrophic bogs in Scandinavia. , 1988 .

[12]  N. Malmer,et al.  Biomass, productivity and relative rate of photosynthesis of Sphagnum at different water levels on a South Swedish peat bog , 1988 .

[13]  A. J. Janssen,et al.  Modelled historical concentrations and depositions of ammonia and ammonium in Europe , 1988 .

[14]  S. Bayley,et al.  Experimental Acidification of a Sphagnum-Dominated Peatland: First Year Results , 1987 .

[15]  J. Lee,et al.  The fate of some components of acidic deposition in ombrotrophic mires. , 1987, Environmental pollution.

[16]  M. Press,et al.  THE POTENTIAL IMPORTANCE OF AN INCREASED ATMOSPHERIC NITROGEN SUPPLY TO THE GROWTH OF OMBROTROPHIC SPHAGNUM SPECIES , 1986 .

[17]  B. Wallén.  Above and below ground dry mass of the three main vascular plants on hummocks on a subarctic peat bog. , 1986 .

[18]  H. Rudolph,et al.  Effects of NH+4‐N and NO+3‐N on growth and metabolism of Sphagnum magellanicum , 1986 .

[19]  J. Vermeer.  The effect of nutrient addition and lowering of the water table on shoot biomass and species composition of a wet grassland community (Cirsio-Molinietum Siss. et de Vries, 1942) , 1986 .

[20]  J. Vermeer.  The effect of nutrients on shoot biomass and species composition of wetland and hayfield communities. , 1986 .

[21]  M. Press,et al.  Nitrate reductase activity in Sphagnum fuscum in relation to wet deposition of nitrate from the atmosphere , 1985 .

[22]  R. S. Clymo,et al.  The Limits to Peat Bog Growth , 1984 .

[23]  E. Gorham,et al.  Mineral element composition of Sphagnum fuscum peats collected from Minnesota, Manitoba and Ontario , 1984 .

[24]  M. Press,et al.  Element concentrations in five Sphagnum species in relation to atmospheric pollution , 1984 .

[25]  R. Wieder,et al.  Net Primary Production of the Dominant Bryophytes in a Sphagnum-Dominated Wetland in West Virginia , 1983 .

[26]  P. Ferguson,et al.  The growth of Sphagnum species in the southern Pennines , 1983 .

[27]  R. S. Clymo,et al.  The Ecology of Sphagnum , 1982 .

[28]  J. Ottow,et al.  Iron Toxicity of Rice as A Multiple Nutritional Soil Stress , 1981 .

[29]  M. Sonesson.  Ecology of a subarctic mire. , 1981 .

[30]  T. Rosswall,et al.  NITROGEN CYCLING IN A SUBARCTIC OMBROTROPHIC MIRE , 1980 .

[31]  T. Ingestad,et al.  Nitrogen stress in birch seedlings. II. N, K, P, Ca, and Mg nutrition , 1979 .

[32]  E. Gorham,et al.  The mineral content of Sphagnum fuscum as affected by human settlement , 1978 .

[33]  G. Likens,et al.  The biota and the world carbon budget. , 1978, Science.

[34]  A. W. Damman.  Distribution and movement of elements in ombrotrophic peat , 1978 .

[35]  P. Pakarinen.  Production and nutrient ecology of three Sphagnum species in southern Finnish raised bogs , 1978 .

[36]  K. Tolonen,et al.  Distribution of lead in Sphagnum fuscum profiles in Finland , 1977 .

[37]  B. Rydén,et al.  Stordalen (Abisko), Sweden. , 1975 .

[38]  J. Lee,et al.  Regional and Historical Aspects of Lead Pollution in Britain , 1973, Nature.

[39]  R. S. Clymo.  THE GROWTH OF SPHAGNUM: METHODS OF MEASUREMENT , 1970 .

[40]  P. Best.  Distribution and movements , 1969 .

[41]  C. Tamm.  Some Observations on the Nutrient Turn-Over in a Bog Community Dominated by Eriophorum vaginatum L. , 1954 .