REFERENCES
- Andrus, R. E. (1986). Some aspects of Sphagnum ecology. Can. J. Bot. 64, 416–426.
- Asman, W. A. H. (1987). Atmospheric Behaviour of Ammonia and Ammonium. Dissertation, University of Utrecht.
- Bellamy, D. J. & Rieley, J. (1967). Some ecological statistics of a ‘miniature bog’. Oikos 18,33–40.
- Brock, T. C. M. and Bregman, R. (1989). Periodicity in growth, productivity, nutrient content and decomposition of Sphagnum recurvum var. mucronatum in a fen woodland. Oecologia 80, 44–52.
- Clapham, A. R. (1940). The role of bryophytes in the calcareous fens of the Oxford District. J. Ecol. 28,71–80.
- Clymo, R. S. (1970). The growth of Sphagnum: methods of measurement. J. Ecol. 58, 13–49.
- Clymo, R. S. (1973). The growth of Sphagnum: some effects of environment. J. Ecol. 61, 849–869.
- Clymo, R. S. (1987). Interactions of Sphagnum with water and air. In: Hutchinson, T. C. & Meema, K. M. (eds), Effects of Atmospheric Pollutants on Forests, Wetlands and Agricultural Ecosystems, pp. 513-529. NATO ASI Series, Vol. G16.
- Clymo, R. S. & Hayward, P. M. (1982). The ecology of Sphagnum. In: Smith, A. J. E. (ed.). Bryophyte Ecology, pp. 229–289. Chapman and Hall, London.
- Ferguson, P. & Lee, J. A. (1983). The growth of Sphagnum species in the southern Pennines. J. Bryol. 12, 579–586.
- Ferguson, P., Robinson, R. N., Press, M. C. & Lee, L. A. (1984). Element concentrations in five Sphagnum species in relation to atmospheric pollution. J. Bryol. 13, 107–114.
- Glime, J. M., Wetzel, R. G. & Kennedy, B. J. (1982). The effects of bryophytes on succession from alkaline marsh to sphagnum Bog. American Midi. Nat. 108, 209–223.
- Koerselman, W. (1989). Hydrology and Nutrient Budgets of Fens in an Agricultural Landscape. Dissertation, University of Utrecht.
- Kooijman, A. M. (1992). The decrease of rich fen bryophytes in the Netherlands. Biol. Conservation 59, 139–143.
- Minsterie van Verkeer en Waterstaat (1981). De waterhuishouding van Nederland, SDU, den Haag.
- Molenaar, W. J., Diggelen, R. van & Kooijman, A. M. (1990). Vegetation succession and hydrology in de Bollemaat, de Wieden. Act Botanica Neerlandica 39, 318–319.
- O'Connell, M. (1981). The phytosociology and ecology of Scragh Bog, Co. Westmeath. New Phytol. 87, 139–187.
- Rydin, H. & McDonald, A. J. S. (1985). Tolerance of Sphagnum to water level. J. Bola 13, 571–578.
- SAS Institute Inc. (1985). SAS User's guide: Statistics, 1982 Edition. SAS, Cary NC.
- Segal, S. (1966). Ecological studies of peat-bog vegetation in the North-Western part of the province of Overijssel (The Netherlands). Wentia 15, 109–141.
- Wirdum, G. van(1979). Dynamic aspects of trophic gradients in a mire complex. Comm. Hydrol. Res. TNO (The Hague), Proc. and Inf. 27, 108–128.
- Wirdum, G. van(1991). Vegetation and Hydrology of floating Richfens. Dissertation, University of Amsterdam.