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A Model of the Phosphorus Dynamics of Calluna Heathland
S. B. Chapman, R. J. Rose and R. T. Clarke
Journal of Ecology
Vol. 77, No. 1 (Mar., 1989), pp. 35-48
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2260914
Page Count: 14
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(1) The study of nutrient dynamics of heathland is discussed, and the need to examine data from a dynamic and functional rather than a static or budget angle is emphasized. (2) A computer model (PCAL) of the phosphorus and organic matter relationships within a dry ungrazed Calluna vulgaris heathland from southern England is described. (3) The model is used to simulate the development of dune-heath and Calluna heathland. Important features of the model are examined. In particular the importance of the phosphorus adsorption capacity of soil is discussed in relation to behaviour of heathland vegetation in different areas. (4) The model is used to examine possible consequences of management techniques that are applied to heathland areas. (5) Possible developments of the model and the need for specific data are discussed in relation to a wider interpretation and understanding of the heathland habitat.
Journal of Ecology © 1989 British Ecological Society