Abstract
For a number of experiments on secondary succession on different soils (lasting 9–23 yf) calculations were made of: a) rates of floristic change as measured with the community coefficient of Sørensen (CC), b) rates of cover-based change by the percentage similarity coefficient of Dahl & Hadač (PS), c) rates of change of stages (dominant growth forms). In the calculation of CC and PS the first year of observation and the preceding year have been used as reference years for a given year. Rates of >65% have been ranked as very rapid, rates of 35–65% as rapid, rates of 5–35% as slow, whereas rates of <5% (similarity >95%) indicate temporal stability. Rapid changes of CC are to a large extent confined to the first year only, rapid changes of PS may occur in the following years too. After 5 yr, in many cases CC and PS are as high as ca. 90%, but the values do not exceed 95%. The examples show that rates of change are a useful tool in the description of the succession process.
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Nomenclature follows F. Ehrendorfer: Liste der Gefässpflanzen Mitteleuropas, 2. ed., Stuttgart 1973.
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Bornkamm, R. Rates of change in vegetation during secondary succession. Vegetatio 46, 213–220 (1981). https://doi.org/10.1007/BF00118399
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DOI: https://doi.org/10.1007/BF00118399