Hydro-ecological analysis of the fen system Lieper Posse, eastern Germany
Article first published online: 24 FEB 2009
1991 IAVS - the International Association of Vegetation Science
Journal of Vegetation Science
Volume 2, Issue 4, pages 465–476, August 1991
How to Cite
Van Diggelen, R., Grootjans, A. P., Kemmers, R. H., Kooijman, A. M., Succow, M., De Vries, N. P. J. and Van Wirdum, G. (1991), Hydro-ecological analysis of the fen system Lieper Posse, eastern Germany. Journal of Vegetation Science, 2: 465–476. doi: 10.2307/3236028
- Issue published online: 24 FEB 2009
- Article first published online: 24 FEB 2009
- Received 17 December 1990; Revision received 20 April 1991; Accepted 21 May 1991.
- Ground-water composition;
- Mire regeneration;
- Vegetation reconstruction
Abstract. The Lieper Posse is a calcareous, ground water-fed fen system, situated in the end-moraine area of northeastern Germany. Nowadays the fen is partly drained and the vegetation adversely affected; hence regeneration measures are considered. Here we report a pilot survey of the actual vegetation cover in relation to the hydrological conditions of the system.
The vegetation in the central part of the fen system can be assigned to the Caricetum lasiocarpae, with small areas of Eleocharitetum quinqueflorae. The southern part of the system includes a Ledo-Pinetum sylvestris bog. Along the edges eutrophic forest types are present.
Peat analysis revealed that the system started as an open lake and subsequently changed into a rheophilous mire, ‘percolating mire’. The southern bog has only recently come into being. Hydrological investigations showed that the original mineral-rich ground water had to a large extent been replaced by acid rainwater; this is likely due to the construction of a ditch before 1850. The effects of this drainage on hydrological conditions and some aspects of soil fertility are discussed. Possible consequences for the restoration of calciphilous vegetation types are being considered. It is concluded that the vegetation development is predictable only to a limited extent, which is mainly due to a lack of knowledge on hysteresis effects in both vegetation and soil.