Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 89. (Budapest 1997)

Szollát, Gy., Stollmayer-Boncz, E. , Standovár, T. ; Kecskés, F.: Vegetation of the Réti-dűlő and Csömöri-tó (Hungary)

3) Mire Willow scrub (Calamagrosti-Salicetum cinereae) This category includes larger willow scrub patches and also small groups and soli­tary bushes of Salix cinerea. Their common characteristic lies in the fact that small and large patches represent two different phases of a regular successional process (from tufted sedge vegetation to willow scrub). This process has gone far in the Réti-dűlő, con­sequently these scrubs are rather species poor. In spite of the fact that the spread of mire willow scrub is disadvantageous for the sedge tuft community, these willow stands are valuable representatives of a community with diminishing habitats all over the country. 4) Drying fen (Succiso-Molinietum) This valuable community deserves attention anywhere in Hungary. The stands of Réti-dűlő are so rich in protected and threatened species, that they can be treated as natu­ral value of high importance within this protected area. They are characterized by the high abundance of Molinia hungarica. In small depressions, where water supply has re­mained the relatively best, several rare species occur: Carex davalliana, Carex nigra, Eriophorum latifolium, Orchis laxiflora, Epipactis palustris, Schoenus nigricans, Koele­ria javorkae, Juncus subnodulosus . The same patches are characterized by high abun­dance of Dactylorhiza incarnata and Parnassia palustris. Other characteristic species are the following: Angelica sylvestris, Cirsium canum, Carex flacca, Carexpanicea, Valeria­na dioica, Ranunculus acris, Rhinanthus minor, Sanguisorba officinalis, Equisetum pa­lustre, Trifolium pratense, Galium verum, Centaurea pannonica, Vicia cracca, Tetrago­nolobus maritimus ssp. siliquosus, Achillea asplenifolia, Briza media, Festuca pratensis, Holcus lanatus, Deschampsia caespitosa, Blysmus compressus. In certain parts the ex­panse of Phragmites australis is considerable. 5) Wet meadow This vegetation type covers the eastern part of the area (cf. Fig. 3), though it has a wide transitional zone toward the drying fen community. Several of the characteristic species indicate slight salt accumulation in the soil profile: Achillea asplenifolia, Carex distans, Tetragonolobus maritimus ssp. siliquosus. Other species characterizing this vegetation unit are as follows: Agrostis stolonifera, Alopecurus pratensis, Carex panicea, Equisetum palustre, Festuca pratensis, Ononis arvensis, Trifolum pratense. Even in this part of the Réti-dűlő Dactylorhiza incarnata is relatively abundant. 6) Mesic meadow This grassland type inhabits a slightly higher part of the area than wet meadows or drying fens. There is no direct ground water effect (or lasts very short). Vegetation is dominated by grasses like Alopecurus pratensis, Arrhenatherum elatius, Dactylis glomer­ata, Festuca pratensis, Holcus lanatus, Poa pratensis, Poa triviális, or at more degraded parts also by Agropyron repens, Calamagrostis epigeios. A few individuals of Koeleria javorkae occur in this meadow type, too. Besides grasses, common herbs of mesic grass­lands are characteristic. 7) Gallery wood (Salicetum albae-fragilis) remnant There used to be a narrow but contiguous strip of gallery wood along the creek. Most of the old willow and poplar trees were cut in 1993 when deepening of the water­course took place. In Fig. 3, as a result of the good resolution, solitary old Salix alba indi­viduals are also marked.

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