Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 72. (Budapest 1980)

P. Komáromy, Zs.: Algae living on the shore of some Hungarian astatic salt lakes

Table 2. Continuation Epithemia sorex — 18.4 5.8 — Eunotia veneris 4.7 7.8 4.1 — Gomphonema ventricosum 4.7 — — 2 Hantzschia amphyoxis 9.5 10.5 38.2 2 Navicula sp. 4.7 13.1 14.7 — Navicula minuscula 4.7 — — — Navicula hungarica — 2.6 4.1 2 Navicula cincta — 2.6 5.8 2—3 Navicula appendiculata — 2.6 4.1 — Navicula gregaria 9.5 — 4.1 2—3 Navicula constricta — 2.6 — — Navicula rynchocephala 23.8 5.2 — 2 Nitzschia sp. 14.2 5.2 5.8 — Nitzschia frustulum 4.7 — 5.8 — Nitzschia palea 4.7 — — — Nitzschia inconspicua 14.2 7.8 2.9 — Nitzschia kuetzingiana — 2.6 2.8 — Pinnularia sp. 4.7 7.8 — — Pinnularia intermedia — 2.6 — — Pinnularia subcapitata — — 2.9 — Surirella peisonis 4.7 — — 2—4 Note: 1 — littoral zone; 2 — transitional zone; 3 — the upper part of the shore. The occurrence of the species reported by Kiss

(1975); 2 —rare; 3-4 — common monas, Strombomonas, Glenodinium, Pediastrum, etc.) which frequently occur in the water, cou Id not found either in the transitional or on the upper part of the shore. The members of these genera, getting out of the water, are destroyed, so species diversity suddenly decreases. A small part (20) of the occurring species may be found both in water and on the shore (e.g. Anabaena variabilis, Calothrix braunii, Lyngbya limnetica, L.martensiana, Microcoleus paludosus, Oscillatoria lemmermannii, Phormidium ambiguum, Ph. foveolarum, Gongrosira trentepohliopsis, Cymbella ajfinis, Gomphonema ventricosum, some Navicula sp. and Surirella peisonis). Some of them were recorded as frequent species not only in the water but in the soil samples, too (see Table 2). If we take into consideration the change in the frequency of the common species, it can be established that some of them display gradually decreasing frequency, receding from the water, as it was found for Lyngbya limnetica, Phormidium fragile and all of the representatives of Chlorophyta and some of the Diatomeae (Chrysophyta). However, the frequency value of the aerophytic species increased abruptly, e.g. Chroococcus minutus, Ch. paliidus, Gloeocapsa punctata, Microcoleus paludosus, Phormidium corium and Hantzschia amphyoxis and some Navicula species. Sixty-seven species of algae identified from ninety-three samples are arranged tabularly according to their localities (Table 3). Most of the species belong to the Cyanophyta. In this respect there is no difference between the results of the present and the previous examinations on the algal flora of the Kiskunság National Park (Kiss 1975, KOMÁROMY 1979). According to data in Table 3, it may be stated that in all the four examined areas Cyanophyta are dominant. On the shore of Kondor-tó, 51 alga taxa were identified (25 Cyanophyta, 18 Chrysophyta, 1 Euglenophyta and 7 Chlorophyta) ; the most widespread ones were Calothrix braunii, Chroococcus pallidus, Nostoc commune, N. microscopicum, Phormidium angustissimum, Ph. ambiguum, Ph. foveolarum, Ph. papyraceum, Microthamnion kuetzingianum, Gongrosira trentepohliopsis, Diatoma sp., Hantzschia amphyoxis, Navicula sp. and Nitzschia inconspicua. Kelemen-szék is also relatively rich in species. 21 Cyanophyta, 9 Chrysophyta and 3 Chlorophyta were identified from 35 samples. The most frequent species were Phormidium foveolarum, Nostoc commune, Phormidium ambiguum, Lyngbya martensiana, Microcoleus paludosus, M. sociatus and Phormidium corium. On the shore of Szappan-szék, a total of 26 species were identified, among them 12 Cyanohyta, 12 Chrysophyta and 2 Chlorophyta. In the 21 samples, the following species were recorded several times: Chroococcus minutus, Gloeocapsa arenaria, Gl. punctata, Microcoleus paludosus, Nostoc microscopicum, Phormidium angustissimum, Ph. ambiguum, Ph. foveolarum, Diatoma sp. and Epithemia sorex. Few samples (6) were gathered from the surrounding of Szívós-szék of them 8 Cyanophyta and 6 Chrysophyta were identified, mostly common soil algae.