B. Papp szerk.: Studia Botanica Hungarica 36. 2005 (Budapest, 2005)

Buczkó, Krisztina; Wojtal, A.: Moss inhabiting siliceous algae from Hungarian peat bogs

Sirok, Nyírjes-tó: 7 samples were analysed. This algal flora was found the most diverse (Table 1, Fig. 2). Its Shannon diversity was the highest (4.06), as well as the number of taxa: altogether 46 diatoms were found. Kobayasiella subtilissima was the most abundant and the most characteristic one. Brachysira brébissonii is also a rare diatom in Hungary, here we found it in relatively high numbers (although not shown in Fig. 2). The ratio of cysts/total siliceous algae is 62%. Kőszeg, Nagyláp: On the 5 peat moss samples only 17 taxa could be recorded, Eunotia paludosa was dominant, very abundant in every samples. Parallel to its high amount, the Shannon diversity of the diatoms is low in that locality, accurately 0.56. Only the genus Pinnularia (8 taxa) could contribute remarkably to the number of taxa. Frustulia saxonica, Cymbella cf. gaeumannii are also characteristic peat bog diatoms here. The ratio of cysts/total siliceous algae is somewhat less than 1 %. In spite of this fact diversified flora of variable cysts were found here (Figs 70-81). Farkasfa 1. Fekete-tó: Despite the careful investigation only a few diatom valves were recorded belonging to Eunotia groenlandica and Eunotia paludosa. Fekete-tó cannot be considered typical since it desiccated due to recent dry periods which may led to the high amounts of stomatocysts, as the Chrysophytes appeared to prepare for the resting stage. The ratio of cysts/total siliceous algae is 99%! Borics also reported a very poor diatom community of Fekete-tó, found only 2 diatom species on Sphagna (BORICS 2001). Farkasfa 2. Ördög-tó: Only two single valves of Eunotia bilunaris var. mucophila were found from this locality, with a single stomatocyst. Naturally, it would be unreasonable to calculate the diversity and the portion of cysts. Only 7 diatom taxa were recorded from peat mosses from this location (BORICS 2001). Grajka-patak: 36 diatom taxa were recorded from 5 mosses. Chamaepinnularia mediocris, a small diatom was dominant, along with Eunotia exigua. Borics gave an account of 37 diatom taxa from peat mosses living at Grajka-patak. The almost perfect coincidence must be accidental, but the high number of taxa may refer to the stability of this habitat. The value of Shannon diversity is 3.19. The ratio of cysts/total siliceous algae is low: 4%. Figs 24-35. Peat moss inhabiting diatoms. The scale bar is 10 urn in every SEM photo. The magnification is xl500 except Fig. 24 = Stouroneis anceps Ehr., Grajka-patak; 25-26 = Stauroneis kriegerii Patrick, Bábtava; 27-28 = Kobayasiella sp. 27: Grajka-patak, 28: Nyírjes-tó; 29 = Kobayasiella subtilissima (Cl.) Lange-Bert., Nyírjes-tó; 30 = Hippodonta hungarica (Grun.) Lange-Bert., Metzeltin et Witkowski, Nyíres-tó; 31 = Luticola mutica (Kütz.) D. G. Mann, Nyírjes-tó; 32-33 = Brachysira brébissonii Ross morphotype 1, Nyírjes-tó, Kőszeg; 34 = Mayamaea fossalis (Krasske) Lange-Bert., Bábtava; 35 = Navicula rádiósa Kütz., Nyíres-tó (LM, x900).