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• Data on the occurrence of Ducellieria chodatii in West-Hungary

  3-10

  Sándor Bancsó

  Views:

  431

  During an algal survey of the peat moss transition bog near Kőszeg, in the Alsó-erdő, which started nearly three years ago, a new, previously unregistered species, Ducellieria chodatii (Ducellier) Teiling, was found in spring 2022. As a pine pollen parasite, its appearance can be linked to the recent increased pollen production in the surrounding pine and pine-mixed stands. Both morphologically and in terms of the environmental conditions of the biotope, the results of the studies were largely con­sistent with previous relevant data in the literature. Differences from previous literature are the lower spatial depth of the habitat and the high conductivity of one of the sample sites. All this knowledge, together with the accompanying photographs, is intended to serve as a contribution not only to re­search on the native occurrence of D. chodatii, but also to research on the morphological, taxonomic characteristics and ecological requirements of the species.

• Contributions to the algal flora of a recently-formed peat moss bog near Kőszeg (W Hungary)

  113–130

  Sándor Bancsó

  Views:

  388

  The Alsó-erdő peat bog near Kőszeg has undergone a significant transformation since its first mention in the literature. In addition to the original single patch, a smaller one appeared a few decades later. The process did not stop and a third unit, discussed here, was formed. The succession of its macrovegetation towards the typical peat moss association started slowly but surely, due to balanced water regime and other optimal environmental conditions. The process is more advanced for the algal vegetation, which shows the characteristics of peat bogs already. The high species diversity found makes the habitat highly valuable itself. Although a special, unique algal species has not been found in previous studies, 27 Desmidiales taxa listed as endangered occur sometimes with high density and make the habitat even more valuable. Based on our results, the area deserves special attention both from the habitat conservation and research point of view. At the same time, its further monitoring can provide crucial information for exploring and understanding the succession of similar habitats, and thereby for their more efficient protection.