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Tétel Szabadon hozzáférhető Cryptogamic communities on flatroofs in the city of Debrecen (East Hungary)(2023) Aszalósné Balogh, Rebeka; Matus, Gábor; Lőkös, László; Adorján, Balázs; Freytag, Csongor; Mészáros, Ilona; Oláh, Viktor; Szűcs, Péter; Erzberger, Peter; Farkas, EditTétel Szabadon hozzáférhető Érdekességek és változások a mecseki völgyek mohaflórájában(2025-10-28) Csiky, János; Erzberger, Peter; Kaló, Orsolya; Nádasdi, Marcell; Wolf, Mátyás; Zakály, Gyula; Sipos, AttilaThe paper discusses the bryophyte flora of 77 sites in the Mecsek Mountains, mainly in deeper valleys. It includes species that are new to the area’s flora and/or endangered in Hungary, as well as mosses that have become more widespread or locally abundant compared to data from 1968 and 1983. The names of the locations, their geographical centers (centroids), and the grid unit IDs of the Hungarian Flora Mapping Programme (HFMP), where the sites are located, are listed and referenced according to their number in the list. Some of the species are national rarities, such as Scleropodium touretii , newly recorded in the Mecsek in 2023. Its second known occurrence in Hungary is reported in the Enumeration. We detail the occurrences of several species new to South Transdanubia, including Dicranum spurium , Diplophyllum albicans , Hypnum jutlandicum , Isothecium myosuroides , Kindbergia praelonga , Rhynchostegiella curviseta , Riccardia palmata , and Sciuro-hypnum plumosum . Additionally, species newly recorded from the Mecsek Mountains include Fontinalis antipyretica , Leptodon smithii , Plagiomnium ellipticum , Pseudocampylium radicale , and Tortula brevissima . For two taxa, we present data of importance not only for the Mecsek, but also for the North-Hungarian Mts: Riccardia palmata , new for the Tornai-karszt, and Dicranum spurium , for which we confirm a very old record in the Zemplén Mts. We also note the widespread, sometimes massive occurrence of some aquatic and subaquatic mosses, e.g. Rhynchostegiella teneriffae , Hygrohypnum luridum , which have been recorded only once in the mountains in the last 50 years. The taxonomically uncertain Hygroamblystegium fluviatile with similar habitat requirements can now be found widely throughout the mountains. New populations of Palustriella commutata , considered endangered and declining in the country, have been found in the Mecsek. The expansion of (sub-)aquatic species is particularly surprising in the light of recent hydroecological studies indicating that the streams in the Mecsek are drying up. The situation is similar regarding Rhynchostegium rotundifolium , previously thought to be a Tilio-Acerion (slope and ravine forest) species, which is legally protected in Hungary and only had one record from the Mecsek in the last century. This forest species is now found in peri-urban, sub-urban, slightly to moderately disturbed and secondary habitats throughout the mountains. Similar to its preference in Germany, outside of semi-natural habitats it occurs mainly on built structures in forest edges, ruins, abandoned mine sites, often in stands mixed with black locust and contaminated with litter. Microeurhynchium pumilum , which prefers sub-Mediterranean and sub-Atlantic climate, shady and humid habitats, has become one of the most widespread and abundant forest bryophytes in the Mecsek, in contrast to its few records 60 years ago. Half (50%) of the new mosses in the flora of the Mecsek can be connected to the cooler boreal biome, while 21% is associated with the milder Mediterranean-Atlantic biome. The average of MAT (mean annual daily mean air temperatures averaged over one year) and MAP (accumulated precipitation amount over one year) of the 14 new species according to BET (Bryophytes of Europe Traits) indicates areas with much lower temperatures (7.7°C) than in Hungary, but with precipitation conditions (749 mm) similar to those in the Mecsek. The vast majority of the new species are extremely rare in Hungary, and are inconsistent with current climate warming trends. In contrast to the mosses with striking increase in records, the detection of new species is likely due to chance, in addition to systematic research at finer spatial scales, rather than to local expansion of the species. However, in the case of expanding and abundant species, it is still an open question whether their dynamics compared to 40-60 year old references are apparent or real: the result of sampling bias in previous surveys or a consequence of climate change. In any case, the abundance of the above mentioned bryophytes in the Mecsek is not consistent with their current Hungarian Red List threat classification, and this cannot be attributed to changes in definitions since 2010. The detected distribution and abundance, as well as the increase in the number of new species in the country within a decade, highlights the need for an updated Red List of Hungarian bryophytes.Tétel Szabadon hozzáférhető Multiclavula mucida (Basidiomycota) a Pannon régióban és más adatok a magyarországi lopvanősző flórához(2023-12-21) Csiky, János; Deme, Judit; Erzberger, Peter; Kovács, Dániel; Németh, Csaba; Sipos, AttilaThe paper deals with the species found during cryptogamic flora mapping in 2023 that are remarkable from a floristic, taxonomic or conservational point of view. We present data from the Bükk Mts of two Trapeliopsis species which appear to be rare in Hungary. Multiclavula mucida , which is apparently a rare basidiomycete lichen species in Europe that prefers humid, montane habitats was discovered in the Mecsek Mts as a new species for the Hungarian flora. Of the knothole moss, Anacamptodon splachnoides , which is now thought to be entomophilic, we communicate the only extant population from Southern Transdanubia. We report the first occurrence of the atlantic-mediterranean Leptodon smithii from the Hungarian side of the Great Hungarian Plain. Numerous data of the corticole Neckera pennata indicate that in Hungary the distributional centre of this species is situated in the county of Baranya in the lowlands. New data from the Bükk Mts underline that in the Pannonian region Buxbaumia viridis is primarily a terricole species of acidophilous beech forests. We communicate the first occurrence from the lowlands of the alien lignicolous Sematophyllum adnatum which is dangerously spreading in Europe, at the same time one of the most vigorous populations in the Pannonian region. The third Hungarian occurrence of Callicladium haldanianum , a species that seems to spread in bogs, as well as the second occurrence of Racomitrium lanuginosum , growing abundantly on an andesite boulder scree in Mátra Mts, are also reported here. Of Phegopteris connectilis we present in photographic documentation the first extant population from Southern Transdanubia, and we discuss whether the first publication from Mecsek Mts is correct or exact. In addition to listing the floristic data, we also briefly discuss the (mis)use of distribution data in the context of climate change, the difficulties of distinguishing the microtaxa of some pteridophytes, e.g. Asplenium adiantum-nigrum agg. and Dryopteris affinis agg., and we correct one of our previously published, erroneous Hedwigia stellata data. Some interesting data of other taxa (such as Leucobryum glaucum , Palustriella commutata , Tetraphis pellucida , Gymnocarpium robertianum , Ophioglossum vulgatum ) are also mentioned in the paper.Tétel Szabadon hozzáférhető Preliminary data on the frequency and distribution of Hungarian bryophytes, based on 'recent' (1974-2022) records(2023) Erzberger, Peter; Csiky, János; Baráth, Kornél; Beránek, Ábel; Deme, Judit; Fintha, Gabriella; Jakab, Gusztáv; Matus, Gábor; Mesterházy, Attila; Nagy, József; Nagy, Zoltán; Németh, Csaba; Pócs, Tamás; Schmidt, Dávid; Schmotzer, András; Szűcs, Péter; Wolf, Mátyás; Papp, BeátaTétel Szabadon hozzáférhető Sphaerocarpos michelii, egy új májmoha faj Magyarországon(2023-02-07) Wolf, Mátyás; Németh, Csaba; Erzberger, PeterUntil now, the genus Sphaerocarpos , which can be recognized at first glance due to its characteristic appearance, was represented in Hungary by S. europaeus only, for which a single old record exists. In January 2022 the other widely distributed European congener, S. michelii Bellardi, was discovered on an arable field of lucerne in Somogy county. We report the habitat characteristics of the single known population of S. michelii in Hungary, describe the morphology of the species and deal with the differentiation of the two Sphaerocarpos species. In order to facilitate species identification, we include light and electron micrographs showing essential details of the spore surface of S. michelii.Tétel Szabadon hozzáférhető Új montán mohafaj a Mátrából: Hymenoloma crispulum(2023-02-07) Németh, Csaba; Erzberger, PeterDue to the geomorphological situation and climatic conditions of Hungary, true montane climate is restricted to very few and small areas of higher elevation, with the highest peak (Mt Kékes, 1014 m) in the Mátra Mountains (North Central Hungary). During a bryofloristical survey in this region, a few cushions of a Boreo-arctic montane bryophyte species, Hymenoloma crispulum (Hedw.) Ochyra (syn.: Dicranoweisia crispula (Hedw.) Milde), was discovered at the steep northern slope of Mt. Kékes in an andesite boulder scree with cool and humid microclimate. H. crispulum is new to the Hungarian bryoflora and fits in well with other co-occurring vascular and cryptogamic taxa of northern-montane affinities. The population is very small and vulnerable, therefore it should be rated 'critically endangered' (CR) in an updated national red list.Tétel Szabadon hozzáférhető Vulpia bromoides és Luzula multiflora a Drávamenti-síkon(2022-10-03) Csiky, János; Erzberger, Peter; Deme, JuditVital populations of Vulpia bromoides (L.) S. F. Gray and Luzula multiflora Kirsch. were found between Vajszló and Páprád villages (S Hungary) in 25 May 2022. The populations grew in a mesic forest clearing in the territory of “Bükkhát forest”. These species are new for the flora of the Drava Plain. The habitat is demonstrated by a phytosociological relevé.