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Tétel Szabadon hozzáférhető Apró közlemények(2015-01-01) Szűcs, Péter; Pénzesné Kónya, Erika; Takács, Attila; Löki, Viktor; Csábi, Miklós; Csirmaz, Kálmán; Gregorits, János; Haszonits, Győző; Hernádi, László; Kiticsics, Anikó; Lukács, Róbert; Makádi, Sándor; Marton, József; Molnár V., Attila; Nagy, Timea; Pánczél, Mátyás; Raksányi, Zsolt; Reszler, Gábor; Tóth, Katalin; Babai, Dániel; Kelemen, András; Deák, Balázs; Albert, Ágnes; Valkó, Orsolya; Csathó, András István1. Occurrence of Lycopodium clavatum L. in 'Egri-Bükkalja' microregion (NE Hungary) 2. Contribution to the urban flora of Debrecen (E Hungary) 3. Contributions to the distribution data published in the Atlas of Hungarian Orchids 4. New occurrence of Sisyrinchium bermudiana L. in the Carpathian Basin (Transylvania, Romania) 5. Occurrence of Myagrum perfoliatum L. near Mezőberény town (East Hungary)Tétel Szabadon hozzáférhető Apró közlemények(2017-07-01) Nagy, József; Kulcsár, László; Matus, Gábor; Balogh, Rebeka; Demeter, László; Molnár, Csaba; Nagy, Timea; Lovas-Kiss, Ádám; Löki, Viktor; Molnár V., Attila1. Cephalanthera damasonium (Mill.) Druce in the Buda Arboretum 2. Opuntia phaeacantha Engelm. in the West-Transdanubia (W Hungary) 3. Yucca filamentosa L. in the South-Nyírség (E Hungary) 4. New occurrences of Chamaecytisus rochelii (Wierzb.) Rothm. on the Hungarian Great Plain and corrections on its previous occurrence data 5. Hybrid birch ( Betula × rhombifolia Tausch.) in the central part of Mátra Mountains 6. A csipkés gyöngyvessző ( Spiraea crenata L.) újabb temetői előfordulása / A new occurrence of Spiraea crenata L. in a Hungarian graveyardTétel Szabadon hozzáférhető Apró közlemények(2024-04-10) Molnár, Csaba; Virók, Viktor; Nagy, Nikoletta; Exner, Tamás; Nagy, Timea; Takács, Attila; Riezing, Norbert; Juhász-Gőz, Szilvia; Molnár V., AttilaNot available in English.Tétel Szabadon hozzáférhető A Debreceni Egyetem Herbáriuma (DE) I .: A „Soó Rezső Herbárium”(2024-04-10) Takács, Attila; Nagy, Timea; Fekete, Réka; Lovas-Kiss, Ádám; Ljubka, Tibor; Löki, Viktor; Lisztes-Szabó, Zsuzsa; Molnár V., AttilaThe paper introduces the herbarium of Debrecen University (DE). All specimens of the herbarium were documented by digital photographs, and all data from the labels were entered into an Excel spreadsheet. The largest collection of Herbarium DE, the “Soó Rezső Herbarium” (abbreviation: SRH) consists of ca. 38.000 specimens from almost all European countries, but mainly from Hungary and the neighbouring countries. Most of the specimens originate from Hajdú-Bihar, Pest, Győr-Moson-Sopron, Borsod-Abaúj-Zemplén, Veszprém and Szabolcs-Szatmár-Bereg counties. The SRH stores a considerable amount of original/authentic specimens collected by Hungarian botanists, primarily by Rezső Soó and his followers, as well as Sándor Polgár. The most rapid growth of the SRH took place in the first half of the last century (1930–1950). By contrast, the collection was practically not developed between 1955 and 2000. After the millennium it started to grow again. Data on the most substantial part of the SRH covering native plants collected in the present-day Hungary are summarized in Electronic Appendix 1. (incl. taxon name, settlement, collecting date, collector, file name of documentary photograph).Tétel Szabadon hozzáférhető Delayed feedback induced multirhythmicity in the oscillatory electrodissolution of copper(2015) Nagy, Timea; Verner, Erika; Gáspár, Vilmos; Kori, Hiroshi; Kiss, István ZalánTétel Szabadon hozzáférhető Dinamikai instabilitások elektrokémiai rendszerekben(2015) Nagy, Timea; Gáspár, Vilmos; Kémiai tudományok doktori iskola; DE--Természettudományi és Technológiai Kar -- Fizikai Kémia TanszékAz elektrokémiai cellák széles körben alkalmazott és intenzíven tanulmányozott példái az egyensúlytól távoli dinamikai rendszereknek. Célunk a réz-ortofoszforsav elektrokémiai rendszer dinamikai instabilitása következményeként kialakuló nemlineáris dinamikai jelenségek, és ezek általánosítható törvényszerűségeinek megismerése és tanulmányozása volt. Kidolgoztuk a multiritmicitás modellszintű elméletét, majd a réz elektrokémai oldódása során megfigyelhető bi- és triritmicitás részletes kísérleti vizsgálatával igazoltuk az elmélet alapján megjósolt összefüggéseket. A forgókorong elektródos kísérleteinkben arra kerestük a választ, hogy milyen hatással van az elektród forgási sebessége az áramoszcilláció periódusidejére és hullámalakjára. Célunk volt olyan kontrolleljárások kidolgozása is, amelyekkel a vizsgált rendszert a kiválasztott nullklínához tudjuk terelni, és azon tudjuk tartani. Ilyen módon lehetővé válna, hogy a nullklínák segítségével egy rendszer dinamikáját anélkül tudnánk rekonstruálni, hogy ismernénk az azt meghatározó és leíró, általában sokváltozós differenciálegyenlet-rendszert. A három témakörben megismert és komplex módon, kísérletesen és modellszámításokkal egyaránt vizsgált, részben új nemlineáris jelenségek, valamint az értelmezésük újszerűsége is hasznos és jól megalapozott kiindulópontot jelenthetnek az elektrokémiai rendszereken túli, különösen az élő szervezettel összefüggő határtudományi területeken, például az idegimpulzusok terjedésének vagy az izommozgások működésének megértését célzó kutatásokban.Tétel Szabadon hozzáférhető Distribution, infection rates and DNA barcoding of Uromyces erythronii (Pucciniaceae), a parasite of Erythronium (Liliaceae) in Europe(2019) Nagy, Timea; Pfliegler, Valter Péter; Takács, Attila; Tökölyi, Jácint; Molnár, V. AttilaTétel Szabadon hozzáférhető Az ELTE Füvészkert herbáriuma (BPU)(2017-01-01) Nótári, Krisztina; Nagy, Timea; Löki, Viktor; Ljubka, Tibor; Molnár V., Attila; Takács, AttilaThe paper introduces the herbarium of Eötvös Loránd University (BPU), currently stored at the Botanical Garden of the University, according to its state in the year 2013. The BPU herbarium consists of ca. 16 000 specimens the relevant data of which have been organised into an OpenOffice Calc spreadsheet database. The specimens were collected in 16 European countries, mainly in the current territory of Hungary (80%), Romania (12%) and Slovakia (5%). Other countries are represented with very few specimens. The vast majority (ca. 70%) of the Hungarian specimens were collected in Pest, Veszprém, Borsod-Abaúj-Zemplén, Hajdú-Bihar and Szabolcs-Szatmár-Bereg counties. Although the gatherings cover a century and a half period of time, the most rapid growth of the collection took place from the 1930s to the 1960s. The most prolific collectors were Rezső Soó and his followers: Lajos Felföldy, Tibor Simon and Szaniszló Priszter. Felföldy and Simon enriched the collection through more than 60 years. Data on the native plants collected in the present-day Hungary are summarized in Electronic Appendix 1. (incl. taxon name, settlement, collecting year, collector, file name of documentary photograph).Tétel Szabadon hozzáférhető Az év vadvirága 2014-ben: a szibériai nőszirom (Iris sibirica L.)(2015-07-01) Takács, Attila; Nagy, Timea; Salamon-Albert, Éva; Molnár V., AttilaIn this paper a review of the nomenclature, etymology, taxonomy, morphology, histology, life cycle, phenology, reproduction, habitat preference, biotic interactions, biologically active compounds, micropropagation, application possibilities and conservation status of Siberian flag ( Iris sibirica L.) can be found. Leaf traits, phenological data, seed-set, thousand-seed weight, germination, growth rate and soil characteristic data are published based on original observations: Leaf area is between 25,3 and 52,9 cm 2 , its dry mass is 232 and 272 mg/g, specific leaf area is 14,5 and 15,0 m 2 /kg; based on measurement of 5–5 leaves of sibirica , collected from Tapolca and Létavértes (Hungary) in May of 2014. Based on herbarium dataset, blooming of sibirica begins at the end of April and lasts to early-July, contrary to the literature data (May–June). Capsules contain (0–)58–76(–121) fertile seeds. (20–)60–80(–90)% of ovules develops to (seemingly) viable seeds, meanwhile the other ovules remain as aborted ones or develop to infertile seeds (probably because of absence of resources); based on fruits collected from Regéc (Hungary) in 2014 and 2015. Thousand-seed weight of sibirica is 8,8298–11,2914 g (based on 3×100–100 seeds collected from Regéc and Tapolca in 2014 and 2015), which is lower value than the literature data. In our germination test (50–50 seeds sowed to wet soil, after different treatments) 14% of scarified seeds, 6% of scalded seeds, 4–4% of imbibed and control seeds, 0–0% of cooled and refrigerated seeds are germinated. Scarified seeds germinated in the 8–26 th days, imbibed seeds 15–19 th days, control seeds 16–20 th days, scalded seeds 20–23 th days after sowing. It seems that scarification stimulates, meanwhile temperature-treatments inhibit the germination. Until 18 weeks the seedlings grow to 30 cm (in mean) and develop 5–7 leaves (in mean). After the 14 th week, the first and littlemost lateral leaves are necrosed. Analyses of soil samples collected from 17 locations of sibirica in Hungary, suggest that the species prefers highly acidic to slightly alcalic, lime-free to highly calcareous soils with generally high amount of humus and clay, different amount of phosphorus, potassium and nitrogen and low concentration of salt.Tétel Szabadon hozzáférhető Florisztikai adatok a Tiszántúl északi pereméről II.(2020-08-16) Süveges, Kristóf; Takács, Attila; Nagy, Timea; Schmotzer, András; Koscsó, JánosIn this paper we provide new floristic data for 126 species and one hybrid from the Borsod Plain and the Sajó–Hernád Interfluve (Borsod-Abaúj-Zemplén county, Northeast Hungary) observed between 2006 and 2019. A significant proportion of the data is related to gravel mining activities in the area. We present new localities for rare or sporadic native taxa in Hungary (e.g. Chenopodium murale , Ch. rubrum , Lycopsis arvensis , Chamaenerion dodonaei , Reseda luteola , Senecio viscosus , Gnaphalium luteoalbum , Cyperus glomeratus ) as well as rare or sporadic adventive weeds (e.g. Lepidium densiflorum , L. virginicum ). We publish additions to the distribution of several legally protected species (e.g. Pseudolysimachion longifolium , Nymphoides peltata , Epipactis tallosii , Leucanthemella serotina ). Presence of some taxa is remarkable regarding to the flora of the whole area of Crisicum ( Sherardia arvensis , Thymelaea passerina , Silene conica ) or the Great Hungarian Plain ( Monotropa hypopitys ).Tétel Szabadon hozzáférhető Florisztikai adatok a Tiszántúl északi pereméről II.(2020) Süveges, Kristóf; Takács, Attila; Nagy, Timea; Schmotzer, András; Koscsó, JánosTétel Szabadon hozzáférhető Kiegészítések a Magyarország orchideáinak atlasza elterjedési adataihoz(2015) Csábi, Miklós; Csirmaz, Kálmán; Gregorits, János; Haszonits, Győző; Hernádi, László; Kiticsics, Anikó; Lukács, Róbert; Makádi, Sándor; Marton, József; Molnár, V. Attila; Nagy, Timea; Pánczél, Mátyás; Raksányi, Zsolt; Reszler, Gábor; Takács, AttilaTétel Szabadon hozzáférhető Néhány florisztikai adat Kötcse környékéről (Dél-Dunántúl, Nyugat-Külső-Somogy)(2015-01-01) Nagy, TimeaThere are very few published and documented floristic data from the hills of the SW region of Hungary called 'Outer Somogy'. This paper present the occurrence data of 31 vascular plant species from the western part of this region. Among them 14 taxa are legally protected and further 17 taxa are sporadically occurring. The records were collected within the administrative area of villages Karád, Kereki, Kötcse, Nagycsepely, Szólád (Nezde) and Teleki. Most data were recorded in 2014. This is the first report on the occurrence of 1) Neotinea ustulata subsp. aestivalis in South Transdanubia, and 2) Epipactis microphylla and E. tallosii in Outer Somogy. Data provided on the occurrence of Cirsium boujartii on the northwestern border of the distribution area of this insufficiently known species.Tétel Szabadon hozzáférhető Néhány florisztikai adat Kötcse környékéről II. (Dél-Dunántúl, Nyugat-Külső-Somogy)(2017-01-01) Nagy, TimeaFloristic data of 73 species from NE part of West Outer Somogy are provided in the paper. Most of them were collected in 2016. The paper contains distribution data of species, which have not been detected in Outer Somogy so far (e.g. Peucedanum arenarium ), and new occurrences of rare or sporadic taxa (e.g. Menyanthes trifoliata , Veronica scardica ), as well as subspontaneous occurrences of cultivated species (e.g. Narcissus poëticus , Helleborus purpurascens ) are provided.Tétel Szabadon hozzáférhető Pótlások a Magyarország edényes növényfajainak elterjedési atlaszához I.(2016-01-01) Takács, Attila; Nagy, Timea; Sramkó, Gábor; Lovas-Kiss, Ádám; Süveges, Kristóf; Lukács, Balázs András; Fekete, Réka; Löki, Viktor; Malatinszky, Ákos; E. Vojtkó, Anna; Koscsó, János; Pfliegler, Walter Péter; Nótári, Krisztina; Molnár V., AttilaThe main aim of the present work is to contribute with new data to the distribution maps published recently in Atlas Florae Hungariae . Occurrence data of 297 vascular plant taxa from 247 flora mapping quarter quadrates (CEU) are presented. This floristic paper is somehow unusual because besides the occurrence data of rare or sporadic taxa (e.g. Armoracia macrocarpa (Waldst. et Kit.) Kit. ex Baumg., Samolus valerandi L., Epipactis voethii Robatsch), frequent, but more or less underrepresented taxa (e.g. Ranunculus ficaria L., Viola kitaibeliana Roem. et Schult., Gagea villosa (M. Bieb.) Duby), as well as alien taxa (e.g. Cymbalaria muralis G. Gaertn., B. Mey. et Scherb., Potentilla indica (Andrews) Focke, Tragus racemosus (L.) All.) are also enumerated, since our intention was to fill the – sometimes evident – gaps in the Atlas . The name initials of the author(s) who actually found the given occurrence are presented in brackets at each record.Tétel Szabadon hozzáférhető Pótlások Magyarország edényes növényfajainak elterjedési atlaszához II.(2016) Molnár, Csaba; Lengyel, Attila; Molnár, V. Attila; Nagy, Timea; Csábi, Miklós; Süveges, Kristóf; Lengyel,-Vaskor Dóra; Tóth, György; Takács, AttilaTétel Szabadon hozzáférhető Pótlások Magyarország edényes növényfajainak elterjedési atlaszához II.(2016-07-01) Molnár, Csaba; Lengyel, Attila; Molnár V., Attila; Nagy, Timea; Csábi, Miklós; Süveges, Kristóf; Lengyel-Vaskor, Dóra; Tóth, György; Takács, AttilaThe present article is the second part of the series aiming to contribute with new data to the distribution maps published recently in Atlas Florae Hungariae . Current occurrence data of 612 vascular plant taxa from 283 flora mapping quadrates (CEU) are presented. New records are distributed over the entire Hungary, however, most are localised in the North Hungarian Mts. Occurrence data of rare native taxa (e.g. Antennaria dioica , Bupleurum pachnospermum , Carex rostrata , Ceratocephala testiculata , Cicuta virosa , Cirsium boujartii , Epipactis moravica , Lycopsis arvensis , Parnassia palustris , Pyrus nivalis , Rumex kerneri , Rumex pulcher , Silene nemoralis , Stellaria alsine , Teucrium botrys , Vicia lutea ), rare or data-deficient alien taxa (e.g. Nonea lutea , Panicum dichotomiflorum , Silybum marianum ) as well as frequent but more or less underrepresented taxa (e.g. Eragrostis minor , Heliotropium europaeum , Saxifraga tridactylites ) are also enumerated, since our intention was to fill the gaps in the Atlas. Remarcable contribution on the occupied territory of Ranunculus illyricus and Spergula pentandra in the Nyírség region (E Hungary), and on the Hungarian distribution of expanding alien weed Senecio vernalis are also presented.Tétel Szabadon hozzáférhető Pótlások Magyarország edényes növényfajainak elterjedési atlaszához III.(2017-01-01) Molnár, Csaba; Haszonits, Győző; Malatinszky, Ákos; Kovács, Gergely Károly; Kovács, Gábor; Nagy, Timea; Molnár V., Attila; Takács, AttilaThe current paper is the third one in the series aiming to contribute with new distribution data to the distribution maps published recently in Atlas Florae Hungariae . Current occurrence data of 558 vascular plant taxa from 186 flora mapping quadrates (CEU) are presented. New records are indicated from different regions of Hungary; however, most occurrences are located in the North Hungarian Mts. Occurrence data of rare native taxa (e.g. Marsilea quadrifolia , Salicornia prostrata , Stellaria palustris , Potentilla patula , Althaea cannabina , Lythrum tribracteatum , Ajuga laxmannii , Plantago schwarzenbergiana , Alisma gramineum , Gagea bohemica , G. szovitsii ), rare or data-deficient alien taxa (e.g. Chorispora tenella , Thladiantha dubia , Senecio vernalis ) as well as frequent but more or less underrepresented taxa (e.g. Scleranthus annuus , Vicia hirsuta , V. lathyroides ) are also enumerated. In case of the most common species we provided the CEU codes only.Tétel Szabadon hozzáférhető Pótlások Magyarország edényes növényfajainak elterjedési atlaszához VI.(2018) Molnár, Csaba; Haszonits, Győző; Malatinszky, Ákos; Süveges, Kristóf; Balogh, Lajos; Nagy, Timea; Horváth, Soma; Hudák, KatalinTétel Szabadon hozzáférhető Pótlások Magyarország edényes növényfajainak elterjedési atlaszához VI.(2018-01-01) Molnár, Csaba; Haszonits, Győző; Malatinszky, Ákos; Süveges, Kristóf; Balogh, Lajos; Nagy, Timea; Horváth, Soma; Hudák, KatalinThe current paper is the sixth one in the series aiming to contribute with new distribution data to the distribution maps published recently in Atlas Florae Hungariae. Current occurrence data of 389 vascular plant taxa from 117 flora mapping quadrates (CEU) are provided. New records are indicated from different regions of Hungary; however, most occurrences are located in the North Hungarian Mts and from the city of Szolnok and Western Hungary. Occurrence data of rare native taxa (including data of Equisetum fluviatile, Galium rivale, Gladiolus imbricatus, Hypericum maculatum, Persicaria bistorta, Potentilla inclinata, Ranunculus lingua, Rhinanthus rumelicus, Trifolium fragiferum subsp. bonannii, Viola pumila ), rare or data-deficient alien taxa (e.g. Amaranthus blitum subsp. blitum, Cymbalaria muralis, Elymus elongatus, Euphorbia peplus, Heracleum sosnowskyi, Impatiens balfourii, Lepidium densiflorum, Rhus typhina, Telekia speciosa ), as well as frequent but more or less underrepresented taxa (e.g. Carex otrubae, Chenopodium polyspermum, Crepis tectorum, Filipendula vulgaris, Petrorhagia prolifera, Poa palustris ) are also enumerated. In case of the most common species we provided the CEU codes only.