Kitaibelia (DE-journals)

Állandó link (URI) ehhez a gyűjteményhez

https://hdl.handle.net/2437/291325
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Böngészés

Kitaibelia (DE-journals) Szerző szerinti böngészés "B-Béres, Viktória"

Megjelenítve 1 - 3 (Összesen 3)
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    TételSzabadon hozzáférhető
    A 2015-ös év algája szavazás jelöltjei
    (2016-01-01) B-Béres, Viktória; Nagy-László, Zsolt; T-Krasznai, Enikő; Stenger-Kovács, Csilla; Barreto, Sára; Kiss, Gábor; Buczkó, Krisztina; Abonyi, András
    While science-based education is widespread for macroscopic flora and fauna, the microscopic world has received much less attention. In 2015, having the aim of establishing a tradition, the Phycological Forum announced its first “Alga of the Year” in form of an online voting. The three candidates of algae were  Didymosphenia geminata ,  Haematococcus pluvialis  and  Prymnesium parvum , from which the  Haematococcus pluvialis  received the overwhelming majority of votes. Introducing the ecological and economical aspects and distribution of the candidate taxa in Hungary, we aimed at to stress that there is a high educational potential of microscopic life. Furthermore, our study draws the attention to the fundamental role of algae in aquatic ecosystems, stressing their importance in maintaining life.
  • Nincs kép
    TételSzabadon hozzáférhető
    Adatok kilenc adventív, vagy invazív alga hazai előfordulásához
    (2024-04-10) T-Krasznai, Enikő; B-Béres, Viktória; Kókai, Zsuzsanna; Buczkó, Krisztina; Balogh, Csaba; Török, Péter
    Hungarian records of nine adventive or invasive algae [Didymosphenia geminata, Nitzschia closterium, Reimeria sinuata, Navicula schroeteri, Pleurosira laevis (Bacillariophyceae); Pediastrum simplex (Chlorophyceae), Cylindrospermopsis raciborskii, Cuspidothrix issatschenkoi, Sphaerospermopsis aphanizomenoides (Cyanobacteria)] are presented. Navicula schroeteri Meister is a new species for the Hungarian flora. Although the observed distribution patterns of these species were very different, the increasing frequency of their appearance indicates significant effect of climate change on abiotic environment of inland waters, such as the increase in water temperature, increase in salt concentration, and eutrophication. The significance of continuous biomonitoring is emphasized, which, through the recognition of natural and human-induced changes in species composition of algae, or the appearance and rapid expansion of non-indigenous species, can detect environmental changes of inland waters.
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    Kisléptékű habitat-variabilitás közösségformáló szerepe kiszáradó kisvízfolyásokban – bentikus kovaalgák célkeresztben
    (2022-10-03) Kiss, Stefánia; Nemes-Kókai, Zsuzsanna; Lukács, Áron; Török-Krasznai, Enikő; B-Béres, Viktória
    Today, climate change, together with other anthropogenic influences is considered as a major threat affecting aquatic ecosystems in several ways. Here, altering water contraction (standing and flowing phases) and human-induced habitat variability (natural and artificial stream sections) were studied as modifying factors driving community changes in benthic diatom assemblages of a Hungarian small lowland stream (Létai-ér). We assumed notable compositional differences between phases and habitats, but we expected these differences to decrease with drying. Moreover, lower diversity was hypothesized in assemblages of both artificial section and flowing phase. While taxonomic composition did not reveal significant differences between the sections, well pronounced compositional changes were found between phases. Surprisingly, no significant diversity changes were observed during water contraction. Compared to the natural microhabitat, however, artificial stream section was found to maintain more diverse diatom community. These results emphasize that modification effects of climate change induced hydrological extremes can lead to remarkable compositional changes in benthic algal assemblages even on a short time scale, that must be taken into account in both water management and nature conservation strategies.