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001-es BibID:	BIBFORM123654
035-os BibID:	(Scopus)85195972301 (WoS)001260828000133
Első szerző:	Lukács Áron (hidrobiológus)
Cím:	Physical structure of the environment contributes to the development of diversity of microalgal assemblages / Áron Lukács, Sándor Szabó, Enikő T?Krasznai, Judit Görgényi, István Tóth, Viktória B?Béres, Verona Lerf, Zsuzsanna Nemes?Kókai, Gábor Borics
Dátum:	2024
ISSN:	2045-2322
Megjegyzések:	Aquatic macrophytes form a three dimensional complex structure in the littoral zones of lakes, with many physical, chemical and biological gradients and interactions. This special habitat harbours a unique microalgal assemblage called metaphyton, that differs both from the phytoplankton of the pelagial and from the benthic assemblages whose elements are tightly attached to the substrates. Since metaphytic assemblages significantly contribute to the diversity of lakes' phytoplankton, it is crucial to understand and disentangle those mechanisms that ensure their development. Therefore, we focused on the question of how a single solid physical structure contribute to maintaining metaphytic assemblages. Using a laboratory experiment we studied the floristic and functional differences of microalgal assemblages in microcosms that simulated the conditions that an open water, a complex natural macrophyte stand (Utricularia vulgaris L.), or an artificial substrate (cotton wool) provide for them. We inoculated the systems with a species rich (> 326 species) microalgal assemblage collected from a eutrophic oxbow lake, and studied the diversity, trait and functional group composition of the assemblages in a 24 day long experimental period. We found that both natural and artificial substrates ensured higher species richness than the open water environment. Functional richness in the open water environment was lower than in the aquaria containing natural macrophyte stand but higher than in which cotton wool was placed. This means that the artificial physical structure enhanced functional redundancy of the resident functional groups. Elongation measures of microalgal assemblages showed the highest variation in the microcosms that simulated the open water environment. Our results suggest that assembly of metaphytic algal communities is not a random process, instead a deterministic one driven by the niche characteristics of the complex three dimensional structure created by the stands of aquatic macrophytes.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Biodiversity Ecosystem Lakes Microalgae Phytoplankton
Megjelenés:	Scientific Reports. - 14 : 1 (2024), p. 1-14. -
További szerzők:	Szabó Sándor (biológus) Krasznai Enikő (biológus) Belovics-Görgényi Judit (1988-) (Hidrobiológus) Tóth István B-Béres Viktória (1981-) (biológus) Lerf Verona Kókai Zsuzsanna (1989-) (hidrobiológus) Borics Gábor (biológus)
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