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001-es BibID:	BIBFORM103369
035-os BibID:	(Wos)000457403000019 (Scopus)85060240373
Első szerző:	Belovics-Görgényi Judit (Hidrobiológus)
Cím:	Contribution of phytoplankton functional groups to the diversity of a eutrophic oxbow lake / Görgényi Judit, Tóthmérész Béla, Várbíró Gábor, Abonyi András, T-Krasznai Enikő, B-Béres Viktoria, Borics Gábor
Dátum:	2019
ISSN:	0018-8158 1573-5117
Megjegyzések:	The functional group (FG) concept suggests that species having different phylogenetic origins but possessing similar functional characteristics can be considered as functional groups and these co-occur in the phytoplankton. Here, we study how functional redundancy of phytoplankton taxa (within group richness) contribute to the species diversity of assemblages in an oxbow lake in the Carpathian Basin. We found that although the observed functional redundancy was similar among several FGs, the shape of the species accumulation curves of these groups was considerably different, implying that the observed species numbers alone do not represent the real functional redundancy of the groups. We demonstrated that FGs that showed asymptotes in species richness estimates in small spatial scale, exhibited steady increase in large spatial, and temporal scales. The contribution of FGs to species richness depended strongly on the relative biomass of each FG. Species accumulation curves of those groups of which elements dominated in the phytoplankton, appeared to be approaching asymptotes. Since the shapes of species accumulation curves refer to the strengths of within-group competition among constituent species, our results imply that functional redundancy of phytoplankton is influenced by the role that the elements play within the assemblages.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk chao`s extrapolation curves functional redundancy species richness
Megjelenés:	Hydrobiologia. - 830 : 1 (2019), p. 287-301. -
További szerzők:	Tóthmérész Béla (1960-) (ökológus) Várbíró Gábor (biológus) Abonyi András (1984-) Krasznai Enikő (biológus) B-Béres Viktória (1981-) (biológus) Borics Gábor (biológus)
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001-es BibID:	BIBFORM078534
035-os BibID:	(WoS)000444146300017 (Scopus)85050614207
Első szerző:	Lukács Áron (hidrobiológus)
Cím:	Colonisation processes in benthic algal communities are well reflected by functional groups / Áron Lukács, Zsuzsanna Kókai, Péter Török, István Bácsi, Gábor Borics, Gábor Várbíró, Enikő T-Krasznai, Béla Tóthmérész, Viktória B-Béres
Dátum:	2018
ISSN:	0018-8158 1573-5117
Megjegyzések:	Single-trait analyses are used to select the most appropriate species characteristics for an effective indication of changes in multiple stressors, but they are robust to detect fine-scale functional changes in biofilms. The combination of single traits may appropriately reflect ecological properties of changing benthic assemblages. We studied colonisation processes of benthic algal assemblages focusing on the changes in trait composition using life forms, type of attachments, cell size and mobility as single traits in a small lowland stream. We tested the descriptive power of single-trait groups (STGs) and also combined trait groups (CTGs). We assumed that STGs would be significantly affected by environmental factors, but compositional changes in biofilms would be described more easily by using CTGs rather than STGs. Our hypotheses were confirmed by the results. While some STGs correlated positively to environmental factors indicating disturbances, others correlated to environmental factors indicating the stable conditions. The fast settlement of large-sized groups was also relevant determining the compositional changes in the studied benthic community. Despite the strong correlation between STGs and environmental variables, CTGs analyses revealed important functional relations in the ecosystem, since CTGs display more sophisticated functional features of the organisms, which may provide more realistic responses.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk combined trait groups single traits benthic algal communities functional processes colonisation watercourses
Megjelenés:	Hydrobiologia. - 823 : 1 (2018), p. 231-245. -
További szerzők:	Kókai Zsuzsanna (1989-) (hidrobiológus) Török Péter (1979-) (biológus-ökológus) Bácsi István (1977-) (biológus) Borics Gábor (biológus) Várbíró Gábor (biológus) Krasznai Enikő (biológus) Tóthmérész Béla (1960-) (ökológus) B-Béres Viktória (1981-) (biológus)
Pályázati támogatás:	GINOP-2.3.2-15-2016-00019 GINOP OTKA K 116639 OTKA NKFIH K 119 225 egyéb
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