Seasonal succession of phytoplankton in a small oligotrophic oxbow and some consideration to the PEG model

Grigorszky, István; Nagy, S.; Krienitz, Lothar; Kiss, Keve Tihamér; Hamvas, Márta Mikóné; Tóth, Ádám; Borics, Gábor; Máthé, Csaba; Kiss, Béla; Borbély, György; Padisák, Judit

doi:10.1080/03680770.1998.11901216

Cited by 7 publications

(6 citation statements)

References 2 publications

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“…temperature, light, stratification (Reynolds, 1989), grazing (Sterner, 1989) and the strength of interspecific competition (Sommer, 1989) basically determine the pattern of phytoplankton succession. These altogether highly contribute to profound seasonal compositional changes of the phytoplankton even in very small lakes (Grigorszky et al, 2000). Species richness estimated by the time series samples is comparable to those reported for considerably larger lakes (Table 4).…”

Section: Discussionsupporting

confidence: 79%

Contribution of phytoplankton functional groups to the diversity of a eutrophic oxbow lake

Görgényi

Tóthmérész²,

Várbíró

et al. 2019

Hydrobiologia

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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 Handling editor: Judit Padisák ().,-volV) (0123456789().,-volV) accumulation curves refer to the strengths of withingroup competition among constituent species, our results imply that functional redundancy of phytoplankton is influenced by the role that the elements play within the assemblages.

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Section: Discussionsupporting

confidence: 79%

Contribution of phytoplankton functional groups to the diversity of a eutrophic oxbow lake

Görgényi

Tóthmérész²,

Várbíró

et al. 2019

Hydrobiologia

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“…All continents in the temperate region are characterised by the presence of shallow lakes associated with a high algal density at various times during the year (Borics et al 2013, 2014, Grigorszky et al 2000, Sommer et al 1986, Padisák et al 2003. Algal blooms have garnered major global interest during the last two decades (Hense 2010, Hense and Beckmann 2000, Hense and Burkhard 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Phytoplankton spring blooms in temperate waters have been generally dominated by one of two main groups: dinoflagellates or diatoms (Sommer et al 1986, Grigorszky et al 2000, Gligora et al 2015. Dinoflagellates and diatoms are key groups of the freshwater phytoplankton, and, as primary producers, are particularly relevant for biogeochemical cycles and the food web.…”

Section: Introductionmentioning

confidence: 99%

“…The reasons for the shift in dominance are not completely understood. The phenomenon of this "spring bloom type" is characteristic to Hungarian standing and running waters (Grigorszky et al 1993(Grigorszky et al , 1997(Grigorszky et al , 2000(Grigorszky et al , 2003, while another "type" (dominance of only centric diatoms) frequently occurred in the Danube River and its side-arms (Kiss andGenkal 1993, 1997).…”

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Temperature and growth strategies as the essential factors influencing the occurrence of Stephanodiscus minutulus (Kützing) Cleve & Möller and Palatinus apiculatus (Ehrenberg) Craveiro, Calado, Daugbjerg & Moestrup

Grigorszky¹,

Kiss²,

Pór³

et al. 2017

fal

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The life cycle of diatoms and dinoflagellates enables them to produce interannually varying dominances. This variability results from life-cycle interactions, physical conditions, and inter-species competition for nutrients and light. In particular, the overall dominant species of the year can be linked to the abundances of resting stages and temperature in spring. 2 The aim of this study was to investigate the effects of temperature and life cycle as biotic factors on spring phytoplankton blooms caused by Stephanodiscus minutulus (Kützing) Cleve & Möller and Palatinus apiculatus (Ehrenberg) Craveiro, Calado, Daugbjerg & Moestrup, in a Hungarian shallow backwater. The composition of plankton communities exhibited a marked interannual heterogeneity. Our results suggested that a slight decrease in temperature in spring favours a spring bloom of vegetative dinoflagellates before encystment begins. However, a rapid increase in temperature results in high abundances of dinoflagellate cysts, which, in turn, leads to the dominance of diatoms. In this case, encystment starts before a pronounced dinoflagellate spring bloom is established.

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“…Although cyanobacteria are the most frequent bloom-forming organisms in freshwaters (Chorus & Bartram, 1999), blooms of dinoflagellates are not rare either. They typically appear in bloom quantities in small lakes naturally rich in organic material (Grigorszky et al, 2000(Grigorszky et al, , 2003a, and they can interfere with water use in large lakes (Pollingher, 1986;Zohary et al, 1998;Flaim et al, 2003). Bloom-forming species often have a dormant (resting) stage in their life cycle.…”

Section: Introductionmentioning

confidence: 98%

The Effects of Temperature, Nitrogen, and Phosphorus on the Encystment of Peridinium cinctum, Stein (Dinophyta)

et al. 2006

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For avoiding the unfavorable environmental conditions several aquatic microorganisms are capable of forming specialized resistance cells like akinets, hypnospores, statospores, etc. Recognition of the important role of cysts in the life cycles of dinoflagellates increased the need to study their role in the ecology of phytoplanktons, and this, combined with the knowledge of chemical and biological characteristics of the water, may lead to a better understanding of the spatial and temporal dynamics of dinoflagellates. This paper reports on the effects of temperature, nitrogen, and phosphorus on the percentage of encystment of the dinoflagellate Peridinum cinctum Stein. The phosphorus content of the medium affected encystment only at the highest temperature applied (22°C). Nitrogen content and temperature were the most important factors controlling the encystment.

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Seasonal succession of phytoplankton in a small oligotrophic oxbow and some consideration to the PEG model

Cited by 7 publications

References 2 publications

Contribution of phytoplankton functional groups to the diversity of a eutrophic oxbow lake

Contribution of phytoplankton functional groups to the diversity of a eutrophic oxbow lake

Temperature and growth strategies as the essential factors influencing the occurrence of Stephanodiscus minutulus (Kützing) Cleve & Möller and Palatinus apiculatus (Ehrenberg) Craveiro, Calado, Daugbjerg & Moestrup

The Effects of Temperature, Nitrogen, and Phosphorus on the Encystment of Peridinium cinctum, Stein (Dinophyta)

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