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- W146827155 abstract "Feltartuk a bakterialis meretű algakban (pikoplankton) gazdag turbid vizekben a pikoplankton tomegenek, osszetetelenek, dinamikajanak es fotoszintezisenek alapvető jellemzőit. A fitoplankton tomege alapjan ezek a tavak hipertrofok (a-klorofill>100 micro g/l), ugyanakkor a fenylimitacio miatt elsődleges termelesuk a vartnal alacsonyabb volt. Vizukben a pikoplankton abundanciaja egy-ket nagysagrenddel nagyobb volt, mint mas tavakban, telen a pikoeukariotak nyaron a pikocianobakteriumok dominaltak a Balatonhoz hasonloan. A Balatonban a pikoalgak reszesedese az osszes produkciobol 23-54% kozott volt. Megallapitottuk, hogy a pikoplankton abundancia folyo vizekben egy nagysagrenddel kisebb, mint tavakban, azonos fitoplankton biomassza eseten. A Balatonbol egy uj pikoeukariota, a szikes tavakbol egy uj pikocianobakterium morfotaxont irtunk le. A termeszetes pikoplankton egyuttesek molekularis vizsgalata bizonyitotta, hogy a Pannon Biogeografiai Regio viztereinek Synechococcus floraja igen gazdag es diverz. Az izolalt pikocianobakterium torzsek genetikai karakterizalasa is ezt az eredmenyt tamasztotta ala. A Boddi-szekből izolalt torzsek a pikofitoplankton klad egy uj, eddig tenyesztesbe nem vont csoportjat kepviselik. Pikoeukariota es pikocianobakterium torzsek okofiziologiai vizsgalataval bizonyitottuk, hogy a Duna-Tisza kozi szikes tavakban (es minden bizonnyal mas tavakban is) a feny es a hőmerseklet valtozasa egyutt szabalyozza a pikoalgak szezonalis szukcessziojat. | The abundance, composition, dynamics and photosynthesis of the bacterium-sized algae (picoplankton) has been studied in Hungarian turbid waters, where the abundance of picoplankton is one or two order of magnitude higher than in other lakes. Based on the phytoplankton biomass these ponds were hypertrophic (chlorophyll-a > 100 micro g/l), however the primary production was lower than expected due to light limitation. Picoeukaryotes dominate in winter, while picocyanobacteria dominate in summer, similarly to Lake Balaton, where the proportion of the picoplankton in the total primary production was 23 and 54%. It has been stated, that the picoplankton abundance in running waters was one order of magnitude lower, than in shallow lakes having the same trophic state. One new eukaryotic and one cyanobacterial picoalgal morphotaxa has been described. The molecular characterization of phytoplankton assemblages showed that the Synechococcus flora of the Pannon Biogeographic Region is very diverse. The molecular identification of isolated picocyanobacterial strains also confirmed these results. The picocyanobacterial strains isolated from Boddi-szek pond formed a new, distinct group inside the picophytoplankton clade. The ecophysiological studies of picoeukaryotic and picocyanobacterial strains showed that the light and temperature control together the seasonal succession of the picoplankton in turbid soda lakes in the Danube-Tisza Interfluve (and presumably in other shallow lakes)." @default.
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- W146827155 date "2008-01-01" @default.
- W146827155 modified "2023-09-30" @default.
- W146827155 title "A fitoplankton produktivitása és diverzitása pikoplankton dominanciájú vízterekben = Productivity and diversity of phytoplankton in picoplankton dominated water bodies" @default.
- W146827155 hasPublicationYear "2008" @default.
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