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Pantocsekiella, a new centric diatom genus based on morphological and genetic studies
The new genus Pantocsekiella is described, which has distinctive morphological features: striae unequal in length, central area without areolae, and several Lindavia taxa are transferred into it.
Morphological and genetic variability of assemblages of Cyclotella ocellata Pantocsek/C. comensis Grunow complex (Bacillariophyta, Thalassiosirales)
Although general congruence of molecular and morphometric separation supports the species level separation of C. ocellata/trichonidea from the probably conspecific C. comensis/pseudocomensis/costei, sequence divergences between the groups are in the same range as within them, so that aconspecificity of all four taxa cannot be unequivocally excluded.
Diversity and seasonal dynamics of the photoautotrophic picoplankton in Lake Balaton (Hungary)
The results show that a single inte- grated pelagic sample, taken vertically from the whole water column, may harbor a large number of picocyanobacterial genotypes including previously unidentified groups, highlighting the fine internal structure and dynamics of the PPP community in freshwater ecosystems — a view usually blurred by the lower resolution of commonly used methods.
Biogeography and phylogenetic position of a warm-stenotherm centric diatom, Skeletonema potamos (C.I. Weber) hasle and its long-term dynamics in the River Danube.
Morphology, taxonomy and distribution of Stephanodiscus triporus (Bacillariophyceae) and related taxa
There is a continuum of variation between S. triporus and S. vestibulis (in diameter, the number and morphology of the striae, the position of the valve face fultoportula with three satellite pores, the presence of a vestibulum having more or less the same shape), and it is suggested that they are conspecific.
Trait-based community assembly of epiphytic diatoms in saline astatic ponds: a test of the stress-dominance hypothesis
The stress dominance hypothesis (SDH) postulates that strong environmental gradients drive trait convergence in communities over limiting similarity, and community assembly in diatom communities of astatic ponds is studied.
Effect of Land Use on the Benthic Diatom Community of the Danube River in the Region of Budapest
(1) Urbanization significantly influences the ecosystems of rivers in various ways, including the so-called loading effect of wastewater production. Benthic diatoms are used in ecological status…
Unexpected consequences of bombing. Community level response of epiphytic diatoms to environmental stress in a saline bomb crater pond area
The increasing abundance of Nitzschia reskoi was a signal of the degradation of the intermittent saline wetlands, and description of a new species, NitzSchia res Koi Ács, Duleba, C.Wetzel & Ector is proposed.
Lindavia intermedia (Bacillariophyceae) and Nuisance lake Snow in New Zealand: Chitin Content and Quantitative PCR Methods to Estimate Cell Concentrations and Expression of Chitin Synthase1
Lake snow production by L. intermedia requires an as yet undetermined stimulus independent of cell abundance, but that a full range of L.Intermedia abundance can occur when lake snow is absent, suggesting that chitin production is not obligate in L.intermedia.
Relative importance of climate and spatial processes in shaping species composition, functional structure and beta diversity of phytoplankton in a large river.