We studied a new freshwater cymbelloid diatom taxon collected from Mongolia with light and scanning electron microscopy. The monotypic genus Vladinikolaevia gen. nov., based on V. mongolica sp. nov, is described. characterized by combination of morphological features found in two well-known genera such as Cymbella Encyonema. raphe system morphologically-similar to Encyonema but the presence api...

During the last decades, a decrease in nutrients and an increase marine temperature on surface of Varna Bay Black Sea have been registered. The main aim this study was to establish influence some environmental factors (SST, TP, DIN) structure phytoplankton define what part these dynamics results from changes temperature. Bivariate correlation Nonlinear regression analyses were used connection b...

The purpose of this study was to determine the index plankton diversity in Aek Rao River, Gunung Tua. research carried out from April May 2022 sampling method used purposive random which consisted 3 observation stations, namely station 1 upstream, 2 for residential areas and densely populated areas. results showed that composition Tua classes phytoplankton, Bacillariophyceae, Chlorophyceae Cyan...