Centric diatom algae of the Selenga River and its delta branches

2008 ◽  
Vol 1 (2) ◽  
pp. 120-128 ◽  
Author(s):  
S. I. Genkal ◽  
G. I. Popovskaya
Keyword(s):  
Centric Diatom ◽  
Diatom Algae ◽  
Selenga River ◽  
Delta Branches

Centric diatom algae (Centrophyceae) in waterbodies and water courses of the middle Irtysh basin

2012 ◽  
Vol 5 (1) ◽  
pp. 1-10 ◽  
Author(s):  
S. I. Genkal ◽  
O. P. Bazhenova ◽  
E. Yu. Mitrofanova
Keyword(s):  
Centric Diatom ◽  
Diatom Algae ◽  
Irtysh Basin ◽  
Water Courses

scholarly journals Centric diatom algae of Lake Imandra (Kola Peninsula, Russia)

Algologia ◽  
2018 ◽  
Vol 28 (1) ◽  
pp. 57-67
Author(s):  
D.B. Denisov ◽  
◽  
S.I. Genkal ◽  
Keyword(s):  
Kola Peninsula ◽  
Centric Diatom ◽  
Diatom Algae ◽  
Lake Imandra

Space and time variations in concentrations of biogenic and organic matter and phytoplankton in the water of the Selenga River and its delta branches

2009 ◽  
Vol 36 (4) ◽  
pp. 443-452 ◽  
Author(s):  
L. M. Sorokovikova ◽  
G. I. Popovskaya ◽  
I. V. Tomberg ◽  
N. V. Bashenkhaeva
Keyword(s):  
Organic Matter ◽  
Selenga River ◽  
Space And Time ◽  
Delta Branches ◽  
Time Variations

scholarly journals Morphology, taxonomy and distribution of the rare species Aulacoseira cataractarum (Hustedt) Simonsen (Bacillariophyta) in Russia

Algologia ◽  
2021 ◽  
Vol 31 (1) ◽  
pp. 3-8
Author(s):  
S.I. Genkal ◽  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Published Data ◽  
Centric Diatom ◽  
Diatom Algae ◽  
Microscope Images ◽  
Volcanic Caldera ◽  
Scanning Electron

This scanning electron microscopy study was undertaken to reanalyze frustule samples of the centric diatom algae Aulacoseira cataractarum, collected earlier from a swamp in the Uzon volcanic caldera (Kamchatka). This species, under the name of Melosira cataractarum, was reported before from a number of waterbodies in Russia. Later it was transferred to the genus Aulacoseira Thwaites – A. cataractarum (Hustedt) Simonsen (Simonsen, 1979), and then – to the genus Pseudostaurosira (A.Grunow) D.M.Williams & F.E.Round, under the name of P. seudostaurosira cataractarum (Hustedt) Wetzel, Morales et Ector. In this study we specify perforation of intercalary bands, the shape of the valves and spines as well as the number of valve face and mantle areolae per stria and their shape. Based on the original and published data an extended diagnosis of P. cataractarum is presented. Scanning electron microscope images of frustules of the centric diatom algae.

scholarly journals About a new representative of the genus Aulacoseira Thw. (Bacillariophyta) for the flora of Ukraine

Algologia ◽  
2021 ◽  
Vol 31 (2) ◽  
pp. 163-169
Author(s):  
S.I. Genkal ◽  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Morphological Characteristics ◽  
Diameter Ratio ◽  
Published Data ◽  
Centric Diatom ◽  
Diatom Algae ◽  
A New Species ◽  
Microscopy Images ◽  
Scanning Electron

In this study, scanning electron microscopy images of valves of the centric diatom algae Aulacoseira subborealis (Nygaard) Denys, Muylaert et Krammer from from the Kaniv Reservoir and the Desna River are analyzed. The quantitative (colony size, valve diameter and mantle height, the ratio of mantle height to valve diameter, number of areola rows and areolae in 10 µm on the mantle, ring-shaped diaphragm size) and qualitative (short pointed spines, areolae arrangement on the valve face and the mantle) morphological characteristics correspond to the diagnosis of A. pusilla (F.Meister) A.Tuji & A.Houki, a new species for the flora of Ukraine. In the analyzed material, minimum values of the mantle height and the height/diameter ratio are lower than in the published data.

Rare Species of Centric Diatom Algae (Bacillariophyta, Centrophyceae) from Ukraine

2019 ◽  
Vol 21 (1) ◽  
pp. 67-74
Author(s):  
O. P. Bilous ◽  
S. I. Genkal ◽  
R. Jahn ◽  
J. Zimmermann
Keyword(s):  
Rare Species ◽  
Centric Diatom ◽  
Diatom Algae

Peculiarities of composition and vertical distribution of centric diatoms in the Klyuchik Lake (Nizhny Novgorod Region)

2019 ◽  
pp. 55-59
Author(s):  
Alexander G. Okhapkin ◽  
Ekaterina L. Vodeneeva ◽  
Sergei I. Genkal ◽  
Pavel V. Kulizin ◽  
Kristina О. Skameykina
Keyword(s):  
Species Composition ◽  
Vertical Distribution ◽  
Centric Diatom ◽  
Diatom Algae ◽  
Hydrochemical Parameters ◽  
Centric Diatoms ◽  
Abundance Indices ◽  
The Vertical Distribution ◽  
Total Species ◽  
Nizhny Novgorod Region

The composition and development of phytoplankton of highly mineralized Lake Klyuchik (Nizhny Novgorod Region) were considered. The lake is unique of having a distinct ecotone on hydrochemical parameters. The prevalence of diatom algae, which are dominant in the number of species (46% of the total species composition) and abundance indices, was revealed. The vertical distribution of algae development was the most heterogeneous in the ecotone zone. In the bottom layers of the ecotone there was a mass development of the centric diatom Cyclotella distinguenda Hustedt with uniquely high abundance (several ten million cells/l) and biomass (more than 130 g/m3).

Diatom algae in phytoplankton of the Selenga River (Buryatiya, Russia)

2002 ◽  
Vol 4 (4) ◽  
pp. 88-97
Author(s):  
V. M. Khromov ◽  
R. M. Baldanova ◽  
A. G. Nedosekin ◽  
A. G. Rusanov
Keyword(s):  
Diatom Algae ◽  
Selenga River
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