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 ◽  
2012 ◽  
Vol 5 (1) ◽  
pp. 1-10 ◽  
Author(s):  
S. I. Genkal ◽  
O. P. Bazhenova ◽  
E. Yu. Mitrofanova

2008 ◽  
Vol 1 (2) ◽  
pp. 120-128 ◽  
Author(s):  
S. I. Genkal ◽  
G. I. Popovskaya

Polar Record ◽  
2009 ◽  
Vol 46 (3) ◽  
pp. 222-232 ◽  
Author(s):  
Robert P. Wheelersburg ◽  
Natalia Gutsol

ABSTRACTSome Arctic scholars believe that modern reindeer herding on the Kola Peninsula has cultural continuity with the traditional period of such activity in the late 19th century. Others believe that by World War II, Soviet repression of Saami leaders, collectivisation of herding villages, and relocation of families had eliminated many traditional behaviours, especially in the Lake Imandra watershed. This study utilises informant interviews with survivors of the Babinski and Ekostrovski Saami reindeer herding villages and archival materials to understand how their families used land and water to fish, hunt, and obtain other resources including cash labour. As part of the United States National Science Foundation's human dimensions of the Arctic system (HARC) programme to examine how humans are both shaped by, and shape, the Arctic environment, the authors document how lands and waters formed traditional resource territories for Saami herding families. The results reveal that prior to their destruction, western Kola reindeer herding villages were integrated along family lines, with villages sharing mates, resource territories, and economic activities. This paper argues that there was, in fact, no cultural continuity between traditional Saami reindeer herding villages and modern herding structures such as the post-Soviet brigade on the western Kola Peninsula.


Algologia ◽  
2021 ◽  
Vol 31 (1) ◽  
pp. 3-8
Author(s):  
S.I. Genkal ◽  

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.


Algologia ◽  
2021 ◽  
Vol 31 (2) ◽  
pp. 163-169
Author(s):  
S.I. Genkal ◽  

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.


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

Author(s):  
Alexander G. Okhapkin ◽  
Ekaterina L. Vodeneeva ◽  
Sergei I. Genkal ◽  
Pavel V. Kulizin ◽  
Kristina О. Skameykina

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).


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