scholarly journals STAGES OF PEAT BOG DEVELOPMENT OF BOLSHOI SHANTAR ISLAND ACCORDING TO DIATOM DATA

2021 ◽  
Author(s):  
Т.А. Гребенникова ◽  
В.В. Чаков ◽  
М.А. Климин
Keyword(s):  
Late Pleistocene ◽  
Taxonomic Composition ◽  
Peat Bog ◽  
Diatom Flora ◽  
Blanket Peat

Приведены результаты изучения эколого-таксономического состава диатомовой флоры покровного торфяника северной части острова Большой Шантар с целью биоиндикации экологических условий, существовавших на болоте в зависимости от гидроклиматических изменений в конце позднего плейстоцена-голоцене. The results of the study of the ecological-taxonomic composition of the diatom flora of the blanket peat bog located in the northern part of Bolshoy Shantar Island are presented. The aim is bioindication of environments occurring in the bog, connected with hydroclimatic changes at the end of the Late Pleistocene-Holocene.

Climatic implications of latest Pleistocene and earliest Holocene mammalian sympatries in eastern Washington state, USA

2008 ◽  
Vol 70 (3) ◽  
pp. 426-432 ◽  
Author(s):  
R. Lee Lyman
Keyword(s):  
North America ◽  
Late Pleistocene ◽  
Rocky Mountains ◽  
Taxonomic Composition ◽  
Washington State ◽  
The West ◽  
Mammalian Faunas ◽  
Eastern Washington

AbstractFor more than fifty years it has been known that mammalian faunas of late-Pleistocene age are taxonomically unique and lack modern analogs. It has long been thought that nonanalog mammalian faunas are limited in North America to areas east of the Rocky Mountains and that late-Pleistocene mammalian faunas in the west were modern in taxonomic composition. A late-Pleistocene fauna from Marmes Rockshelter in southeastern Washington State has no modern analog and defines an area of maximum sympatry that indicates significantly cooler summers than are found in the area today. An earliest Holocene fauna from Marmes Rockshelter defines an area of maximum sympatry, including the site area, but contains a single tentatively identified taxon that may indicate slightly cooler than modern summers.

Characteristic of marine Oligocene diatom flora from the Cenozoic key section of West Kamchatka

2019 ◽  
pp. 205-209
Author(s):  
Andrey Yu. Gladenkov
Keyword(s):  
Taxonomic Composition ◽  
Diatom Assemblages ◽  
Diatom Flora ◽  
Early Oligocene ◽  
Kamchatka Region

The results on study of fossil diatom flora from marine Cenozoic key section of West Kamchatka at the Kvachina Bay are given. Based on distinctions in taxonomic composition and stratigraphic occurrence of biochronologically important taxa in the section, diatom assemblages of different age dated from the early Oligocene to earliest Miocene are identified. In their entirety and paleontological characteristics studied Oligocene assemblages are the most representative among all assemblages of this age known from Kamchatka region.

Stauroneis fuegiana, a new Stauroneis species (Bacillariophyta) from Tierra del Fuego, southern Argentina

Phytotaxa ◽  
2017 ◽  
Vol 311 (1) ◽  
pp. 85
Author(s):  
VALERIA CASA ◽  
GABRIELA MATALONI ◽  
BART VAN DE VIJVER
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Central Area ◽  
Taxonomic Position ◽  
Tierra Del Fuego ◽  
Peat Bog ◽  
New Taxon ◽  
Diatom Flora ◽  
Scanning Electron

During a survey of the freshwater aquatic diatom flora of two peat bog areas in Tierra del Fuego, southern Argentina, a new taxon belonging to the genus Stauroneis that could not be identified was observed. Based on detailed light and scanning electron microscopy observations and comparison with similar larger-celled Stauroneis species worldwide, the taxon is described as new: Stauroneis fuegiana Casa & Van de Vijver sp. nov. Stauroneis fuegiana can be distinguished based on the slightly raised marginal crest, the typical broadly lanceolate valve outline with subrostrate apices, the almost rectangular central area and its valve dimensions.Comments are made on its taxonomic position and how the new taxon can be distinguished from other larger-celled Stauroneis species. Brief notes on the ecology and distribution are added.

scholarly journals Diatoms from a peat bog on the Pester plateau (southwestern Serbia): New records for diatom flora of Serbia

2016 ◽  
Vol 68 (1) ◽  
pp. 107-116 ◽  
Author(s):  
Danijela Vidakovic ◽  
Jelena Krizmanic ◽  
Sanja Sovran ◽  
Mirko Cvijan
Keyword(s):  
New Records ◽  
Peat Bog ◽  
Ecological Data ◽  
Diatom Flora ◽  
Diatom Communities ◽  
Distribution And Ecology

The distribution of diatoms was studied in three types of diatom communities (epiphytes, benthos and plankton) of a peat bog on the Pester plateau. The observed diatom flora inhabited all investigated communities, comprising in total 250 taxa in 53 genera. Among them, 45 taxa were new records for the Serbian diatom flora. Identified taxa belonged to different groups of algae, however alkaliphile diatoms were dominant. New ecological data for Encyonopsis minuta, Pinnularia isostauron and P. marchica are presented here. All the diatoms were documented by light micrographs, and brief notes on their morphology, distribution and ecology are provided.

scholarly journals Preliminary paleoecological reconstruction of long-term relationship between human and environment in the northern part of Danube-along Plain, Hungary

2016 ◽  
Vol 8 (1) ◽  
Author(s):  
Rozália Kustár ◽  
Dávid Molnár ◽  
Pál Sümegi ◽  
Tünde Törőcsik ◽  
Szilvia Sávai
Keyword(s):  
Lake Sediment ◽  
Late Pleistocene ◽  
Transitional Zone ◽  
Morphological Characters ◽  
Danube River ◽  
Peat Bog ◽  
Aeolian Sand ◽  
Carbonate Sediment ◽  
Geological Processes

AbstractThe peat bog at Ócsa is located at the northern part of the Danube-Tisa Interfluves at the transitional zone of two landscapes with different morphological characters. At the boundary of the Danube-Tisa Interfluves and the Danube-along Plain a marshland sequence can be found from Hajós to Ócsa. We extended our research to the Ócsa peat bog to complete the environmental historical investigations in the examined area, as well.The bog is located in a former pool formed by the Danube River in which aeolian sand and thick lake sediment deposited from the Late Pleistocene. The initial oligotrophic lake became mesotrophic, therefore thick carbonate sediment deposited. Afterwards, as a consequence of the Neolithic human occupations, the natural development of the lake changed drastically and the lake choked up. The pollen and quartermalacological analysis of the area support the mentioned geological processes.

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