Results 181 to 190 of about 11,036 (222)

Early cretaceous gastropods of the Middle-Lower Volga river region from P.A. Gerasimov’s collection

Paleontological Journal, 2009
Based on the studying of gastropods collected by P.A. Gerasimov from the Cretaceous beds of the Volga region, four new species are established: Avellana hauteriviensis sp. nov. from the Upper Hauterivian of the Ulyanovsk region, “Palaeorissoina” sokolovensis sp. nov., O. sinzowi sp. nov., and Nerineopsis turritum sp. nov.
M. A. Golovinova, A. V. Guzhov
openaire   +2 more sources

The response of water flow, suspended sediment yield and erosion intensity to contemporary long-term changes in climate and land use/cover in river basins of the Middle Volga Region, European Russia

Science of The Total Environment, 2020
The Middle Volga Region is one of the most populated and agriculturally developed geographic regions of the East European Plain within European Russia, where noticeable changes in climate and land use/cover were observed since the 1980s and the early 1990s respectively.
A. Gusarov
openaire   +5 more sources

Influence of Municipal Wastewaters on the Zooplankton Communities of a Small River from the Industrial Zone of the Middle Volga Region Based on the Results of Long-Term Observations

Contemporary Problems of Ecology
T. A. Kondratieva, N. J. Stepanova, T. V. Nikonenkova, L. B. Nazarova   +3 more
openaire   +2 more sources

Hydrological-geomorphological and landscape features for identification of floodplain in small and middle rivers of the middle Volga region

SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2019
© SGEM 2019. The main factor for determination the floodplain terrace as a geomorphological body is the inundation of the bottom of river valleys by flood and high waters. However, to determinate a high floodplain and separate it from other terraces, it is necessary to use other natural components.
Kurbanova S., Prokhorenko N., Rozhko M.
openaire   +3 more sources

First Record of Chimaeroid Fish (Holocephali: ’Edaphodontidae’) from the Lower Cretaceous of the Middle Volga Region

Izvestiya of Saratov University. Earth Sciences
The record of a mandibular tooth plate of the chimaeroid fish Ischyodus sp. from the Lower Cretaceous deposits of the north of the Saratov Volga River Right Bank is described. The presumed age of the find is the Lower Aptian.
E. Popov, Yulia V. Zenina
semanticscholar   +1 more source

Mapping and spatial‐temporal assessment of gully density in the Middle Volga region, Russia

Earth Surface Processes and Landforms, 2018
A large‐scale mapping of gully density was carried out for the Middle Volga region of the Russian Plain (188 000 km2) based on the interpretation of aerial photographs (scale 1:17 000; surveys undertaken during 1956–1970).
V. Golosov, O. Yermolaev, I. Rysin, M. Vanmaercke, R. Medvedeva, M. Zaytseva   +5 more
semanticscholar   +1 more source

Zooplankton of the Bol’shoi Tsivil River (Middle Volga Region) under a changing hydrological mode and an increasing anthropogenic load

Biology Bulletin, 2012
The zooplankton composition and structure in the Bol’shoi Tsivil River have been studied. The results were compared to A.S. Morozov’s study of this river in 1913–1914, when it was a water-mill dam regulated stream. The fauna still features a significant number of eutrophic water indicators, and Rotifera prevails as before.
openaire   +1 more source

THE MORPHOLOGICAL AND GENETIC DIVERSITY OF THE CASPIAN ANADROMOUS SHAD, ALOSA KESSLERI KESSLERI (ALOSIDAE) FROM THE AKHTUBA RIVER (LOWER VOLGA REGION) IN THE CURRENT TIME PERIOD. TO THE QUESTION OF THE INTRASPECIES STRUCTURE

Вопросы ихтиологии / Journal of Ichthyology
The paper presents data on variability of morphological and population-genetic features of the Caspian anadromous shad from the Akhtuba River for three years in a row (2020-2022).
K. Kuzishchin
semanticscholar   +1 more source

Gully Erosion Zoning in the Middle Volga Region

Eurasian Soil Science, 2023
R. Medvedeva, O. Yermolaev
semanticscholar   +1 more source

Kellicottia bostoniensis (Rousselet, 1908) and K. longispina (Kellicott, 1879) (Rotifera: Brachionidae): Features of Occurrence and Distribution in the Lakes of the Upper and Middle Volga Region

Russian Journal of Biological Invasions, 2023
V. Podshivalina, A. S. Semenova
semanticscholar   +1 more source