the vogla don and ural rivers follow though whitch country

#THE VOGLA DON AND URAL RIVERS FOLLOW THOUGH WHITCH COUNTRY ARCHIVE#

#THE VOGLA DON AND URAL RIVERS FOLLOW THOUGH WHITCH COUNTRY ARCHIVE#

This study aims to describe a dataset consisting of up-to-date data on the occurrence of amphibians in the Volga and Don river basins (European Russia), which we have recently published in GBIF as the Darwin Core Archive ( Ruchin 2020). A specific feature is the reduced occurrence (lower abundance) of Pelophylax esculentus here and relatively frequent occurrence of the REL-type population systems ( Litvinchuk et al. The distribution of population systems of the Pelophylax esculentus group in the Volga basin also became clearer. The boundaries of their areas became clear, passing within the study area ( Dufresnes et al. In addition to new data on distribution and abundance of species, it has been established that species, previously considered Pelobates fuscus, consists of two cryptic species - Pelobates fuscus and Pelobates vespertinus.

This work can be considered the next stage in the study of distribution and abundance of amphibians for this territory after publication of 'Materials for inventory of amphibians and reptiles of the Middle Volga' ( Pestov 2002). This basin includes all or part of the territory of 14 regions of Russia. The main part of the Don basin is forest-steppe and steppe biomes, which are very heavily exposed to agricultural activities. The Don is the third largest river in the European part of Russia with a length of 1870 km and area of 0.43 million km 2. The Volga basin includes all or part of the territory of 37 regions of Russia. There are different types of biomes in the Volga basin, such as taiga in the north and semi-desert in the south ( Tockner et al. The area of the Volga basin is about 1.36 million km 2, which is 33% of the territory of European Russia. The Volga is the longest river in Europe and the 16th largest in the world. It can be assumed that this decrease is associated with weak floods, which do not fill the spawning reservoirs with water. Over the past 10 years, the population of Bombina bombina has decreased significantly.

Tailed amphibians are also significantly influenced by the appearance of the fish Perccottus glenii in spawning reservoirs as this is capable of destroying their larvae ( Reshetnikov and Karyagina 2015). On the other hand, the abundance and range of Salamandrella keyserlingii in the study area is gradually decreasing due to climate warming. Climate change contributed to the expansion of the range of Pelophylax ridibundus, which is gradually spreading to the north and begins to occupy all habitats suitable for it. The introduction of invasive species into reservoirs is also important for reproduction, as it influences the ability of amphibian populations to reproduce ( Ruchin et al. Changes in climate conditions in recent years have also affected growth, reproduction, phenology, survival, dispersal, distribution, parasitic relationships, competitive interactions and food availability for individuals ( Blaustein et al.

Climate change will change the geographical ranges of species and have an effect on dispersal capacity ( Duan et al. The data can be used by researchers, as well as helping the authorities to manage their territory more efficiently.Īmphibians are an important group of ectothermal animals that are particularly sensitive to global climate change and environmental conditions ( Trochet et al. The main purpose of publishing a database is to make our data available in the global biodiversity system to a wide range of users. This is especially relevant with the spread of cryptic species that can only be identified using molecular genetic research methods. A total of 13 amphibian species belonging to nine genera and six families have been registered within the studied territory, although the distribution of amphibian species in this region of Russia has not yet been fully studied. The dataset consists of 5,030 incident records, all linked to geographical coordinates. The dataset is based on our own studies that were conducted in the years 1996-2020. The dataset contains up-to-date information on amphibian occurrences in the Volga river basin and adjacent territories, located for the most part on the Russian plain of European Russia. Our dataset represents a significant addition to the occurrences of amphibians in the Volga, Don riverine basins and adjacent territories. A very successful attempt to solve this problem is the GBIF project, which allows a huge number of researchers to publish data in one place in a single standard. However, much of the existing distributional data are scattered throughout a multitude of sources, such as taxonomic publications, checklists and natural history collections and often, bringing them together is difficult. Knowledge about the distribution of living organisms on Earth is very important for many areas of biological science and understanding of the surrounding world.

The vogla don and ural rivers follow though whitch country