Nadezhda Poddubnaya

• PhD
• Senior Researcher at Cherepovets State University

Mercury is one of the most hazardous environmental pollutants due to its high toxicity to animals and humans. The purpose of this study is to determine the presence or absence of seasonal changes in the mercury level in small mammals in forest ecosystems near the town of Cherepovets. The fur, organs, and tissues of common shrew (Sorex araneus Linna...

The distribution of exposure to Hg in amphibians remains unknown on most continents. The Ussuri broadleaf and mixed forests ecoregion is a region of high biodiversity, the nine species of amphibia living on its territory are prey for over 25 threatened and rare vertebrate species. To understand the potential risks to wildlife, we measured the total...

The study presents the analysis of δ¹³C and δ¹⁵N values in the hair of several Carnivora species (brown bear, Eurasian lynx, wolf, red fox, European pine marten, least weasel, European polecat, stoat, otter) from the Vologda region (North-West of the Russian Federation). The value of δ¹³C varies from -27.9‰ to -20.4‰, δ¹⁵N – from 3.5‰ to 15.3‰. Thi...

The study aims to analyze the dynamics of the Eurasian lynx in the mountain taiga, and to search for the factors affecting the numbers of this predator. The study was conducted in the Southern Urals (Russia) from 2008 to 2019. The dynamics of lynx and its main prey numbers Capreolus pygargus, Lepus timidus and L. europaeus, Tetrao urogallus and Bon...

When studying the ecological effects of the influence of a hydroelectric power station (HPS) dam on the zooplankton of the regulated section of the Angara River and the effect of the zooplankton downstream drift on the feeding conditions of fish of the Bratsk Reservoir during the vegetation period of 2022, it has been established that water column...

The role of the Korean wood mouse in mercury transport was studied by total mercury in 2018 and 2022. In 2018, the total mercury content of the Korean wood mouse was generally lower than in 2022. What is the reason for such differences in mercury levels between years is not clear. Total mercury in this rodent ranged from 0.000 mg/kg dry weight (DW,...

The aim of the research is to determine the total mercury (THg) in small mammals in forest ecosystems at a distance of 3 – 8 km from the boundaries of the industrial site of PJSC Severstal near Cherepovets, Vologda region. THg in the pelage and organs of the Ural field mouse (Apodemus uralensis, Pallas, 1811) varies from less than 0.001 to 0.56 mg/...

В статье представлены результаты изучения экологии и биологии сизоворонки Ставропольского края в период сельскохозяйственной трансформации среды 1984–2019 гг. Благоприятные условия для жизни птицы находят в степных участках для выпаса животных и на неорошаемых пахотных землях. Сизоворонки селятся преимущественно в норах естественных обрывов (46.9%...

During the growing season of 2022, the studies were carried out in the water area of the Bratsk Reservoir (the Angara River) and in the near-dam site of the Bratsk high-level hydroelectric power station. The ecological effects of the hydroelectric dam on the zooplankton in the regulated section of the river were studied and the impact of the zoopla...

The article presents data on the composition and seasonal dynamics of airborne pollen in Cherepovets and Vologda. The study was carried out from April 10 to September 30, 2014 and from April 16 to August 31, 2015 in Cherepovets, and from June 3 to September 30, 2019 in Vologda. Pollen data were obtained from the Durham gravimetric samplers. Samples...

The results of study of the ecology and biology of the European Roller in the Stavropol Region during the period of agricultural transformation of the environment in 1984–2019 are presented. Favorable conditions for this bird species are found in steppe areas used for grazing animals and on non-irrigated arable land. Rollers nest mainly in holes in...

The results of study of the ecology and biology of the European Roller in the Stavropol Region during the period of agricultural transformation of the environment in 1984-2019 are presented. Favorable conditions for this bird species are found in steppe areas used for grazing animals and on non-irrigated arable land. Rollers nest mainly in holes in...

From 2011 to 2020, tigers were recorded using camera traps in the Lazovsky Nature Reserve and Zov Tigra National Park, Southeast of the Sikhote-Alin Mountains. Sixty-seven adult or subadult individuals were identified. On average each year, 14 individuals were photographed in the Nature Reserve, and 8 were photographed in the National Park. The num...

This study discusses one of the aspects of the mercury problem, which is the relationship between aquatic and terrestrial ecosystems. We indicate that the mercury concentration in the Amur tiger fur (Panthera tigris altaica) is higher in the coastal area than in the inland area because the coastal areas are exposed to the impact of marine atmospher...

We present the first opportunity to study mercury in the fur of a water deer that recently entered Russia.13 samples from 7 animals (fur was taken from the back and belly) were collected similarly to the World Health Organization recommendations for humans. The mean concentration of total mercury in the fur of water deer was 0.01 0.003 mg/kg, which...

To assess the state of the Panthera tigris altaica (hereinafter – tiger) population, its annual monitoring is being carried out on 16 sites within its range, as this subspecies is still considered threatened. These sites include state nature reserves and adjacent territories, which differ in their protection status. In this paper, a number of tiger...

Being a global pollutant, mercury can originate from both natural as well as anthropogenic sources. Coastal marine atmospheric fog is considered a potential source of ocean-derived monomethylmercury (MMHg) to coastal terrestrial ecosystems. However, the ratio between mercury appearing through natural processes and that from the results of human act...

In the European part of Russia, there is a decrease in the area and number of the European Roller. We performed a preliminary study of the role of behavioral ecology in the survival of the species. The material was collected in the Stavropol krai in 2004, 2006-2019. Females and males were distinguished by color intensity (females' plumage is paler)...

The article presents the results of the study of aeropalinological spectra of the city of Cherepovets (59 ° 07′59 ″ N, 37 ° 53′59 ″ E), carried out during the growing season 2014-2015. The method of gravimetric sampling was used (Durham’s pollen trap). Data was obtained on 22 taxa and the dynamics of dusting of various palynomorphs; the dominant ta...

Mercury is a highly toxic metal for all living organisms. Even low doses of the organic form of mercury can cause disruption in some functions of the human body. The content of mercury in the hair of residents (n=71) of Babushkinsky district, Vologda region, Russia was determined. Babushkinsky district is located away from industrial sources of mer...

Being a global pollutant, mercury can originate from both natural as well as anthropogenic sources. Coastal marine atmospheric fog is considered a potential source of ocean-derived monomethylmercury (MMHg) to coastal terrestrial ecosystems. However, the ratio between mercury appearing through natural processes and that from the results of human act...

The most abundant species of the forest-inhabiting shrews, the long-clawed shrew Sorex unguiculatus, the Laxmann's shrew S. caecutiens, and the taiga shrew S. isodon, were collected in 2018 in the Lazovsky District, Primorsky Krai, Russia. The total concentration of mercury in muscles, liver, kidneys, brain, and pelage was determined using the Zeem...

The content of mercury in the muscle tissue of fish from the water bodies of the Vologda Oblast of the Russian Federation varies from less than 0.001 to 1.679 mg / kg wet weight. The minimum average values (mg/kg wet weight) were noted for peaceful benthivorous species-goldfish and bream (0.081-0.127), maximum-for predatory species-pike and perch (...

The rapid growth of cities causes behaviour changes in birds in response to urban environmental factors. The avian response to human disturbance has recently been studied by a non-invasive research tool as an alert distance (AD) and a flight initiation distance (FID) assessment. The tolerance of hooded crows (n = 395), jackdaws (n = 394) and rooks...

In the present paper we studied the helminth fauna of the digestive tract of Perca fluviatilis (Perciformes) of the water bodies in the Samarskaya Luka National Park (Russia) in 1990–2016. In the early 1990s, nine species of intestinal helminths were registered for P. fluviatilis. Life cycles of 78% of them were associated with zooplankton organism...

Background: The effect of hyponatremia on the body is studied on model objects. The related question concerns the degree of compliance between manifestations of hyponatremia and protective mechanisms in humans and other species of vertebrates. Objectives: To identify the regulation ranges and patterns of adaptation to hyponatremia by cells of va...

The crow birds are an inalienable component of anthropogenic ecosystems and the most successful species is the hooded crow. The success of a species depends on the conformity of a speed of adaptation process to the change rate in the environment. Organisms, adapting to the new environmental parameters in the city, demonstrate adaptive mechanisms, a...

Background: Hypernatremia supports the movement of water from the intracellular to the intercellular space. This shift leads to cells shrinkage and disruption of intracellular processes, representing risk factors of morbidity and mortality in clinical circumstances. on the other hand, hypernatremia triggers protective mechanisms that counteract dam...

This paper seeks to shed light on the primary causes of the latitudinal cline in species diversity, the asymmetry in species richness between the northern and southern hemispheres, and various patterns of species richness along mountain and continental slopes, which are at present of central interest in ecology. To that end, we restate, further dev...

This article presents a new hypothesis on the origin of life on Earth. According to this hypothesis, life arose within the limits of a particular material system representing a set of specific local environments integrated by a common circulating liquid medium where relatively short RNA molecules, viroid-like particles, are replicated with great ac...

Some time delay between materialization and production of any information is unavoidable, since there is always a time distance between these processes. As for the delay in materialization of genetic information, that is because the natural selection acts upon groups of living organisms on momentary basis whereas the selected information is realize...

We conducted a study of the peculiarities of the motor activity of juvenile and adult individuals of Daphnia magna in the process of thermal selection. On the example of Daphnia, we experimentally proved the assumption that the decrease in the motor activity of the ectotherms in the selected temperature range is a behaviour mechanism typical for th...

Mercury (Hg) and its compounds are considered as one of the ten major dangerous groups of chemicals. The content of mercury in the coat was 136 cats and 113 dogs in the territory of the Vologda Region in Cherepovets. The total mercury concentration in the wool samples was measured on a mercury analyzer RA-915 +. The values of the mercury index in c...

The species diversity, abundance, and biomass of zooplankton in the pelagic and coastal zones of Lake Kandrykul were studied in 2007–2012. The community was dominated by large Cladocera. The maximum abundance of zooplankton was observed in the anomalously warm 2010. In July, the highest abundance of zooplankton (1300 thousand ind./m³) was recorded...

The characteristic properties of uptake and distribution of mercury in terrestrial ecosystems have received much lesser attention compared to aquatic particularly in Russia. Terrestrial ecosystems adjacent to large industrial manufactures—potential sources of mercury inflow into the environment frequently remain unstudied. This is the first report...

Heracleum sosnowskyi is one of the most aggressive alien species in Europe. However, no information is available on its genotoxic effects. The goal of this study was to investigate cytological aberrations and genotoxic effects of H. sosnowskyi juice using the well-established Allium test. Root tip cells were treated with varying concentrations (1,...

Trophic and spatial components of ecological niches of two canids native Vulpes vulpes and introduced Nyctereutes procyonoides are overlapping partially in the studied region. Maximum concentrations of mercury in predatory mammals of Canidae family from surroundings of Cherepovets have been determined in liver and kidneys (over 0.50 mg/kg wet weigh...

Kolomiytsev, N.p., Poddubnaya, N.Y. 2014. Breeding biology of the Long-billed Plover Charadrius placidus in the northern part of its range in the Russian Far East. Wader Study Group Bull. 121(3): 181-185. We present information on the phenology, behaviour, population size, nests and nesting habitat, dates and intervals of egg-laying, dimension and...

Conditions of existence are not inherent to environment, for the conditions of existence of each physical object are defined not only by its environment, but also by its own properties: features of its structure, kind and strength of internal links, a capacity to compensate external actions, and many other things that altogether define ‘conformity...