Coast Of Crimea Research Articles

Structural and functional parameters of the Black Sea phytoplankton during the summer bloom of the coccolithophore Emiliania huxleyi

The aim of the study was to examine the main primary production indicators, describe the controlling factors and identify the conditions for the weak bloom of Emiliania huxleyi in the Crimea coast of the Black Sea during June – July 2022. The surface chlorophyll a (Chl a) varied between 0.3 to 1.5mgm-3 and primary production (PP) within 12–174mgC m-3 day-1. The integrated concentration of Chl a in the euphotic layer was 4–29mgm-2, and that of PP - 240–835mgC m-3 day-1. On average, 49% of Chl a was located bellow the photosynthetic zone. The relationship between integral PP and the total Chl a, nitrogen (nitrates and ammonium), phosphates and silicates in the euphotic layer, analyzed by a multiple regression, showed that 70% of the PP variability was accounted for by the first three variables. While the significance of total Chl a was the highest, followed by phosphates, nitrogen had a negligible effect and that of silicates was not detected. In the surface layer (0–1m), the total phytoplankton biomass was co-dominated by dinoflagellates, the large cell diatom Pseudosolenia calcar-avis and the coccolithophore E. huxleyi. A weak bloom of E. huxleyi (cell abundance 1.0–1.8·106 cells L-1) was detected at 11 out of the 23 sampling stations. The relatively large thickness of the upper mixed layer (about 10m on average) and phosphorus deficiency were the main factors limiting the bloom of this coccolithophore.

The first record of larval <i>Crassostrea gigas</i> (Thunberg 1793) (Bivalvia, Ostreidae) from the Black Sea

Larvae of the oyster, Crassostrea gigas (Thunberg 1793) are being found in the plankton of the Black Sea for the first time. The studies were carried out in 2014–2023 along the Sevastopol coast. Samples were taken monthly with a Jeddy plankton net (inlet diameter 36 cm, mill gas mesh 135 µm). A water layer of 10–0 m was investigated. Live material was processed by total counting the larvae in the Bogorov chamber, using MBS-9 and Mikmed-5 light microscopes. Oyster larvae were recorded in August 2020 and observed in the plankton from the end of August to the beginning of October. They were also found in the waters at Miskhor, southern coast of Crimea in August 2023. The density of larvae amounted to 1–3 ind./m3. Larvae were found at the following water temperatures: minimum, 19.7 °C (September 2021), maximum, 26.6 °C (August 2022). In August, the larvae of C. gigas were at the stage of veliconch, their sizes ranging 275–340 mkm. The sizes of oyster larvae in September and October were 380 mkm, being already in the late stages of development. In the coastal waters of the northern part of the Black Sea, C. gigas larvae can settle on substrates from late August to mid-October.

«УЧРЕДИТЬ НА ЮЖНОМ БЕРЕГУ КРЫМСКОГО ПОЛУОСТРОВА В СЕЛЕНИИ ЯЛТАХ ТАМОЖЕННУЮ ЗАСТАВУ…»: К ИСТОРИИ СОЗДАНИЯ И ДЕЯТЕЛЬНОСТИ ЯЛТИНСКОЙ ТАМОЖНИ И ЮЖНОГО ОТРЯДА ТАВРИЧЕСКОЙ БРИГАДЫ ПОГРАНИЧНОЙ СТРАЖИ

The article examines the history of the creation and activities of the Yalta customs outpost (later the Yalta customs), which celebrated its 200th anniversary in 2024. Based on archival documents, some of which are being introduced into scientific circulation for the first time, as well as previously published statistical materials, collections of the customs department and other official publications of the Ministry of Finance of the Russian Empire, the main stages of interaction between customs institutions, border and quarantine guard units operating in the Taurida province are determined in the 19th century. The work of these authorities in peacetime and the features of their functioning during the Crimean (Eastern) War of 1853–1856 and the Russo-Turkish War of 1877–1878 had been analyzed. Measures aimed at optimizing the work of these units in difficult conditions of combat operations and occupation of the Crimean Peninsula by the enemy had been studied. The specifics and sources of formation of personnel of the Yalta customs outpost, units of the Taurida border guard brigade, and quarantine guard units stationed in the province had been identified. It is concluded that the organization of customs, quarantine and border services on the territory of the Taurida province, namely, on the southern coast of Crimea in the 19th century was well thought out and fully consistent with local specifics, since the peninsula was not only the center of external and internal trade operations in the Northern Black Sea region, but also the most important region in geopolitical and strategic terms. Russia, which has repeatedly faced the need to eliminate external threats while simultaneously increasing its economic potential, has taken the necessary steps to ensure the normalization of the activities of customs institutions in the region.

Erratum to: Reproduction of the Invasive Species Bonnemaisonia hamifera Hariot near the Southern Coast of Crimea (Black Sea)

Erratum to: Reproduction of the Invasive Species Bonnemaisonia hamifera Hariot near the Southern Coast of Crimea (Black Sea)

Results of Epizootiological Survey of the Territories of the Republic of Crimea and Sevastopol in 2015–2022

Introduction: Systematic studies of endemic zoonotic diseases on the Crimean Peninsula resumed in 2015 after a long break. Objective: To specify boundaries and determine epizootiological activity of the natural foci of infectious diseases in the Crimea and to update the list of possible reservoir hosts and vectors based on the results of field studies conducted in 2015–2022. Materials and methods: Counting and trapping of small mammals, ixodid ticks and mosquitoes, collecting of pellets of birds of prey, sampling of water and other zoological and entomological materials were carried out in the Crimea in the years 2015 to 2022. Results and discussion: According to the results of epidemiological and epizootiological monitoring of the Crimean Peninsula, the samples tested positive for tularemia were collected on the territory of 14 administrative entities, leptospirosis – 21, hantaviruses – 12, tick-borne encephalitis – 2, Crimean-Congo hemorrhagic fever – 7, Lyme borreliosis – 21, West Nile fever – 3, Q fever – 2, Marseilles fever – 6, monocytic ehrlichiosis – 1, and granulocytic anaplasmosis – 8 entities. A new hantavirus was identified in the Leninsky district. Positive findings of markers of the Crimean-Congo hemorrhagic fever virus were registered not only in the main vector, but also in other species of ixodid ticks. True boundaries of the natural foci of Lyme borreliosis in the Crimea were much wider and ran through both forest and steppe zones. A stable reproducing population of epidemiologically significant Ae. albopictus mosquitoes was found on the southern coast of Crimea. Conclusions: Based on the findings, we specified the boundaries and confirmed the activity of natural foci of infectious diseases during the study period, updated sources of infections, reservoir hosts and vectors, and compiled the “List of enzootic (endemic) territories of the Crimea, on which circulation of infectious agents common to humans and animals was found based on the results of field material studies in 2015–2022,” all facilitating managerial decisions on prevention of natural focal infections.

About adaptation of Berberis aquifolium in forest communities of the Southern coast of Crimea

About adaptation of Berberis aquifolium in forest communities of the Southern coast of Crimea

New Data on Cold Seeps and Beach Bacterial Structures Study in Laspi Bay (Southern Coast of Crimea)

New Data on Cold Seeps and Beach Bacterial Structures Study in Laspi Bay (Southern Coast of Crimea)

Reproduction of the Invasive Species Bonnemaisonia hamifera Hariot near the Southern Coast of Crimea (Black Sea)

Reproduction of the Invasive Species Bonnemaisonia hamifera Hariot near the Southern Coast of Crimea (Black Sea)

ФОРМИРОВАНИЕ ПОЛОЖИТЕЛЬНЫХ АНОМАЛИЙ ТЕМПЕРАТУРЫ ПОВЕРХНОСТИ ЧЕРНОГО МОРЯ

Based on the satellite data at the points of a high-resolution regular grid for the period from 2008 to 2021, positive anomalies of the sea surface temperature (SST) in the northern Black Sea and off the southwestern coast of Crimea have been identified. It has been shown that there are vast areas with an exceeding of SST over the mean for the measurement period up to 4-5 and 5-6°C and a monthly total area (for example, in May 2018) about 200000 and 100000 km2, respectively, in the northern Black Sea. The analysis of available satellite data has led to the conclusion that warm SST anomalies occur mainly in May and October. The maximum (over the entire analyzed period) warm SST anomaly (exceeding 5°C) was reached in May 2012, when its area was 200000 km2. The spatial structure and some statistical characteristics of the identified SST anomalies have been described and analyzed. It has been shown that the typical frequency of vast SST anomalies is at least one case per several years, while they are generated by abnormal heat fluxes on the sea surface with the inflow of anomalously warm river water in shallow areas of the northwestern shelf and spread to the open sea areas due to the horizontal advection of predominantly wind-driven origin. The average annual SST anomalies off the northwestern coast of Crimea and in the northern Black Sea correlate at a level of 0.97.

S.V.Rachmaninov and his circle on the Southern Coast of Crimea: new pages of the history of Russian musical culture of the late XIX – early XX century.

The subject of the study is the personal history of the outstanding Russian composer S.V. Rachmaninov and other representatives of the national musical culture of the late XIX – early XX century in the historical space of the Southern coast of Crimea. The literature has repeatedly suggested that composers and musicians played a significant role in the formation of the "cultural landscape" of the Crimea of the late XIX – early XX century. However, as the authors of the article have seen studying the history of country resorts formed on the Southern Coast at the beginning of the XX century, there are still a lot of "white spots" on this "historical and cultural map". The elimination of these gaps makes it possible to fill in both the history of the Southern Coast of Crimea and biographical information about cultural actors. With the help of complex work with historical sources – documents from the State Archive of the Republic of Crimea, reference and bio-bibliographic literature, ego documents (memoirs, correspondence), including ones that have been poorly introduced into historiographical circulation, the history of S.V. Rachmaninov's stay on the Southern Coast of Crimea is reconstructed, his visits are placed in the context of the historical space in flux. The circumstances of S.V. Rachmaninov's stay on the Southern Coast of Crimea in the late XIX – early XX century have been clarified or re-established, and related historical monuments and places in Simeiz, Mishor and Yalta have been identified. The reconstructed pages of life and creative activity on the Southern Coast of Crimea by S.V. Rachmaninov, M.A. Stankevich (Golostenova), F.I. Chaliapin and their circle of colleagues, relatives, friends and acquaintances from among the creative intelligentsia, South Coast summerfolk, patrons and patrons of cultural life undoubtedly complement the picture of a rich cultural life in the historical space of the Southern Coast Crimea in the late XIX – early XX century, contributing to understanding Crimea as a important place of "historical memory" of Russia.

Научная рецензия на монографию А. Г. Головачевой «А. П. Чехов и Крым». Изд-е 2-е, испр. и доп. М.: Театральный музей им. А. А. Бахрушина, 2022. 200 с.: ил.

The book under review is based on extensive factual and archival material and offers the history of the last years of A. P. Chekhov’s life and creative work in Crimea. The book introduces the writer’s contradictory impressions of Crimea, the literary tradition in the depiction of the southern coast of Crimea by Russian writers and the reflection of Crimean places in the works by Chekhov himself.

Seasonal dynamics of hydration of shoots of resource species of shrubs in the mediterranean subarid subtropics

An attractive region for tourism - the Southern Coast of Crimea, including the vicinity of the Nikitsky Botanical Garden – is experiencing a high year-round anthropogenic load. This has a negative impact on the conservation and renewal of woody and herbaceous resource species, many of which are ornamental, food and medicinal. As part of the study of the possibilities of renewing the resources of ornamental shrubs and assessing their adaptive potential in the conditions of the Mediterranean subtropics, the article characterizes the water content in buds and shoots based on the methodology for determining the percentage of water per dry mass. The dynamics of the hydration of shoots in winter, spring and autumn is shown. A comparative analysis of the saturation of shoots with water in unstable and stable species at different times of the year is carried out. Species with minimum and maximum water saturation of buds and shoots have been identified. The difference is indicated in the studied species in terms of water content before saturation in natural conditions and after, already in thelaboratory. Attention is drawn to the dependence of species stability on the month of saturation. The characteristic of saturation of plant tissues with water is given when weather conditions change in spring (rainy and dry weather, thaw) when modeling climatic conditions in the laboratory. The species in which the maximum saturation with water occurs both during imitation of rainy weather and during a thaw are highlighted. These studies were conducted for the first time on the described species in the conditions of the Mediterranean subtropics.

Спасение крымских Романовых: личный выбор матроса Задорожного

The article is dedicated to the personality of the Black Sea Fleet sailor Philip Zadorozhny. For five months in 1917–1918, he served as a head of the security team for members of the former royal family residing in Cri-mea during that time. These included the mother of Nicholas II, Maria Fedorovna, the sisters of the abdicated Tsar, Ksenia and Olga, and the Grand Dukes Nikolai Nikolaevich and Alexander Michailovich. Zadorozhny’s legendary role in saving the “Crimean Romanovs” from robberies and executions is well-documented, but until now there has been no detailed biographical information available about him. The author has discovered archival materials related to Zadorozhny, on the basis of which his participation in revolutionary events was reconstruct-ed. It was established that, in May 1917, sailor Zadorozhny was a member of the Black Sea Fleet delegation sent to the Baltic fleet and ground units of the Russian army to agitate for the continuation of the war until a victori-ous conclusion. Subsequently, Zadorozhny was twice elected as a delegate to the Sevastopol Soviet from the Socialist Revolutionary Party, and he served as a member of the commission for the protection of the fortress, fleet, and city. On November 30, 1917, Zadorozhny was sent to the southern coast of Crimea to lead the security team for the Romanov family. His close ties with the Alupka Soviet, among other things, helped him protect high-ranking prisoners from anarchist members of the Yalta Soviet. Through the personal initiative of sailor Za-dorozhny, part of the former imperial family concentrated in Crimea managed to escape and go into exile a year later.

Comparative Assessment of The Climatological Conditions on The Biological Activity of Ampelocenoses Soils Cultivated in The Wine-Growing Regions of The Southern Coast of Crimea and The Eastern Part of The National Park “Fruska Gora”

Over the last years, research interest in the use of soil biological activity indicator for predicting the state and sustainability of natural and agroecosystems has increased significantly due to climatic changes altering the location and boundaries of established agroclimatic belts. These changes are characterized by unprecedented speed, as well as spatial and temporal heterogeneity. In this regard, the identification of regularities of influence of regional agroclimatic factors on soil microbiota as an indicator of soil health under different types of land use is of great relevance. In this paper, we tried to determine the climatic factors limiting the activity of soil microbiome functioning on the basis of calculation of climatic indices in two regions of grape cultivation close in temperature regime, but contrasting in humidity, located in the Republic of Crimea and the Republic of Serbia.

Сравнительный анализ лимитирующих функционирование почвенного микробиома факторов при культивировании винограда в условиях Южного берега Крыма и Автономного края Воеводина Республики Сербия

Research interest in the use of soil biological activity indicator for predicting the state and sustainability of natural and agroecosystems has increased significantly in recent years due to climatic changes changing the location and boundaries of established agroclimatic belts. Distinctive features of these changes are unprecedented speed, as well as spatial and temporal heterogeneity. In this regard, the identification of regularities of influence of regional agroclimatic factors on soil microbiota as an indicator of soil health under different types of land use is of great relevance. In this work, an attempt was made to determine the climatic factors limiting the activity of soil microbiome functioning on the basis of calculation of climatic indices in two regions of grape cultivation close in temperature regime but contrasting in humidity. The results of the research showed that the value of basal respiration in the soils of ampelocenoses of the Autonomous Province of Vojvodina of the Republic of Serbia was 6-11 times higher than in the soils of ampelocenoses of the South Coast of Crimea, which is probably due to a sharp deficit of moisture in the latter (moisture coefficient 0.39 vs. 1.13 in Vojvodina). Regardless of the geographical location of wineries, basal respiration of soils in organic vineyards was twice as high as in soils of farms practicing the traditional system of grape cultivation, indicating more favorable conditions for the functioning of the soil microbial community. Keywords: BASAL RESPIRATION, BIOCLIMATIC INDICES, VINEYARDS, AMPELOCENOSIS, WINKLER THERMAL INDEX, HUGLIN HELIOTHERMAL INDEX, SELYANINOV HYDROTHERMAL HUMIDIFICATION COEFFICIENT, HUMIDIFICATION COEFFICIENT

Ground-level ozone concentration and emergency conditions in patients with bronchial asthma on southern coast of Crimea: retrospective study

OBJECTIVE. To evaluate the link of emergency conditions in patients with bronchial asthma to the ground-level ozone concentration in different seasons of the year on the southern coast of Crimea.
 MATERIALS AND METHODS. Epidemiological study of frequency of visits concerning emergency conditions in patients with bronchial asthma in Yalta according to the ambulance station from April 2010 to March 2011; permanent recording of the ground-level ozone concentration at the background environmental monitoring station (BEMS) by the optical method using automatic gas analyzer APOA 370 (HORIBA). Analysis of the collated data dependence via the Spearman non-parametric correlation analysis.
 RESULTS: Correlation analysis of daily, average monthly and seasonal data on ambulance call with regard to severe bronchial asthma and average daily, maximum, minimum ground-level concentration (GLC) during the astronomical year (April 2010- March 2011) has revealed single-type dependence in nature on the amplitude of ozone changes: statistically significant in November and at the level of trends – in September 2010 that does not provide a sufficient basis to talk about a negative ozone impact on the condition of patients with bronchial asthma on the territory of the southern coast of Crimea. The possible causes of the identified weak dependence are analyzed, though the daily average of ozone was typically higher than MPV (maximum permissible value) throughout the follow-up period, and in the summer – higher than MPV with 8-hour exposure.
 DISCUSSION. However, considering data of numerous foreign studies on the quantification of ozone negative impact on the human body, it is necessary to analyze more long-term series of observations in view of related weather factors of the Southern coast of Crimea that can significantly modify response of the body to GLC. This will determine ozone levels along with other weather conditions, safe for patients with bronchial asthma, including those who undergo rehabilitation in sanatorium-resort institutions of Crimea.

Rare earth elements in the red, brown, green algae and the seagrass from Kazachya Bay (Crimea, Black Sea)

The present study is focused on the first ever quantification of rare earth elements (REE) in four mass plants of the Black Sea coast of Crimea: the brown alga Gongolaria barbata, the green alga Ulva rigida, the red alga Ceramium ciliatum, and the seagrass Zostera noltei using inductively coupled plasma mass spectrometry. The REE contents in the macrophytes were found to be one to two orders of magnitude lower than in the sediments. In the plants, three groups of REE with similar levels have been identified. The first group included the most abundant elements Sc, Y, La and Ce; the second group consisted of Pr and Nd with the intermediate contents; and the third group contained the elements with the lowest contents: Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. The contribution of light REE (Sc, Y, La, Ce, Pr, Nd) to the total REE content in the plants was 91–96%. The highest REE levels were found in the red alga and seagrass rhizomes. Higher translocation factors of Sc, Pr, La, Ce and Tb between seagrass rhizomes and leaves were noted. In terms of the REE content decrease, the marine plants are arranged in the following order: seagrass rhizomes > red alga > brown alga > seagrass leaves > green alga. Brown algae attached to the rocky seabed are widespread in the upper sublittoral, have a long lifespan, and accumulate relatively high amounts of REE. Therefore, they can be used as effective bioindicators of REE pollution in the marine environment.

Rare Earth Elements in the Seagrass Zostera noltei and Sediments from the Black Sea Coast of Crimea

In the present work, we assessed the contents of rare earth elements (REEs), including yttrium and scandium, in rhizomes and leaves of the widespread seagrass Zostera noltei Hornemann 1832 and in the nearby sediments from the Black Sea coast. The total REE content in the sediments was found to be much higher than in Z. noltei. The order of decrease in the major REE contents in the sediments and the seagrass rhizomes was identical, except for La and Y. La was the most abundant in the sediments, and Y in the rhizomes. The contents of all REEs in rhizomes of Z. noltei were 1.5–10 times higher than in the leaves. The highest difference in the REE contents was found for the minor elements (Sm–Lu). The translocation factors for Sc and the minor elements (excluding Tb) from the sediments to the rhizomes and from the rhizomes to the leaves turned out to be pairwise equal, which indicates the similarity of the REE translocation mechanisms. Comparing our results with the literature data, it is possible to conclude that the seagrass Z. noltei does not have an advantage in the REE accumulation over marine macroalgae. At the same time, large coastal deposits of this seagrass after storms allow us to consider it as a possible source of REEs in the future.

НАСЛЕДУЕМОСТЬ НЕКОТОРЫХ ХОЗЯЙСТВЕННО ЦЕННЫХ ПРИЗНАКОВ У СЕЯНЦЕВ ВИНОГРАДА В ПОПУЛЯЦИИ ТАЛИСМАН х МАРКИЗА

The article presents the results of studies (2021-2022) on assessing the economically valuable properties and isolation of heterotic seedlings in the population ‘Talisman x Marquiza’. In the work of breeding new grape varieties, much attention is paid to the variety Talisman, which is highly valued as a donor of such traits as early ripeness, large berry size, downy mildew, gray rot and frost resistance. The object of the study was seedlings in the amount of 18 pcs and initial forms, in which agrobiological records were provided in accordance with 13 traits. The studies were carried out in the breeding plot of Partenit village, South Coast of Crimea. The scheme of planting grape bushes was 3 × 1.5 m, bush training – one-shouldered Guyot in the non-irrigated plot. Heredity pattern and indicators of heterosis were determined in the population according to the following traits: «bunch weight», «fruitfulness coefficient», «shoot productivity in terms of the raw bunch weight», «mass concentration of sugars». A transitional heredity pattern of «bunch weight» trait with the effect of adverse dominance of paternal form Marquiza was established in the population ‘Talisman x Marquiza’. According to this trait, the seedling № 21-11-4-39 was isolated with the effect of heterosis +1.07 %. According to the trait «mass concentration of sugars», true heterosis with the effect of +16.0 % was established in the studied family. Correspondence of the trait «fruitfulness coefficient» in initial forms and offspring was registered. Percentage content – 27.8 % of seedlings, № 21-11-4-31, № 21-11-4-37, № 21-11-4-38, № 21-11-4-49, № 21-11-4-50, heterotic according to this trait, were isolated (the effect of heterosis ranged from +22.0 % to +121.3 %). The indicator of dominance degree of shoot productivity according to the raw bunch weight trait shows a hybrid depression. Three seedlings, superior to the best form of Talisman in this indicator with the effect of heterosis from +2.96 % to +36.29 % were isolated in the population.

Analysis of the Features of Water Circulation in the Northern Part of the Black Sea for Different Seasons on the Basis of the Results of Numerical Modeling with the Assimilation of the Data of Hydrological Surveys in 2016

The analysis of the dynamic and energy characteristics of water circulation in the northern part of the Black Sea was performed on the basis of the assimilation in the numerical model of the data of three hydrological surveys in 2016, carried out on expeditions of 87, 89 and 91 cruises of the R/V Professor Vodyanitsky (summer, autumn and autumn-winter seasons). Numerical experiments were implemented on a horizontal grid (~1.6 km × ~1.6 km) with 27 vertical horizons and an atmospheric effect close to the real one was used. A procedure of assimilation of the observational data was based on the Kalman filter, taking into account the heterogeneity and nonisotropy of the errors of the estimates of the temperature and salinity fields. The integral energy terms in the kinetic and potential energy budget equations for three seasons were estimated. In the summer season, there was a slight weakening of the RC and the main mechanism for the formation of anticyclonic eddies near Sevastopol and near the southeastern shores of Crimea was baroclinic instability of the current (as evidenced by the increase in the slope of isopycnical surfaces and negative values of the work of the buoyancy force). An anticyclonic eddy near Yalta with a radius of about 25 km was generated due to the development of shear instability of the current. In the autumn season, the RC jet was pressed to the shore and there was a decrease in the number of eddies in comparison to the summer season. The formation of anticyclonic eddies with a radius of about 35–40 km in the western part of the region was caused by barotropic instability of the current, the formation of eddies along the Crimean coast – by baroclinic instability. In the autumn-winter season, the RC had a pronounced jet character and there was an increase in the processes of baroclinic instability with the generation of eddies of different scales between the coast and the RC, as well as in the area, located between 31.5 and 33° E, with the weakening of the wind effect. During all seasons, small-scale anticyclonic and cyclonic eddies could be generated along the western and eastern coast of Crimea in the upper layer when current flowed around the coastline and inhomogeneities of the bottom topography under the action of weak winds.