Abstract The data of 3-year observations of the abundance dynamics of microplanktonic fraction of Pseudodiaptomus marinus—a new alien copepod for the Black Sea—are presented. Seasonally, the first juvenile stages of the species appeared in the Sevastopol coastal waters in September. The maximum values were reached at different times: from the end of September to the end of November. Then the abundance

Abstract Two alien harmful species, the tropical bed bug Cimex hemipterus (Fabricius, 1803) (Cimicidae) and the western conifer seed bug Leptoglossus occidentalis Heidemann, 1910 (Coreidae), are recorded from Voronezh oblast (city of Voronezh) for the first time. A key for the identification of C. hemipterus and the cosmopolitan bed bug C. lectularius Linnaeus, 1758 is given. L. occidentalis lives

Abstract Pomacea species, also known as apple snails, are highly invasive freshwater organisms now occurring in Central and North America, Asia and Europe. Species misidentification within the genus has hampered efforts to manage their spread and impact, and thus Pomacea maculata have received much less attention that P. canaliculata. Species Distribution Models are well suited for a global screening

Abstract Invasive Alien Species are non-native plant species that displace native species and pose adverse effects to environment, ecosystem, economy and human health by diminishing the growth of native plants and also possess higher stress tolerance. In our present study four invasive alien species, namely Lantana camara, Parthenium hysterophorous, Ricinus communis and Ageratum conyzoides, were studied

Abstract The biomass allocation, leaf traits, and the CO2 assimilation rate in invasive Epilobium adenocaulon Hausskn and E. pseudorubescens A.K. Skvortsov and indigenous E. palustre L. were studied in the Middle Urals. E. adenocaulon had the maximum height, and E. palustre had the largest leaf canopy diameter. The most compact in linear sizes species E. pseudorubescens was characterized by the lowest

Abstract In recent decades, owing to the intensification of invasions of marine aquatic organisms in the Black Sea, the need has arisen for their monitoring in order to predict the consequences for local species and ecosystems. As a rule, most of the invading species are recorded in the recipient area owing to the findings of adult specimens. However, the findings of larval stages may indirectly indicate

Abstract In September 2018, polychaeta worms of the family Sabellidae—Laonome xeprovala Bick & Bastrop, 2018—were found in the Luga Bay (Gulf of Finland, Baltic Sea). This species was previously been recorded in Europe, but the eastern most point of its discovery was the Gulf of Wislin—the southeastern region of the Baltic Sea. The article presents the main morphological description and distribution

Abstract The relatively recent (2006) transatlantic invasion of the tomato moth Tuta absoluta from South America into the Old World is considered. On the basis of the use of the thermal and adaptive mathematical model of ontogenesis of T. absoluta, a conclusion is made about the threat of this pest species not only for sheltered soils but also for plantations of open soils (a possibility of development

Abstract In 2015–2017, the distribution of the freshwater bivalve Dreissena polymorpha was studied in the basin of the Northern Dvina River. This study provides the first record of the populations of D. polymorpha in the Yuras, Lyavlya, and Solombalka rivers. The density of the studied colonies of D. polymorpha was lower in comparison with populations in other parts of the range (Mann–Whitney U test

Abstract The published data on alien species in zoobenthos of the Black Sea are generalized for the last hundred years of research. The list of alien species is prepared; 61 zoobenthic alien species are registered. The long-term variability of the invasions of alien zoobenthic species into the sea is analyzed. The intensification of invasion of the zoobenthic species into the Black Sea occurs during

Abstract An analysis of the distribution patterns of alien species of macrozoobenthos in the Cheremshansky, Usinsky and Yeruslansky bays of the reservoirs of the Middle and Lower Volga basins is presented. It is revealed that only the most invasively active species (representatives of amphipods, mysids, and bivalve mollusks) successfully settled in the bays. Unlike the reservoirs of the Volga cascade

Abstract The article presents the results of the studies of the features of alien macrophyte species invasions in the hydrographic network of the Middle Dnieper region. At present, these alien species have become a significant component of the overgrown zone in the aquatic ecosystems. Regional peculiarities of ecology, biotopic affiliation, and ecological coenotic strategy of alien species have been

Abstract The paper provides information on the distribution of coltsfoot (Tussilago farfara L.) in the south of Primorsky Territory (the Russian Far East). It is established that, in the study area, the species is massively found along the roadsides and inhabits anthropogenic landscapes (gardens, abandoned fields, wastelands in cities and towns), and a single case of introduction into the forest biocenosis

Abstract For the first time, two alien species of beetles, obligate synanthropes, namely, Attagenus smirnovi Zhantiev, 1973 (Dermestidae) and Lasioderma serricorne (Fabricius, 1792) (Ptinidae), were revealed in anthills (genus Formica). These records widen the spectrum of biotopes inhabited by these species outside their native ranges and specify their adaptive abilities under the movement of invaders

Abstract A review on ecology, biology, and distribution of pea weevil and its main food plant, Pisum sativum, and the influence of abiotic, biotic and anthropogenic factors on the invasive process and phytosanitary condition of pea crops in Russia is presented. The main stages and areas of cultivation of pea and invasion of pea weevil from their primary habitat in Western Asia are traced. The factors

Abstract The aim of the study is to assess concentrations of compounds of biogenic elements (nitrates, nitrites, ammonium, and phosphates) and to analyze their distribution in water bodies and watercourses of the forest-steppe, where beavers were reintroduced recently. The study was carried out in the State Nature Reserve Privolzhskaya Lesostep’ (Penza oblast). We studied beaver ponds, oxbows inhabited

Abstract The frost resistance of Sosnowsky’s hogweed plants (Heracleum sosnowsky Manden.) has been evaluated under laboratory and field conditions. The death of seedlings and adult plants observed within a temperature range from –6 to –12°C indicates low frost tolerance of the species. A snow cover provides a stable soil temperature (no less than –3°С) at the depth of renewal bud location and, therefore

Abstract The analysis of the distribution of nemoral diurnal butterflies of the Apatura genus (Lepidoptera, Nymphalidae) and weather conditions in the Transbaikal region has revealed relationships which shed light on the underlying causes of penetration of these butterflies far inside Siberia in the last decades. For all Apatura species, the temperature is the factor which determines their normal habitation

Abstract The main limiting factors for living of Ambrosia artemisiifolia L. in the Caucasus are the incoming solar energy flux in January (5250–5950 kJ m–2 day–1) and slope (0°–17.5°). The limiting factors for A. trifida L. are wind speed in February (2–2.4 m/s) and the incoming solar energy flux in December (4400–4800 kJ m–2 day–1). In accordance with the predicted trends of climate change by 2050

Abstract Naturalization of woody lianas poses a great danger to the ravine and floodplain forests of Rostov oblast. Therefore, the aim of the work was to study morphology, ecological and biological properties, and the invasive process of Partenocissus inserta. Studies were carried out in the Botanical Garden of the Southern Federal University and in the west of Rostov oblast in a floodplain oak forest

Abstract A review of original and published data on invasions of sibling species of Microtus from the group “arvalis” (East European vole, M. rossiaemeridionalis; common vole, M. arvalis; and Altai vole, M. obscurus) is given. Two stages of invasions differing in duration are established. These stages defined the formation of the modern ranges of these species and had an influence on evolutionary processes

Abstract The first data on the parasites of the great cormorant (Phalacrocorax carbo) from the coast of Lake Ladoga are obtained. The parasite fauna of the great cormorant consists of five species: Cestoda (2 species), Trematoda (2 species), and Nematoda (1 species). Four species (Petasiger phalacrocoracis (Yamaguti, 1939), Petasiger radiatus (Dujardin, 1845), Paradilepis scolecina (Rudolphi, 1819)

Abstract Predatory gastropod mollusk Rapana venosa (Valenciennes, 1846) was brought from the Sea of Japan to the Black Sea; it has spread in lots of areas of the World Ocean. The article presents a description of the karyotype in embryonic cells. There are 70 chromosomes in rapa whelk karyotype belonging to the following three morphological groups: metacentric (32), submetacentric (36), and subtelocentric

Abstract The American rotifer Kellicottia bostoniensis (Rousselet, 1908) has been found in the Vygozersky Reservoir, which is currently its northernmost habitat in Russia. The Vygozersky Reservoir is located at 63° N and belongs to the White Sea catchment basin. It is a part of the White Sea–Baltic Canal. The first single individual of K. bostoniensis was noted in July 2007. In the summer of 2011,

Abstract The data on the finding of Eustrongylides excisus in the Rybinsk Reservoir (Yaroslavl oblast, Russia) are presented. Larvae-IV were recorded in 2015 in ruff. The appearance of this nematode in the reservoir is associated with the expansion of the range of cormorant, its main definitive host. E. excisus is one more parasite species exhibiting northward expansion in the Volga Basin.

Abstract Passive downstream migration of juvenile fish associated with the invasive water hyacinth (Eichhornia crassipes) was investigated in the delta of the Mekong River. The behavioral program of juveniles aimed at leaving the coastal attached vegetation and entering the transit flow for migration was the same in the case with drifting water hyacinth. In general, the passive downstream migration

Abstract The hybrid origin of the Bidens × decipiens species, which was earlier ascribed to the North American alien species B. connata, was confirmed by analyzing the nucleotide sequences of the ITS nuclear site. The name “B. connata” is indicated as invalid for a taxon that does not grow in North America. Earlier, we tested the hypothesis of hybrid origin of B. × decipiens using ISSR analysis and

Abstract The paper provides data on the invasion of alien species belonging to the Brassicaceae Burnett family into the plant communities of saline ecotopes in Southeastern Europe, including the data on the extent of their participation in the formation of cenoses, their distribution, and ecological characteristics of the species habitats. Only three representatives of the family were described in

Abstract New data on the structure of seedlings, juvenile, immature, virginal, and generative individuals of invasive species Ambrosia artemisiifolia L. and A. trifida L. and the time of their transition to different age stages in Moscow and Moscow oblast have been obtained. These data can help in recognition of plants at different stages of their ontogenesis in nature and in their timely control.

Abstract Zooplankton was studied in August 2015–2017 in eight reservoirs of the Volga River, in an unregulated part of the river between the cities of Volgograd and Astrakhan, and in three reservoirs of the Kama River. The Ponto-Caspian species were recorded in the Volga River downstream of the city of Kazan (south of 55°32′ N) and in the Kama River from the mouth to the upper reaches of the Kama Reservoir

Abstract Alien species of amphipods were registered in Belarus in the early 2000s. Over many years of observing the structure of the riverine macrozoobenthos community, a decrease in the frequency of occurrence of indigenous amphipod species in the southern part of Belarus was noted. In order to find an explanation of the current process, a laboratory experiment was conducted to study the predatory

Abstract The results of the herbological analyses of the seed lots of Sinapis alba and Phacelia tanacetifolia received in the trading networks of Tomsk oblast are presented. The species composition of weedy plants which are able to spread by speirochory is revealed. A high degree of weed infestation of green manure seeds, including diaspores of invasive and potentially invasive species (as well as