rss_2.0Ekológia (Bratislava) FeedSciendo RSS Feed for Ekológia (Bratislava)ógia (Bratislava) Feed of photosynthetic pigments in (Cav.) Trin. ex Steud., L. (All.), L. and L. during the season in the area of the Bardača pond (Republika Srpska)<abstract> <title style='display:none'>Abstract</title> <p>It is known that aquatic macrophytes are an important part of freshwater ecosystems, and that they play a different role in their structure and functioning. Their presence and distribution depends on water temperature and transparency, nutrient content, conductivity, pH, chemical composition and water circulation. Therefore, the goal of our research was to determine the influence and interrelationship of physicochemical parameters of water on the content of photosynthetic pigments in aquatic macrophytes of Lake Necik, in the Ramsar area of Bardača (Republic of Srpska). Content of total chlorophyll (<italic>a</italic> + <italic>b</italic>) during the growing season (June–October) ranged from 0.231 to 1.145 mg g<sup>−1</sup> FW in <italic>Phragmites communis</italic> Trin. ex Steud., from 0.061 to 0.541 mg g<sup>−1</sup> FW in <italic>Salvinia natans</italic> L. (All.), from 0.063 to 0.626 mg g<sup>−1</sup> FW in <italic>Utricularia vulgaris</italic> L. and from 0.063 to 0.443 mg g<sup>−1</sup> FW in <italic>Ceratophyllum demersum</italic> L. Research has shown that floating and submerged macrophytes have a lower ratio of chlorophyll <italic>a</italic>/<italic>b</italic> compared to emergent hydrophytes, which is most likely the result of stress caused by increased light intensity and temperature. Seasonal variations in the content of photosynthetic pigments indicated that the species <italic>Phragmites communis</italic> proved to be more tolerant to the stress caused by the influence of various abiotic factors, while <italic>Salvinia natans</italic> proved to be more sensitive. Spearmon’s correlation coefficient of the physicochemical parameters of water and the concentration of photosynthetic pigments of macrophytes showed a significant influence of certain abiotic factors (temperature, transparency and nutrients) on the content of pigments in the leaves of <italic>Phragmites communis, Salvinia natans</italic>, <italic>Utricularia vulgaris</italic> and <italic>Ceratophyllum demersum</italic> L.</p> </abstract>ARTICLEtrue assessment of nighttime anthropization in the Comoé National Park in Côte d’Ivoira (West Africa)<abstract> <title style='display:none'>Abstract</title> <p>Protected areas play a crucial role in preserving biological diversity, providing ecosystem services, and regulating hydroclimatic processes. However, the environmental balance of these areas is increasingly under threat due to rapid population growth, high demand for natural resources, and the effects of global warming. To address this, sustainable management of protected areas is essential. This study aims to develop a methodology for monitoring and assessing levels of nocturnal anthropogenic aggression in the Comoé National Park (CNP) in Côte d’Ivoire. By using geospatial data from the Day/Night Band of the Visible Infrared Imaging Radiometer Suite (VIIRS/DNB), the study characterizes the nocturnal anthropization of CNP through the use of several indices. First, light reflectance density is used to identify nighttime light emission foci. Second, the lighted area density index (LADI) is employed to understand the nature of nocturnal activities taking place within CNP, as indicated by artificial light at night (ALAN). Finally, the light intensity index (LII) is used to evaluate the degree of influence of nocturnal anthropogenic activities on biodiversity. The study also found important activities through LADI and observed a high level of light pollution in CNP. Ultimately, the findings of this study indicate that there is a significant level of nocturnal anthropization within CNP, highlighting the need for effective management and conservation efforts in the area.</p> </abstract>ARTICLEtrue of flower meadows in an urbanized environment<abstract> <title style='display:none'>Abstract</title> <p>With increasing urbanization, it is necessary to create green infrastructure in cities and urban areas to improve not only the quality of life for residents, but also the health and sustainability of local ecosystems. One effective way to create green spaces is by establishing meadows filled with diverse plant species. These meadows can provide numerous benefits, such as aiding pollinator conservation, improving air and water quality, and increasing biodiversity. Therefore, creating these meadows is an important component of urban ecology. Seven types of flower meadow mixtures from a Czech company were sown in 12 plots within the Hliník Urban Park in Nové Zámky, Slovak Republic. The development of the vegetation and the impact of maintenance management and climatic factors were monitored during the vegetation period of 2021‒2022, and the plots are still being monitored. The results of the flower meadow research in 2021 showed that improper maintenance and insufficient precipitation negatively influenced the vegetation’s development. Grasses were most prevalent during the summer months, while legumes were more common in the spring months. The analysis of the plots revealed that four out of 12 plots were dominated by annuals and grasses, which were the most abundant throughout the entire vegetation period. In 2022, it was observed that grasses were most prevalent in May, legumes in June and July, and annuals occurred sporadically in all plots. Insufficient precipitation and high temperatures in 2022 created unfavorable conditions for the thriving of the flower meadow vegetation, resulting in a high proportion of opportunistic species. Due to the impact of stress factors, the vegetation in the plots dried up.</p> </abstract>ARTICLEtrue and repartition of Odonatofauna in the lotic and lentic waters of the Djurdjura and Soumman regions of Kabylia (North Central Algeria)<abstract> <title style='display:none'>Abstract</title> <p>The aim of this study is to examine the Odonata fauna structure and composition in Kabylia’s wetlands (central north Algeria) by sampling 36 potential sites (16 wadis and 20 water reservoirs) in the two main departments of this region, namely, the Kabylia of Djurdjura (Tizi Ouzou) and the Kabylia of Soummam (Bejaia). This region has one of the most important hydrographic systems in Algeria and a wide range of exceptional wetlands due to its important rainfall regime. A lack of studies, especially in the western part of the region (Tizi Ouzou), prompts a specific inventory and ecological analysis of the Odonata population over a period of 6 months (from April to September 2021). Forty species of Odonata have been recorded in Kabylia, of which <italic>Pyrrhosoma nymphula</italic> represents a new record for Algeria, raising the reference list to 64 species. There are four northern African endemic species and among these, we report on the rediscovery of the critically endangered (EN) <italic>Calopteryx exul</italic> in Algeria, recorded in the 19th century and deemed to have been extinct after an absence of more than a century; <italic>Gomphus lucasii</italic> is assessed as vulnerable (VU) and <italic>Enallagma deserti</italic> and <italic>Platycnemis subdilatata</italic> are judged as least concern (LC).</p> </abstract>ARTICLEtrue between variations in ecological conditions and the dynamics of intra-specific morphological diversity of Asso in Algeria<abstract> <title style='display:none'>Abstract</title> <p>This research work focused on the study of morphological diversity in 270 types of <italic>Artemisia herba-alba,</italic> known as “white wormwood,” from different bioclimatic stages and its relationship with the distribution and adaptation of the species. The phenotypic parameters studied include the aerial vegetative part of the leaves and the flowers. The existing relationships between the ecological conditions and the genetic dynamics expressed by the morphological polymorphism of the populations concerned have been established. Results obtained allowed us to admit that we have two ecotypes in Algeria: the first one has five flowers per capitulum and can be found at the level of the three bioclimatic floors studied; whereas the second one has eight flowers per capitulum occupying only the territories with a Saharan climate. The analysis of variance (ANOVA) and UPGMA dendrogram allowed us to observe a very significant intra- and inter-population morphological polymorphism at the level of each site and between the different sites. This wide variability thus observed for <italic>A. herba-alba</italic> could help research on a large collection of individuals and therefore to choose the most effective ecotypes in order to reintroduce this species in the steppe areas of Algeria.</p> </abstract>ARTICLEtrue and ecology of terrestrial gastropods of the Kabylia region (northern Algeria)<abstract> <title style='display:none'>Abstract</title> <p>The snail and slug fauna of the Kabylia region (Bouira and Tizi-Ouzou) was studied during the years 2018/2019 and 2020/2021, focusing on seven stations belonging to three altitudinal levels (low, middle, and high altitude). A total of 5111 individuals were collected and 29 species were identified, with confirmation of the existence of <italic>Leiostyla anglica</italic> in the Kabylia region. Our results showed that altitude has a significant effect on the distribution and abundance of terrestrial gastropods in the study area – the low-altitude sites had the highest number of species (S = 21), while the high-altitude sites had the lowest species richness (S = 10).</p> </abstract>ARTICLEtrue dynamics and wintering behavior of the black–headed gull at El Mellah lagoon (Northeastern Algeria)<abstract> <title style='display:none'>Abstract</title> <p>The population dynamics and behavior of the black-headed gull of an Algerian coastal wetland, El Mellah lagoon (Lake Mellah), were studied during three consecutive wintering seasons (2018–2021). Maximum numbers of the species were counted in December and January depending on the year. A peak of 536 individuals was recorded in the first half of December 2018, another of 538 individuals in the second half of December 2019, and a final peak of 636 birds in the first half of January 2021. Diurnal activity patterns showed that feeding was the primary behavior, with a mean of 24% for the three seasons. It was followed by sleeping (21%), swimming (19%), preening (18%), and flight (17%). Black-headed gulls appeared to be more active in the morning than at other times of the day.</p> <p>This study attempts to provide recent and unpublished data on the wintering and behavior of the black-headed gull, which remains poorly documented in North Africa and particularly in Algeria, and highlights the patterns of wetland use by these species, which could help to evaluate the importance of certain areas and develop management plans specific to coastal habitats and their avifaunal diversity.</p> </abstract>ARTICLEtrue and enhancement of the coastal area of the wilaya of El Tarf (Algeria): Automatic analysis using computer tools<abstract> <title style='display:none'>Abstract</title> <p>The coastline of El Tarf province, stretching for 90 km, presents a great variety of forms and complex ecosystems that need to be protected. The Coastal Law 02-02 was established to achieve this goal by using geographic information system (GIS) and remote sensing to assess the degree of implementation of this law on the ground. This evaluation highlighted a significant evolution of land use in the coastal zone of El Tarf province over a period of 32 years, from 1990 to 2022. In 1990, the area was predominantly forested (55.08%) with a proportion of agricultural land of 27.26% and a significant portion of wetland areas (17.26%). Over time, the forested area decreased to reach 48.58% in 2022, while agricultural land and urban areas increased. This evolution suggests increasing pressure on natural resources, with potential implications for the environment and biodiversity of the region. Despite the 2002 Coastal Law 02-02s which sets specific provisions for the protection and enhancement of the coastline, it is important to emphasize the importance of sustainable management of natural resources and land use in the region. It is essential to implement measures to protect the fragile ecosystems of the region and ensure the sustainability of natural resource use to preserve the environment and biodiversity of the region for future generations. This analysis could also eventually enable decision-makers to have supporting elements to evolve the law 02.02 with the aim of better preserving the coastal area.</p> </abstract>ARTICLEtrue and seasonal variation of wader community (Aves, Charadriiformes) in the Mekhada Marsh (northeastern Algeria)<abstract> <title style='display:none'>Abstract</title> <p>Our study was conducted between October 2021 and April 2022 at the Mekhada marsh, a wetland of international importance, located in northeastern Algeria. This site hosts large concentrations of waterbirds in winter, including waders. Through this investigation in the region, we proposed to characterise and analyse the population structure of this group of birds, which remains very poorly documented in Algeria. The results obtained indicate the presence of 16 species belonging to three families and nine genera. The maximum number of birds was counted in January 2022 (2417 individuals).</p> <p>The inventoried species showed two phenological statuses (wintering and sedentary breeding). Among these, three are listed on the IUCN Red List as lapwing <italic>Vanellus vanellus</italic>; the others are listed on international bird protection agreements (AEWA, Convention of Migratory Species of Wild Animals [CMS] or are protected by Algerian legislation.</p> <p>The present study gives interesting and unpublished data on a group of birds that has been little investigated in Algeria and on a wetland that, due to its large area and various habitats, remains little or undocumented, particularly in terms of its ornithological richness, which is of great interest.</p> </abstract>ARTICLEtrue to assessing the environmental responsibility of enterprises in the industrial region<abstract> <title style='display:none'>Abstract</title> <p>The purpose of the study is the identification and forecasting of socioecological effects from the implementation of environmental responsibility by industrial enterprises at the local level. The development of methodical approaches and practical recommendations for the organizational and economic support of environmental responsibility to improve social tension in the industrial region is explored. The process of the assessment of the level of environmental responsibility of an industrial enterprise is improved based on the factors of its environmental obligation and environmental initiative. It is proposed to assess the level of environmental responsibility of enterprises not only on the basis of widely used coefficients characterizing the level of pollution, but also taking into account the level of environmental initiative of the enterprises under study, which is expressed mainly through social investments.</p> </abstract>ARTICLEtrue and Evaluation of Vermicomposting Materials<abstract> <title style='display:none'>Abstract</title> <p>The agricultural sector and growing food production needs rely on chemical fertilizers. This initially had positive effects on production, but over the last decade, the negative impacts of overuse have resulted in low crop productivity, increased pest and disease infestation, soil degradation, and consequent adverse effects on environmental parameters. As one of the possibilities in organic farming, we found vermicomposting as the most sustainable practice. For the assembly of vermicomposting, mature cattle manure was utilized in three different combinations with organic material and earthworm inoculations (the household waste, the grass clippings, and mixture). The experiment was set up by random block design in three replications. Analyses of qualitative parameters of the final product showed a pH reaction from neutral to slightly alkaline. The nitrogen compound varied between 2.7% and 2.9% and the organic carbon varied between 45.59% and 47.41%, showing a C/N ratio of 16.7‒16.67. The potassium content varied between 1.1% and 1.2% K<sub>2</sub>O, and the phosphorus content varied from 0.3% to 0.5%. The experiment gave quite good results of vermicomposting of household waste with manure, showing a neutral pH reaction, optimal content of ash and carbon with almost similar and good NPK contents and increased C/N ratio of 16.7, and with satisfying levels of trace elements and the heavy metal content under the limits. This combination of household waste and manure also showed best characterization of humic and fulvic acids in vermicompost, ranging from 1505 to 1778 cm<sup>−1</sup> and from 729 to 998 cm<sup>−1</sup>, respectively. These results indicate that vermicomposting can increase the quality of the final product.</p> </abstract>ARTICLEtrue of Salinity and Drought on the Germination of L. in the Region of Saïda (Western Algerian Steppe)<abstract> <title style='display:none'>Abstract</title> <p>Albardine (<italic>Lygeum spartum</italic> L.) is one of the major native grass species of the semi-arid and arid regions of the Mediterranean basin. In Algeria, it is much more widespread on the high plateaus of southern Oranais. This species occupies an important place in the steppe region because it has many ecological, economic, and fodder interests. The present work aims to study the tolerance of <italic>L. spartum</italic> seeds to water and salt stress, two abiotic factors that affect the physiology of the plant during the germinal stage. The methodology adopted consists of using increasing concentrations under a controlled temperature (15°C) for 21 days of germination. The germination responses of the seeds to different degrees of salt stress induced by NaCl (2, 4, 6, 8, 10 g/l) and water stress induced by polyethylene glycol (PEG;−2, -4, -6, -8, −10 bar), showed that the salt and water stresses retarded the germination rate of <italic>L. spartum</italic> L. seeds and also decreased their percentage during the time of the experiment. However, seeds soaked in distilled water (control) recorded a maximum germination rate of 80%. The results of this study show that <italic>L. spartum</italic> seeds are moderately salt and drought tolerant with a depressive effect on germination rate at a salt concentration of 10g/l and an osmotic pressure of −10 bar.</p> </abstract>ARTICLEtrue Spatiotemporal Survey of Tikjda Forest Dynamics Over A 34-Year Period by Aerial Photographs<abstract> <title style='display:none'>Abstract</title> <p>Obtaining accurate forest cover information and dynamics of land occupation, through time, such as the spatial extent and pattern of disturbance and recovery is essential knowledge and assistance for forest managers and a crucial basis for the protection and conservation of current forest resources. Because most recent researches have focused on forest field survey and monitoring, a land classification containing information on forest cover dynamics is critically needed. Over the last decades, advances in remote sensing technology have enabled an accurate classification of different land covers from several sensors and remotely sensed data. We presently retained Tikjda forest (Djurdjura southerner, Algeria) as a case study to investigate the possibility of aerial photos classification and to analyze the historical dynamics of the area using a change detection analysis of multi-temporal data. To classify the study area’s main cover types, we used photographs collected over a period of 34 years (i.e., from 1983 to 2017). The results revealed that in 2017, Tikjda forest was composed of forest areas (24.1%), degraded areas (49.7%), and barren areas (26.2%). Throughout the investigated period, the analysis revealed a notable increase in barren areas (+9.8%), and degraded areas (+14.4%), While forest areas experienced a significant decrease (−24.2%). Moreover, the results confirm the potential of aerial photographs for an accurate classification of forests.</p> </abstract>ARTICLEtrue Influencing Smallholder Farmers’ Attitudes Towards Integrated Soil Fertility Management: Case Study of the Wanka Watershed, Northwestern Highlands of Ethiopia<abstract> <title style='display:none'>Abstract</title> <p>This paper explores factors influencing smallholder farmers’ attitudes towards integrated soil fertility management (ISFM). ISFM is paramount to improve soil fertility for sustainable agricultural productivity, especially in contexts where smallholder agriculture is an important local livelihood and economic activity, as in many countries of the Global South. Alongside the development and availability of new technologies to enhance soil fertility, smallholder farmers’ attitudes towards these innovations in specific contexts are key to determining the extent and outcomes of their uptake. A better understanding of these is thus essential to inform measures to increase ISFM practices among smallholder farmers.</p> <p>This study aimed to assess farmers’ attitudes towards ISFM and the factors that determined them based on a case study of the Wanka watershed, northwestern Ethiopia, a major cereal-producing area. Using a mixed methods approach, data obtained from a household survey (146 respondents), focus group discussions, and key informant interviews were analyzed using descriptive statistics and a multiple regression model.</p> <p>The findings revealed that the attitudes of smallholder farmers towards ISFM in the study area were generally positive, as they considered ISFM compatible with agronomic principles and important to increase agricultural productivity sustainably. The extent of farmers’ farming experience, the length of time of applying chemical fertilizer, the number of livestock, and the size of plots were found to be significant predictors of attitudes towards ISFM. The study concludes that considering these factors can better inform interventions designed to enhance farmers’ choice of ISFM technologies for improved soil fertility management and sustainable crop production in the study area and other contexts.</p> </abstract>ARTICLEtrue of Agroforestry Practices and their Resilience to Climate Change Adaptation and Mitigation in Sub-Saharan Africa: A Review<abstract> <title style='display:none'>Abstract</title> <p>Agroforestry is seen as a land management technique that can address many of the issues faced by smallholder farmers, such as climate change adaptation and climate change mitigation. Agroforestry helps farmers adapt to extreme weather events, create resilient microclimates for crops and livestock across regions, and help combat climate change. An important role of agroforestry in tackling climate change may be to reduce CO<sub>2</sub> emissions by actively sequestering carbon from the atmosphere. Soil stores the largest carbon stock (77%–92%) in agroforestry systems, with trees, herbaceous plants, and deciduous trees absorbing 7%–22% and 1%, respectively. Smallholder farmers in developing countries not only build resilient agroecological systems that actively absorb carbon, but also revert to more natural production systems that provide better ecological and social functions. By doing so, we can prevent climate change. Agroforestry not only reduces greenhouse gas emissions and improves the resilience of agricultural landscapes, but also can contributes to climate change mitigation and adaptation by promoting species migration to more favorable conditions and carbon sequestration. Climate projections could see production declines in much of sub-Saharan Africa, exacerbating food insecurity among citizens.</p> </abstract>ARTICLEtrue of Flora, Soil, and Biodiversity of Ecosystems in Arid Eastern Moroccan Rangelands<abstract> <title style='display:none'>Abstract</title> <p>Recently, pastoral ecosystem has been strongly studied by naturalists. However, phytoecological research must focus on species richness and enhance these ecosystems. The main objective of this research is to prove that the Moroccan pastoral ecosystem is very rich in terms of soil biodiversity and plant formations. In such areas, some pastoral plants maintain the physicochemical characteristics of soil. The field experiment was based on Braun-Blanquet sampling method with 90 surveys. The vegetation surveys carried out during the spring of the 2014–2018 period showed that there were 30 families, 23 orders, and 99 plant species (47 perennial species and 52 annual or biennial species). Of the 99 species inventoried, 14 species are very rare (RR) (14% of the total flora), six are rare (R), five are suspected rare (R?), three species are extinct or of doubtful presence (??), two are vulnerable (or seem to be), in decline, and could become rare in the short term (V), and one is a suspected very rare taxon (RR?). Investigation of life forms based on Raunkiaer method showed that there were various plants in different life forms. Among them, terophytes (47%) and 2% phanerophytes had the highest and the lowest plant species, respectively. This work led us to discover six species (<italic>Atractylis cancellata</italic>, <italic>Carduus pycnocephalus</italic>, <italic>Scorzonera angustifolia</italic>, <italic>Telephium sphaerospermum</italic>, <italic>Teucrium luteum</italic>, and <italic>Androsace maxima</italic>) and five types of rangeland in eastern Morocco. Chorology results showed a high proportion of Mediterranean biogeographic species in the study area, with a percentage of 35%. North African species followed the Mediterranean, with 14%. Euro-Mediterranean species constituted the major flora in the arid regions and played a significant role in the Mediterranean rangelands with 8%. The percentage of North African and Eurasian species was 6%, followed by North African and Asian species forming 4% of the total species. Eurasian, Paleo temperate, and Mediterranean Asian species had the same percentage (3%). The remains represented a low percentage, but contributed to the diversity and the richness of phytogeographic potential in the rangelands of eastern Morocco.</p> </abstract>ARTICLEtrue Scientometric Macroanalysis of Coral Reef Research in the World<abstract> <title style='display:none'>Abstract</title> <p>Marine and coastal biodiversity is crucial to the planet’s functioning and offers ecosystem services that guarantee the health, wealth, and well-being of the entire humanity. This is why, evaluating the current body of research on coral reefs is essential for understanding the unprecedented growth of this field, which covers many topics including climate change, biotic interactions, bioresources, future bioprospecting, and biodiversity in general. Such an evaluation requires both descriptive summaries and co-citation analyses to understand the expansive nature of this particular research and identify research gaps. Given the importance of the topic and the fact that it is insufficiently addressed, this study fills in a gap regarding coral reefs studies. We analyzed coral reef research published in the Web of Science Core Collection database between 1970 and 2021, using the CiteSpace software. This gave a total of 20,362 records, focusing on variables including the list of contributors (author, affiliation, and country), total publications over time, dual map overlay, co-citation analysis (co-cited author and documents), cluster networks, and popular keywords and their burstness. We found that coral reef publications increased over time, with coastal countries (the USA, Australia, and Japan) being among the highest contributors. Researchers from Australia, New Zealand, and the USA are the top producers of coral reef research worldwide. Unsurprisingly, the journal Coral Reefs was the most productive journal. Interestingly, we found that keywords such as “great barrier reef,” “climate change,” and “predation” were among the top cited and most influential in coral reef science. To our knowledge, this is the first study to identify trends in coral reef research using scientometric analyses based on the CiteSpace software.</p> </abstract>ARTICLEtrue of Seed Processing by Flying Foxes and the Patas Monkey on the Germination Success of the African Ebony ()<abstract> <title style='display:none'>Abstract</title> <p>Animals deliver an important ecosystem service by dispersing plant seeds. Seed dispersers have different effects on the germination success of seeds. This study aimed at examining the effect of seed processing by the patas monkey (<italic>Erythrocebus patas</italic>) and two flying foxes (<italic>Micropteropus pusillus</italic> and <italic>Epomophorus gambianus</italic>) on the germination success of African ebony (<italic>Diospyros mespiliformis</italic>). Flying foxes and patas monkeys were kept in cages and fed <italic>ad libitum</italic> with African ebony fruits. Seeds processed were collected, measured, and germinated. Seeds processed by monkeys and flying foxes were compared to control seeds which were removed by hand from fruits. Our results showed that the patas monkey and flying foxes preferably processed smaller seeds. Flying foxes improved the germination success from 6.67 to 72.5%. They also reduced the mean germination time up to 5 days. The patas monkey also improved the germination success from 6.67 to 52.5% and reduced the mean germination time up to 4 days. The effect of flying foxes and the patas monkey on the seed germination and its implication for the African ebony plantation dynamic should be explained to communities for their conservation.</p> </abstract>ARTICLEtrue Current Distribution of the Coypu () in Záhorie Region (Slovakia)<abstract> <title style='display:none'>Abstract</title> <p>Since its introduction in the 19th century, the coypu was able to spread and colonise numerous parts of Europe. Our research focused mainly on the topic of the spatiotemporal distribution of an invasive rodent, <italic>Myocastor coypus</italic> (Molina, 1782), in selected sites of Záhorie region. The study took place in three phases – 2016/2017, 2018/2019 and 2020/2021/2022. It was carried out through two research methods – photo traps and tracking rafts on eight study locations of Záhorie region. From all the positive registrations of this invasive species, we generated a map representation of their spatial distribution and compared it with older data. In the course of the study, the coypu was found in all 14 study areas. Moreover, we describe the process of coypu expansion on the water course Stupavský potok. During our research, we managed to describe the interactions between the coypu and the Eurasian beaver and we documented the first case of coypu predation on unionid mussels in Slovakia. We hope that this study will help in our efforts to mitigate the negative impact of coypu and to prevent its further spread.</p> </abstract>ARTICLEtrue and Coenotic Features of Hayne and its Distribution in Ukraine<abstract> <title style='display:none'>Abstract</title> <p>Ecological analysis of the existing phytocoenological relevés was carried out, including the new localities of <italic>Thesium ebracteatum</italic> Hayne in the Middle Dnipro region. To study the coenotic features, the ratio of diagnostic species of different classes of vegetation in the communities was found. In the western part of the area, including the territory of Ukraine, this species grows in psamophytic communities, the basis of which is species of the <italic>Trifolio-Geranietea sanguinei</italic> class. In the eastern part of the area, including the territory of the Russian Federation, the species grows in steppe communities with a predominance of species of the <italic>Festuco-Brometea</italic> class. The analysis of ecological features of the species using the method of phytoindication showed the two clusters with the biggest differences by the acidity indicator. In the central part of Ukraine and in Europe, this species grows on soils with a higher acidity. On the contrary, in the eastern part of the area (territory of the Russian Federation), it mostly occurs on carbonate-enriched soils with low acidity. The growth of <italic>T. ebracteatum</italic> on more acidic soils in the western areas should be explained by a more humid climate.</p> </abstract>ARTICLEtrue