Search

Blue spruce (Picea pungens) has been planted in urban greenery as an ornamental tree in central Europe for more than 150 years. We investigated whether this nonnative spruce is a convenient habitat for ladybirds (Coleoptera, Coccinellidae). In 2021 and 2022, adults and larvae were sampled in four towns in Slovakia at monthly intervals throughout the growing season, from April to October. We recorded adults of 27 species and larvae of 11 ladybird species. Conifer specialist ladybird species predominated both in adult and larval communities (adults – 9 species, 85.2% of all individuals; larvae – 7 species, 92.1% of all individuals). Exochomus quadripustulatus and Aphidecta obliterata were the most common in adult (31.8% and 33.5% of all individuals, respectively) and larval (57.5% and 25.1% of all individuals, respectively) communities. The most abundant generalist species was nonnative invasive Harmonia axyridis (adults – 5.6%, larvae – 6.8% of all individuals). Adults and larvae of ladybirds were more abundant on solitary trees than on trees growing in groups. Our results confirmed that blue spruce hosts rich ladybird communities and provides them shelter and food resources.

The capability of a non-native species to withstand adverse weather is indicative of its establishment in a novel area. An unusually cold winter of 2016/2017 that occurred in the West Carpathians of Slovakia and other regions within Europe provided an opportunity to indirectly assess survival of the invasive ambrosia beetle Xylosandrus germanus (Coleoptera: Curculionidae, Scolytinae). We compared trap captures of this species in the year preceding and succeeding the respective cold winter. Ethanol-baited traps were deployed in 24 oak dominated forest stands within the southern and central area from April to August 2016, and again from April to August 2017 to encompass the seasonal flight activity of X. germanus and to get acquainted with temporal changes in the abundance of this species in these two distant areas. Dispersing X. germanus were recorded in all surveyed stands before and after the aforementioned cold winter. Their total seasonal trap captures were lower in the southern area following low winter temperatures, but remained similar in the central area. Our results suggest that X. germanus can withstand adverse winter weather in oak dominated forests of the West Carpathians within altitudes of 171 and 450 m asl. It is likely that minimum winter temperatures will not reduce the establishment or further spread of this successful invader in forests in Central Europe.

The gypsy moth is one of the most serious pests in forests and fruit tree plantations over prevailing parts of the Northern Hemisphere. This work is based on a literature review, and presents history of gypsy moth Lymantria dispar L., observed in Slovak forests within the period 1945–2020. The life cycle, hosts, natural enemies, population dynamics of pests, impact of outbreaks on forests and different management methods used in the past are discussed. Since 1945, there were nine gypsy moth outbreaks in Slovakia. Between 1945 and 2020, a total of 155,034 ha of deciduous forests were touched with varying intensity, representing an average annual damage of 2,040 ha. The strongest outbreak culminated in 2004. Totally 51,479 ha were attacked in the period of 2000–2008. We have found outbreak periods that repeat with frequency of 7.8 ±2.2 years and the average outbreak phase lasts 3.1 ±1.1 years. The period between two subsequent outbreaks seems to be more or less constant and duration of the outbreak phase seems to be gradually shortened during the study period. Several factors influencing the gypsy moth population dynamics in Slovakia are discussed. The role of biological control by using entomopathogenic fungus Entomophaga maimaiga is described.

Understanding of habitat favourability has wide relevance to the invasion biology of alien species. We studied the seasonal dynamics of the alien ladybird Harmonia axyridis (Coleoptera: Coccinellidae) in monoculture Scots pine forest stands in south-west Slovakia, Central Europe, from April 2013 to March 2015. Adult H. axyridis were collected monthly across seven randomly selected pine stands of different ages and canopy closure, from the lower branches of pine trees, and larvae were recorded qualitatively. Adults were recorded all year round, most abundantly in November and least abundantly in February. The relationship between the abundance of H. axyridis and selected forest stand characteristics was modelled using the negative binomial Generalized Additive Model with penalized spline component in month (seasonality) effect, year, canopy closure and age effects and the random effect of forest stand (sample area effect). The abundance of H. axyridis was significantly influenced by the age of stand and seasonality (with month granularity) for both closed and open canopy stands, whereas the effects of canopy closure and sample area were not significant. The bimodal pattern of seasonal dynamics of H. axyridis on Scots pine was common for closed and open canopy stands, with two peaks reflecting the cyclic movement of the species from and to overwintering sites. Harmonia axyridis utilized certain pine stands preferably for foraging during the growing season and certain stands for refuge during winter. The ladybirds were found in highest numbers in the 15 year old closed canopy stand (overwintering site). The occurrence of both adults and larvae in most stands indicated a suitability of Scots pine forest for ladybird breeding. The model of year-round dynamics of H. axyridis has been presented for the first time within the invaded range of the ladybird in Europe.

Adult moths from an ecological group of winter geometrid species look for trees where they copulate and females lay eggs. We investigated how tree trunk and lower branch thickness affects the occurrence of females on trunks and branches and how the density of females and tree trunk thickness affects the occurrence of males on trunks. The research was carried out in a xeric thermophilous oak forest in southern Slovakia (Central Europe) in the winter season 2014–2015. The moths were obtained from Quercus pubescens trees by sticky bands. Three autumn species Operophtera brumata, Erannis defoliaria, Alsophila aceraria and four spring species Agriopis leucophaearia, Agriopis marginaria, Apocheima hispidaria, Phigalia pilosaria were recorded. We have found out that females had not exclusively negative geotactic behaviour as they (except for the rare P. pilosaria) occurred also on lower branches. Tree trunk and lower branch thickness had a positive effect on abundance of females of the three most abundant species (A. leucophaearia, O. brumata, E. defoliaria) on trunks and lower branches. Tree trunk thickness had a positive effect on density of the females of A. leucophaearia on trunks but not on O. brumata and E. defoliaria. The abundance of the males of O. brumata, E. defoliaria and A. leucophaearia on trunks was positively affected by tree trunk thickness and the density of their females.

Many species of ground beetles (Coleoptera: Carabidae) are important predators of seeds. While the consumption of herb seeds has been intensively studied, little attention has been paid to the consumption of seeds of gymnosperm plants. Here, we determined the consumption of seeds of six coniferous species by four common carabid species and compared carabid preference for conifer and selected common angiosperm weed seed species. In no-choice experiments, the large carabid species Pseudoophonus rufipes preferentially consumed the seeds of Picea abies, Larix decidua and Pinus sylvestris. Pinus sylvestris was also preferred by another large carabid, Pterostichus melanarius. The smaller carabids Harpalus affinis and H. rubripes consumed conifer seeds reluctantly. The intensity of seed consumption by carabids decreased with increasing seed size. In choice experiments, both of the large carabid species preferred the small conifer seeds of P. sylvestris and L. decidua over herb seeds of similar size (Dipsacus fullonum, Galeopsis speciosa, Polygonum lapathifolium). Carabids may prefer conifer seeds because of their soft seed coats, regardless of their chemical protections. Postdispersal predation of seeds by carabids may be an important mortality factor in some conifer species.

There is no doubt that the increasing use of technology and digitalization leads to a more differentiated discussion of the digital transformation in work and daily life. The digital transformation can now be regarded as central technological and social phenomenon (Fürst, 2019). It has triggered a hype. To "be digital" is now the basic requirement for work and the participation in society (Hartmann et al., 2019; Mertala, 2019). To get digital, it is important to keep pace with the social, cultural, and economic changes which are driven by the digital transformation. Educational institutions over all levels of education are concerned with the question of how educational offerings must be designed to prepare learners for encountering and participating in the digital change. This question will also be addressed in this paper. The paper tries to answer the research question, what are central problems and issues of business education due to new and changing qualification and skill requirements of future workers in the age of digital transformation. The aim of the paper is to show what is needed to design modern digital educational offers to prepare learners for the encounter of the digital transformation and to encourage them to participate in shaping it. To achieve this research goal a literature-based analyses was carried out. In addition to central aspects for further development of business education, like the development of educational staff (e.g. teachers) and the vocational theory, it is important to think about issues of digital transformation for the general business education and development, school education and in-company education and training. The bundling of relevant issues on the digital transformation of business Education and their answers will help to shape the digital transformation and prepare the next generation for the future challenges at work and in daily life.

The purpose of this paper is to review the role of software within an ePortfolio (ePF) initiative for students of a five-semester master's program for Business Education and Development. The didactical aim of the ePF initiative presented is to enhance students' ability for (self-)reflection. An accompanying study of the implementation process allows for evaluating the impact of the ePF initiative as well as for the evaluation of its implementation. At six points of time students fill in questionnaires regarding their self-perception of their own competences and their rating of the side conditions of the implementation, leading to 1,925 questionnaires up to September 2018. Results show a positive impact on students' self-perception of their own competences and the perceived importance of self-reflective learning. Regarding the ePF implementation, students generally value the ePF work, especially with regard to the support of their reflection process by an external coach. However, they criticize the time intensity of the reflection process, resulting in the need of a clear communication of the aims of portfolio work to uphold students' motivation. Although the software only represents a side condition in the ePF initiative discussed, students have specifically criticized the software provided -- leading to the conclusion that the software might act as hygiene factor on students' motivation to reflect. From these findings arises the need for further research, which is subject to an interview study among the participants of the ePF initiative being currently in preparation.

Serotonergic agonist psilocybin is a psychedelic with antidepressant potential. Sleep may interact with psilocybin's antidepressant properties like other antidepressant drugs via induction of neuroplasticity. The main aim of the study was to evaluate the effect of psilocybin on sleep architecture on the night after psilocybin administration. Regarding the potential antidepressant properties, we hypothesized that psilocybin, similar to other classical antidepressants, would reduce rapid eye movement (REM) sleep and prolong REM sleep latency. Moreover, we also hypothesized that psilocybin would promote slow-wave activity (SWA) expression in the first sleep cycle, a marker of sleep-related neuroplasticity. Twenty healthy volunteers (10 women, age 28-53) underwent two drug administration sessions, psilocybin or placebo, in a randomized, double-blinded design. Changes in sleep macrostructure, SWA during the first sleep cycle, whole night EEG spectral power across frequencies in non-rapid eye movement (NREM) and REM sleep, and changes in subjective sleep measures were analyzed. The results revealed prolonged REM sleep latency after psilocybin administration and a trend toward a decrease in overall REM sleep duration. No changes in NREM sleep were observed. Psilocybin did not affect EEG power spectra in NREM or REM sleep when examined across the whole night. However, psilocybin suppressed SWA in the first sleep cycle. No evidence was found for sleep-related neuroplasticity, however, a different dosage, timing, effect on homeostatic regulation of sleep, or other mechanisms related to antidepressant effects may play a role. Overall, this study suggests that potential antidepressant properties of psilocybin might be related to changes in sleep.

Service Learning is a modern teaching-learning concept, which combines curricular content with supporting charitable organizations. The effects of courses using this concept on the students' competences development has already been described in empirical studies. Within these studies the aspects regarding the instructional design were less emphasized unlike in this paper in which they are focused on. In addition to a conceptual foundation of service-learning and a literature review on the impact of service-learning, two didactic prototypes will be presented in the form of empirical case studies. The focus of this research is to describe the attitudes and perceptions of undergraduate and graduate students attending service-learning courses and which conclusions can be drawn on the instructional design. In this article, the concept of service-learning is understood as a course- and credit-based learning and teaching method (in contrast to community-service), which require a specific instructional design to evolve purposeful and curricular learning connections between the course and service projects outside the course.

A distinct feature of the Austrian education system is its differentiation of programs in vocational education. Among these programs, the dual education system has a long tradition: Students undergo an apprenticeship in a company while also attending a vocational school in part-time. More than other forms of education, this combination of on-the-job training at the work place and instruction in vocational school requires constant adaptation to economic requirements. Against this background, a new instructional approach, so called areas of learning with a focus on competence were introduced in the vocational school Eisenstadt in the year 2010. The introduction of this approach offered an opportunity for comparing it with a "traditional" subject-oriented approach. Results of the comparison will be presented and discussed in this article.

Output orientation in the realm of education has become a requirement for higher education that is now slowly starting to be manifested in its curricula. This raises the question: what competences students are supposed to develop in the course of their studies and how these competences can be developed. In a first step, this article will therefor deal with the notion of competence. The next step involves an analysis of the various approaches to didactics in higher education, which plays an important role in the promotion of students' competency as well as in the design of individual lesson plans and of the curriculum for individual classes as well as for the entire programme. This section will also touch on the interconnection of research and teaching. It will be shown that, due to the specific way in which higher education is organized, any course of studies promotes the development of competences, which might seem, at first sight, beyond the grasp of didactics of higher education. The core of this article will be the introduction of a model which depicts the development of students' competency in the intersection of didactics and organisation of higher education. The development of students' competences is subject to various factors influencing each other. This article does not aim at presenting conclusive results but is intended to spark a productive debate.