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  • Author: Paweł Próchnicki x
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Open access

Dan Wołkowycki and Paweł Próchnicki

Abstract

The object of the study is the distribution and spatial pattern of black cherry Padus serotina Ehrh. population and the impact of landscape structure on the expansion of this alien species in the suburban zone of the city, where the land-use has rapidly been transforming recently. The population of black cherry expands centrifugally, spreading from fringes of the city to outer zones of the agglomeration with more agricultural character. Individuals of P. serotina are distributed in clusters in this area. The maximum observed population density reaches 371/ha (mean 11.3/ha for colonized plots). The main factor influencing the landscape invasibility is cessation of agriculture. Although the first sources of spread of P. serotina are localities in forests, where 46% of the total number of individuals are concentrated, nevertheless, the largest group of juveniles (48%) was found on abandoned farmlands. Over 90% of all youngest individuals were recorded at a distance of up to 100 m from older ones. Chances of isolated occurrence are small and the probability of the colonization is strongly dependent on the occupation of adjacent areas by the species. Black cherry disperses, primarily, according to a spatial pattern of phalanxes, by occupying areas immediately adjacent to places previously colonized and then filling the available habitats. Long-distance dispersal seems to play a minor role for its expansion. Autocorrelation and diffusion models of spread should be taken into account in preventing further expansion of black cherry and planning conservation measures in natural protected areas.

Open access

Żaneta Brudkowska, Katarzyna Jusiak, Michał Próchnicki, Beata Gołębiowska, Justyna Morylowska-Topolska, Ewelina Dziwota, Paweł Pawełczak and Hanna Karakuła-Juchnowicz

Abstract

The number of diagnoses of Autism Spectrum Disorders (ASD) is on the rise, which encourages the search for their causes spurs researchers to study co-occurrence of ASD with other diseases and disorders. This study aims at highlighting the importance of the clinical problem of autism spectrum disorders and its comorbidity with epilepsy. This is one of the most common co-morbidities happening to children.

Regarding the psychopathological symptoms, it needs emphasizing that both in case of an isolated ASD and epilepsy itself, the accompanying psychiatric symptoms are confirmed. The research conducted so far also shows that in the course of epilepsy in the child / youth, mental health problems are often revealed, particularly depression and anxiety disorders. Episodes of depression and anxiety disorders are also mentioned as the most common comorbid psychopathological symptoms associated with ASD. An accurate and rapid diagnosis of epilepsy can improve the functioning of the child in the family environment and can improve communication skills. It is also important for the overall intellectual and psychological development. Making a correct diagnosis of the problem is equally crucial as choosing the right methods of medical and psychological care. Moreover,, it determines the early use of adequate, safe and effective forms of treatment.