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The peatbogs and natural upper sections of streams in national parks in southeastern Poland represent unique study areas for research on freshwater diatom diversity. During studies conducted on diatoms in three Polish national parks, many little-known, very rare, and endangered species were noted. For most of the taxa presented in this article, especially from the Adlafia, Eunotia, and Placogeia genera,...
The aim of this work was to investigate the species diversity of diatoms growing on fallow fields on loose sand. The study site was located in the western part of Pogórska Wola near Tarnów (southern Poland). Samples were collected from fallow land once a month from April to December 2011. 57 diatom taxa from 19 different genera were found. The most numerous genera were Fragilaria (8) and Luticola...
Artykuł prezentuje ocenę skuteczności modeli predykcyjnych, tj. Hołdy, Gajdki i Stosa, Prusak oraz Poznański, z wykorzystaniem zbilansowanej próby badawczej w postaci sprawozdań finansowych. Materiał badawczy składał się wyłącznie z informacji finansowych jednostek gospodarczych skupionych w sektorze leśno-drzewnym. Okres analizy obejmował lata 2003-2012. Podstawową metodą wykorzystaną w badaniu była...
The article describes the accuracy of Altman and Mączyńska predictive models. The research material consisted only of financial economic reports from wood−furniture sector for years 2003−2012. Multiple discriminant analysis (MDA) was the main method applied in the study and which was used for three years in advance before bankruptcy. To evaluate the accuracy of the analysed models, the companies classification...
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