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The aim of the study was to compile an inventory and determine the ecological characteristics of the spontaneous flora of the restored water reservoirs and their wet banks in the western part of Lublin in the years 1997–2013. The study objects are small reservoirs located at the UMCS Botanical Garden in the Czechówka River valley. These ponds are subjected to strong anthropogenic pressure. 68 plant species from 33 families and 58 genera were recorded in the flora of the ponds and their wet banks. An important feature of the described water bodies is the large proportion of native species (94% of the flora). Cryptophytes and hemicryptophytes as well as biological groups combining the features of hemicryptophytes and cryptophytes are the predominant life forms. Perennials account for 80% of the flora. The ponds and their wet banks are inhabited by 25 medicinal and 19 bee forage plants.
The aim of presented investigation was to determine the composition of scale insects species and intensity of their occurrence on some greenhouse’s ornamental plants. The investigations were carried out in the greenhouse of Maria Curie Skłodowska Botanical Garden in Lublin in years 2002–2004. Eight species belonging to seven botanical families were observed: Abutilon striatum cv. Thomsoni, Cyrtomium falcatum Presl., Dizygotheca elegantissima (Veitch), Hedera helix L., Hypoestes phyllostachya Presl., Nerium oleander L., Passiflora guadrangularia L., Ruscus aculeatus L. The quantitative analysis of the studied material was performed making use of the following ecological indicators: number and density. Identification of the scale insects species was performed on the basis of microscope slides. Three species of the scale insects belonging to three families were observed on ornamental plants: Pseudococcidae [Pseudococcus maritimus (Ehrh.)], Coccidae [Saissetia coffeae (Walker)] and Diaspididae (Aspidiotus nerii Bouchè). The scale insects were noted on all species of studied plants. Observed scale insects are typical polyphagous and all of them are considered as harmful pests in greenhouses. Among scale insects inhabiting this group of plants distinctly numerous on particular host plants were S. coffea and A. nerii. On the studied plants scale insects were stated at four degree of density.
The collection from the years 1947-1967 is described and analysed. 25 species are represented. The majority of records comes from the Lublin region (SE Poland). The most interesting species are thermophilous Sympetrum (S. depressiusculum, S. fonscolombii, S. meridionale, and S. striolatum).
The session was organized by the Institute of Agrophysics of the Polish Academy of Sciences and the Department of Soil Science of the University of Maria Curie-Sklodowska in Lublin. Lublin Scientific Society was the host of the session. Many professor Dobrzanski`s pupils and co-workers from among Lublin and other Polish scientific institutions took part in the Session; his former students, many invited guests and members of the closest family.An exhibition was also organized, which displayed the most important papers, books and other scientific achievements of Professor Dobrzanski.The aim of the session was to present the contribution of Professor Dobrzański to soil science, with special attention to soil physics as well as to the development and strengthening of many Lublin scientific institutions where soil science constitutes the basic scientific activity. Besides His scientific achievements, also his remarkable work as administrator and organiser of two universities in Lublin, i.e. University of Maria Curie-Sktodowska and the Academy of Agriculture, where Professor Dobrzański held the position of the Rector, was commemorated. Also His great efforts to develop the activity of the Polish Academy of Sciences, as its Vice-President and Chairman of the Agricultural and Forestry Section has been underlined. Four papers were devoted to all above mentioned field of activities of Professor Dobrzański. They were presented by his students, today professors in various universities: R. Turski - University of Agriculture in Lublin, S. Uziak - University of Maria Curie-Skłodowska, S. Zawadzki - President of the Agricultural and Forestry Section of the Polish Academy of Sciences, and J.Gliński - Director of the Institute of Agrophysics of the Polish Academy of Sciences. In the discussion many other professors (S. Nawrocki, C. Tarkowski, R. Dębicki, R. Walczak, J. Gawlik, and A.Kusiński) very emotionally stressed the gread and outstanding role of Professor Dobrzański in their life and scientific activity. The final part of the session was continued at the Institute of Agrophysics in Lublin-Felin, which is bearing the name after Professor Dobrzański. Key words: Professor Dobrzański, role in soil science, agrophysics, development of Lublin scientific centre.
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