After the first spread of crayfish plague (aphanomycosis) at the end of the nineteenth century, the formerly abundant populations of native crayfish in Poland declined drastically. Analysis of historical data on the occurrence and distribution of crayfish in Poland led to the conclusion that without human intervention the native crayfish species would be at high risk of being made extinct. The ...

Calculation and analysis of annual R-factor local values for 103 stations in Poland were the main aims of this study. Calculations were made by means of single hidden layer perceptron artificial neural network on the base of monthly precipitation totals from years: 1961-1980. For most of the analyzed stations calculated average annual R-factor values were low or moderate, at the range from 50 t...

1 Arctic Centre, University of Groningen, Groningen, Netherlands, 2 FRAM—High North Research Centre for Climate and the Environment, Norwegian Polar Institute, Tromsø, Norway, 3 Arctic Ecology Department, FRAM—High North Research Centre for Climate and the Environment, Norwegian Institute for Nature Research (NINA), Tromsø, Norway, 4 Department of Biology, Norwegian University of Science and Te...

one guinea. The first annual issue of this gigantic undertaking has appeared under the auspices of the Royal Society of London. The branches of science included in this catalogue number seventeen :?Mathematics, Mechanics, Physics, Chemistry, Astronomy, Meteorology, Mineralogy, Geology, Geography, Palaeontology, General Biology, Botany, Zoology, Human Anatomy, Physical Anthropology, Bacteriology...

Department of Zoology, Faculty of Science, Charles University in Prague, Vinicna 7, 128 44 Prague, Czech Republic Department of Anatomy and Physiology of Farm Animals, Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska 13, 370 05 Ceske Budejovice, Czech Republic Department of Tropical Medicine, 1st Faculty of Medicine, Charles University in Prague, Studnickova 7...

Zbigniew Puchała, Łukasz Rudnicki, Karol Życzkowski Institute of Theoretical and Applied Informatics, Polish Academy of Sciences, Bałtycka 5, 44-100 Gliwice, Poland Institute of Physics, Jagiellonian University, ul. Reymonta 4, 30-059 Kraków, Poland Center for Theoretical Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland Freiburg Insitute for Advanced Studies, Alb...

S OF PAPERS Twentieth Annual Albert L. Tester Memorial Symposium, 27-28 April 1995 1 The Albert L. Tester Memorial Symposium is held in honor of Professor Albert L. Tester, who, at the time of his death in 1974, was senior professor of zoology at the University of Hawai'i at Manoa. The faculty and students of the Department of Zoology proposed an annual symposium of student research papers as a...

Valerio Cappellini1,2, Hans-Jürgen Sommers3 and Karol Życzkowski1,4 Centrum Fizyki Teoretycznej, Polska Akademia Nauk, Al. Lotników 32/44, 02-668 Warszawa, Poland 2“Mark Kac” Complex Systems Research Centre, Uniwersytet Jagielloński, ul. Reymonta 4, 30-059 Kraków, Poland 3Fachbereich Physik, Universität Duisburg-Essen, Campus Duisburg, 47048 Duisburg, Germany 4Instytut Fizyki im. Smoluchowskieg...

s of Papers Twenty-eighth Annual Albert L. Tester Memorial Symposium, 16-17 April 2003 1 The Albert L. Tester Memorial Symposium is held in honor of Professor Albert Tester, who, at the time of his death in 1974, was Senior Professor of Zoology at the University of Hawai'i at Manoa. The faculty and students of the Department of Zoology proposed an annual symposium of student research papers as ...

Sami Merilaita, Adrian Vallin, Ullasa Kodandaramaiah, Marina Dimitrova, Suvi Ruuskanen, and Toni Laaksonen Department of Biosciences, Åbo Akademi University, Tykistökatu 6A, FIN-20520 Turku, Finland, Department of Zoology, Stockholm University, SE-10691 Stockholm, Sweden, Department of Biology, Section of Ecology, University of Turku, FI-20014 Turku, Finland, and Finnish Museum of Natural Histo...