LBICKER 1981 Sept. 23 cont From his hotel he is going for me. He helped me check in & then took my liquid nitrogen tank with him to bring tomorrow to Dzierżanów. Sept. 24 The train arrived in Dzierżanów at 09:45. Until 11:30 talked with group in Population Dept: S. Janowicz, G. Bujalska, Wacek Malinowski & 2 others (both of whom work on Clethrionomys on the island in the Mazurian lakes). None had been to my seminar so I covered it in brief outline. We also talked about "superorganisms" & future directions for ecology. The work on "the island" includes: relating demography & climate & vegetation & also historical aspects of past development (20 years ago they removed all "moorice" from the island to reflect how mice colonizes from the mainland). They also have a monitoring project on Clethrionomys (sorex) & M. campbelli - using questionnaires to tourists. They are interested in documenting the influence of human activity on other species. For 3 years they have recorded 2000 moorice jumps on C. They also have a project on white mice in captivity. At ~11:30 Krzysztof Rapa left a meeting she was attending & we went to Łuże to check 30 live traps set for Microtus oeconomus. This is the lake basin visited on Sept. 6 & 12. She had run the traps several times already. We caught: Microtus oeconomus (larger & darker than arvialis, but still smaller than californicus) - 5; M. arvalis - ~5; P. leucodon