Leszek Grüm

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A unified model of social organization, spatial distribution, and demographic parameters in the bank vole was developed. It is based on social relations among females, among males and also between reproductive females and males. In the model, social status and reproductive condition of an individual depend exclusively on interactions with its nearest(More)
A population of yellow-necked mice, Apodemus flavicollis, inhabiting Crabapple Island (NE Poland) was sampled from 1994–2002. The catch-mark-release method was applied. Sexually mature males and females (including pregnant ones) as well as immatures of each sex were identified. During the study period 3,036 mice were caught 10,672 times. The number of mice(More)
The investigations on spatial co-occurrence between Myodes (Clethrionomys) glareolus and Apodemus flavicollis conducted on Crabapple Island (NE Poland) in 1994 through 1999 reveal that: single mature females of both species often occur in the same places, whereas local groups of such females rarely cohabit the same place. Mature males of these species(More)
Samples of small rodent populations inhabiting Crabapple Island on Beldany Lake in NE Poland revealed that Clethrionomys glareolus was continously present there, whereas Apodemus flavicollis and Microtus agrestis appeared, stayed for some period, vanished and reappeared. It appears that sexually mature females of the bank vole are strictly territorial,(More)
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