0170649 - UEK-B 20020015 RIV CZ eng J - Journal Article
Weiter, L. - Heřman, Michal - Sedláček, František - Zemek, František
Potential occurrence of the birch mouse (Sicista betulina) in the Bohemian Forest (Šumava): A geographical information system approach.
Folia zoologica. Roč. 51, č. 1 (2002), s. 133-144. ISSN 0139-7893. E-ISSN 1573-1189
Institutional research plan: CEZ:AV0Z6087904
Keywords : model of occurrence * preferences of ecological factors
Subject RIV: EH - Ecology, Behaviour
Impact factor: 0.234, year: 2002

Based on ecological parameters of 15 localities with birch mouse (Sicista betulina) occurrence a model of its potential distribution in a part of the Bohemian Forest (Šumava) in Czech Republic was set up. The following habitat parameters were included into the model: land cover (6 classes), proximity to next cover type (10 c.), proximity to a stream (5 c.), altitude (7 c.), slope (7 c.), exposition (4 c.). These parameters were derived from the Landsat 5 TM data and from digital elevation model using EASE/PACE software. All raster format data had a 30 m pixel size and all geographical information system layers were rectified into maps scale 1:25 000, Gauss-Krűger projection. For each of the six parameters two histograms were calculated. The first one displayed the frequency of a membership of a pixel to a class under a mask of the whole study area and the second histogram under a mask of the area of the birch mouse occurrence. The birch mouse preferred: the closest proximity to a stream (0-60 m), flat terrain (slope  5), north-eastern and south-eastern expositions, the altitude between 700-900 m a.s.l., unmanaged meadows and pastures, boundaries between meadows and pastures resp. meadows and forests. The overall probability of the occurrence calculated according these factors created areas of the most probable occurrence above all along the Moldau river system. This model was successfully verified by pitfall trap collection of the birch mouse in three randomly chosen localities with the highest calculated probability of the occurrence.
Permanent Link: http://hdl.handle.net/11104/0067732