Monitoring kolónií svišta vrchovského tatranského (Marmota marmota latirostris) v Západných Tatrách – I. úsek (2004) [Monitoring of colonies of Marmota marmota latirostris in the West Tatra Mts. Suivi des colonies de Marmota marmota latirostris dans les monts Tatra Ouest].

Résumé

Results of the second year (2005) of four years lasting research on the occurrence of Marmota marmota latirostris in the Western Tatras Mts. are given in the paper. Coordinates of all found burrows were obtained by high-accurate GPS data mapper Leica GS20. The all coordinates were put into digital maps. The area among Volovec Mt. and Baníkov Mt. was studied. In total 6813 burrows were found in the area. They form 50 colonies (family groups), 48 of them are inhabited and 2 of them are uninhabited. The biggest inhabited colony was formed by 359 burrows, the smallest one was formed by 49 burrows. Horizontal amplitude of the occur- rence of marmots in the studied area is 13300 m and vertical amplitude is 635 m. Both natural and anthropic influences on the occurrence of marmots in the area are discussed.