. "Zimn\u00ED po\u010Detnost dravc\u016F v poln\u00ED krajin\u011B v z\u00E1vislosti na podm\u00EDnk\u00E1ch prost\u0159ed\u00ED: dvacetilet\u00E1 studie"@cs . "Density of raptors in fi eld habitats in winter according to environmental conditions: a twenty-year study"@en . "RIV/61989592:15310/12:33142731!RIV13-MSM-15310___" . . "3"^^ . "15310" . "V\u00FDzkum roz\u0161\u00ED\u0159en\u00ED pt\u00E1k\u016F v zim\u011B stoj\u00ED ve srovn\u00E1n\u00ED s hn\u00EDzdn\u00ED dobou na okraji z\u00E1jmu. Dokonce je \u010Dast\u011Bji studov\u00E1n vliv zimn\u00EDch podm\u00EDnek prost\u0159ed\u00ED, jako dostupnosti potravy nebo pr\u016Fm\u011Brn\u00FDch teplot, na hn\u00EDzd\u00EDc\u00ED ne\u017E na zimuj\u00EDc\u00ED populaci. V t\u00E9to studii, kter\u00E1 byla provedena v r\u00E1mci celost\u00E1tn\u00ED akce, jsme s\u010D\u00EDtali dravce na Prost\u011Bjovsku v pr\u016Fb\u011Bhu dvaceti zim. Nejhojn\u011Bj\u0161\u00EDm dravcem byla k\u00E1n\u011B lesn\u00ED (Buteo buteo), dal\u0161\u00EDm po\u010Detn\u00FDm druhem byla po\u0161tolka obecn\u00E1 (Falco tinnunculus), ostatn\u00ED druhy se objevovaly jen ojedin\u011Ble. Zm\u011Bny po\u010Detnosti jsme tak\u00E9 vzt\u00E1hli k podm\u00EDnk\u00E1m prost\u0159ed\u00ED. Dravci byli po\u010Detn\u011Bj\u0161\u00ED v letech s dostatkem hrabo\u0161\u016F. Neprok\u00E1zali jsme v\u0161ak vliv pr\u016Fm\u011Brn\u00FDch zimn\u00EDch teplot ani sn\u011Bhov\u00E9 pokr\u00FDvky na po\u010Detnosti dravc\u016F. Jedn\u00EDm z d\u016Fvod\u016F by mohla b\u00FDt kompenzace mezi mno\u017Estv\u00EDm dravc\u016F, kte\u0159\u00ED od n\u00E1s v siln\u00FDch zim\u00E1ch t\u00E1hnou na jih a t\u011Bmi p\u0159iletiv\u0161\u00EDmi za stejn\u00FDch podm\u00EDnek ze severn\u00ED Evropy. Na\u0161e z\u00E1v\u011Bry jsou omezeny malou prostorovou \u0161k\u00E1lou, na kter\u00E9 jsme s\u010D\u00EDt\u00E1n\u00ED prov\u00E1d\u011Bli. Zaj\u00EDmav\u00E9 poznatky by mohlo p\u0159in\u00E9st zpracov\u00E1n\u00ED velkoprostorov\u00FDch dat z tohoto celost\u00E1tn\u00EDho projektu s\u010D\u00EDt\u00E1n\u00ED k\u00E1n\u00ED."@cs . . "Tkadlec, Emil" . "Zimn\u00ED po\u010Detnost dravc\u016F v poln\u00ED krajin\u011B v z\u00E1vislosti na podm\u00EDnk\u00E1ch prost\u0159ed\u00ED: dvacetilet\u00E1 studie"@cs . "St\u0159\u00EDtesk\u00FD, Jan" . "Zimn\u00ED po\u010Detnost dravc\u016F v poln\u00ED krajin\u011B v z\u00E1vislosti na podm\u00EDnk\u00E1ch prost\u0159ed\u00ED: dvacetilet\u00E1 studie" . "2"^^ . "Density of raptors in fi eld habitats in winter according to environmental conditions: a twenty-year study"@en . "Zpr\u00E1vy Vlastiv\u011Bdn\u00E9ho muzea v Olomouci" . . "density, environmental conditions, raptors, voles, winter temperatures"@en . "V\u00FDzkum roz\u0161\u00ED\u0159en\u00ED pt\u00E1k\u016F v zim\u011B stoj\u00ED ve srovn\u00E1n\u00ED s hn\u00EDzdn\u00ED dobou na okraji z\u00E1jmu. Dokonce je \u010Dast\u011Bji studov\u00E1n vliv zimn\u00EDch podm\u00EDnek prost\u0159ed\u00ED, jako dostupnosti potravy nebo pr\u016Fm\u011Brn\u00FDch teplot, na hn\u00EDzd\u00EDc\u00ED ne\u017E na zimuj\u00EDc\u00ED populaci. V t\u00E9to studii, kter\u00E1 byla provedena v r\u00E1mci celost\u00E1tn\u00ED akce, jsme s\u010D\u00EDtali dravce na Prost\u011Bjovsku v pr\u016Fb\u011Bhu dvaceti zim. Nejhojn\u011Bj\u0161\u00EDm dravcem byla k\u00E1n\u011B lesn\u00ED (Buteo buteo), dal\u0161\u00EDm po\u010Detn\u00FDm druhem byla po\u0161tolka obecn\u00E1 (Falco tinnunculus), ostatn\u00ED druhy se objevovaly jen ojedin\u011Ble. Zm\u011Bny po\u010Detnosti jsme tak\u00E9 vzt\u00E1hli k podm\u00EDnk\u00E1m prost\u0159ed\u00ED. Dravci byli po\u010Detn\u011Bj\u0161\u00ED v letech s dostatkem hrabo\u0161\u016F. Neprok\u00E1zali jsme v\u0161ak vliv pr\u016Fm\u011Brn\u00FDch zimn\u00EDch teplot ani sn\u011Bhov\u00E9 pokr\u00FDvky na po\u010Detnosti dravc\u016F. Jedn\u00EDm z d\u016Fvod\u016F by mohla b\u00FDt kompenzace mezi mno\u017Estv\u00EDm dravc\u016F, kte\u0159\u00ED od n\u00E1s v siln\u00FDch zim\u00E1ch t\u00E1hnou na jih a t\u011Bmi p\u0159iletiv\u0161\u00EDmi za stejn\u00FDch podm\u00EDnek ze severn\u00ED Evropy. Na\u0161e z\u00E1v\u011Bry jsou omezeny malou prostorovou \u0161k\u00E1lou, na kter\u00E9 jsme s\u010D\u00EDt\u00E1n\u00ED prov\u00E1d\u011Bli. Zaj\u00EDmav\u00E9 poznatky by mohlo p\u0159in\u00E9st zpracov\u00E1n\u00ED velkoprostorov\u00FDch dat z tohoto celost\u00E1tn\u00EDho projektu s\u010D\u00EDt\u00E1n\u00ED k\u00E1n\u00ED." . . "Z(MSM6198959212)" . . "Winter distributions of birds are considerably less studied than those in breeding seasons. Moreover, environmental conditions experienced by birds in winter are more often studied with respect to the breeding biology than to winter distribution of birds. As part of countrywide programme, we counted raptors over 20 consecutive winters. Common buzzard (Buteo buteo) was the most dominant raptor species. The kestrel (Falco tinnunculus) was also abundant but the occurrences of other species were irregular. We also studied effects of environmental conditions on densities of birds of prey. Raptors were more abundant in years with higher density of voles. On the contrary we did not find any relationship between winter temperatures, snow cover and density of raptors. This observation could be explained by an arrival of individuals from north populations in severe winters compensating for departure of our breeding populations to south. Our conclusions are limited by a short spatial scale of this study. Analyses of large-scale data gathered in countrywide programme would be very useful for our understanding of winter distrubution of raptors."@en . "Zimn\u00ED po\u010Detnost dravc\u016F v poln\u00ED krajin\u011B v z\u00E1vislosti na podm\u00EDnk\u00E1ch prost\u0159ed\u00ED: dvacetilet\u00E1 studie" . "CZ - \u010Cesk\u00E1 republika" . "Krist, Milo\u0161" . . "[C45D291C060A]" . "10"^^ . "RIV/61989592:15310/12:33142731" . . . . . . "303" . . "182368" . "1212-1134" . . . . "303" . . . .