"V\u00FDskyt mihule poto\u010Dn\u00ED [Lampetra planeri (BLOCH, 1784)] v Novohradsk\u00FDch hor\u00E1ch." . "Praha" . . . "RIV/60077387:_____/03:62033060!RIV/2004/AV0/A62004/N" . "Praha [CZ]" . . "RIV/60077387:_____/03:62033060" . "V\u00FDskyt mihule poto\u010Dn\u00ED v Novohradsk\u00FDch hor\u00E1ch byl zkoum\u00E1n b\u011Bhem let 1999-2003. Celkem 83 profil\u016F na 22 toc\u00EDch II. a\u017E IV. \u0159\u00E1du bylo proloveno elektrick\u00FDm agreg\u00E1tem. Studovan\u00E1 oblast m\u016F\u017Ee b\u00FDt rozd\u011Blena na t\u0159i povod\u00ED. Byly zji\u0161t\u011Bny v\u00FDznamn\u00E9 rozd\u00EDly mezi jednotliv\u00FDmi povod\u00EDmi ve frekvenci v\u00FDskytu a hustot\u011B populac\u00ED mihule poto\u010Dn\u00ED. Nejvy\u0161\u0161\u00ED frekvence v\u00FDskytu byla v povod\u00ED Stropnice (6 tok\u016F z 8 sledovan\u00FDch, pr\u016Fm\u011Brn\u00E1 abundance 2598 kus\u016F na 1 ha), n\u00E1sledovala Mal\u0161e (4 toky z 8 sledovan\u00FDch, pr\u016Fm\u011Brn\u00E1 abundance 844 kus\u016F na 1 ha). V povod\u00ED \u010Cern\u00E9 byla mihule nalezena ve velmi n\u00EDzk\u00E9 hustot\u011B (28 kus\u016F na 1 ha) pouze v 1 toku ze 6 sledovan\u00FDch. Mihule se podstatn\u011B pod\u00EDlela na abundanc\u00EDch ichtyocen\u00F3z s frekvenc\u00ED v\u00FDskytu nad 50 na 67 sledovan\u00FDch lokalit. V\u00FDznamn\u00FD vztah mezi hustotou populace mihule a pstruha obecn\u00E9ho nebyl nalezen. Vliv extr\u00E9mn\u00EDch povodn\u00ED v roce 2002 na populace mihul\u00ED v Mal\u0161i a Veversk\u00E9m potoce byl nepatrn\u00FD, srovnateln\u00E9 hustoty byly zji\u0161t\u011Bny i v roce 2003." . "51;56" . "Mat\u011Bnov\u00E1, V." . "\u010Cesk\u00E1 zem\u011Bd\u011Blsk\u00E1 univerzita v Praze" . "[A311B2B22EBB]" . "2002-09-04+02:00"^^ . "lamprey populations; abundance; South Bohemia"@en . . . . "V\u00FDskyt mihule poto\u010Dn\u00ED [Lampetra planeri (BLOCH, 1784)] v Novohradsk\u00FDch hor\u00E1ch."@cs . "Sborn\u00EDk refer\u00E1t\u016F z konference s mezin\u00E1rodn\u00ED \u00FA\u010Dast\u00ED \u010Cesk\u00E1 ichtyologick\u00E1 konference /6./." . . "0"^^ . . "2"^^ . "The occurrence of brook lamprey [Lampetra planeri (BLOCH, 1784)] in Novohradsk\u00E9 Mountains (South Bohemia, Czech Republic)."@en . "0"^^ . "V\u00FDskyt mihule poto\u010Dn\u00ED [Lampetra planeri (BLOCH, 1784)] v Novohradsk\u00FDch hor\u00E1ch." . . "80-213-1053-7" . . "1"^^ . . "The occurrence of brook lamprey [Lampetra planeri (BLOCH, 1784)] in Novohradsk\u00E9 Mountains (South Bohemia, Czech Republic)."@en . . "7"^^ . . "634252" . . . "Mat\u011Bna, Josef" . "V\u00FDskyt mihule poto\u010Dn\u00ED [Lampetra planeri (BLOCH, 1784)] v Novohradsk\u00FDch hor\u00E1ch."@cs . "The occurrence of brook lamprey was studied in Novohradsk\u00E9 Mountains during 1999-2003. Altogether 83 profiles on 22 second to fourth order brooks and streams were fished by means of electroshockers. The area investigated can be divided into three basins. Significant differences were found between basins with respect to frequency of occurrence and density of lamprey populations. The highest frequency of occurrence was in the Stropnice River basin (6 streams of 8 investigated, average abundance 2598 inds ha-1), followed by the Mal\u0161e River (4 streams of 8 investigated, average abundance 844 inds ha-1). In the \u010Cern\u00E1 Rivulet basin only in 1 of 6 streams investigated the brook lamprey was found at very low densities - 28 inds ha-1 on average. The lamprey contributed substantially to the whole forming more than 50 in numbers on 67 of localities investigated. No significant relationship was found between the density of lamprey and brown trout populations."@en . "Z(AV0Z6017912)" . .