{"id":389984,"date":"2026-11-04T12:40:14","date_gmt":"2026-11-04T11:40:14","guid":{"rendered":"https:\/\/zakrasnejsivimperk.cz\/?p=389984"},"modified":"2026-11-04T12:40:14","modified_gmt":"2026-11-04T11:40:14","slug":"sumava-chlumsky-rybnik-se-promeni-v-utociste-puvodnich-druhu-ryb","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=389984","title":{"rendered":"\u0160UMAVA: Chlumsk\u00fd rybn\u00edk se prom\u011bn\u00ed v \u00fato\u010di\u0161t\u011b p\u016fvodn\u00edch druh\u016f ryb"},"content":{"rendered":"

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V\u00fdsledky t\u0159\u00edlet\u00e9ho mapov\u00e1n\u00ed ryb \u0160umavy uk\u00e1zaly cestu, jak podpo\u0159it p\u016fvodn\u00ed druhy v dob\u011b klimatick\u00fdch zm\u011bn. Z Chlumsk\u00e9ho rybn\u00edka u Volar v CHKO \u0160umava vznikne vodn\u00ed o\u00e1za pro chr\u00e1n\u011bnou mihuli poto\u010dn\u00ed a \u0161umavskou populaci pstruha obecn\u00e9ho. V\u00fdlov a zm\u011bna ryb\u00ed obs\u00e1dky prob\u011bhnou v listopadu za spolupr\u00e1ce m\u011bsta Volary, \u010cesk\u00e9ho ryb\u00e1\u0159sk\u00e9ho svazu, Spr\u00e1vy N\u00e1rodn\u00edho parku \u0160umava a Biologick\u00e9ho centra Akademie v\u011bd \u010cR.<\/h6>\n

Chlumsk\u00fd rybn\u00edk se 9. listopadu zcela vypust\u00ed. Sou\u010dasn\u00e9 ryby, kter\u00e9 neodpov\u00eddaj\u00ed p\u0159\u00edrodn\u00edm podm\u00ednk\u00e1m \u0160umavy, se odstran\u00ed, a naopak se zde vytvo\u0159\u00ed prostor pro p\u016fvodn\u00ed druhy \u2013 p\u0159edev\u0161\u00edm pstruha obecn\u00e9ho a chr\u00e1n\u011bnou mihuli poto\u010dn\u00ed. Zm\u011bna je jedn\u00edm z v\u00fdsledk\u016f projektu \u017div\u00e9 klenoty pod vodn\u00ed hladinou \u0160umavy, p\u0159i n\u011bm\u017e odborn\u00edci z Biologick\u00e9ho centra AV \u010cR v posledn\u00edch letech podrobn\u011b mapovali v\u00fdskyt a stav ryb\u00edch populac\u00ed na \u0160umav\u011b. Mapov\u00e1n\u00ed uk\u00e1zalo nejen to, kde se p\u016fvodn\u00ed druhy ryb st\u00e1le vyskytuj\u00ed, ale i v jak\u00e9m jsou stavu a jak je mo\u017en\u00e9 jejich populace podpo\u0159it.<\/p>\n

Siln\u00e1 populace mihule poto\u010dn\u00ed se na \u0160umav\u011b vyskytuje v Poleck\u00e9 n\u00e1dr\u017ei nebo v Rybn\u00ed\u010dku u \u010cesk\u00fdch \u017dleb\u016f. P\u016fvodn\u00ed populace pstruha jsou v ledovcov\u00e9m jeze\u0159e Laka nebo bavorsk\u00e9 n\u00e1dr\u017ei Frauenau. \u201eChlumsk\u00fd rybn\u00edk m\u00e1 potenci\u00e1l st\u00e1t se velmi zaj\u00edmav\u00fdm m\u00edstem, proto\u017ee vytvo\u0159\u00ed prost\u0159ed\u00ed pro oba druhy z\u00e1rove\u0148. Nav\u00edc lze p\u0159edpokl\u00e1dat, \u017ee m\u00edsto prosp\u011bje i oboj\u017eiveln\u00edk\u016fm a dal\u0161\u00edm bezobratl\u00fdm \u017eivo\u010dich\u016fm. D\u00edky zm\u011bn\u011b ryb\u00ed obs\u00e1dky se tak\u00e9 zv\u00fd\u0161\u00ed kvalita vody,\u201c<\/em> \u0159\u00edk\u00e1 v\u00fdzkumn\u00edk Petr Blabolil z Biologick\u00e9ho centra AV \u010cR.<\/p>\n

Rybn\u00edk v chladn\u00fdch \u0161umavsk\u00fdch podm\u00ednk\u00e1ch<\/h6>\n

Chlumsk\u00fd rybn\u00edk le\u017e\u00ed v nadmo\u0159sk\u00e9 v\u00fd\u0161ce 750 metr\u016f. V sou\u010dasnosti v n\u011bm \u017eij\u00ed \u0161tika obecn\u00e1, okoun obecn\u00fd, kapr obecn\u00fd, perl\u00edn ostrob\u0159ich\u00fd a tak\u00e9 nep\u016fvodn\u00ed invazn\u00ed karas st\u0159\u00edb\u0159it\u00fd. V chladn\u00e9 a m\u00e1lo \u00fa\u017eivn\u00e9 vod\u011b zde ryby rostou pomalu. V potoce nad rybn\u00edkem p\u0159itom st\u00e1le p\u0159e\u017e\u00edvaj\u00ed p\u016fvodn\u00ed populace chr\u00e1n\u011bn\u00e9 mihule poto\u010dn\u00ed a pstruh\u016f obecn\u00fdch. Jejich \u017eivotn\u00ed podm\u00ednky ale v posledn\u00edch such\u00fdch letech v\u00fdrazn\u011b komplikuj\u00ed n\u00edzk\u00e9 pr\u016ftoky a rostouc\u00ed teploty. Pokud nav\u00edc spluj\u00ed do rybn\u00edka, st\u00e1vaj\u00ed se ko\u0159ist\u00ed \u0161tik a okoun\u016f anebo se sou\u010dasnou ryb\u00ed obs\u00e1dkou bojuj\u00ed o prostor a potravu. Vysok\u00fd pod\u00edl kaprovit\u00fdch ryb v rybn\u00edce nav\u00edc potla\u010duje zooplankton, p\u0159i jeho\u017e nedostatku doch\u00e1z\u00ed k rozvoji \u0159as a sinic, co\u017e v\u00fdrazn\u011b zhor\u0161uje kvalitu vody.<\/p>\n

Prom\u011bna rybn\u00edka bude vy\u017eadovat spolupr\u00e1ci n\u011bkolika organizac\u00ed. Vlastn\u00edk rybn\u00edka, m\u011bsto Volary, zajist\u00ed technickou str\u00e1nku vypu\u0161t\u011bn\u00ed \u2013 vytvo\u0159en\u00ed obtoku lovi\u0161t\u011b pomoc\u00ed syst\u00e9mu trubek a od\u010derp\u00e1n\u00ed zb\u00fdvaj\u00edc\u00ed vody. Rybn\u00edk toti\u017e vzhledem ke sv\u00e9 konstrukci nen\u00ed mo\u017en\u00e9 zcela vypustit. \u010cesk\u00fd ryb\u00e1\u0159sk\u00fd svaz se zapoj\u00ed do odloven\u00ed ryb a n\u00e1sledn\u00fd p\u0159esun do vhodn\u00fdch sportovn\u00edch rev\u00edr\u016f v n\u00ed\u017ee polo\u017een\u00fdch oblastech. Spr\u00e1va N\u00e1rodn\u00edho parku \u0160umava bude dohl\u00ed\u017eet na manipulaci s rybami a sou\u010dasn\u011b kontrolovat p\u0159\u00edpadn\u00e9 dopady v\u00fdlovu na zvl\u00e1\u0161t\u011b chr\u00e1n\u011bn\u00e9 organismy a jejich biotopy. Biologick\u00e9 centrum AV \u010cR bude celou akci koordinovat a zaji\u0161\u0165ovat odborn\u00fd dohled.<\/p>\n

V\u00fdlovem v\u0161ak d\u011bn\u00ed na Chlumsk\u00e9m rybn\u00edce nekon\u010d\u00ed. Po jeho op\u011btovn\u00e9m p\u0159irozen\u00e9m napu\u0161t\u011bn\u00ed m\u00edsto samovoln\u011b obsad\u00ed pstruzi a mihule a na ja\u0159e lze \u010dekat, \u017ee rybn\u00edk u\u017e bude pln\u00fd oboj\u017eiveln\u00edk\u016f. Spole\u010dn\u00e9 \u00fasil\u00ed n\u011bkolika organizac\u00ed tak prom\u011bn\u00ed rybn\u00edk v \u00fato\u010di\u0161t\u011b p\u016fvodn\u00edch druh\u016f v jejich p\u0159irozen\u00fdch podm\u00ednk\u00e1ch a p\u0159isp\u011bje k zachov\u00e1n\u00ed \u0161umavsk\u00e9 biodiverzity.<\/p>\n

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Text a foto: (tz-av\u010dr)<\/strong><\/p>\n

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