{"id":2728,"date":"2024-11-20T14:30:11","date_gmt":"2024-11-20T13:30:11","guid":{"rendered":"https:\/\/zachrankarase.cz\/?p=2728"},"modified":"2024-11-25T13:14:33","modified_gmt":"2024-11-25T12:14:33","slug":"uprava-rybnika-v-ceskych-budejovicich-pro-chov-karase-obecneho","status":"publish","type":"post","link":"https:\/\/zachrankarase.cz\/de\/uprava-rybnika-v-ceskych-budejovicich-pro-chov-karase-obecneho\/","title":{"rendered":"\u00daprava rybn\u00edka v\u00a0\u010cesk\u00fdch Bud\u011bjovic\u00edch pro chov karase obecn\u00e9ho"},"content":{"rendered":"

Pro chov karase obecn\u00e9ho n\u00e1m byl sv\u011b\u0159en do p\u00e9\u010de rybn\u00edk v centru m\u011bsta \u010cesk\u00e9 Bud\u011bjovice. Rybn\u00edk je nap\u00e1jen n\u00e1honem z potoka s mo\u017enost\u00ed regulace pr\u016ftoku. Voda v potoce je extr\u00e9mn\u011b \u00fa\u017eivn\u00e1 a tato voda prot\u00e9kala rybn\u00edkem, v\u00fdsledkem byly rybn\u00edky zarostl\u00e9 ok\u0159ehkem. S ok\u0159ehkem je velk\u00fd probl\u00e9m, proto\u017ee pod n\u00edm je chladn\u011bj\u0161\u00ed voda bez sv\u011btla, m\u00e1lo kysl\u00edku a jen m\u00e1lo p\u0159irozen\u00e9 potravy ryb a ryby tak rostou pomalu. Karas obecn\u00fd se pod ok\u0159ehkem obvykle ani nevyt\u0159e. N\u011bkolikr\u00e1t jsme zkou\u0161eli ok\u0159ehek odplavit p\u0159es v\u00fdpustn\u00e9 za\u0159\u00edzen\u00ed p\u0159i zv\u00fd\u0161en\u00e9m pr\u016ftoku, to se povedlo, ale do 3 t\u00fddn\u016f ok\u0159ehek zarostl rybn\u00edk zp\u011bt do p\u016fvodn\u00edho stavu. Dal\u0161\u00ed rok na ja\u0159e jsme p\u0159\u00edtok zastavili, \u017e\u00e1dn\u00e1 voda nep\u0159it\u00e9kala ani neodt\u00e9kala. V pr\u016fb\u011bhu jara se ok\u0159ehek znovu prosadil (obr. 1), a tak jsme p\u0159ipravili n\u011bkolik kl\u00e1d, sv\u00e1zali je k sob\u011b a ok\u0159ehek kl\u00e1dami st\u00e1hli k jednomu b\u0159ehu (obr. 2). Ok\u0159ehek jsme sakem odstranili (obr. 3). Ve vod\u011b zbylo tak 1% ok\u0159ehku a to sta\u010dilo k tomu, aby rybn\u00edk zarostl ok\u0159ehkem cel\u00fd znovu b\u011bhem 3 t\u00fddn\u016f. Cel\u00fd postup jsme tedy museli opakovat.<\/p>\n\n\n\n

            D\u00e1le jsme za \u00fa\u010delem likvidace porostu ok\u0159ehku nasadili amury o velikosti 10-12 cm, zbytky ok\u0159ehku jsme pot\u00e9 je\u0161t\u011b odstranili sakem. Od t\u00e9 doby se u\u017e ok\u0159ehek nerozrostl. Brzy po odstran\u011bn\u00ed ok\u0159ehku do\u0161lo k namno\u017een\u00ed \u0159as, potom k masov\u00e9mu namno\u017een\u00ed hrub\u00e9ho zooplanktonu a zv\u00fd\u0161en\u00ed pr\u016fhlednosti vody, a tak p\u0159\u00edr\u016fstky ryb byly velk\u00e9. Do\u0161lo k namno\u017een\u00ed vysazen\u00fdch karas\u016f obecn\u00fdch i slunek obecn\u00fdch. P\u0159\u00edr\u016fstek karase obecn\u00e9ho se pohyboval okolo 12 cm. Karasi vysazen\u00ed v dubnu 2024 m\u011b\u0159ili 8 cm, v z\u00e1\u0159\u00ed 2024 ji\u017e m\u011b\u0159ili 20 cm (obr. 4). U amur\u016f se r\u016fst zv\u011bt\u0161il z p\u016fvodn\u00edch 10 cm (\u010derven 2024) a\u017e na 30 cm (z\u00e1\u0159\u00ed 2024).<\/p>\n\n\n\n

            Proces zar\u016fst\u00e1n\u00ed rybn\u00edka se povedlo zvr\u00e1tit a do\u0161lo tak\u00e9 ke zv\u00fd\u0161en\u00ed biodiverzity. Po odstran\u011bn\u00ed ok\u0159ehku byla pr\u016fhlednost vody okem v\u00edce ne\u017e jeden metr a byly p\u0159\u00edtomny shluky hrub\u00e9ho zooplanktonu. D\u00e1le se ve vod\u011b vyskytovali pulci a spousta larev a dosp\u011blc\u016f vodn\u00edho hmyzu. Tento z\u00e1sah byl tak prosp\u011b\u0161n\u00fd nejen pro karase obecn\u00e9ho a slunku obecnou, ale i pro dal\u0161\u00ed biotu stojat\u00fdch vod.<\/p>\n\n\n\n

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Autor \u010dl\u00e1nku a fotografi\u00ed: Vojt\u011bch Kresl<\/p>","protected":false},"excerpt":{"rendered":"

Pro chov karase obecn\u00e9ho n\u00e1m byl sv\u011b\u0159en do p\u00e9\u010de rybn\u00edk v centru m\u011bsta \u010cesk\u00e9 Bud\u011bjovice. Rybn\u00edk je nap\u00e1jen n\u00e1honem z potoka s mo\u017enost\u00ed regulace pr\u016ftoku. Voda v potoce je extr\u00e9mn\u011b \u00fa\u017eivn\u00e1 a tato voda prot\u00e9kala rybn\u00edkem, v\u00fdsledkem byly rybn\u00edky zarostl\u00e9 ok\u0159ehkem. S ok\u0159ehkem je velk\u00fd probl\u00e9m, proto\u017ee pod n\u00edm je chladn\u011bj\u0161\u00ed voda bez sv\u011btla, m\u00e1lo […]<\/p>\n","protected":false},"author":5,"featured_media":2731,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nezarazene"],"acf":[],"_links":{"self":[{"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/posts\/2728","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/comments?post=2728"}],"version-history":[{"count":2,"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/posts\/2728\/revisions"}],"predecessor-version":[{"id":2734,"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/posts\/2728\/revisions\/2734"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/media\/2731"}],"wp:attachment":[{"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/media?parent=2728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/categories?post=2728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zachrankarase.cz\/de\/wp-json\/wp\/v2\/tags?post=2728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}