[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.top-top.cz\/zvireci-migrace\/#Article","mainEntityOfPage":"https:\/\/www.top-top.cz\/zvireci-migrace\/","headline":"Zv\u00ed\u0159ec\u00ed migrace","name":"Zv\u00ed\u0159ec\u00ed migrace","description":"Mnoho zv\u00ed\u0159ec\u00edch druh\u016f se p\u0159esouv\u00e1 \u010dasto dlouh\u00e9 kilometry po zem\u011bkouli z r\u016fzn\u00fdch d\u016fvod\u016f. V\u011bdci se sna\u017e\u00ed \u0159adu let mapovat p\u0159\u00ed\u010diny p\u0159esunu druh\u016f. Postupn\u011b...","datePublished":"2018-09-14","dateModified":"2023-04-29","author":{"@type":"Person","@id":"https:\/\/www.top-top.cz\/author\/#Person","name":"top-top.cz\n","url":"https:\/\/www.top-top.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/e4532b7f65738965bbad8697e5bd54c0628af7bffe8d3c856885c44d86978cee?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/e4532b7f65738965bbad8697e5bd54c0628af7bffe8d3c856885c44d86978cee?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"top-top.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.top-top.cz\/wp-content\/uploads\/img_a325580_w1984_t1537516996.jpg","url":"https:\/\/www.top-top.cz\/wp-content\/uploads\/img_a325580_w1984_t1537516996.jpg","height":0,"width":0},"url":"https:\/\/www.top-top.cz\/zvireci-migrace\/","about":["\u017divotn\u00ed styl"],"wordCount":432,"articleBody":"Mnoho zv\u00ed\u0159ec\u00edch druh\u016f se p\u0159esouv\u00e1 \u010dasto dlouh\u00e9 kilometry po zem\u011bkouli z r\u016fzn\u00fdch d\u016fvod\u016f. V\u011bdci se sna\u017e\u00ed \u0159adu let mapovat p\u0159\u00ed\u010diny p\u0159esunu druh\u016f. Postupn\u011b se skl\u00e1daj\u00ed jednotliv\u00e9 kosti\u010dky skl\u00e1da\u010dky a asi n\u00e1s nikdy nep\u0159estanou udivovat nov\u00e9 a nov\u00e9 poznatky v t\u00e9to oblasti.\tJednou z nejzn\u00e1m\u011bj\u0161\u00edch migrac\u00ed jsou ka\u017edoro\u010dn\u00ed cesty mnoha druh\u016f pt\u00e1k\u016f do tepl\u00fdch krajin. Je a\u017e neuv\u011b\u0159iteln\u00e9 kolik kilometr\u016f dok\u00e1\u017e\u00ed vzduchem p\u0159ekonat. Nejzn\u00e1m\u011bj\u0161\u00ed z t\u011bchto pt\u00e1k\u016f, kte\u0159\u00ed hn\u00edzd\u00ed u n\u00e1s, jsou vla\u0161tovky, ji\u0159i\u010dky, ror\u00fdsi a \u010d\u00e1pi. Ka\u017ed\u00fd rok se vydaj\u00ed na cestu do tropick\u00e9 Afriky, aby se vyhnuli nep\u0159\u00edzniv\u00fdm podm\u00ednk\u00e1m v na\u0161ich krajin\u00e1ch v podzimn\u00edm a zimn\u00edm obdob\u00ed. Jakmile se bl\u00ed\u017e\u00ed p\u0159\u00edzniv\u011bj\u0161\u00ed po\u010das\u00ed za\u010d\u00ednaj\u00ed se p\u0159ipravovat na cestu zp\u011bt.\tZaj\u00edmavou zp\u00e1te\u010dn\u00ed cestu vol\u00ed ror\u00fdsi, kte\u0159\u00ed se do Evropy vrac\u00ed p\u0159es Lib\u00e9rii. Ka\u017ed\u00fd rok se zde setk\u00e1v\u00e1 na miliony ror\u00fds\u016f. Zastav\u00ed se na hostinu termit\u016f a pot\u00e9 se rozlet\u00ed do jednotliv\u00fdch \u010d\u00e1st\u00ed Evropy. Jedinci se vrac\u00ed do stejn\u00e9ho hn\u00edzda, ve kter\u00e9m se narodili, co\u017e je tak\u00e9 \u00fa\u017easn\u00e1 zaj\u00edmavost. Ror\u00fdsi dok\u00e1\u017e\u00ed let\u011bt a\u017e 10 m\u011bs\u00edc\u016f bez p\u0159ist\u00e1n\u00ed a t\u00edm se st\u00e1vaj\u00ed rekordmany v d\u00e9lce nep\u0159eru\u0161ovan\u00e9ho letu.\tZ vodn\u00ed \u0159\u00ed\u0161e stoj\u00ed za zm\u00ednku neuv\u011b\u0159iteln\u00fd tah losos\u016f z mo\u0159\u00ed, p\u0159es \u0159eky a\u017e do mal\u00fdch \u0159\u00ed\u010dek, aby se mohli rozmno\u017eit a zajistit tak ide\u00e1ln\u00ed startovn\u00ed podm\u00ednky sv\u00e9mu potomstvu. Je \u00fa\u017easn\u00e9, jak dlouh\u00e9 vzd\u00e1lenosti jsou schopni urazit a co v\u0161e dok\u00e1\u017e\u00ed p\u0159i t\u00e9to cest\u011b p\u0159ekonat. U n\u00e1s se d\u0159\u00edve tak\u00e9 ka\u017edoro\u010dn\u011b objevovali hejna losos\u016f, kte\u0159\u00ed t\u00e1hli \u0159ekou Labe a pokra\u010dovali na Orlici, horn\u00ed Otavu a dal\u0161\u00ed toky. Cestu losos\u016f bohu\u017eel do\u010dasn\u011b ukon\u010dily velk\u00e9 vodn\u00ed stavby. V sou\u010dasnosti se objevuj\u00ed snahy o zp\u0159\u00edstupn\u011bn\u00ed tok\u016f ryb\u00edmi cesti\u010dkami a v\u00fdsadbou pl\u016fdk\u016f lososa v severn\u00edch \u010cech\u00e1ch. Objevuj\u00ed se i prvn\u00ed \u00fasp\u011bchy, n\u011bkolik jedinc\u016f ji\u017e bylo pozorov\u00e1no v \u010desk\u00fdch \u0159ek\u00e1ch.\tDal\u0161\u00ed fascinuj\u00edc\u00ed ud\u00e1lost\u00ed je ka\u017edoro\u010dn\u00ed migrace neskute\u010dn\u00e9ho mno\u017estv\u00ed druh\u016f zv\u00ed\u0159at v Africe. Jde o obrovskou masu jedinc\u016f r\u016fzn\u00fdch druh\u016f, kte\u0159\u00ed se p\u0159esouvaj\u00ed stovky kilometr\u016f hlavn\u011b kv\u016fli potrav\u011b.\u00a0                                                                                                                                                                                                                                                                                                                                                                                         3.7\/5 - (3 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Zv\u00ed\u0159ec\u00ed migrace","item":"https:\/\/www.top-top.cz\/zvireci-migrace\/#breadcrumbitem"}]}]