[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.spars.cz\/co-se-stalo-po-dopadu-asteroidu-ktery-zahubil-dinosaury\/#Article","mainEntityOfPage":"https:\/\/www.spars.cz\/co-se-stalo-po-dopadu-asteroidu-ktery-zahubil-dinosaury\/","headline":"Co se stalo po dopadu asteroidu, kter\u00fd zahubil dinosaury","name":"Co se stalo po dopadu asteroidu, kter\u00fd zahubil dinosaury","description":"Dinosau\u0159i fascinovali lidstvo ji\u017e od sv\u00e9ho objevu. P\u0159edstava obrovit\u00fdch je\u0161t\u011br\u016f, kte\u0159\u00ed byli dominantn\u00edm druhem na na\u0161\u00ed planet\u011b po miliony let,…","datePublished":"2022-06-25","dateModified":"2023-05-02","author":{"@type":"Person","@id":"https:\/\/www.spars.cz\/author\/devene\/#Person","name":"devene","url":"https:\/\/www.spars.cz\/author\/devene\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/b653a05acc9928bc50547a0b6ed51698115bbf59840455a4bc9d337f928ec9d6?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/b653a05acc9928bc50547a0b6ed51698115bbf59840455a4bc9d337f928ec9d6?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"spars.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.spars.cz\/wp-content\/uploads\/dinosaur3.jpg","url":"https:\/\/www.spars.cz\/wp-content\/uploads\/dinosaur3.jpg","height":0,"width":0},"url":"https:\/\/www.spars.cz\/co-se-stalo-po-dopadu-asteroidu-ktery-zahubil-dinosaury\/","about":["V\u011bda"],"wordCount":463,"articleBody":"Dinosau\u0159i fascinovali lidstvo ji\u017e od sv\u00e9ho objevu. P\u0159edstava obrovit\u00fdch je\u0161t\u011br\u016f, kte\u0159\u00ed byli dominantn\u00edm druhem na na\u0161\u00ed planet\u011b po miliony let, zkr\u00e1tka jit\u0159\u00ed na\u0161i fantazii. A tomu samoz\u0159ejm\u011b napom\u00e1h\u00e1 i jejich relativn\u011b rychl\u00fd z\u00e1nik.\u00a0K\u00a0n\u011bmu do\u0161lo podle dne\u0161n\u00edch p\u0159eva\u017euj\u00edc\u00edch teori\u00ed po p\u00e1du meteoritu na americk\u00fd poloostrov Yucat\u00e1n. Jak ale mohl meteorit vyhladit druhy po cel\u00e9 planet\u011b? Jednodu\u0161e proto, \u017ee si jen m\u00e1lokdo dok\u00e1\u017ee p\u0159edstavit n\u00e1sledky, jak\u00e9 takov\u00fdto dopad m\u011bl.\u00a0V\u00a0prvn\u00ed \u0159ad\u011b je nutn\u00e9 si uv\u011bdomit, \u017ee nespadl do mo\u0159e, n\u00fdbr\u017e na pevninu. D\u00edky tomu se zvedla do vzduchu mra\u010dna prachu, podobn\u011b jako tomu je p\u0159i v\u00fdbuchu velk\u00fdch sopek. Jen v\u00a0tomto p\u0159\u00edpad\u011b bylo ono mno\u017estv\u00ed podstatn\u011b v\u011bt\u0161\u00ed.\u00a0Tento prach \u010d\u00e1ste\u010dn\u011b blokoval slune\u010dn\u00ed sv\u011btlo, a t\u00edm p\u00e1dem i fotosynt\u00e9zu. To vedlo k\u00a0tomu, \u017ee se po\u010det rostlin, p\u0159edev\u0161\u00edm t\u011bch velk\u00fdch, zmen\u0161il. D\u00edky tomu bylo m\u00e9n\u011b potravy pro b\u00fdlo\u017eravce, obzvl\u00e1\u0161t\u011b pak pro velk\u00e9 sauropody, jako byl nap\u0159\u00edklad zn\u00e1m\u00fd diplodocus. Ti v\u00a0d\u016fsledku toho za\u010dali vym\u00edrat.\u00a0\u00a0To samoz\u0159ejm\u011b znamenalo tak\u00e9 m\u00e9n\u011b potravy pro velk\u00e9 maso\u017eravce. Ti se sice mohli n\u011bjakou dobu \u017eivit na \u010derstv\u00fdch zdechlin\u00e1ch, av\u0161ak ty tak\u00e9 brzy do\u0161ly. Nakonec tedy hladov\u011bli i oni.\u00a0\u00dabytek potravy v\u0161ak nebyl jedin\u00fdm d\u016fsledkem, kter\u00fd tato katastrofa m\u011bla. Prach z\u00e1rove\u0148 zp\u016fsobil prudk\u00e9 ochlazen\u00ed atmosf\u00e9ry, a a\u010dkoliv dinosau\u0159i byli z\u00a0velk\u00e9 v\u011bt\u0161iny teplokrevn\u00ed a mnoho druh\u016f m\u011blo i proto-pe\u0159\u00ed, kter\u00e9 je chr\u00e1nilo p\u0159ed chladem, n\u00e1hl\u00e1 zima spolu s\u00a0nedostatkem potravy vykonala sv\u00e9.\u00a0\u00a0Znamen\u00e1 to tedy, \u017ee zem\u0159eli skute\u010dn\u011b v\u0161ichni? Nikoliv. Jist\u011b, velk\u00e9 a \u00fazce specializovan\u00e9 druhy byly posti\u017eeny nejv\u00edce, av\u0161ak zdaleka ne v\u0161ichni dinosau\u0159i pat\u0159ili do t\u00e9to kategorie. Byli zde i druhy men\u0161\u00ed, kter\u00e9 byly l\u00e9pe p\u0159izp\u016fsobiv\u00e9. Ty nakonec p\u0159e\u017eily, a na\u0161ly si sv\u00e9 m\u00edsto na slunci. Pouze jim dnes ne\u0159\u00edk\u00e1me dinosau\u0159i, n\u00fdbr\u017e pt\u00e1ci.\u00a0To v\u0161ak nebyli jedin\u00ed p\u0159e\u017eiv\u0161\u00ed. Tak\u00e9 mal\u00ed, drobn\u00ed savci dok\u00e1zali ve zt\u00ed\u017een\u00fdch podm\u00ednk\u00e1ch vydr\u017eet a dokonce i prosperovat. V\u00a0m\u011blk\u00fdch vod\u00e1ch, kter\u00e9 jim poskytovaly \u00fakryt, pak p\u0159e\u017eili nap\u0159\u00edklad krokod\u00fdli, \u017eelvy \u010di v\u00a0mo\u0159\u00edch \u017eraloci.\u00a0Jak je tedy vid\u011bt, \u017eivot se dok\u00e1zal udr\u017eet i navzdory takov\u00e9to krizi. A zd\u00e1 se, \u017ee to tak bude i nad\u00e1le.                                                                                                                                                                                                                                                                                                                                                                                                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