[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.baxim.cz\/co-zpusobuje-masivni-vymirani-druhu\/#Article","mainEntityOfPage":"https:\/\/www.baxim.cz\/co-zpusobuje-masivni-vymirani-druhu\/","headline":"Co zp\u016fsobuje masivn\u00ed vym\u00edr\u00e1n\u00ed druh\u016f","name":"Co zp\u016fsobuje masivn\u00ed vym\u00edr\u00e1n\u00ed druh\u016f","description":"Je pravdou, \u017ee cesta \u017eiv\u00fdch organism\u016f na na\u0161\u00ed planet\u011b nebyla zrovna jednoduch\u00e1. Musely se p\u0159izp\u016fsobovat neust\u00e1le se m\u011bn\u00edc\u00edm podm\u00ednk\u00e1m, a tak nen\u00ed divu, \u017ee b\u011bhem historie do\u0161lo k\u00a0n\u011bkolika velk\u00fdm vym\u00edr\u00e1n\u00edm, kdy b\u011bhem kr\u00e1tk\u00e9 doby vyhynula v\u011bt\u0161ina tehdej\u0161\u00edch druh\u016f. Z\u00a0nich je samoz\u0159ejm\u011b nejzn\u00e1m\u011bj\u0161\u00ed vyhynut\u00ed dinosaur\u016f, av\u0161ak nen\u00ed ani zdaleka jedin\u00e9. \u00a0 Prvn\u00ed takov\u00e1 ud\u00e1lost se stala...<p class=\"more-link-wrap\"><a href=\"https:\/\/www.baxim.cz\/co-zpusobuje-masivni-vymirani-druhu\/\" class=\"more-link\">P\u0159e\u010d\u00edst<span class=\"screen-reader-text\"> &ldquo;Co zp\u016fsobuje masivn\u00ed vym\u00edr\u00e1n\u00ed druh\u016f&rdquo;<\/span> &raquo;<\/a><\/p>","datePublished":"2023-01-06","dateModified":"2023-06-07","author":{"@type":"Person","@id":"https:\/\/www.baxim.cz\/author\/#Person","name":"","url":"https:\/\/www.baxim.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/8ee00db67df6a380981db2e33f97d2fa79637c4880a83f2a0ac4c29b5bb179e1?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/8ee00db67df6a380981db2e33f97d2fa79637c4880a83f2a0ac4c29b5bb179e1?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"baxim.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.baxim.cz\/wp-content\/uploads\/vymirani1.jpg","url":"https:\/\/www.baxim.cz\/wp-content\/uploads\/vymirani1.jpg","height":0,"width":0},"url":"https:\/\/www.baxim.cz\/co-zpusobuje-masivni-vymirani-druhu\/","about":["V\u011bda"],"wordCount":430,"articleBody":"Je pravdou, \u017ee cesta \u017eiv\u00fdch organism\u016f na na\u0161\u00ed planet\u011b nebyla zrovna jednoduch\u00e1. Musely se p\u0159izp\u016fsobovat neust\u00e1le se m\u011bn\u00edc\u00edm podm\u00ednk\u00e1m, a tak nen\u00ed divu, \u017ee b\u011bhem historie do\u0161lo k\u00a0n\u011bkolika velk\u00fdm vym\u00edr\u00e1n\u00edm, kdy b\u011bhem kr\u00e1tk\u00e9 doby vyhynula v\u011bt\u0161ina tehdej\u0161\u00edch druh\u016f. Z\u00a0nich je samoz\u0159ejm\u011b nejzn\u00e1m\u011bj\u0161\u00ed vyhynut\u00ed dinosaur\u016f, av\u0161ak nen\u00ed ani zdaleka jedin\u00e9.\u00a0Prvn\u00ed takov\u00e1 ud\u00e1lost se stala ji\u017e v\u00a0prvohor\u00e1ch, kr\u00e1tce pot\u00e9, co se \u017eivot velmi rychle rozvinul do mnoha druh\u016f v\u00a0obdob\u00ed zn\u00e1m\u00e9m jako \u201ekambrick\u00e1 exploze\u201c. Hned o jedno obdob\u00ed d\u00e1l, v\u00a0Permu, v\u0161ak v\u011bt\u0161ina tvor\u016f vyhynula. Jak je to mo\u017en\u00e9?\u00a0\u00a0P\u0159\u00ed\u010dinou byl, jakkoliv se n\u00e1m to dnes m\u016f\u017ee zd\u00e1t zvl\u00e1\u0161tn\u00ed, kysl\u00edk. Vzhledem k\u00a0jeho n\u00edzk\u00e9mu obsahu ve vzduchu jej tyto prvn\u00ed organismy nepot\u0159ebovaly, a byl pro n\u011b dokonce jedovat\u00fd. S\u00a0n\u00e1stupem fotosynt\u00e9zy p\u0159edev\u0161\u00edm v\u00a0podob\u011b \u0159as se v\u0161ak jeho koncentrace v\u00a0ovzdu\u0161\u00ed a pozd\u011bji i ve vod\u011b za\u010dala prudce zvy\u0161ovat. To vedlo k\u00a0tomu, \u017ee v\u011bt\u0161ina organism\u016f se v\u00a0podstat\u011b otr\u00e1vila. Ty, kter\u00e9 p\u0159e\u017eily, se nau\u010dily naopak kysl\u00edk vyu\u017e\u00edvat, a\u017e se pro n\u011b stal nezbytn\u00fdm, co\u017e plat\u00ed dodnes.\u00a0Dal\u0161\u00ed vym\u00edr\u00e1n\u00ed pak p\u0159i\u0161lo na konci k\u0159\u00eddy, a bylo zp\u016fsobeno p\u00e1dem asteroidu. Prudk\u00fd n\u00e1raz, spojen\u00fd s\u00a0vyvr\u017een\u00edm velk\u00e9ho mno\u017estv\u00ed prachu do ovzdu\u0161\u00ed, velmi rychle zm\u011bnil klima na cel\u00e9 planet\u011b. To vedlo k\u00a0tomu, \u017ee velmi specializovan\u00e9 organismy, mezi kter\u00e9 se dinosau\u0159i bezpochyby \u0159adili, nedok\u00e1zali p\u0159e\u017e\u00edt. Pouze men\u0161\u00ed druhy se dok\u00e1zaly p\u0159izp\u016fsobit, a dnes je zn\u00e1me jako pt\u00e1ky.\u00a0\u00a0Posledn\u00ed v\u011bt\u0161\u00ed vym\u0159en\u00ed pak nastalo v\u00a0dob\u011b ledov\u00e9, a\u010dkoliv nebylo zdaleka tak drastick\u00e9 jako ta p\u0159edchoz\u00ed dv\u011b. Pom\u011brn\u011b rychl\u00e9 st\u0159\u00edd\u00e1n\u00ed dob ledov\u00fdch a meziledov\u00fdch zp\u016fsobilo vyhynut\u00ed mnoha druh\u016f, mezi nimi\u017e se m\u00e1lem ocitli i lid\u00e9.\u00a0Co v\u0161e maj\u00ed v\u0161echny tyto ud\u00e1losti spole\u010dn\u00e9ho? To, \u017ee se podm\u00ednky na na\u0161\u00ed planet\u011b zm\u011bnily rychleji, ne\u017e se jim v\u011bt\u0161ina organism\u016f dok\u00e1zala p\u0159izp\u016fsobit. A vzhledem k\u00a0tomu, \u017ee n\u011bco takov\u00e9ho se d\u011bje i dnes, v\u00a0souvislosti s\u00a0glob\u00e1ln\u00edmi zm\u011bnami klimatu, je pravd\u011bpodobn\u00e9, \u017ee n\u00e1s \u010dek\u00e1 dal\u0161\u00ed podobn\u00e1 etapa. A to rozhodn\u011b nen\u00ed radostn\u00e1 vyhl\u00eddka.                                                                                                                                                                                                                                                                                                                                                                                                "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Co zp\u016fsobuje masivn\u00ed vym\u00edr\u00e1n\u00ed druh\u016f","item":"https:\/\/www.baxim.cz\/co-zpusobuje-masivni-vymirani-druhu\/#breadcrumbitem"}]}]