{"id":222,"date":"2023-10-17T20:51:35","date_gmt":"2023-10-17T18:51:35","guid":{"rendered":"https:\/\/nebojsaistdolesa.sk\/?post_type=docs&p=222"},"modified":"2023-10-17T20:51:36","modified_gmt":"2023-10-17T18:51:36","password":"","slug":"plavunorasty","status":"publish","type":"docs","link":"https:\/\/d.r1.wbsprt.com\/nebojsaistdolesa.sk\/docs\/plavunorasty\/","title":{"rendered":"Plav\u00fa\u0148orasty"},"content":{"rendered":"\n

dnes u\u017e pozn\u00e1me len ako byliny, ktor\u00e9 sa vzh\u013eadom ani vzrastom na stromy nepodobaj\u00fa. Mnoh\u00e9 uholn\u00e9 n\u00e1lezisk\u00e1 s\u00fa v\u0161ak tvoren\u00e9 aj touto skupinou cievnat\u00fdch rastl\u00edn z obdobia karb\u00f3nu z pred viac ne\u017e 298 mili\u00f3nmi rokov. Plav\u00fa\u0148orasty spolu s prasli\u010dkami, papra\u010fami, prvosemenn\u00fdmi a nahosemenn\u00fdmi rastlinami tvorili uhlotvorn\u00fd les, ktor\u00fd bol z\u00e1kladn\u00fdm zdrojom energie v obdob\u00ed priemyselnej revol\u00facie a v s\u00fa\u010dasnosti e\u0161te st\u00e1le tvor\u00ed, v niektor\u00fdch krajin\u00e1ch, v\u00fdznamn\u00fd energetick\u00fd zdroj. V\u00fd\u0161ka najvy\u0161\u0161ieho druhu plav\u00fa\u0148orastu Lepidodendron v karb\u00f3ne dosahovala a\u017e \u00b130 metrov, kde drevnat\u00e1 \u010das\u0165 tvorila asi desatinu priemeru kme\u0148a. Cel\u00e1 v\u00e1ha bola preto nesen\u00e1 vonkaj\u0161ou k\u00f4rou. Rast t\u00fdchto stromov bol ve\u013emi r\u00fdchly a \u017eivot kr\u00e1tky, od nieko\u013ek\u00fdch rokov maxim\u00e1lne po p\u00e1r desa\u0165ro\u010d\u00ed.<\/p>\n\n\n\n

Pangea z gr\u00e9\u010dtiny „v\u0161etka krajina“ bol superkontinent, v ktorom sa aj na\u0161e \u00fazemie nach\u00e1dzalo na \u00farovni rovn\u00edku, kde boli ide\u00e1lne podmienky pre uhlotvorn\u00e9 tropick\u00e9 lesy. Obsah oxidu uhli\u010dit\u00e9ho bol v tom \u010dase zhruba na rovnakej \u00farovni ako dnes, ale obsah kysl\u00edku tvoril v atmosf\u00e9re a\u017e 35 %, zatia\u013e \u010do dnes je na \u00farovni 21 %. N\u00e1rast kysl\u00edku je spojovan\u00fd s rozsiahlou koloniz\u00e1ciou fotosyntetizuj\u00facich rastl\u00edn, \u010do malo vplyv aj na \u017eivo\u010d\u00edchy ako bol napr. gigantizmus \u010dl\u00e1nkono\u017ecov. N\u00edzky obsah CO2 a vysok\u00fd obsah kysl\u00edku boli ide\u00e1lnou kombin\u00e1ciou pre vznik doby \u013eadovej.<\/p>\n\n\n\n

#plavunorasty<\/a> #plavune<\/a> #karbon<\/a> #lepidodendron<\/a> #pangea<\/a> #trees<\/a> #strom<\/a> #stromy<\/a> #les<\/a> #lesy<\/a> #nature<\/a> #priroda<\/a><\/p>\n\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

dnes u\u017e pozn\u00e1me len ako byliny, ktor\u00e9 sa vzh\u013eadom ani vzrastom na stromy nepodobaj\u00fa. Mnoh\u00e9 uholn\u00e9 n\u00e1lezisk\u00e1 s\u00fa v\u0161ak tvoren\u00e9 aj touto skupinou cievnat\u00fdch rastl\u00edn z obdobia karb\u00f3nu z pred viac ne\u017e 298 mili\u00f3nmi rokov. Plav\u00fa\u0148orasty spolu s prasli\u010dkami, papra\u010fami, prvosemenn\u00fdmi a nahosemenn\u00fdmi rastlinami tvorili uhlotvorn\u00fd les, ktor\u00fd bol z\u00e1kladn\u00fdm zdrojom energie v obdob\u00ed priemyselnej […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"doc_category":[6],"doc_tag":[],"class_list":["post-222","docs","type-docs","status-publish","hentry","doc_category-listnate-stromy"],"year_month":"2026-10","word_count":266,"total_views":"1","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"abedron","author_nicename":"abedron","author_url":"https:\/\/d.r1.wbsprt.com\/nebojsaistdolesa.sk\/author\/abedron\/"},"doc_category_info":[{"term_name":"Listnat\u00e9 stromy","term_url":"https:\/\/d.r1.wbsprt.com\/nebojsaistdolesa.sk\/docs-category\/listnate-stromy\/"}],"doc_tag_info":[],"yoast_head":"\nPlav\u00fa\u0148orasty - nebojsaistdolesa.sk<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/d.r1.wbsprt.com\/nebojsaistdolesa.sk\/docs\/plavunorasty\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Plav\u00fa\u0148orasty - nebojsaistdolesa.sk\" \/>\n<meta property=\"og:description\" content=\"dnes u\u017e pozn\u00e1me len ako byliny, ktor\u00e9 sa vzh\u013eadom ani vzrastom na stromy nepodobaj\u00fa. 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