Ot\u00e7ul canl\u0131lar\u0131n evrimi, 252 milyon y\u0131l \u00f6nce d\u00fcnyadaki t\u00fcrlerin y\u00fczde 90\u2019\u0131ndan fazlas\u0131 yok oldu\u011funda hayatta kalan ve ortama adapte olabilen bitkilerle ba\u011flant\u0131l\u0131d\u0131r.<\/p>\n
Bristol \u00dcniversitesi\u2019nden biliminsanlar\u0131, kitlesel yokolu\u015ftan sonra, ot\u00e7ullar\u0131n farkl\u0131 t\u00fcrdeki bitkileri t\u00fcketebilmek i\u00e7in \u00e7e\u015fitlendi\u011fini ve daha sert malzemeleri \u00e7i\u011fneyebilenlerin hayatta kalma a\u00e7\u0131s\u0131ndan en ba\u015far\u0131l\u0131 t\u00fcrler oldu\u011funu ke\u015ffetti.<\/p>\n
T\u00fcm zamanlar\u0131n en b\u00fcy\u00fck kitlesel yokolu\u015funun ard\u0131ndan, 252-201 milyon y\u0131l \u00f6nce Triyas d\u00f6neminde s\u0131f\u0131rdan in\u015fa edilen ekosistemler yeni t\u00fcrlerin \u00f6n\u00fcn\u00fc a\u00e7t\u0131, bir\u00e7ok bitki ve hayvan t\u00fcr\u00fc ortaya \u00e7\u0131kt\u0131. Nature Communications’<\/em>da yay\u0131nlanan \u00e7al\u0131\u015fma, yokolu\u015f sonras\u0131 toparlanman\u0131n karma\u015f\u0131kl\u0131\u011f\u0131na dair yeni bilgileri ortaya \u00e7\u0131kard\u0131.<\/p>\n Makalenin yazarlar\u0131ndan Dr. Suresh Singh, \u201cHerhangi bir ekosistemdeki ana hayvanlar ot\u00e7ul olma e\u011filimindedir ve onlar\u0131n, b\u00fcy\u00fck kitlesel yokolu\u015ftan sonraki \u00e7alkant\u0131l\u0131 zamanlarda dikkate de\u011fer bir \u015fekilde uzmanla\u015ft\u0131klar\u0131n\u0131 g\u00f6rd\u00fck\u201d a\u00e7\u0131klamalar\u0131nda bulundu. \u00c7al\u0131\u015fman\u0131n y\u00fcr\u00fct\u00fcc\u00fcs\u00fc Profes\u00f6r Emily Rayfield, \u201c200 milyon y\u0131l \u00f6nce \u00f6len hayvanlar\u0131n diyetlerini belirlemek spek\u00fclatif bir giri\u015fim gibi g\u00f6r\u00fcnebilir. Fakat y\u00fczlerce fosil \u00e7eneyi \u00f6l\u00e7t\u00fck ve \u015fekillerini canl\u0131 hayvanlardaki formlar\u0131yla kar\u015f\u0131la\u015ft\u0131rd\u0131k. Fosil \u00e7eneler \u00fczerinden, mekanik avantaj ve \u0131s\u0131rma kuvveti gibi temel i\u015flevsel de\u011ferleri tahmin ettik\u201d dedi.<\/p>\n Ara\u015ft\u0131rman\u0131n sonu\u00e7lar\u0131 bu kitlesel yokolu\u015f d\u00f6neminde bitkilerde meydana gelen \u00e7e\u015fitlenmeyi i\u015faret etmekteydi. Esasen otobur evriminin, baz\u0131 bitkilerin \u00e7e\u015fitlenmesi ve kullan\u0131labilirlikleriyle ilgili oldu\u011fu kaydedildi. Dr. Singh, \u201cBu d\u00f6nemdeki \u00f6nemli durum, sert bitki materyalini i\u015fleyebilen, do\u011frama ve \u00e7i\u011fneme i\u00e7in g\u00fc\u00e7l\u00fc \u00e7eneleri olan gruplar\u0131n geni\u015flemesiydi. Bu, \u00f6zellikle yumu\u015fak bitki grubunun daha az yayg\u0131n hale geldi\u011fi ve \u00f6rne\u011fin kuru ortama adapte olmu\u015f kozalakl\u0131 a\u011fa\u00e7lar\u0131n d\u00fcnya \u00e7ap\u0131nda yay\u0131ld\u0131\u011f\u0131 Ge\u00e7 Triyas’taki kuruma ko\u015fullar\u0131n\u0131 yans\u0131t\u0131yor\u201d dedi. Ara\u015ft\u0131rmac\u0131lar\u0131n i\u015faret etti\u011fi durum, belirli ko\u015fullar alt\u0131nda de\u011fi\u015fen, evrimle\u015fen bitkilerin ot\u00e7ul canl\u0131lar\u0131n evrimine etkisini g\u00f6stermektedir.<\/p>\n Profes\u00f6r Mike Benton \u201cBu t\u00fcr bir makroekolojik analiz ekolojik d\u00fczeyde kilit s\u00fcre\u00e7lere \u0131\u015f\u0131k tutuyor, neden baz\u0131 gruplar\u0131n \u00f6ld\u00fc\u011f\u00fcn\u00fc veya ba\u015fkalar\u0131n\u0131n yerini ald\u0131\u011f\u0131n\u0131 a\u00e7\u0131klamaya yard\u0131mc\u0131 oluyor\u201d s\u00f6zleriyle projenin \u00f6nemine dikkat \u00e7ekti.<\/p>\n Kaynak:<\/strong> https:\/\/phys.org\/news\/2021-05-herbivores-powerful-jaws-digest-tougher.html<\/p>\n","protected":false},"excerpt":{"rendered":" Ot\u00e7ul canl\u0131lar\u0131n evrimi, 252 milyon y\u0131l \u00f6nce d\u00fcnyadaki t\u00fcrlerin y\u00fczde 90\u2019\u0131ndan fazlas\u0131 yok oldu\u011funda hayatta kalan ve ortama adapte olabilen bitkilerle ba\u011flant\u0131l\u0131d\u0131r. Bristol \u00dcniversitesi\u2019nden biliminsanlar\u0131, kitlesel yokolu\u015ftan sonra, ot\u00e7ullar\u0131n farkl\u0131 t\u00fcrdeki bitkileri t\u00fcketebilmek i\u00e7in \u00e7e\u015fitlendi\u011fini ve daha sert malzemeleri \u00e7i\u011fneyebilenlerin hayatta kalma a\u00e7\u0131s\u0131ndan en ba\u015far\u0131l\u0131 t\u00fcrler oldu\u011funu ke\u015ffetti. T\u00fcm zamanlar\u0131n en b\u00fcy\u00fck kitlesel yokolu\u015funun ard\u0131ndan, […]<\/p>\n","protected":false},"author":1390,"featured_media":50292,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[7690,200,3271,7689],"class_list":["post-50291","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-cene","tag-evrim","tag-kitlesel-yokolus","tag-otcul"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/50291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/users\/1390"}],"replies":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/comments?post=50291"}],"version-history":[{"count":0,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/50291\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media\/50292"}],"wp:attachment":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media?parent=50291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/categories?post=50291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/tags?post=50291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}