{"id":19826,"date":"2018-02-19T11:00:01","date_gmt":"2018-02-19T08:00:01","guid":{"rendered":"https:\/\/bilimvegelecek.com.tr\/?p=19826"},"modified":"2018-02-19T11:46:07","modified_gmt":"2018-02-19T08:46:07","slug":"hayvan-turlerindeki-6-buyuk-yokolusu-insan-mi-yaratiyor-2","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2018\/02\/19\/hayvan-turlerindeki-6-buyuk-yokolusu-insan-mi-yaratiyor-2","title":{"rendered":"Hayvan t\u00fcrlerindeki 6. b\u00fcy\u00fck yokolu\u015fu insan m\u0131 yarat\u0131yor?"},"content":{"rendered":"

Biliminsanlar\u0131 t\u00fcrlerin nesil t\u00fckenme oranlar\u0131n\u0131n, en d\u00fc\u015f\u00fck tahminler bile dikkate al\u0131nd\u0131\u011f\u0131nda, modern d\u00fcnyan\u0131n hayvan t\u00fcrlerindeki alt\u0131nc\u0131 b\u00fcy\u00fck t\u00fckenmeye tan\u0131k oldu\u011fu konusunda uyar\u0131yor. 20. y\u00fcz\u0131lda t\u00fcrlerin nesil t\u00fckenme oran\u0131n\u0131n insan etkisinin olmad\u0131\u011f\u0131 durumun y\u00fcz kat\u0131ndan fazla oldu\u011funu s\u00f6yl\u00fcyorlar.<\/p>\n

Science Advances<\/em> dergisinde yay\u0131mlanan \u00e7al\u0131\u015fman\u0131n yazarlar\u0131, en makul t\u00fckenme oranlar\u0131 analiz edildi\u011finde bile, omurgal\u0131lar\u0131n tamamen yok olma oran\u0131n\u0131n son be\u015f toplu nesil t\u00fckenme olay\u0131ndakinden daha y\u00fcksek oldu\u011funu s\u00f6yl\u00fcyorlar. Meksika Ulusal Otonomi \u00dcniversitesi\u2019nden Dr. Gerardo Ceballos, durumun b\u00fcy\u00fck t\u00fcr kay\u0131plar\u0131 ya\u015fayaca\u011f\u0131m\u0131za i\u015faret etmesinden dolay\u0131 olduk\u00e7a i\u00e7 karart\u0131c\u0131 oldu\u011funu ekliyor. 1900\u2019den beri normal \u015fartlarda beklenen 9 t\u00fcr\u00fcn aksine, 477 omurgal\u0131n\u0131n nesli t\u00fckendi. Ceballos bu durumun alt\u0131nc\u0131 t\u00fckenme evresine girdi\u011fimizi ve bu seferkine insanlar\u0131n sebep oldu\u011funu g\u00f6sterdi\u011fini s\u00f6yl\u00fcyor.<\/p>\n

Ge\u00e7mi\u015f \u00e7al\u0131\u015fmalar da, yap\u0131la\u015fma, tar\u0131m ve kereste gibi ihtiya\u00e7larla do\u011fal \u00e7evreyi kullanan insanlar\u0131n etkisinin t\u00fcrlerin d\u00fcnyan\u0131n 4, 5 milyarl\u0131k ge\u00e7mi\u015finde g\u00f6r\u00fclmemi\u015f h\u0131zda t\u00fckenmesine neden oldu\u011funu g\u00f6stermi\u015fti.<\/p>\n

Ceballos insanl\u0131\u011f\u0131n \u201cn\u00fcfus bombas\u0131n\u0131n\u201d etkileri \u00fczerine uyar\u0131lar\u0131 ile tan\u0131nan Paul R. Ehrlich\u2019in de ortak yazar\u0131 oldu\u011fu \u00e7al\u0131\u015fmas\u0131n\u0131n, do\u011fal veya normal t\u00fckenme oranlar\u0131n\u0131 (\u00e7.n. background extinction rates: \u0130nsanlar\u0131n t\u00fcrlerin yok olmas\u0131n\u0131n birincil nedeni olmas\u0131ndan \u00f6nce yery\u00fcz\u00fcn\u00fcn jeolojik ve biyolojik ge\u00e7mi\u015findeki standart oran) daha iyi kulland\u0131\u011f\u0131n\u0131 ve sadece resmi olarak soyu t\u00fckendi\u011fi a\u00e7\u0131klanan t\u00fcrlere bak\u0131ld\u0131\u011f\u0131n\u0131 s\u00f6yl\u00fcyor.<\/p>\n

Fakat Group on Earth Observations Biodiversity Observation Network Ba\u015fkan\u0131 Prof. Henrique Miguel Pereira yeni makalenin yenilik\u00e7i bir katk\u0131s\u0131 olmad\u0131\u011f\u0131n\u0131 s\u00f6yl\u00fcyor. Pereira \u00e7al\u0131\u015fman\u0131n \u015fimdiki t\u00fckenme oranlar\u0131n\u0131n ge\u00e7mi\u015ftekinden y\u00fcz kat daha fazla oldu\u011funu \u00f6ne s\u00fcrd\u00fc\u011f\u00fcn\u00fc s\u00f6yl\u00fcyor. Bunun s\u00fcreci belgelendirmemizi geli\u015ftirdi\u011fini, ancak hayvanlar\u0131n nesillerindeki alt\u0131nc\u0131 b\u00fcy\u00fck t\u00fckenmeyi do\u011frulamad\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnd\u00fc\u011f\u00fcn\u00fc ekliyor. Pereira bir biyo\u00e7e\u015fitlilik krizi ya\u015fad\u0131\u011f\u0131m\u0131z\u0131 ve mevcut durumun alt\u0131nc\u0131 b\u00fcy\u00fck t\u00fckenme olarak nitelenebilmesi i\u00e7in mevcut t\u00fckenme oranlar\u0131nda h\u0131zl\u0131 bir y\u00fckseli\u015f olmas\u0131 ya da bu oranlarla birka\u00e7 y\u00fczy\u0131l\u0131n ge\u00e7mesi gerekti\u011fini d\u00fc\u015f\u00fcnd\u00fc\u011f\u00fcn\u00fc belirtiyor.<\/p>\n

Ekip yeni analizlerin \u0131\u015f\u0131\u011f\u0131nda t\u00fcrlerin t\u00fckenmesini yava\u015flatmak ve durdurmak i\u00e7in h\u0131zl\u0131 \u00f6nlemlerin al\u0131nmas\u0131 gerekti\u011fini s\u00f6yl\u00fcyorlar. \u0130nsanlar\u0131n t\u00fcrlerin yok olmas\u0131 hususunda neden endi\u015felenmesi gerekti\u011fini ve t\u00fcrlerin yok olmas\u0131n\u0131n, insanlar a\u00e7\u0131s\u0131ndan iyi ya\u015fam standartlar\u0131na sahip olmalar\u0131n\u0131 sa\u011flayan durumu kaybetmek anlam\u0131na geldi\u011fini belirtiyorlar.<\/p>\n","protected":false},"excerpt":{"rendered":"

Biliminsanlar\u0131 t\u00fcrlerin nesil t\u00fckenme oranlar\u0131n\u0131n, en d\u00fc\u015f\u00fck tahminler bile dikkate al\u0131nd\u0131\u011f\u0131nda, modern d\u00fcnyan\u0131n hayvan t\u00fcrlerindeki alt\u0131nc\u0131 b\u00fcy\u00fck t\u00fckenmeye tan\u0131k oldu\u011fu konusunda uyar\u0131yor. 20. y\u00fcz\u0131lda t\u00fcrlerin nesil t\u00fckenme oran\u0131n\u0131n insan etkisinin olmad\u0131\u011f\u0131 durumun y\u00fcz kat\u0131ndan fazla oldu\u011funu s\u00f6yl\u00fcyorlar. Science Advances dergisinde yay\u0131mlanan \u00e7al\u0131\u015fman\u0131n yazarlar\u0131, en makul t\u00fckenme oranlar\u0131 analiz edildi\u011finde bile, omurgal\u0131lar\u0131n tamamen yok olma oran\u0131n\u0131n […]<\/p>\n","protected":false},"author":749,"featured_media":19827,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[174,211,19],"tags":[2378,1848,230],"class_list":["post-19826","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-137-sayi","category-antropoloji","category-bilim-gundemi","tag-buyuk-yokoluslar","tag-canlilik-tarihi","tag-insanlik-tarihi"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t