{"id":36560,"date":"2019-08-30T03:20:23","date_gmt":"2019-08-30T00:20:23","guid":{"rendered":"https:\/\/bilimvegelecek.com.tr\/?p=36560"},"modified":"2019-08-30T01:47:30","modified_gmt":"2019-08-29T22:47:30","slug":"iklim-degisiklikleri-ve-insan-faaliyetleri-mercanlarin-buyume-hizinin-dusmesine-yol-aciyor","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2019\/08\/30\/iklim-degisiklikleri-ve-insan-faaliyetleri-mercanlarin-buyume-hizinin-dusmesine-yol-aciyor","title":{"rendered":"\u0130klim de\u011fi\u015fiklikleri ve insan faaliyetleri, mercanlar\u0131n b\u00fcy\u00fcme h\u0131z\u0131n\u0131n d\u00fc\u015fmesine yol a\u00e7\u0131yor"},"content":{"rendered":"<p>Kuzey Karolina \u00dcniversitesi\u2019nde yap\u0131lan yeni ara\u015ft\u0131rma, d\u00fcnyan\u0131n en b\u00fcy\u00fck ikinci resif sistemi olan Mezoamerikan Bariyer Resifi Sistemi\u2019ndeki deniz mercanlar\u0131n\u0131n b\u00fcy\u00fcme oranlar\u0131na odakland\u0131. K\u0131y\u0131da bulunan mercanlar, tarihsel a\u00e7\u0131dan a\u00e7\u0131k denizlerde bulunan mercanlardan daha \u00e7abuk b\u00fcy\u00fcme kaydederken, a\u00e7\u0131k deniz mercanlar\u0131n\u0131n b\u00fcy\u00fcme oranlar\u0131nda bir de\u011fi\u015fme ya\u015fanmad\u0131. Yine benzer iki k\u0131y\u0131 mercan\u0131 t\u00fcr\u00fcn\u00fcn b\u00fcy\u00fcme oranlar\u0131nda d\u00fc\u015f\u00fc\u015f ya\u015fand\u0131\u011f\u0131 ifade edildi.<\/p>\n<p>Mercan resifleri, d\u00fcnya \u00e7ap\u0131nda milyonlarca insan i\u00e7in gelir kayna\u011f\u0131d\u0131r. Mercanlardaki bu b\u00fcy\u00fcme d\u00fc\u015f\u00fc\u015f\u00fcn\u00fcn temel nedeni ise insan faaliyetleri ve k\u0131y\u0131da bulunan mercanlar\u0131n daha y\u00fcksek stres seviyelerine maruz b\u0131rak\u0131lmalar\u0131 g\u00f6sterilmekte. Bulgular ayr\u0131ca, gelecekte iklim de\u011fi\u015fikliklerinin d\u00fcnya \u00fczerindeki deniz mercanlar\u0131n\u0131n b\u00fcy\u00fcmesini daha da yava\u015flataca\u011f\u0131n\u0131 ortaya koymaktad\u0131r. Kuzey Karolina \u00dcniversitesi\u2019nde deniz bilimleri b\u00f6l\u00fcm\u00fcnde \u00e7al\u0131\u015fma y\u00fcr\u00fcten Justin Baumann, \u201cBu ara\u015ft\u0131rma, mercanlar\u0131n gelecekteki iklim ko\u015fullar\u0131na adapte olup olmayaca\u011f\u0131na odaklan\u0131yor. Mercan resiflerindeki k\u00fc\u00e7\u00fclme, pek \u00e7ok soruyu da i\u00e7erisinde bar\u0131nd\u0131r\u0131yor\u201d dedi ve ekledi: \u201cBu sorular\u0131n yan\u0131tlar\u0131n\u0131 bilmedi\u011fimiz i\u00e7in resifleri dikkatli bir bi\u00e7imde korumam\u0131z \u00f6nem kazan\u0131yor. Belki de b\u00f6ylece iklim de\u011fi\u015fikliklerine uyum sa\u011flayarak hayatta kalman\u0131n en iyi yolunu bulmaya \u00e7al\u0131\u015facaklar.\u201d<\/p>\n<figure id=\"attachment_36562\" aria-describedby=\"caption-attachment-36562\" style=\"width: 300px\" class=\"wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-36562 size-medium\" src=\"https:\/\/bilimvegelecek.com.tr\/wp-content\/uploads\/2019\/08\/106-climatechang-300x180.jpg\" alt=\"\" width=\"300\" height=\"180\" srcset=\"https:\/\/bilimvegelecek.com.tr\/wp-content\/uploads\/2019\/08\/106-climatechang-300x180.jpg 300w, https:\/\/bilimvegelecek.com.tr\/wp-content\/uploads\/2019\/08\/106-climatechang-768x461.jpg 768w, https:\/\/bilimvegelecek.com.tr\/wp-content\/uploads\/2019\/08\/106-climatechang-600x360.jpg 600w, https:\/\/bilimvegelecek.com.tr\/wp-content\/uploads\/2019\/08\/106-climatechang.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-36562\" class=\"wp-caption-text\">\u0130klim de\u011fi\u015fiklikleri ve insan faaliyetleri, gelecekte deniz mercanlar\u0131n\u0131n b\u00fcy\u00fcme h\u0131z\u0131n\u0131 daha da yava\u015flatacak.<\/figcaption><\/figure>\n<p>28 A\u011fustos g\u00fcn\u00fc Global Change Biology&#8217;de yay\u0131nlanan \u00e7al\u0131\u015fmada ekip, b\u00fcy\u00fcme oranlar\u0131 ile mercanlar\u0131 strese sokan belirli olaylar aras\u0131ndaki ili\u015fkiye odakland\u0131. Mercanlar\u0131n kirlenmesi veya okyanus s\u0131cakl\u0131klar\u0131n\u0131n artmas\u0131yla birlikte mercanlar\u0131n a\u011fart\u0131lmas\u0131 ve mercanlar\u0131n i\u00e7inde ya\u015fayan renkli alglerin d\u0131\u015far\u0131 at\u0131lmas\u0131, mercanlarda beyazla\u015fmaya neden olur. Mercan a\u011fartman\u0131n da mercanlardaki b\u00fcy\u00fcmeyi b\u00fcy\u00fck oranda etkiledi\u011fini ifade eden biliminsanlar\u0131, mercan b\u00fcy\u00fcmesini etkileyen en \u00f6nemli durumun toprak ve su kaynakl\u0131 kronik stres oldu\u011funu belirtiyorlar.<\/p>\n<p>Ara\u015ft\u0131rma ekibi, mercan iskeletlerindeki y\u0131ll\u0131k dikey b\u00fcy\u00fcme h\u0131z\u0131n\u0131 g\u00f6zlemlemek i\u00e7in iskeletlerde BT taramalar\u0131 yapt\u0131. Dikey b\u00fcy\u00fcme oranlar\u0131n\u0131n d\u00fc\u015f\u00fck oldu\u011fu resiflerin daha farkl\u0131 ve karma\u015f\u0131k bir yap\u0131ya sahip olmas\u0131 gerekti\u011fini ifade eden biliminsanlar\u0131, mercanlar\u0131n azalmas\u0131n\u0131n k\u0131y\u0131 i\u00e7in daha az koruma alan\u0131 anlam\u0131na geldi\u011fini ifade ediyorlar. Baumann, \u201cK\u0131y\u0131larda yap\u0131la\u015fmaya gidilmesinden kaynaklanan stresi azaltma ve sera gaz\u0131 sal\u0131n\u0131m\u0131n\u0131 d\u00fc\u015f\u00fcrme y\u00f6n\u00fcnde k\u00fcresel eylemler ger\u00e7ekle\u015ftirmemiz gerekmekte. Bu durum, mercan resifleri i\u00e7in s\u00fcrd\u00fcr\u00fclebilir bir gelece\u011fin sa\u011flanmas\u0131 ad\u0131na gereklidir\u201d a\u00e7\u0131klamalar\u0131nda bulundu.<\/p>\n<p><strong>Kaynak:<\/strong> https:\/\/phys.org\/news\/2019-08-climate-human-nearshore-coral-growth.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kuzey Karolina \u00dcniversitesi\u2019nde yap\u0131lan yeni ara\u015ft\u0131rma, d\u00fcnyan\u0131n en b\u00fcy\u00fck ikinci resif sistemi olan Mezoamerikan Bariyer Resifi Sistemi\u2019ndeki deniz mercanlar\u0131n\u0131n b\u00fcy\u00fcme oranlar\u0131na odakland\u0131. K\u0131y\u0131da bulunan mercanlar, tarihsel a\u00e7\u0131dan a\u00e7\u0131k denizlerde bulunan mercanlardan daha \u00e7abuk b\u00fcy\u00fcme kaydederken, a\u00e7\u0131k deniz mercanlar\u0131n\u0131n b\u00fcy\u00fcme oranlar\u0131nda bir de\u011fi\u015fme ya\u015fanmad\u0131. Yine benzer iki k\u0131y\u0131 mercan\u0131 t\u00fcr\u00fcn\u00fcn b\u00fcy\u00fcme oranlar\u0131nda d\u00fc\u015f\u00fc\u015f ya\u015fand\u0131\u011f\u0131 ifade edildi. [&hellip;]<\/p>\n","protected":false},"author":1390,"featured_media":36561,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[5271,4081,984,5270],"class_list":["post-36560","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-iklim-degisikleri","tag-mercan","tag-okyanus","tag-resif"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/36560","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=36560"}],"version-history":[{"count":0,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/36560\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media\/36561"}],"wp:attachment":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media?parent=36560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/categories?post=36560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/tags?post=36560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}