\u0130klim de\u011fi\u015fikli\u011fi nedeniyle okyanus s\u0131cakl\u0131klar\u0131 y\u00fckseldik\u00e7e, d\u00fcnya \u00e7ap\u0131ndaki mercan resifleri benzeri g\u00f6r\u00fclmemi\u015f tehditlerle kar\u015f\u0131 kar\u015f\u0131yad\u0131r. Ancak bilim insanlar\u0131, Durusdinium glynnii olarak bilinen \u0131s\u0131ya dayan\u0131kl\u0131 bir alg ile olan simbiyotik ili\u015fkisi sayesinde a\u015f\u0131r\u0131 s\u0131ca\u011fa dayanacak \u015fekilde adapte olmu\u015f bir t\u00fcr olan antler mercan\u0131 \u015feklinde bir umut \u0131\u015f\u0131\u011f\u0131 ke\u015ffettiler.<\/p>\n\n
Mercan resifleri, mercanlar ve algler aras\u0131ndaki kar\u015f\u0131l\u0131kl\u0131 olarak faydal\u0131 bir ili\u015fki nedeniyle geli\u015fir. Algler, fotosentez yoluyla mercanlara temel besin sa\u011flar. Kar\u015f\u0131l\u0131\u011f\u0131nda mercanlar, alglere koruma ve istikrarl\u0131 bir ortam sunar. Ancak y\u00fckselen okyanus s\u0131cakl\u0131klar\u0131 bu hassas dengeyi bozabilir ve mercanlar\u0131n alglerini atmas\u0131na ve sonunda a\u00e7l\u0131ktan \u00f6lmesine neden olabilir. Bu s\u00fcrece mercan beyazlamas\u0131 denir.<\/p>\n\n
Di\u011fer bir\u00e7ok mercan t\u00fcr\u00fcn\u00fcn aksine, antler mercan\u0131, Durusdinium glynnii ile olan ortakl\u0131\u011f\u0131 sayesinde daha y\u00fcksek s\u0131cakl\u0131klara tahamm\u00fcl edecek \u015fekilde adapte olmu\u015ftur. Bu \u0131s\u0131ya dayan\u0131kl\u0131 alg, antler mercan\u0131na yo\u011fun s\u0131ca\u011fa kar\u015f\u0131 koruma sa\u011flar ve \u0131s\u0131nan sularda bile geli\u015fmesine olanak tan\u0131r.<\/p>\n\n
Yap\u0131lan \u00e7al\u0131\u015fmalar, antler mercan\u0131n\u0131n Durusdinium glynnii ile e\u015fle\u015ftirildi\u011finde \u0131s\u0131ya duyarl\u0131 algleri olan mercanlara benzer b\u00fcy\u00fcme oranlar\u0131 g\u00f6sterdi\u011fini ortaya koymu\u015ftur. \u00d6zellikle yaz aylar\u0131nda, \u0131s\u0131ya dayan\u0131kl\u0131 algleri olan antler mercan\u0131, h\u0131zland\u0131r\u0131lm\u0131\u015f bir b\u00fcy\u00fcme ya\u015far ve bu da di\u011fer mercanlarla ayn\u0131 seviyeye gelmesini sa\u011flar. Ayr\u0131ca, her iki e\u015fle\u015fme de kar\u015f\u0131la\u015ft\u0131r\u0131labilir do\u011furganl\u0131k oranlar\u0131 sergiler.<\/p>\n\n
Bilim insanlar\u0131, antler mercan\u0131n\u0131n dayan\u0131kl\u0131l\u0131\u011f\u0131n\u0131 de\u011ferlendirmek i\u00e7in sim\u00fcle edilmi\u015f \u0131s\u0131 dalgas\u0131 deneyleri yapt\u0131lar. Hem \u0131s\u0131ya dayan\u0131kl\u0131 hem de hassas algler i\u00e7eren mercanlar\u0131 y\u00fckseltilmi\u015f su s\u0131cakl\u0131klar\u0131na maruz b\u0131rakt\u0131lar. Sonu\u00e7lar \u00e7arp\u0131c\u0131yd\u0131: \u0131s\u0131ya dayan\u0131kl\u0131 e\u015fle\u015fme enerji \u00fcretiminde herhangi bir d\u00fc\u015f\u00fc\u015f g\u00f6stermezken, hassas e\u015fle\u015fme \u00f6nemli bir metabolik hasar ya\u015fad\u0131. Dahas\u0131, \u0131s\u0131ya dayan\u0131kl\u0131 alg e\u015fle\u015fmesi bu stresli ko\u015fullar alt\u0131nda daha fazla b\u00fcy\u00fcme bile g\u00f6sterdi.<\/p>\n\n
Antler mercan\u0131n\u0131n \u0131s\u0131ya dayan\u0131kl\u0131 yeteneklerinin ke\u015ffi, mercan resifi koruma \u00e7abalar\u0131 i\u00e7in \u00f6nemli etkilere sahiptir. Bu dayan\u0131kl\u0131l\u0131\u011f\u0131n arkas\u0131ndaki mekanizmalar\u0131 anlayarak, bilim insanlar\u0131 y\u00fckselen okyanus s\u0131cakl\u0131klar\u0131na dayanabilecek “s\u00fcper mercanlar” \u00fcretmek i\u00e7in stratejiler geli\u015ftirebilirler.<\/p>\n\n
Bir yakla\u015f\u0131m, vah\u015fi do\u011fada di\u011fer \u0131s\u0131ya dayan\u0131kl\u0131 alg t\u00fcrlerini aramay\u0131 veya bunlar\u0131 laboratuvarda yeti\u015ftirmeyi i\u00e7erir. Bir di\u011fer y\u00f6ntem ise \u0131s\u0131ya dayan\u0131kl\u0131 algleri mercan fidanl\u0131klar\u0131na nakletmektir. Burada mercanlarla yeni simbiyotik ili\u015fkiler kurabilirler.<\/p>\n\n
Ara\u015ft\u0131rmac\u0131lar, a\u015f\u0131r\u0131 s\u0131ca\u011fa uyum sa\u011flam\u0131\u015f di\u011fer mercan pop\u00fclasyonlar\u0131n\u0131n potansiyelini ara\u015ft\u0131r\u0131yorlar. Pasifik’te bir ada \u00fclkesi olan Palau’da bilim insanlar\u0131, y\u00fcksek okyanus s\u0131cakl\u0131klar\u0131na ra\u011fmen geli\u015fen \u0131s\u0131ya dayan\u0131kl\u0131 mercan t\u00fcrlerini tespit ettiler. Bu pop\u00fclasyonlar\u0131 ve simbiyotik ili\u015fkilerini incelemek, mercan resifi koruma \u00e7abalar\u0131 i\u00e7in de\u011ferli bilgiler sa\u011flayabilir.<\/p>\n\n
Is\u0131ya dayan\u0131kl\u0131 mercanlar\u0131n ke\u015ffi, mercan resiflerinin gelece\u011fi i\u00e7in umut verseler de okyanus \u0131s\u0131nmas\u0131n\u0131n temel nedenini, yani iklim de\u011fi\u015fikli\u011fini gidermek \u00e7ok \u00f6nemlidir. Bilim insanlar\u0131, 2070 y\u0131l\u0131ndan sonra bile \u0131s\u0131ya dayan\u0131kl\u0131 mercanlar\u0131n hayatta kalmakta zorlanabilece\u011fi konusunda uyar\u0131yorlar. Bu hayati ekosistemler \u00fczerindeki iklim de\u011fi\u015fikli\u011finin etkilerini azaltmak ve sera gaz\u0131 emisyonlar\u0131n\u0131 azaltmak i\u00e7in acil \u00f6nlem al\u0131nmas\u0131 gerekmektedir.<\/p>","protected":false},"excerpt":{"rendered":"
Antler Mercan\u0131: Is\u0131nan Sularda Bir Umut I\u015f\u0131\u011f\u0131 \u0130klim de\u011fi\u015fikli\u011fi nedeniyle okyanus s\u0131cakl\u0131klar\u0131 y\u00fckseldik\u00e7e, d\u00fcnya \u00e7ap\u0131ndaki mercan resifleri benzeri g\u00f6r\u00fclmemi\u015f tehditlerle kar\u015f\u0131 kar\u015f\u0131yad\u0131r. Ancak bilim insanlar\u0131, Durusdinium glynnii olarak bilinen \u0131s\u0131ya…<\/p>\n","protected":false},"author":6,"featured_media":23519,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[5545,361,5547,5544,34,5548,5549,5546,363,5550,3398,5551],"class_list":["post-2804","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-marine-biology","tag-coral-bleaching","tag-marine-biology","tag-durusdinium-glynnii","tag-antler-coral","tag-climate-change","tag-heat-resistant-algae","tag-heat-tolerant-coral","tag-coral-conservation","tag-coral-reefs","tag-ocean-temperatures","tag-ocean-acidification","tag-symbiotic-relationships"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/2804","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/comments?post=2804"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/2804\/revisions"}],"predecessor-version":[{"id":2805,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/2804\/revisions\/2805"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/media\/23519"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/media?parent=2804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/categories?post=2804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/tags?post=2804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}