Son aylarda San Francisco K\u00f6rfezi b\u00f6lgesinde endi\u015fe verici say\u0131da gri balina \u00f6l\u00fc bulundu. May\u0131s 2023 itibar\u0131yla dokuz gri balina yerel k\u0131y\u0131larda \u00f6l\u00fc bulundu; bu, y\u0131l\u0131n bu zaman\u0131na \u00f6zg\u00fc bir ila \u00fc\u00e7 \u00f6l\u00fcmle kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda \u00f6nemli bir art\u0131\u015f.<\/p>\n\n
Deniz Memelileri Merkezi’ndeki uzmanlar, balinalardan \u00fc\u00e7\u00fcn\u00fcn gemi \u00e7arpmas\u0131 sonucu \u00f6ld\u00fc\u011f\u00fcn\u00fc belirledi. Bir balinan\u0131n \u00f6l\u00fcm nedeni ise hala bilinmiyor. Ancak di\u011fer d\u00f6rt balinada yetersiz beslenme belirtileri g\u00f6r\u00fcld\u00fc ve bu durumun \u00f6l\u00fcmlere katk\u0131da bulunabilece\u011fi d\u00fc\u015f\u00fcn\u00fcl\u00fcyor.<\/p>\n\n
Gri balinalar her y\u0131l Meksika’n\u0131n Baja California b\u00f6lgesinin \u0131l\u0131k sular\u0131ndan Kuzey Pasifik ve Arktik’in besin a\u00e7\u0131s\u0131ndan zengin sular\u0131na g\u00f6\u00e7 ederler. Yaz aylar\u0131nda Arktik’te yo\u011fun bir \u015fekilde beslenirler ve Meksika’ya ve daha so\u011fuk sulara d\u00f6n\u00fc\u015fleri i\u00e7in ya\u011f rezervleri olu\u015ftururlar.<\/p>\n\n
Ancak iklim de\u011fi\u015fikli\u011fi Arktik ekosistemini \u00f6nemli \u00f6l\u00e7\u00fcde etkiliyor. S\u0131cakl\u0131klar\u0131n artmas\u0131 deniz buzullar\u0131n\u0131 eritiyor ve bu da gri balinalar\u0131n geleneksel olarak kabuklular, plankton ve yumu\u015fak\u00e7alarla beslendi\u011fi b\u00f6lgelere daha fazla bal\u0131k g\u00f6\u00e7 ettik\u00e7e besin i\u00e7in rekabeti art\u0131r\u0131yor.<\/p>\n\n
Bilim insanlar\u0131, gri balinalar\u0131n Arktik’te yeterli besin bulmakta zorland\u0131klar\u0131na dair \u00e7e\u015fitli sinyaller g\u00f6zlemledi. Bu ilkbaharda balinalar, kuzeye giderken al\u0131\u015f\u0131lmad\u0131k bir davran\u0131\u015f olan San Francisco K\u00f6rfezi’nde beslenirken g\u00f6r\u00fcld\u00fcler. Bu durum, enerji rezervlerinin t\u00fckenmi\u015f olabilece\u011fini d\u00fc\u015f\u00fcnd\u00fcr\u00fcyor. Ayr\u0131ca, gemi \u00e7arpmas\u0131 s\u0131kl\u0131\u011f\u0131ndaki art\u0131\u015f, balinalar\u0131n besin bulmak i\u00e7in k\u0131y\u0131ya yakla\u015ft\u0131\u011f\u0131n\u0131 g\u00f6sterebilir.<\/p>\n\n
Gri balinalar\u0131n ola\u011fan d\u0131\u015f\u0131 bir \u00f6l\u00fcm vakas\u0131 ya\u015famas\u0131 bu ilk de\u011fil. 1999-2000 y\u0131llar\u0131 aras\u0131nda, Kuzey Amerika’n\u0131n bat\u0131 k\u0131y\u0131s\u0131 boyunca 600’den fazla gri balina \u00f6ld\u00fc. Bu toplu \u00f6l\u00fcm\u00fcn nedeni hala bilinmiyor ancak a\u00e7l\u0131\u011f\u0131n bir rol oynad\u0131\u011f\u0131 d\u00fc\u015f\u00fcn\u00fcl\u00fcyor.<\/p>\n\n
Bu y\u0131l gri balina \u00f6l\u00fcmlerinin say\u0131s\u0131 \u00f6nceki \u00f6l\u00fcm vakas\u0131ndaki kadar y\u00fcksek olmasa da uzmanlar e\u011filimin devam edebilece\u011finden endi\u015fe ediyor. UC Davis Veterinerlik Fak\u00fcltesi ara\u015ft\u0131rma g\u00f6revlisi Frances Gulland, mevcut oran devam ederse sezon sonuna kadar 70 kadar gri balinan\u0131n \u00f6l\u00fc bulunabilece\u011fini tahmin ediyor.<\/p>\n\n
Gri balinalar\u0131n kayb\u0131 deniz ekosistemi \u00fczerinde \u00f6nemli etkilere sahip. Gri balinalar besin zincirinin \u00f6nemli bir par\u00e7as\u0131d\u0131r ve yok olmalar\u0131 di\u011fer t\u00fcrler \u00fczerinde zincirleme etkiler yaratabilir. Ayr\u0131ca gri balinalar, iklim de\u011fi\u015fikli\u011finin etkilerini azaltmaya yard\u0131mc\u0131 olan karbon tutmada hayati bir rol oynarlar.<\/p>\n\n
Bilim insanlar\u0131, son gri balina \u00f6l\u00fcmlerinin nedenlerini ara\u015ft\u0131rmaya devam ediyor. Otopsi yap\u0131yorlar, doku \u00f6rneklerini analiz ediyorlar ve bu ola\u011fan d\u0131\u015f\u0131 \u00f6l\u00fcm vakas\u0131na katk\u0131da bulunabilecek fakt\u00f6rleri daha iyi anlamak i\u00e7in balina pop\u00fclasyonlar\u0131n\u0131 izliyorlar.<\/p>","protected":false},"excerpt":{"rendered":"
San Francisco K\u00f6rfezi’nde gri balina \u00f6l\u00fcmleri: Endi\u015fe verici bir durum Ola\u011fan d\u0131\u015f\u0131 \u00f6l\u00fcm vakas\u0131 Son aylarda San Francisco K\u00f6rfezi b\u00f6lgesinde endi\u015fe verici say\u0131da gri balina \u00f6l\u00fc bulundu. May\u0131s 2023 itibar\u0131yla…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[6393,238,6392,6391,34,6394],"class_list":["post-3313","post","type-post","status-publish","format-standard","hentry","category-marine-biology","tag-arctic-ecosystem","tag-marine-mammals","tag-food-scarcity","tag-gray-whales","tag-climate-change","tag-unusual-mortality-event"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/3313","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=3313"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/3313\/revisions"}],"predecessor-version":[{"id":3314,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/3313\/revisions\/3314"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/media?parent=3313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/categories?post=3313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/tags?post=3313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}