{"id":16874,"date":"2026-05-02T18:36:00","date_gmt":"2026-05-02T18:36:00","guid":{"rendered":"https:\/\/cp.snarskis.lt\/index.php\/2026\/05\/02\/milijonai-meduzu-be-geluonies-palau-ezeras-slepia-rusi-kurios-nerasite-niekur-kitur\/"},"modified":"2026-05-02T18:36:00","modified_gmt":"2026-05-02T18:36:00","slug":"milijonai-meduzu-be-geluonies-palau-ezeras-slepia-rusi-kurios-nerasite-niekur-kitur","status":"publish","type":"post","link":"https:\/\/cp.snarskis.lt\/index.php\/2026\/05\/02\/milijonai-meduzu-be-geluonies-palau-ezeras-slepia-rusi-kurios-nerasite-niekur-kitur\/","title":{"rendered":"Milijonai med\u016bz\u0173 be geluonies? Palau e\u017eeras slepia r\u016b\u0161\u012f, kurios nerasite niekur kitur"},"content":{"rendered":"<p>Vakar\u0173 Ramiajame vandenyne esantis Palau salynas turi viet\u0105, kuri biologams tapo nat\u016bralia evoliucijos laboratorija. Eil Malk saloje esantis vadinamasis Med\u016bz\u0173 e\u017eeras t\u016bkstan\u010dius met\u0173 vyst\u0117si beveik atskirtas nuo vandenyno, tod\u0117l \u010dia susiformavo i\u0161skirtin\u0117 ekosistema.<\/p>\n<p>Mokslininkai nurodo, kad e\u017eeras susidar\u0117 ma\u017edaug prie\u0161 12 000 met\u0173, pasibaigus paskutiniam ledynme\u010diui, kai kylantis j\u016bros lygis u\u017eliejo \u012fdubas kalkakmenyje. Ry\u0161ys su vandenynu liko tik minimalus, per uolien\u0173 ply\u0161ius, tad daugelis organizm\u0173 ilgainiui prisitaik\u0117 prie izoliuot\u0173 s\u0105lyg\u0173.<\/p>\n<p>Ry\u0161kiausias pavyzdys yra med\u016bz\u0173 populiacija: e\u017eere gali gyventi milijonai individ\u0173, o da\u017enai minima ir apie 5 000 000 unikalios med\u016bzos Mastigias papua etpisoni. \u0160is por\u016b\u0161is aptinkamas tik \u010dia, tod\u0117l bet kokie aplinkos poky\u010diai jam tampa ypa\u010d pavojingi.<\/p>\n<p>Ilgalaik\u0117 izoliacija ir nat\u016brali\u0173 pl\u0117\u0161r\u016bn\u0173 stoka pakeit\u0117 med\u016bz\u0173 biologij\u0105. J\u0173 geluoniniai l\u0105stel\u0117s yra gerokai silpnesn\u0117s nei artim\u0173 giminai\u010di\u0173 atviroje j\u016broje, tod\u0117l \u017emon\u0117s e\u017eere paprastai gali plaukioti tarp med\u016bz\u0173, nors jautresniems asmenims kontaktas vis tiek gali sukelti odos sudirginim\u0105.<\/p>\n<p>Med\u016bz\u0173 gaus\u0105 palaiko simbioz\u0117 su mikroskopiniais dumbliais, gyvenan\u010diais j\u0173 audiniuose. Dumbliai fotosintezuodami apr\u016bpina \u0161eiminink\u0105 energija, o med\u016bzos, jud\u0117damos vandens storym\u0117je, padeda dumbliams gauti daugiau \u0161viesos ir maistini\u0173 med\u017eiag\u0173.<\/p>\n<p>Pats e\u017eeras n\u0117ra vienalytis: jo vanduo ai\u0161kiai sluoksniuojasi. Vir\u0161utin\u0117je dalyje yra deguonies ir \u0161viesos, tod\u0117l b\u016btent ten sutelktas did\u017eiausias gyvyb\u0117s kiekis, o giliau prasideda zona, kur deguonies beveik n\u0117ra ir kur formuojasi bakterij\u0173 sluoksnis.<\/p>\n<p>Dar giliau vanduo gali b\u016bti prisotintas sieros vandenilio, kuris daugumai organizm\u0173 yra mirtinas, tod\u0117l jud\u0117jimas \u012f gilesnius sluoksnius tampa pavojingas. Tokia strukt\u016bra paver\u010dia e\u017eer\u0105 u\u017edaru pasauliu, kuriame kiekvienas aplinkos svyravimas, pavyzd\u017eiui, vandens temperat\u016bros ar druskingumo pokytis, gali greitai pakeisti pusiausvyr\u0105.<\/p>\n<p>Pastaraisiais metais tokioms izoliuotoms ekosistemoms vis da\u017eniau d\u0117mes\u012f atkreipia ir klimato kaitos tyr\u0117jai. \u0160iltesnis vanduo, ekstremal\u016bs krituliai ar ilgesn\u0117s sausros gali paveikti sluoksniavim\u0105si, deguonies balans\u0105 ir dumbli\u0173 bei med\u016bz\u0173 tarpusavio santyk\u012f, tod\u0117l net ir atok\u016bs gamtos stebuklai n\u0117ra apsaugoti nuo globali\u0173 proces\u0173.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Palau Med\u016bz\u0173 e\u017eeras t\u016bkstan\u010dius met\u0173 vyst\u0117si izoliuotas, tod\u0117l \u010dia susiformavo unikalus med\u016bz\u0173 por\u016b\u0161is ir itin trapus sluoksniuotas ekosistemos balansas.<\/p>\n","protected":false},"author":0,"featured_media":16875,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[7150,151,3211,673,7149,7148,7147],"miestas":[],"class_list":["post-16874","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mokslas","tag-eil-malk","tag-ekosistemos","tag-evoliucija","tag-klimato-kaita","tag-mastigias-papua-etpisoni","tag-meduzu-ezeras","tag-palau"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/16874","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/comments?post=16874"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/16874\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media\/16875"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=16874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=16874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=16874"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=16874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}