{"id":11880,"date":"2021-05-31T21:54:14","date_gmt":"2021-05-31T21:54:14","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=11880"},"modified":"2021-05-31T21:54:14","modified_gmt":"2021-05-31T21:54:14","slug":"the-enigmatic-narwhal-a-tale-of-arctic-wonder-and-scientific-discovery","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/cs\/science\/zoology\/the-enigmatic-narwhal-a-tale-of-arctic-wonder-and-scientific-discovery\/","title":{"rendered":"Z\u00e1hadn\u00fd narval: P\u0159\u00edb\u011bh arktick\u00fdch div\u016f a v\u011bdeck\u00fdch objev\u016f"},"content":{"rendered":"

Z\u00e1hadn\u00fd narval: P\u0159\u00edb\u011bh arktick\u00fdch div\u016f a v\u011bdeck\u00fdch objev\u016f<\/h2>\n\n

Jednoro\u017eec mo\u0159\u00ed<\/h2>\n\n

V ledov\u00fdch hlubin\u00e1ch Arktidy \u017eije tvor, kter\u00fd po stalet\u00ed uchvacuje lidskou p\u0159edstavivost \u2013 narval. Zn\u00e1m\u00fd jako \u201ejednoro\u017eec mo\u0159\u00ed\u201c kv\u016fli sv\u00e9mu jedin\u00e9mu, spir\u00e1lovit\u011b sto\u010den\u00e9mu klu, je tento nepolapiteln\u00fd kytovec zahalen tajemstv\u00edm a \u00fa\u017easem.<\/p>\n\n

Kristin Laidre: Baletka, kter\u00e1 se stala biolo\u017ekou<\/h2>\n\n

P\u0159edstavujeme Kristin Laidre, b\u00fdvalou baletku, kter\u00e1 se stala arktickou biolo\u017ekou a zasv\u011btila sv\u016fj \u017eivot odhalov\u00e1n\u00ed tajemstv\u00ed narval\u016f. D\u00edky sv\u00e9mu um\u011bleck\u00e9mu c\u00edt\u011bn\u00ed a neutuchaj\u00edc\u00ed trp\u011blivosti se stala p\u0159edn\u00ed odbornic\u00ed na tyto z\u00e1hadn\u00e9 tvory.<\/p>\n\n

Z\u00e1hada z b\u00edl\u00e9ho zlata<\/h2>\n\n

Nejv\u00fdrazn\u011bj\u0161\u00edm znakem narvala je jeho kel, kter\u00fd m\u016f\u017ee dor\u016fst d\u00e9lky a\u017e 10 stop. Kdysi se v\u011b\u0159ilo, \u017ee jde o roh b\u00e1jn\u00e9ho jednoro\u017ece, ale ve skute\u010dnosti jde o modifikovan\u00fd zub. V\u011bdci se domn\u00edvaj\u00ed, \u017ee m\u016f\u017ee slou\u017eit k r\u016fzn\u00fdm \u00fa\u010del\u016fm, jako je dominance, vn\u00edm\u00e1n\u00ed teploty vody a p\u0159il\u00e1k\u00e1n\u00ed partnera.<\/p>\n\n

Arktick\u00e9 prost\u0159ed\u00ed a p\u0159izp\u016fsoben\u00ed<\/h2>\n\n

Narvalov\u00e9 ob\u00fdvaj\u00ed ledov\u00e9 vody Severn\u00edho ledov\u00e9ho oce\u00e1nu, kde se spol\u00e9haj\u00ed na mo\u0159sk\u00fd led pro ochranu a potravu. Jejich kompaktn\u00ed t\u011bla, kter\u00e1 obsahuj\u00ed a\u017e 50 % tuku, jim pom\u00e1haj\u00ed udr\u017eet teplo v mraziv\u00e9m prost\u0159ed\u00ed. Na rozd\u00edl od jin\u00fdch velryb nemaj\u00ed narvalov\u00e9 h\u0159betn\u00ed ploutev, co\u017e je mo\u017en\u00e1 adaptace na jejich ledov\u00fd biotop.<\/p>\n\n

Neuchopiteln\u00ed a t\u011b\u017eko zkoumateln\u00ed<\/h2>\n\n

Narvalov\u00e9 jsou kv\u016fli sv\u00e9 neuchopiteln\u00e9 povaze pov\u011bstn\u011b obt\u00ed\u017en\u00ed ke zkoum\u00e1n\u00ed. Vyh\u00fdbaj\u00ed se motorov\u00fdm \u010dlun\u016fm a d\u00e1vaj\u00ed p\u0159ednost hust\u00e9mu mo\u0159sk\u00e9mu ledu, co\u017e v\u011bdc\u016fm zt\u011b\u017euje jejich pozorov\u00e1n\u00ed a ozna\u010dov\u00e1n\u00ed. Laidre a jej\u00ed t\u00fdm vyvinuli inovativn\u00ed techniky, jako je p\u0159ipev\u0148ov\u00e1n\u00ed vys\u00edla\u010d\u016f na upraven\u00e9 harpuny odpalovan\u00e9 inuitsk\u00fdmi lovci, aby sledovali pohyby narval\u016f.<\/p>\n\n

Inuitsk\u00e9 spojen\u00ed<\/h2>\n\n

Inuit\u00e9 na Gr\u00f3nsku maj\u00ed dlouhou historii lovu narval\u016f za \u00fa\u010delem ob\u017eivy a kulturn\u00edch pot\u0159eb. Jejich tradi\u010dn\u00ed znalosti a dovednosti se uk\u00e1zaly b\u00fdt neoceniteln\u00e9 pro v\u011bdce jako Laidre, kte\u0159\u00ed spolupracuj\u00ed s m\u00edstn\u00edmi lovci, aby z\u00edskali poznatky o chov\u00e1n\u00ed narval\u016f a dynamice populace.<\/p>\n\n

Obavy o ochranu p\u0159\u00edrody<\/h2>\n\n

Narvalov\u00e9 \u010del\u00ed n\u011bkolika v\u00fdzv\u00e1m v oblasti ochrany p\u0159\u00edrody, v\u010detn\u011b ztr\u00e1ty biotopu v d\u016fsledku zm\u011bny klimatu a nadm\u011brn\u00e9ho lovu. Gr\u00f3nsko ned\u00e1vno zavedlo loveck\u00e9 kv\u00f3ty na ochranu druhu, ale st\u00e1le existuj\u00ed obavy ohledn\u011b dlouhodob\u00fdch dopad\u016f sn\u00ed\u017een\u00e9ho pokryt\u00ed mo\u0159sk\u00fdm ledem na populace narval\u016f.<\/p>\n\n

Zm\u011bna klimatu a Arktida<\/h2>\n\n

Jak se Arktida alarmuj\u00edc\u00edm tempem otepluje, mo\u0159sk\u00fd led, na kter\u00fd jsou narvalov\u00e9 z\u00e1visl\u00ed, taje neb\u00fdval\u00fdm tempem. Tato ztr\u00e1ta biotopu a naru\u0161en\u00ed dostupnosti potravy p\u0159edstavuje v\u00e1\u017enou hrozbu pro jejich p\u0159e\u017eit\u00ed. Laidre a jej\u00ed kolegov\u00e9 p\u0159ipevnili na narvaly teplotn\u00ed senzory, aby sledovali teplotu vody a zkoumali dopad zm\u011bny klimatu na jejich chov\u00e1n\u00ed.<\/p>\n\n

V\u00fdzkum a objevy<\/h2>\n\n

Laidreho pr\u016flomov\u00fd v\u00fdzkum roz\u0161\u00ed\u0159il na\u0161e ch\u00e1p\u00e1n\u00ed narval\u016f v mnoha ohledech. Jej\u00ed t\u00fdm analyzoval obsah \u017ealudk\u016f, aby odhalil jejich zimn\u00ed stravu, potvrdil hloubku jejich ponor\u016f a sledoval jejich rozs\u00e1hl\u00e9 migrace. Tak\u00e9 prolila sv\u011btlo na jejich genetickou diverzitu a potenci\u00e1ln\u00ed rizika, kter\u00fdm \u010del\u00ed kv\u016fli sv\u00fdm specializovan\u00fdm adaptac\u00edm.<\/p>\n\n

Odkaz \u00fa\u017easu a v\u011bdy<\/h2>\n\n

Kristin Laidreho v\u00e1\u0161e\u0148 pro narvaly nejen\u017ee posunula v\u011bdeck\u00e9 poznatky, ale tak\u00e9 za\u017eehla pocit \u00fa\u017easu a \u00fadivu u bezpo\u010dtu lid\u00ed. Prost\u0159ednictv\u00edm sv\u00e9ho v\u00fdzkumu a spolupr\u00e1ce p\u0159eklenula sv\u011bt v\u011bdy a um\u011bn\u00ed a vytvo\u0159ila odkaz, kter\u00fd bude i nad\u00e1le inspirovat budouc\u00ed generace badatel\u016f a v\u011bdc\u016f.<\/p>","protected":false},"excerpt":{"rendered":"

Z\u00e1hadn\u00fd narval: P\u0159\u00edb\u011bh arktick\u00fdch div\u016f a v\u011bdeck\u00fdch objev\u016f Jednoro\u017eec mo\u0159\u00ed V ledov\u00fdch hlubin\u00e1ch Arktidy \u017eije tvor, kter\u00fd po stalet\u00ed uchvacuje lidskou p\u0159edstavivost \u2013 narval. Zn\u00e1m\u00fd jako \u201ejednoro\u017eec mo\u0159\u00ed\u201c kv\u016fli sv\u00e9mu…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[280],"tags":[1354,254,16045,361,15655,34],"class_list":["post-11880","post","type-post","status-publish","format-standard","hentry","category-zoology","tag-arctic","tag-wildlife","tag-kristin-laidre","tag-marine-biology","tag-narwhal","tag-climate-change"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/11880","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=11880"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/11880\/revisions"}],"predecessor-version":[{"id":11881,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/11880\/revisions\/11881"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=11880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=11880"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=11880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}