{"id":43612,"date":"2026-05-18T09:54:29","date_gmt":"2026-05-18T07:54:29","guid":{"rendered":"https:\/\/www.deepseareporter.com\/?p=43612"},"modified":"2026-05-18T13:59:07","modified_gmt":"2026-05-18T11:59:07","slug":"fartygsbuller-tvingar-grindvalar-att-skrika","status":"publish","type":"post","link":"https:\/\/www.deepseareporter.com\/sv\/fartygsbuller-tvingar-grindvalar-att-skrika\/","title":{"rendered":"Fartygsbuller tvingar grindvalar att &#8221;skrika&#8221;"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"h-ljudnivan-under-ytan-i-gibraltar-sund-kan-jamforas-med-att-sta-bredvid-en-dammsugare-bullret-fran-sjotrafiken-paverkar-det-marina-livet-for-att-forsoka-overrosta-det-standiga-oljudet-hojer-sundets-grindvalar-rosten-visar-en-studie\">Ljudniv\u00e5n under ytan i Gibraltar sund kan j\u00e4mf\u00f6ras med att st\u00e5 bredvid en dammsugare.Bullret fr\u00e5n sj\u00f6trafiken p\u00e5verkar det marina livet. F\u00f6r att f\u00f6rs\u00f6ka \u00f6verr\u00f6sta det st\u00e4ndiga oljudet h\u00f6jer sundets grindvalar r\u00f6sten, visar en studie.<\/h2>\n\n\n\n<p>Gibraltar sund mellan Spanien och Marocko f\u00f6rbinder Atlanten med Medelhavet. H\u00e4r, l\u00e4ngs en av v\u00e4rldens mest trafikerade farleder, lever en liten, kritiskt hotad population med l\u00e5ngfenade grindvalar.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"854\" src=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a002nh-1280x854.jpeg\" alt=\"\" class=\"wp-image-43615\" srcset=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a002nh-1280x854.jpeg 1280w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a002nh-720x481.jpeg 720w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a002nh-768x513.jpeg 768w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a002nh-1536x1025.jpeg 1536w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a002nh.jpeg 2000w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption class=\"wp-element-caption\">Foto: Marcos Moreno\/AP\/TT<br>Utsikt \u00f6ver Gibraltarbukten 2022, d\u00e5 ett fraktfartyg kolliderade med en LNG-tanker i viken och orsakade ett utsl\u00e4pp.<\/figcaption><\/figure>\n\n\n\n<p>Trots sitt namn \u00e4r grindvalarna tekniskt sett stora delfiner, och precis som andra delfinarter lever de i flockar som anv\u00e4nder h\u00f6gfrekventa ljud f\u00f6r att kommunicera. Dessa klick och gnissel f\u00e4rdas kortare str\u00e4ckor \u00e4n exempelvis kn\u00f6lvalars mer melodiska s\u00e5ng.<\/p>\n\n\n\n<p>Nu har forskare kunnat visa att grindvalarna tvingas anpassa sin kommunikation i f\u00f6rh\u00e5llande till bullret fr\u00e5n sj\u00f6trafiken.&nbsp;<a href=\"https:\/\/journals.biologists.com\/jeb\/article-abstract\/229\/9\/jeb251217\/371598\/Vocal-compensation-to-noise-in-long-finned-pilot?redirectedFrom=fulltext\">Studien<\/a>, ledd av Milou Hegeman och Frants Jensen vid universitetet i danska \u00c5rhus och \u00e5terrapporterad av bland andra&nbsp;<a href=\"https:\/\/www.spiegel.de\/wissenschaft\/natur\/strasse-von-gibraltar-grindwale-schreien-gegen-schiffslaerm-an-a-e2e4106c-8629-4243-8ecc-e3ad3b43053e\">Der Spiegel<\/a>, visar att delfinerna h\u00f6jer sina \u201dr\u00f6ster\u201d f\u00f6r att f\u00f6rs\u00f6ka \u00f6verr\u00f6sta det konstanta bakgrundsljudet.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-inte-alla-ljud\">Inte alla ljud<\/h2>\n\n\n\n<p>F\u00f6r att unders\u00f6ka djurens kommunikation och beteende f\u00e4ste forskarna inspelningsapparater \u2013 som sm\u00e5 sp\u00e5rs\u00e4ndare \u2013 med sugkoppar mellan ryggfena och bl\u00e5sh\u00e5l.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"853\" src=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a003nh-1280x853.jpeg\" alt=\"\" class=\"wp-image-43617\" srcset=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a003nh-1280x853.jpeg 1280w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a003nh-720x480.jpeg 720w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a003nh-768x512.jpeg 768w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a003nh-1536x1024.jpeg 1536w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2026\/05\/260516-gibraltarvalar1-dc755f37-a003nh.jpeg 2000w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption class=\"wp-element-caption\">Foto: DBCA via AP\/TT<br>En l\u00e5ngfenad grindval i v\u00e4stra Australien 2023. Grindvalar strandar inte s\u00e4llan i stora grupper, sannolikt till f\u00f6ljd av navigationssv\u00e5righeter.<\/figcaption><\/figure>\n\n\n\n<p>Mellan 2012 och 2015 f\u00f6ljdes totalt 23 l\u00e5ngfenade grindvalar i upp till ett dygn vardera. D\u00e4refter samlades apparaterna in och ljudupptagningarna kunde analyseras av forskarna.<\/p>\n\n\n\n<p>Den registrerade \u00f6kningen i decibel g\u00e4llde s\u00e4rskilt l\u00e4ten med h\u00f6gre frekvens och kortare klickljud. Men valarna kan inte alltid h\u00f6ja volymen p\u00e5 sina l\u00e4ten f\u00f6r att h\u00f6ras \u00f6ver bullerf\u00f6roreningarna \u2013 vissa ljud g\u00e5r inte att g\u00f6ra starkare, enligt studien som publicerats i Journal of Experimental Biology.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-hojer-stressnivan\">H\u00f6jer stressniv\u00e5n<\/h2>\n\n\n\n<p>Mot bakgrund av forskarnas fynd antas de l\u00e5ngfenade grindvalarna i Gibraltar sund, som \u00e4r runt 250 till antalet, nu f\u00e5 allt sv\u00e5rare att kommunicera och hitta varandra.<\/p>\n\n\n\n<p>\u201dF\u00f6r den kritiskt hotade grindvalspopulationen i Gibraltarsundet \u00e4r dessa delvisa kompensationsmekanismer sannolikt otillr\u00e4ckliga f\u00f6r att uppr\u00e4tth\u00e5lla effektiv kommunikation\u201d, skriver studiens f\u00f6rfattare.<\/p>\n\n\n\n<p>Tidigare studier har pekat \u00e5t samma h\u00e5ll \u2013 att m\u00e4nskliga ljud har negativ inverkan p\u00e5 marina djur. 2012&nbsp;<a href=\"https:\/\/royalsocietypublishing.org\/rspb\/article-abstract\/279\/1737\/2363\/74122\/Evidence-that-ship-noise-increases-stress-in-right?redirectedFrom=fulltext\">visade en studie<\/a>&nbsp;att fartygsbuller h\u00f6jer stressniv\u00e5n hos r\u00e4tvalar, och 2024&nbsp;<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0025326X23013425?via%253Dihub\">konstaterade forskare<\/a>&nbsp;att sk\u00f6ldpaddor kring Gal\u00e1pagos \u00f6kade sin vaksamhet med \u00f6kande fartygsbuller.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ljudniv\u00e5n under ytan i Gibraltar sund kan j\u00e4mf\u00f6ras med att st\u00e5 bredvid en dammsugare.Bullret fr\u00e5n sj\u00f6trafiken p\u00e5verkar det marina livet. F\u00f6r att f\u00f6rs\u00f6ka \u00f6verr\u00f6sta det st\u00e4ndiga oljudet h\u00f6jer sundets grindvalar r\u00f6sten, visar en studie.<\/p>\n","protected":false},"author":4,"featured_media":43613,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[252,580,244],"tags":[1846,715,4667,2794,1510],"class_list":["post-43612","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-forskning","category-internationellt","category-klimat-och-miljo","tag-buller-i-havet","tag-delfiner","tag-grindvalar","tag-ljud-i-havet","tag-undervattensbuller"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Fartygsbuller tvingar grindvalar att &quot;skrika&quot; - Deep Sea Reporter<\/title>\n<meta name=\"description\" content=\"Ljudniv\u00e5n under ytan i Gibraltar sund kan j\u00e4mf\u00f6ras med att st\u00e5 bredvid en dammsugare.Bullret fr\u00e5n sj\u00f6trafiken p\u00e5verkar det marina livet. 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