{"id":6242,"date":"2026-10-19T09:48:40","date_gmt":"2026-10-19T09:48:40","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-liffraedi-charles-christian-riis-hansen\/"},"modified":"2026-10-19T09:48:40","modified_gmt":"2026-10-19T09:48:40","slug":"doktorsvorn-i-liffraedi-charles-christian-riis-hansen","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-liffraedi-charles-christian-riis-hansen\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed l\u00edffr\u00e6\u00f0i &#8211; Charles Christian Riis Hansen"},"content":{"rendered":"<div class=\"field-items\">\n<div class=\"field-item even\" property=\"content:encoded\">\n<p><strong>Streymi:\u00a0<\/strong><a href=\"https:\/\/livestream.com\/hi\/doktorsvorncharleschristianriishansen\">https:\/\/livestream.com\/hi\/doktorsvorncharleschristianriishansen<\/a><\/p>\n<p><strong>Doktorsefni:<\/strong>\u00a0Charles Christian Riis Hansen<\/p>\n<p><strong>Heiti ritger\u00f0ar:<\/strong>\u00a0Hafernir \u00ed t\u00edma og r\u00fami. Stofnerf\u00f0afr\u00e6\u00f0i og \u00e1hrif mikillar f\u00e6kkunar hj\u00e1\u00a0Haliaeetus albicilla\u00a0(White-tailed eagles in time and space. Population genetics and the aftermath of severe bottlenecks in\u00a0Haliaeetus albicilla)<\/p>\n<p><strong>Andm\u00e6lendur:<\/strong><br \/>  Dr. Frank Hailer, d\u00f3sent vi\u00f0 Cardiff University, Bretlandi<br \/>  Dr. J\u00f3n Hallsteinn Hallsson, pr\u00f3fessor vi\u00f0 Landb\u00fana\u00f0arh\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>Lei\u00f0beinandi:<\/strong>\u00a0Dr. Sn\u00e6bj\u00f6rn P\u00e1lsson, pr\u00f3fessor vi\u00f0 L\u00edf- og umhverfisv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>Einnig \u00ed doktorsnefnd:<\/strong><br \/>  Dr. M. Thomas P. Gilbert, pr\u00f3fessor vi\u00f0 Kaupmannahafnarh\u00e1sk\u00f3la<br \/>  Dr. Agnar Helgason, pr\u00f3fessor vi\u00f0 F\u00e9lagsfr\u00e6\u00f0i-, mannfr\u00e6\u00f0i- og \u00fej\u00f3\u00f0fr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands og yfirma\u00f0ur Mannfr\u00e6\u00f0ideildar \u00cdslenskrar erf\u00f0agreiningar<\/p>\n<p><strong>Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. Anna D\u00f3ra S\u00e6\u00fe\u00f3rsd\u00f3ttir, pr\u00f3fessor og deildarforseti L\u00edf- og umhverfisv\u00edsindadeildar H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>\u00c1grip<\/strong><\/p>\n<p>\u00c1hrif stofnst\u00e6r\u00f0arsveiflna \u00e1 erf\u00f0abreytileika og heg\u00f0un breytileika \u00ed litlum stofnum hefur veri\u00f0 vel l\u00fdst. Fj\u00f6lmargar ranns\u00f3knir \u00ed l\u00edffr\u00e6\u00f0i hafa veri\u00f0 ger\u00f0ar \u00e1 erf\u00f0abreytileika stofna en sjaldan hafa s\u00fdni veri\u00f0 greind fyrir og eftir sl\u00edkar ni\u00f0ursveiflur, sem kalla\u00f0ar hafa veri\u00f0 erf\u00f0afr\u00e6\u00f0ilegur fl\u00f6skuh\u00e1ls, og \u00fev\u00ed eru \u00e1hrifin oft greind eftir breytingarnar anna\u00f0hvort me\u00f0 l\u00edkanager\u00f0 e\u00f0a me\u00f0 samanbur\u00f0i vi\u00f0 stofna sem hafa ekki fari\u00f0 \u00ed gegnum sl\u00edkan fl\u00f6skuh\u00e1ls. Haf\u00f6rninn er ein margra tegunda sem hefur f\u00e6kka\u00f0 miki\u00f0 vegna \u00e1hrifa mannsins. Tegundin er \u00fatdau\u00f0 \u00e1 m\u00f6rgum sv\u00e6\u00f0um en haferninum fer n\u00fa fj\u00f6lgandi. Til a\u00f0 rannsaka \u00e1hrif fl\u00f6skuh\u00e1lsa og erf\u00f0abreytileika hj\u00e1 haf\u00f6rnum \u00e1 \u00cdslandi og \u00ed n\u00e1l\u00e6gum l\u00f6ndum voru \u00ferj\u00e1r ranns\u00f3knir ger\u00f0ar \u00e1 erf\u00f0amengjum tegundarinnar. \u00cd fyrsta lagi var erf\u00f0abreytileiki og saga stofna \u00e1 \u00cdslandi og \u00ed fj\u00f3rum n\u00e1l\u00e6gum l\u00f6ndum metin me\u00f0 \u00fev\u00ed a\u00f0 greina erf\u00f0amengi hvatbera hj\u00e1 n\u00falifandi \u00f6rnum. N\u00e1tt\u00farulegt val vir\u00f0ist hafa vi\u00f0haldi\u00f0 breytileika \u00ed hvatberamengjunum innan stofna. \u00cd \u00f6\u00f0ru lagi var \u00e1rangur fj\u00f6gurra a\u00f0fer\u00f0a til a\u00f0 greina Z-kynlitninginn \u00ed erf\u00f0amengjum arnanna metinn, en greining \u00e1 breytileika m.t.t. til meginlitninga er mikilv\u00e6g \u00fear sem stofnst\u00e6r\u00f0 \u00feeirra er mismunandi og \u00feeir geta \u00e1tt \u00f3l\u00edka \u00fer\u00f3unars\u00f6gu. \u00deri\u00f0ja og \u00edtarlegasta ranns\u00f3knin var um a\u00f0greiningu \u00ed erf\u00f0amengjum stofna vi\u00f0 Nor\u00f0ur-Atlantshaf, \u00fe.e. fr\u00e1 \u00cdslandi, Gr\u00e6nlandi og fj\u00f3rum \u00f6\u00f0rum l\u00f6ndum \u00e1 meginlandi Evr\u00f3pu. \u00cd samanbur\u00f0i \u00e1 um hundra\u00f0 \u00e1ra g\u00f6mlum s\u00fdnum, fengnum \u00far s\u00f6fnum, og n\u00fdjum s\u00fdnum greindust sk\u00fdr \u00e1hrif af fl\u00f6skuh\u00e1lsum \u00e1 breytileika erf\u00f0amengjanna, b\u00e6\u00f0i innan og milli stofna. Ranns\u00f3knin leiddi einnig \u00ed lj\u00f3s hluta af \u00fer\u00f3unars\u00f6gu \u00feessara \u00f3l\u00edku stofna.<\/p>\n<p><strong>Um doktorsefni\u00f0<\/strong><\/p>\n<p>Charles Christian Riis Hansen f\u00e6ddist 1987 og \u00f3lst upp \u00ed Kaupmannah\u00f6fn hj\u00e1 foreldrum s\u00ednum Lars og Gerd. Hann lauk grunn- og meistaran\u00e1mi \u00ed l\u00edffr\u00e6\u00f0i fr\u00e1 Kaupmannahafnarh\u00e1sk\u00f3la \u00fear sem hann kynntist konu sinnu Idu, sem studdi hann vel \u00ed doktorsn\u00e1mi hans. \u00cd n\u00e1mi s\u00ednu s\u00e9rh\u00e6f\u00f0i Charles sig \u00ed erf\u00f0afr\u00e6\u00f0i og \u00fer\u00f3unarfr\u00e6\u00f0i og var vi\u00f0fangsefni hans \u00ed meistaraverkefni stofnerf\u00f0afr\u00e6\u00f0i sau\u00f0nauta. \u00de\u00e6r ranns\u00f3knir leiddu til \u00feess a\u00f0 hann h\u00f3f doktorsn\u00e1m til a\u00f0 rannsaka svipu\u00f0 verkefni.<\/p>\n<\/div><\/div>","protected":false},"featured_media":5011,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_phd_date_start":"2021-12-17T13:00:00+00:00","_phd_date_end":"2021-12-17T15:00:00+00:00","_phd_location":"Askja Stofa 132","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"Hafernir \u00ed t\u00edma og r\u00fami. 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