{"id":6146,"date":"2026-10-19T09:48:33","date_gmt":"2026-10-19T09:48:33","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-liffraedi-william-butler\/"},"modified":"2026-10-19T09:48:33","modified_gmt":"2026-10-19T09:48:33","slug":"doktorsvorn-i-liffraedi-william-butler","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-liffraedi-william-butler\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed l\u00edffr\u00e6\u00f0i &#8211; William Butler"},"content":{"rendered":"<div class=\"field-items\">\n<div class=\"field-item even\" property=\"content:encoded\">\n<p>V\u00f6rninni ver\u00f0ur streymt:\u00a0 <a href=\"https:\/\/livestream.com\/hi\/doktorsvornwilliambutler\">https:\/\/livestream.com\/hi\/doktorsvornwilliambutler<\/a><\/p>\n<p><strong>Doktorsefni:<\/strong>\u00a0William Butler<\/p>\n<p><strong>Heiti ritger\u00f0ar:<\/strong>\u00a0Notkun l\u00edkana til a\u00f0 herma eftir dreifingu og atferli fiskungvi\u00f0is (Modelling the dispersal and behaviour of fish\u00a0early life-stages)<\/p>\n<p><strong>Andm\u00e6lendur:<\/strong><strong><br \/> <\/strong>Dr. Alejandro Gallego, forst\u00f6\u00f0uma\u00f0ur haffr\u00e6\u00f0iranns\u00f3kna hj\u00e1 Hafranns\u00f3knastofnun Skotlands<br \/> Dr. Pierre Pepin, v\u00edsindama\u00f0ur vi\u00f0 DFO-stofnunina, Kanada<\/p>\n<p><strong>Lei\u00f0beinandi:<\/strong>\u00a0Dr. Gu\u00f0r\u00fan Marteinsd\u00f3ttir, pr\u00f3fessor vi\u00f0 L\u00edf- og umhverfisv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>Einnig \u00ed doktorsnefnd:<\/strong><strong><br \/> <\/strong>Dr. Steven Campana, pr\u00f3fessor vi\u00f0 L\u00edf- og umhverfisv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<br \/> Dr. \u00d8yvind Fiksen, pr\u00f3fessor vi\u00f0 St\u00e6r\u00f0fr\u00e6\u00f0i- og n\u00e1tt\u00faruv\u00edsindadeild H\u00e1sk\u00f3lans \u00ed Bergen, Noregi<\/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>Stofnsveiflur sj\u00e1varfiska er kn\u00fanar \u00e1fram af m\u00f6rgum \u00fe\u00e1ttum sem hafa \u00e1hrif \u00e1 afkomu fiska \u00e1 \u00f6llum l\u00edfsstigum. Flestir beinfiskar gefa af s\u00e9r mikinn fj\u00f6lda afkv\u00e6ma sem ver\u00f0a fyrir h\u00e1rri d\u00e1nart\u00ed\u00f0ni snemma \u00e1 l\u00edfslei\u00f0inni. Breytingar \u00e1 d\u00e1nart\u00ed\u00f0ni \u00e1 \u00feessu l\u00edfsskei\u00f0i geta \u00fev\u00ed haft mikil \u00e1hrif \u00e1 styrk tiltekinna \u00e1rganga. D\u00e1nart\u00ed\u00f0ni snemma \u00e1 \u00e6viskei\u00f0inu er almennt \u00f3h\u00e1\u00f0 \u00fe\u00e9ttleika og \u00fev\u00ed hafa umhverfis\u00fe\u00e6ttir meiri \u00e1hrif \u00e1 yfirlifun en st\u00e6r\u00f0 \u00e1rganganna. Vi\u00f0 breytilegar umhverfisa\u00f0st\u00e6\u00f0ur eru meiri l\u00edkur \u00e1 a\u00f0 einhver afkv\u00e6mi komist af ef upphafsfj\u00f6ldi \u00feeirra er h\u00e1r. \u00deetta orsakasamband fr\u00e1 foreldri til afkv\u00e6ma er meginvi\u00f0fangsefni \u00feessarar ritger\u00f0ar.<\/p>\n<p>Ranns\u00f3knin h\u00f3fst me\u00f0 s\u00fdnat\u00f6kum og m\u00e6lingum \u00e1 st\u00e6r\u00f0 og e\u00f0lis\u00feyngd eggja og lirfa \u00feorskfiska og \u00fe\u00e6r nota\u00f0ar til a\u00f0 byggja l\u00edk\u00f6n sem voru keyr\u00f0 til a\u00f0 sko\u00f0a l\u00f3\u00f0r\u00e9tta og l\u00e1r\u00e9tta dreifingu og atferli afkv\u00e6manna.<\/p>\n<p>Ni\u00f0urst\u00f6\u00f0ur m\u00e6lingana leiddu \u00ed lj\u00f3s mun \u00e1 eiginleikum hrogna hj\u00e1 tveimur tegundum \u00feorskfiska. Vi\u00f0 ger\u00f0 sl\u00edkra l\u00edkana er mikilv\u00e6gt a\u00f0: 1) taka tillit til breytileika \u00ed e\u00f0lis\u00feyngd eggja \u00e1 milli tegunda; 2) l\u00edkja eftir l\u00f3\u00f0r\u00e9ttu fari fisklirfa og 3) keyra l\u00edk\u00f6nin \u00ed h\u00e1rri upplausn hva\u00f0 var\u00f0ar t\u00edma. Einnig kom \u00ed lj\u00f3s a\u00f0 sta\u00f0setning hrygningarsv\u00e6\u00f0a getur haft mikil \u00e1hrif \u00e1 far afkv\u00e6ma og sagt til um inn \u00e1 hva\u00f0a uppeldissv\u00e6\u00f0i \u00feau rata. \u00cd \u00feessu verkefni eru lag\u00f0ar fram n\u00fdjar ni\u00f0urst\u00f6\u00f0ur um \u00fe\u00e6tti sem hafa \u00e1hrif \u00e1 \u00e1rgangastyrk \u00feorskfiska. \u00deessar ni\u00f0urst\u00f6\u00f0ur munu n\u00fdtast vi\u00f0 fiskvei\u00f0istj\u00f3rnun og ranns\u00f3knir \u00e1 fiskstofnum ekki bara vi\u00f0 \u00cdsland heldur um heim allan.<\/p>\n<p><strong>Um doktorsefni\u00f0<\/strong><\/p>\n<p>William Butler lauk BSc-gr\u00e1\u00f0u \u00ed sj\u00e1varl\u00edffr\u00e6\u00f0i og haffr\u00e6\u00f0i vi\u00f0 H\u00e1sk\u00f3lann \u00ed Southampton \u00e1ri\u00f0 2006, og MRes \u00ed sj\u00e1var- og ferskvatnsvistfr\u00e6\u00f0i vi\u00f0 H\u00e1sk\u00f3lann \u00ed Glasgow \u00e1ri seinna. \u00c1\u00f0ur en hann h\u00f3f doktorsn\u00e1m vi\u00f0 H\u00e1sk\u00f3la \u00cdslands vann hann vi\u00f0 l\u00edkanager\u00f0 og greiningar \u00e1 vatnsg\u00f6gnum fyrir Umhverfisverndarstofnun Skotlands \u00ed Edinborg. Will starfar \u00ed dag hj\u00e1 Hafranns\u00f3knastofnun \u00ed Reykjav\u00edk.<\/p>\n<\/div><\/div>","protected":false},"featured_media":2066,"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":"2020-12-09T14:00:00+00:00","_phd_date_end":"2020-12-09T16:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0arsalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"Notkun l\u00edkana til a\u00f0 herma eftir dreifingu og atferli fiskungvi\u00f0is (Modelling the dispersal and behaviour of fish early life-stages)","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_liffraedi_william_butler","_phd_source_node_id":"370693","_phd_source_type":"vidburdir","_phd_member_id":639,"footnotes":""},"phd_school":[96,93],"phd_discipline":[97],"class_list":["post-6146","phd_defence","type-phd_defence","status-publish","has-post-thumbnail","hentry","phd_school-lif-og-umhverfisvisindadeild","phd_school-verkfraedi-og-natturuvisindasvid","phd_discipline-phd-i-liffraedi"],"_links":{"self":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6146","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence"}],"about":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/types\/phd_defence"}],"version-history":[{"count":0,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6146\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/2066"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6146"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6146"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}