{"id":6217,"date":"2026-10-19T09:48:38","date_gmt":"2026-10-19T09:48:38","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-liffraedi-jonas-pall-jonasson\/"},"modified":"2026-10-19T09:48:38","modified_gmt":"2026-10-19T09:48:38","slug":"doktorsvorn-i-liffraedi-jonas-pall-jonasson","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-liffraedi-jonas-pall-jonasson\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed l\u00edffr\u00e6\u00f0i – J\u00f3nas P\u00e1ll J\u00f3nasson"},"content":{"rendered":"
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Streymi:\u00a0<\/strong>https:\/\/livestream.com\/hi\/doktorsvornjonasjonasson<\/a><\/p>\n

Doktorsefni:<\/strong>\u00a0J\u00f3nas P\u00e1ll J\u00f3nasson<\/p>\n

Heiti ritger\u00f0ar:<\/strong>\u00a0Stofnsveiflur fiskungvi\u00f0is og hryggleysingja vi\u00f0 \u00cdsland (Population dynamics of fish juveniles and invertebrates in Icelandic waters)<\/p>\n

Andm\u00e6lendur:<\/strong>
Dr. Richard David Marriott Nash, s\u00e9rfr\u00e6\u00f0ingur hj\u00e1 hafranns\u00f3knastofnuninni Marine Fisheries Cefas \u00ed Lowestoft, Bretlandi
Dr. Gu\u00f0bj\u00f6rg \u00c1sta \u00d3lafsd\u00f3ttir, forst\u00f6\u00f0uma\u00f0ur ranns\u00f3knaseturs H\u00e1sk\u00f3la \u00cdslands \u00e1 Vestfj\u00f6r\u00f0um<\/p>\n

Lei\u00f0beinandi:<\/strong>\u00a0Dr. Gu\u00f0r\u00fan Marteinsd\u00f3ttir, pr\u00f3fessor vi\u00f0 L\u00edf- og umhverfisv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n

Einnig \u00ed doktorsnefnd:
<\/strong>Dr. Bruce J. McAdam, lektor vi\u00f0 Institute of Aquaculture, The University of Sterling, Bretlandi
Dr. Sigur\u00f0ur Snorrason, pr\u00f3fessor vi\u00f0 L\u00edf- og umhverfisv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n

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

\u00c1grip<\/strong><\/p>\n

Vi\u00f0 \u00cdsland er a\u00f0 finna eitt fl\u00f3knasta hafstraumakerfi \u00ed Nor\u00f0ur-Atlantshafi. H\u00e9r m\u00e1 b\u00faast vi\u00f0 mismunandi \u00e1hrifum umhverfisbreytinga \u00e1 \u00f3l\u00edka stofna sj\u00e1varl\u00edfvera, en me\u00f0 \u00fev\u00ed a\u00f0 sko\u00f0a nokkrar tegundir m\u00e1 draga v\u00ed\u00f0t\u00e6kari \u00e1lyktanir af e\u00f0li \u00e1hrifanna. Meginvi\u00f0fangsefni \u00feessa verkefnis var ranns\u00f3kn \u00e1 ungvi\u00f0i og stofnsveiflum me\u00f0 tilliti til n\u00fdli\u00f0unar hj\u00e1 \u00feorski, skarkola, sandr\u00e6kju og h\u00f6rpudiski. Ranns\u00f3knin t\u00f3k yfir t\u00edmabil \u00feegar innstreymi hl\u00fds Atlantssj\u00e1var j\u00f3kst me\u00f0 tilsvarandi h\u00e6kkun sj\u00e1varhita.<\/p>\n

\u00deorskungvi\u00f0i var a\u00f0 finna \u00ed h\u00e1um \u00fe\u00e9ttleika \u00ed seltuminni sj\u00f3 n\u00e6rri landi, sem rennir sto\u00f0um undir mikilv\u00e6gi ferskvatnskn\u00fana strandstraumsins vi\u00f0 \u00e1rangursr\u00edka n\u00fdli\u00f0un hj\u00e1 \u00feorski og flutningi \u00e1 lirfum yfir \u00e1 nor\u00f0l\u00e6gari uppeldissv\u00e6\u00f0i. Stofnst\u00e6r\u00f0arsveiflur hj\u00e1 \u00feorski og skarkola vi\u00f0 \u00cdsland eru almennt litlar og m\u00e1 a\u00f0 einhverju leyti rekja \u00e1st\u00e6\u00f0ur \u00feess til fl\u00f3kinnar stofnger\u00f0ar tegundanna og a\u00f0 auki hemjandi \u00fe\u00e9ttleikah\u00e1\u00f0ra \u00e1hrifa \u00e1 uppeldissl\u00f3\u00f0 skarkolans. H\u00f6rpudisksstofninn \u00ed Brei\u00f0afir\u00f0i var ein fyrsta tegundin vi\u00f0 \u00cdsland sem hrundi \u00ed kj\u00f6lfar n\u00faverandi hl\u00fdindaskei\u00f0s sem h\u00f3fst \u00ed kringum \u00e1ri\u00f0 1996, en hruni\u00f0 markast af h\u00e1u vei\u00f0i\u00e1lagi, h\u00e1um n\u00e1tt\u00farulegum dau\u00f0a \u00ed kj\u00f6lfar s\u00fdkingar og l\u00e9legrar n\u00fdli\u00f0unar. \u00c1 \u00feessu t\u00edmabili greindust einnig nokkrar \u00e1gengar l\u00edfverur \u00ed sj\u00f3, me\u00f0al annars sandr\u00e6kja sem naut g\u00f3\u00f0s af hl\u00fdindunum \u00ed hafinu og hefur h\u00fan a\u00f0lagast hratt n\u00fdjum heimkynnum. Almennt m\u00e1 segja a\u00f0 drifkraftur n\u00fdli\u00f0unarsveiflnanna s\u00e9 sameiginlegur milli \u00f3l\u00edkra tegunda og \u00fearft er a\u00f0 sko\u00f0a sveiflurnar \u00e1 v\u00ed\u00f0um grunni.<\/p>\n

Um doktorsefni\u00f0<\/strong><\/p>\n

J\u00f3nas P\u00e1ll J\u00f3nasson lauk BSc-gr\u00e1\u00f0u \u00ed l\u00edffr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3la \u00cdslands \u00e1ri\u00f0 2001 og MSc-gr\u00e1\u00f0u \u00ed fiskifr\u00e6\u00f0i fr\u00e1 sama sk\u00f3la \u00e1ri\u00f0 2005. J\u00f3nas starfar sem s\u00e9rfr\u00e6\u00f0ingur \u00e1 Hafranns\u00f3knastofnun og ber m.a. \u00e1byrg\u00f0 \u00e1 og sinnir ranns\u00f3knum og stofnmati \u00e1 leturhumri, h\u00f6rpudisk og s\u00e6bj\u00fagum. Hann sinnir einnig kennslu og lei\u00f0beiningu vi\u00f0 Sj\u00e1var\u00fatvegssk\u00f3la \u00der\u00f3unarsamvinnumi\u00f0st\u00f6\u00f0var UNESCO \u00e1 \u00cdslandi, sem hefur a\u00f0setur \u00e1 Hafranns\u00f3knastofnun.<\/p>\n

J\u00f3nas er giftur dr. S\u00f3lveigu Gu\u00f0r\u00fanu Hannesd\u00f3ttur og eiga \u00feau fimm b\u00f6rn.<\/p>\n<\/div><\/div>","protected":false},"featured_media":4982,"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":"2021-01-20T14:00:00+00:00","_phd_date_end":"2021-01-20T16:00:00+00:00","_phd_location":"A\u00f0albygging H\u00e1t\u00ed\u00f0arsalur","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"Stofnsveiflur fiskungvi\u00f0is og hryggleysingja vi\u00f0 \u00cdsland (Population dynamics of fish juveniles and invertebrates in Icelandic waters)","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_liffraedi_jonas_pall_jonasson","_phd_source_node_id":"372501","_phd_source_type":"vidburdir","_phd_member_id":741,"footnotes":""},"phd_school":[96,93],"phd_discipline":[97],"class_list":["post-6217","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\/6217","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\/6217\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/4982"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6217"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6217"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}