{"id":1332,"date":"2021-02-11T16:20:57","date_gmt":"2021-02-11T15:20:57","guid":{"rendered":"https:\/\/www.ntnu.no\/blogger\/teknat\/?p=1332"},"modified":"2021-02-11T16:24:09","modified_gmt":"2021-02-11T15:24:09","slug":"alger-som-gror-og-trives-uten-naering","status":"publish","type":"post","link":"https:\/\/www.ntnu.no\/blogger\/teknat\/2021\/02\/11\/alger-som-gror-og-trives-uten-naering\/","title":{"rendered":"Alger som gror og trives uten n\u00e6ring"},"content":{"rendered":"<h2>Er det de barske forholdene i Polarnatta som skaper denne hardbarka organismen?<\/h2>\n<p><a href=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-Svalbard.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-1336\" src=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-Svalbard.jpg\" alt=\"Natalie Summers i dykkerutstyr p\u00e5 Svalbard. Foto\" width=\"1500\" height=\"851\" srcset=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-Svalbard.jpg 1500w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-Svalbard-300x170.jpg 300w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-Svalbard-1024x581.jpg 1024w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-Svalbard-768x436.jpg 768w\" sizes=\"auto, (max-width: 1500px) 100vw, 1500px\" \/><\/a><\/p>\n<p>Med velkjente metoder, men i nye lysklima, jakter Natalie Summers p\u00e5 unike resultater i makroalgenes helse. Makroalgene som bor i Ny-\u00c5lesund p\u00e5 Svalbard, tilbringer flere m\u00e5neder uten sol under polarnatta. Summers pr\u00f8ver \u00e5 finne ut hvilken helsetilstand de er i l\u00f8pet av denne m\u00f8rke perioden og hvordan de klarer overgangen mellom m\u00f8rkere og lysere \u00e5rstider.<\/p>\n<h2>Polarlyset og endringer i algenes egenskaper<\/h2>\n<p>Natalie Summers rakk akkurat \u00e5 f\u00e5 med seg et tokt til Ny-\u00c5lesund p\u00e5 Svalbard f\u00f8r pandemien slo til. Hun fikk med seg 49 eksemplarer fra 8 alge-arter, hovedsakelig brune, r\u00f8de og gr\u00f8nne alger. Disse ble tatt opp i januar, i m\u00f8rketiden eller polarnatta som det heter, n\u00e5r det er s\u00e5 m\u00f8rkt d\u00f8gnet rundt at lyset ikke gir noe n\u00e6ring. Pr\u00f8vene er hentet fra havbunnen. I slutten av oktober fikk hun hentet ut nye pr\u00f8ver og kunne n\u00e5 se hvordan algene hadde det etter den lyseste perioden av \u00e5ret.<\/p>\n<p><a href=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/algae-rov.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-1341\" src=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/algae-rov.png\" alt=\"Undervannsbilde av gr\u00f8nne alger. Foto\" width=\"1493\" height=\"989\" srcset=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/algae-rov.png 1493w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/algae-rov-300x199.png 300w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/algae-rov-1024x678.png 1024w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/algae-rov-768x509.png 768w\" sizes=\"auto, (max-width: 1493px) 100vw, 1493px\" \/><\/a><\/p>\n<p>Hun tok med seg alge-artene inn i laben brukte et fluorometer som sender pulserende lys for \u00e5 m\u00e5le fotosyntese-parameterne hos algene. Lyset kan ha tre funksjoner hos algen: fotosyntese, fluorescens eller spre varme, der mesteparten av lyset g\u00e5r til fotosyntese. M\u00e5let er \u00e5 s\u00e5 hvordan den fotosyntetiske evnen til algeceller endrer seg med det spesielle lysklimaet p\u00e5 Svalbard, og hvor effektivt fotosyntesen foreg\u00e5r.<\/p>\n<p><a href=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-red-yellow-algae.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-1338\" src=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-red-yellow-algae.jpg\" alt=\"Natalie Summers unders\u00f8ker r\u00f8de og gule alger p\u00e5 laben. Foto\" width=\"1200\" height=\"837\" srcset=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-red-yellow-algae.jpg 1200w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-red-yellow-algae-300x209.jpg 300w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-red-yellow-algae-1024x714.jpg 1024w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-red-yellow-algae-768x536.jpg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/red-algae.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-1342\" src=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/red-algae.jpg\" alt=\"R\u00f8de alger p\u00e5 laben. Foto\" width=\"1500\" height=\"996\" srcset=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/red-algae.jpg 1500w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/red-algae-300x199.jpg 300w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/red-algae-1024x680.jpg 1024w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/red-algae-768x510.jpg 768w\" sizes=\"auto, (max-width: 1500px) 100vw, 1500px\" \/><\/a><\/p>\n<p>Fotosyntese er prosessen hvor planter og alger omgj\u00f8r lys-energi til kjemisk energi. I denne prosessen tar cellene opp CO<sub>2<\/sub> og vann, og lager glukose(sukker), som plantene trenger for \u00e5 vokse og overleve. Plantene slipper deretter oksygen som et biprodukt. Videre i prosessen blir en del av lyset sendt ut p\u00e5 nytt som fluorescens fra cellene, og n\u00e5r denne energien blir frigjort kan den m\u00e5les.<\/p>\n<h2>Arven etter Nansen \u2013 kunnskap om fortiden og n\u00e5tiden, for en b\u00e6rekraftig fremtid<\/h2>\n<p>Natalie Summers jobber som doktorgradsstipendiat ved Institutt for biologi ved NTNU, men hun er ogs\u00e5 en av <em>Arven etter Nansen<\/em>-rekruttene, som er 80 stipendiater og post-doktorer fra hele Norge. Arven etter Nansen har blant annet som m\u00e5l \u00e5 legge grunnlaget for en b\u00e6rekraftig forvaltning av det nordlige Barentshavet. 50 \u00e5rsverk jobber med \u00e5 opparbeide seg kunnskap om fortiden og n\u00e5tiden, for \u00e5 forst\u00e5 fremtiden. Arven etter Nansen er en reaksjon fra norske forskningsmilj\u00f8er p\u00e5 de store milj\u00f8endringene som skjer i Barentshavet og store deler av Arktis.<\/p>\n<figure id=\"attachment_1339\" aria-describedby=\"caption-attachment-1339\" style=\"width: 1500px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-diving-Svalbard.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1339 size-full\" src=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-diving-Svalbard.jpg\" alt=\"Natalie Summers dykker p\u00e5 Svalbard. Foto\" width=\"1500\" height=\"928\" srcset=\"https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-diving-Svalbard.jpg 1500w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-diving-Svalbard-300x186.jpg 300w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-diving-Svalbard-1024x634.jpg 1024w, https:\/\/www.ntnu.no\/blogger\/teknat\/wp-content\/uploads\/sites\/65\/2021\/02\/Summers-diving-Svalbard-768x475.jpg 768w\" sizes=\"auto, (max-width: 1500px) 100vw, 1500px\" \/><\/a><figcaption id=\"caption-attachment-1339\" class=\"wp-caption-text\">Foto: Andrea Faltynkova<\/figcaption><\/figure>\n<h2>Pandemi og veien videre<\/h2>\n<p>Da pandemien var et faktum ble alle forskningstokt avlyst og planene om \u00e5 hente ut pr\u00f8ver sommeren 2020 ble skrinlagt. Nye tokt med Arven etter Nansen er planlagt i mars og mai 2021 og denne gangen skal Summers se n\u00e6rmere p\u00e5 mikroalger, n\u00e6rmere bestemt planteplankton og is-alger. F\u00f8lg med videre for spennende publikasjoner fra Natalie Summers.<\/p>\n<h3>Lenker<\/h3>\n<p>&#8211; Les tidligere blogginnlegg fra Natalie Summers:<br><a href=\"https:\/\/www.ntnu.no\/blogger\/teknat\/en\/2020\/06\/12\/using-technology-to-map-ice-algae\/\">Using technology to map ice algae<\/a><br>&#8211; Les mer om <a href=\"https:\/\/arvenetternansen.com\">Arven etter Nansen<\/a><\/p>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Med velkjente metoder, men i nye lysklima, jakter Natalie Summers p\u00e5 unike resultater i makroalgenes helse. Makroalgene som bor i Ny-\u00c5lesund p\u00e5 Svalbard, tilbringer flere m\u00e5neder uten sol under polarnatta.<\/p>\n","protected":false},"author":13,"featured_media":1337,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[248,250,246],"class_list":["post-1332","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-biologi-nb","tag-alger-nb","tag-arktis-nb","tag-arven-etter-nansen-nb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Alger som gror og trives uten n\u00e6ring - NTNU TekNat<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ntnu.no\/blogger\/teknat\/2021\/02\/11\/alger-som-gror-og-trives-uten-naering\/\" \/>\n<meta property=\"og:locale\" content=\"nb_NO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alger som gror og trives uten n\u00e6ring - NTNU TekNat\" \/>\n<meta property=\"og:description\" content=\"Med velkjente metoder, men i nye lysklima, jakter Natalie Summers p\u00e5 unike resultater i makroalgenes helse. 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