Browsing Brage IMR by Author "Renner, Angelika"
Now showing items 1-20 of 26
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Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate
McBride, Margaret; Stokke, Olav Schram; Renner, Angelika; Krafft, Bjørn Arne; Bergstad, Odd Aksel; Biuw, Martin; Lowther, Andrew; Stiansen, Jan Erik (Peer reviewed; Journal article, 2021)Antarctic krill Euphausia superba, a keystone species in the Southern Ocean, is highly relevant for studying effects of climate-related shifts on management systems. Krill provides a key link between primary producers and ... -
Arctic Observations Identify Phytoplankton Community Composition as Driver of Carbon Flux Attenuation
Wiedmann, Ingrid; Ceballos-Romero, E.; Villa-Alfageme, M.; Renner, Angelika; Dybwad, Christine; van der Jagt, Helga; Svensen, Camilla; Assmy, Philipp; Wiktor, Josef; Tatarek, Agnieszka; Różańska‐Pluta, M.; Iversen, Morten H. (Peer reviewed; Journal article, 2020)The attenuation coefficient b is one of the most common ways to describe how strong the carbon flux is attenuated throughout the water column. Therefore, b is an essential input variable in many carbon flux and climate ... -
Climate change and new potential spawning sites for Northeast Arctic cod
Sandø, Anne Britt; Johansen, Geir Odd; Aglen, Asgeir; Stiansen, Jan Erik; Renner, Angelika (Peer reviewed; Journal article, 2020)In this study we investigate both historical and potential future changes in the spatial distribution of spawning habitats for Northeast Arctic cod (NEA cod) based on a literature study on spawning habitats and different ... -
Cruise report Hywind Tampen 13 to 28 March 2023 - Cruise no. 2023001004 G.O. Sars
Utne-Palm, Anne Christine; Søiland, Henrik; Sveistrup, Anne; Renner, Angelika; Ross, Rebecca; Moy, Frithjof Emil; Paskyabi, Mosttafa Bakhoday; Totland, Atle; Hannaas, Sigurd; de Jong, Karen; Gonzalez-Mirelis, Genoveva; Hovland, Terje; Pedersen, Geir; Wilhelmsen, Jan Frode; Majaneva, Markus; Heum, Sverre Waardal; Skjold, William; Vågenes, Stig; Skaret, Georg; Corus, Finn; Voronkov, Andrey; Kielland, Leonard (Toktrapport;2023 - 10, Research report, 2023)There is very little knowledge related to how floating windfarms effect the marine environment as this is such a new “product”. Thus, the data that we gathered on this cruise will be novel in that sense. The aim of the ... -
Development of methods relevant to feedback management (FBM) for the krill fishery
Krafft, Bjørn Arne; Lowther, Andrew; Macaulay, Gavin; Chierici, Melissa; Biuw, Martin; Renner, Angelika; klevjer, tor; Øyerhamn, Rune; cardenas, cecar; makhado, arata; Reiss, Christian; Bergstad, Odd Aksel (Research report, 2018)The primary objective for this project is to develop knowledge on the marine environment essential for the implementation of a Feed-Back Management (FBM) system. In terms of FBM, Marine Protected Area (MPA) development in ... -
Drivers of Interannual Sea Ice Concentration Variability in the Atlantic Water Inflow Region North of Svalbard
Lundesgaard, Øyvind; Sundfjord, Arild; Renner, Angelika (Peer reviewed; Journal article, 2021)Sea ice concentration along the continental margin of the Arctic Ocean is influenced by a multitude of factors, including local freezing and melting due to atmospheric forcing, lateral advection of sea ice by winds and ... -
Environmental controls on macrozooplankton and fish distributions over diurnal to seasonal time scales in the northern Barents Sea
Cannaby, Heather Anne; Ingvaldsen, Randi Brunvær; Lundesgaard, Øyvind; Renner, Angelika; Skaret, Georg; Sakinan, Serdar S.; Chierici, Melissa; Gjøsæter, Harald (Peer reviewed; Journal article, 2023)We present acoustic observations obtained by bottom mounted echosounders at two locations in the northern Barents Sea and a third on the northern continental slope of the Barents Sea. Data collected over a period of ... -
Fifteen research needs for understanding climate change impacts on ecosystems and society in the Norwegian High North
Kebir, Zina Asnah; Chambers, Catherine; Frainer, André; Hausner, Vera Helene; Lennert, Ann Eileen; Lento, Jennifer; Poste, Amanda; Ravolainen, Virve; Renner, Angelika; Thomas, David N.; Waylen, Kerry (Peer reviewed; Journal article, 2023)There is an urgent need to understand and address the risks associated with a warming climate for ecosystems and societies in the Arctic and sub-Arctic regions. There are major gaps in our understanding of the complex ... -
From Winter to Late Summer in the Northwestern Barents Sea Shelf: Impacts of Seasonal Progression of Sea Ice and Upper Ocean on Nutrient and Phytoplankton Dynamics
Koenig, Zoe Charlotte; Muilwijk, Morven; Sandven, Håkon Johan; Lundesgaard, Øyvind; Assmy, Philipp Kurt Wolf; Lind, Sigrid Gjessing; Assmann, Karen; Chierici, Melissa; Fransson, Agneta; Gerland, Sebastian; Jones, Elizabeth Marie; Renner, Angelika; Granskog, Mats (Peer reviewed; Journal article, 2023)Strong seasonality is a key feature of high-latitude systems like the Barents Sea. While the interannual variability and long-term changes of the Barents Sea are well-documented, the seasonal progression of the physical ... -
Hydrography, inorganic nutrients and chlorophyll a linked to sea ice cover in the Atlantic Water inflow region north of Svalbard
Renner, Angelika; Bailey, Allison Michelle; Reigstad, Marit; Sundfjord, Arild; Chierici, Melissa; Jones, Elizabeth Marie (Peer reviewed; Journal article, 2023) -
Import of Atlantic Water and sea ice controls the ocean environment in the northern Barents Sea
Lundesgaard, Øyvind; Sundfjord, Arild; Lind, Sigrid; Nilsen, Frank; Renner, Angelika (Peer reviewed; Journal article, 2022)The northern Barents Sea is a cold, seasonally ice-covered Arctic shelf sea region that has experienced major warming and sea ice loss in recent decades. Here, a 2-year observational record from two ocean moorings provides ... -
Inorganic carbon and nutrient dynamics in the marginal ice zone of the Barents Sea: Seasonality and implications for ocean acidification
Jones, Elizabeth Marie; Chierici, Melissa; Fransson, Agneta; Assmann, Karen; Renner, Angelika; Hodal, helene (Peer reviewed; Journal article, 2023)The Barents Sea is a productive Arctic shelf sea experiencing Atlantification with ocean warming, sea ice loss and increased influence of Atlantic Water. The impact of these changes on inorganic carbon and nutrient dynamics ... -
Large scale patches of Calanus finmarchicus and associated hydrographic conditions off the Lofoten archipelago
Weidberg, Nicholas; Santana Hernandez, Nestor; Renner, Angelika; Falk‑Petersen, Stig; Basedow, Sünnje Linnéa (Peer reviewed; Journal article, 2022)Large swarms of individuals at different spatiotemporal scales characterise the distributions of many animal species. In the ocean several mesozooplankton taxa aggregate in large patches or swarms driven by active behavioural ... -
Late summer sea ice segmentation with multi-polarisation SAR features in C- and X-band
Fors, Ane Schwenke; Brekke, Camilla; Doulgeris, Anthony Paul; Eltoft, Torbjørn; Renner, Angelika; Gerland, Sebastian (Journal article; Peer reviewed, 2016-02-17)In this study, we investigate the potential of sea ice segmentation by C- and X-band multi-polarisation synthetic aperture radar (SAR) features during late summer. Five high-resolution satellite SAR scenes were recorded ... -
Multidisciplinary perspectives on living marine resources in the Arctic
Kvamsdal, Sturla Furunes; Dankel, Dorothy Jane; Ekerhovd, Nils-Arne; Hoel, Alf Håkon; Renner, Angelika; Sandø, Anne Britt; Steinshamn, Stein Ivar (Peer reviewed; Journal article, 2022)Many areas in the Arctic are vulnerable to the impacts of climate change. We observe large-scale effects on physical, biological, economic and social parameters, including ice cover, species distributions, economic activity ... -
The One Ocean Expedition: Science and Sailing for the Ocean We Want
Huse, Geir; Baussant, Thierry; Becker, Meike; Biuw, Martin; Bødtker, Gunhild; Cook, Jeremy; Gomiero, Alessio; Grøsvik, Bjørn Einar; Handegard, Nils Olav; Hestnes, Arne Johan; Hole, Lars Robert; Husson, Berengere; Jaccard, Pierre Franqois; Johannessen, Johnny Andre; Krolicka, Adriana; Lien, Vidar Surén; Lindemann, Christian; Olsen, Are; Renner, Angelika; Lid, Sjur Ringheim; Steen-Larsen, Hans Christian; Strand, Espen; Westgaard, Jon-Ivar; Pedersen, Geir (Rapport fra havforskningen;2023 - 34, Research report, 2023)The One Ocean Expedition (OOE) was a 20-month long circumnavigation of the globe by the Norwegian sail training vessel Statsraad Lehmkuhl, and a recognised part of the UN decade of Ocean Science for Sustainable Development. ... -
Pelagic ecosystem dynamics between late autumn and the post spring bloom in a sub-Arctic fjord
Walker, Emily-Zoe Elizabeth; Wiedmann, Ingrid; Nikolopoulos, Anna; Skardhamar, Jofrid; Jones, Elizabeth Marie; Renner, Angelika (Peer reviewed; Journal article, 2022)Marine ecosystems, and particularly fjords, are experiencing an increasing level of human activity on a year-round basis, including the poorly studied winter period. To improve the knowledge base for environmentally ... -
Protocols for trawl sampling, recording of biological data, and hydrography for the 2019 international synoptic krill survey in Area 48
Knutsen, Tor; Krafft, Bjørn Arne; Renner, Angelika; Skaret, Georg; macaulay, gavin; Bergstad, Odd Aksel (CCAMLR;WG-EMM-18/23, Research report, 2018)Experience gained through participation in international programmes like BIOMASS and the CCAMLR 2000 Survey has demonstrated that standardization of equipment and methods is one of the most crucial steps for any successful ... -
Regional melt-pond fraction and albedo of thin Arctic first-year drift ice in late summer
Divine, Dmitry V; Granskog, Mats A.; Hudson, Stephen R.; Pedersen, Christina Alsvik; Karlsen, Tor Ivan; Divina, S.A.; Renner, Angelika; Gerland, Sebastian (Journal article; Peer reviewed, 2015-02-09)The paper presents a case study of the regional (≈150 km) morphological and optical properties of a relatively thin, 70–90 cm modal thickness, first-year Arctic sea ice pack in an advanced stage of melt. The study combines ... -
Report from a krill focused survey with RV Kronprins Haakon and land-based predator work in Antarctica during 2018/2019
Krafft, Bjørn Arne; Bakkeplass, Kjell Gunnar; Berge, Terje; Biuw, Martin; Erices, Julio Alberto; Jones, Elizabeth Marie; Knutsen, Tor; Kubilius, Rokas; Kvalsund, Merete; Lindstrøm, Ulf; Macaulay, Gavin; Renner, Angelika; Rey, Alina; Søiland, Henrik; Wienerroither, Rupert; Ahonen, Heidi; Goto, Jade; Hoem, Nils; Huerta, Magdelena; Höfer, Juan; Iden, Oda; Jouanneau, William; Kruger, Lucas; Liholt, Håvard; Lowther, Andy; Makhado, Azwianewi B.; Mestre, Mireia; Narvestad, Audun; Oosthuisen, Chris; Rodrigues, Jose; Øyerhamn, Rune (Rapport fra havforskningen;2019 - 21, Research report, 2019)The primary objective for this krill research activity was twofold 1) to conduct a survey that provides updated estimates of the biomass and distribution of krill which are used in models to estimate sustainable yield in ...