Browsing Brage IMR by Author "Lowther, Andrew"

Now showing items 1-12 of 12

    • Antarctic krill and ecosystem monitoring survey off the South Orkney Islands in 2023 

      Krafft, Bjørn Arne; Pedersen, Ronald; Zhang, Guosong; Menze, Sebastian; Rasmussen, Astrid Fuglseth; Skaar, Hege; Dale, Julian; Biuw, Martin; Oosthuisen, Chris; Lowther, Andrew (Toktrapport;2023 - 8, Research report, 2023)
      Environmental monitoring along 5 set transect lines off South Orkney Islands in the Southern Ocean have been carried out annually (since 2011) by the Institute of Marine Research, Norway. Data are used to calculate biomass ...

    • 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 ...

    • Assessing the viability of estimating baleen whale abundance from tourist vessels 

      Henderson, Angus Fleetwood; Hindell, Mark Andrew; Wotherspoon, Simon; Biuw, Martin; Lea, Mary-Anne; Kelly, Nat; Lowther, Andrew (Peer reviewed; Journal article, 2023)
      Many populations of southern hemisphere baleen whales are recovering and are again becoming dominant consumers in the Southern Ocean. Key to understanding the present and future role of baleen whales in Southern Ocean ...

    • Bycatch in the Antarctic krill (Euphausia superba) trawl fishery 

      Krafft, Bjørn Arne; Lowther, Andrew; Krag, Ludvig A. (Peer reviewed; Journal article, 2022)
      Bycatch of nontarget species can contribute to overfishing and slow efforts to rebuild fish stocks. Controlling bycatch is fundamental to sustainable fishing and maintaining healthy populations of target species. 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 ...

    • Intra-season variations in distribution and abundance of humpback whales in the West Antarctic Peninsula using cruise vessels as opportunistic platforms 

      John Elling Deehr, Johannessen; Biuw, Martin; Lindstrøm, Ulf Ove; Ollus, Victoria Marja Sofia; Martín López, Lucía Martina; Gkikopoulou, Kalliopi C.; Oosthuizen, Wessel Chris; Lowther, Andrew (Peer reviewed; Journal article, 2022)
      Fine-scale knowledge of spatiotemporal dynamics in cetacean distribution and abundance throughout the Western Antarctic Peninsula (WAP) is sparse yet essential for effective ecosystem-based management (EBM). Cruise vessels ...

    • Large-scale seabird community structure along oceanographic gradients in the Scotia Sea and northern Antarctic Peninsula 

      Ollus, Victoria Marja Sofia; Biuw, Martin; Lowther, Andrew; Fauchald, Per; John Elling Deehr, Johannessen; Martín López, Lucía Martina; Gkikopoulou, Kalliopi C.; Oosthuizen, W. Chris; Lindstrøm, Ulf Ove (Peer reviewed; Journal article, 2023)
      The Scotia Sea and Antarctic Peninsula are warming rapidly and changes in species distribution are expected. In predicting habitat shifts and considering appropriate management strategies for marine predators, a community-level ...

    • Managing fishery development in sensitive ecosystems: identifying penguin habitat use to direct management in Antarctica 

      Trathan, Phil N.; Warwick-Evans, Victoria; Hinke, Jefferson Thomas; Young, Emma F.; Murphy, Eugene J.; Carneiro, Ana Paula B.; Dias, Maria P.; Kovacs, Kit M.; Lowther, Andrew; Godø, Olav Rune; Kokubun, Nobuo; Kim, Jeong-Hoon; Takahashi, Akinori; Santos, Mercedes (Journal article; Peer reviewed, 2018)
      In the Southern Ocean, the at‐sea distributions of most predators of Antarctic krill are poorly known, primarily because tracking studies have only been undertaken on a restricted set of species, and then only at a limited ...

    • Niches of marine mammals in the European Arctic 

      MacKenzie, Kirsteen M.; Lydersen, Christian; Haug, Tore; Routti, Heli Anna Irmeli; Aars, Jon; Andvik, Clare Margaret; Borgå, Katrine; Fisk, A.T.; Meier, Sonnich; Biuw, Martin; Lowther, Andrew; Lindstrøm, Ulf Ove; Kovacs, Kit M. (Peer reviewed; Journal article, 2022)
      The Arctic is warming rapidly, with concomitant sea ice losses and ecosystem changes. The animals most vulnerable to Arctic food web changes are long-lived and slow-growing such as marine mammals, which may not be able to ...

    • Niches of marine mammals in the European Arctic 

      MacKenzie, Kirsteen M.; Lydersen, Christian; Haug, Tore; Routti, Heli Anna Irmeli; Aars, Jon; Andvik, Clare Margaret; Borgå, Katrine; Fisk, A.T.; Meier, Sonnich; Biuw, Martin; Lowther, Andrew; Lindstrøm, Ulf Ove; Kovacs, Kit M. (Peer reviewed; Journal article, 2022)
      The Arctic is warming rapidly, with concomitant sea ice losses and ecosystem changes. The animals most vulnerable to Arctic food web changes are long-lived and slow-growing such as marine mammals, which may not be able to ...

    • Standing stock of Antarctic krill (Euphausia superba Dana, 1850) (Euphausiacea) in the Southwest Atlantic sector of the Southern Ocean, 2018-19 

      Krafft, Bjørn Arne; Macaulay, Gavin; Skaret, Georg; Knutsen, Tor; Bergstad, Odd A; Lowther, Andrew; Huse, Geir; Fielding, Sophie; Trathan, Philip; Murphy, Eugene; Choi, Seok-Gwan; Chung, Sangdeok; Han, Inwoo; Lee, Kyounghoon; Zhao, Xianyong; Wang, Xinliang; Ying, Yiping; Yu, Xiaotao; Demianenko, Kostiantyn; Podhornyi, Viktor; Vishnyakova, Karina; Pshenichnov, Leonid; Chuklin, Andrii; Shyshman, Hanna; Cox, Martin J; Reid, Keith; Watters, George M; Reiss, Christian S; Hinke, Jefferson T; Arata, Javier; Godø, Olav R; Hoem, Nils (Peer reviewed; Journal article, 2021)
      Estimates of the distribution and density of Antarctic krill (Euphausia superba Dana, 1850) were derived from a large-scale survey conducted during the austral summer in the Southwest Atlantic sector of the Southern Ocean ...

    • Wind-driven upwelling of iron sustains dense blooms and food webs in the eastern Weddell Gyre 

      Moreau, Sebastian; Hattermann, Tore; de Steur, Laura; Kauko, Hanna Maria; Ahonen, Heidi; Ardelan, Murat van; Assmy, Philipp; Chierici, Melissa; Descamps, Sebastien; Dinter, Tilman; Falkenhaug, Tone; Fransson, Agneta; Grønningsæter, Eirik; Hallfredsson, Elvar Halldor; Huhn, Oliver; Lebrun, Anais; Lowther, Andrew; Lübcker, Nico; Monteiro, Pedro; Peeken, Ilka; Roychoudhury, Alakendra; Różańska, Magdalena; Ryan-Keogh, Thomas; Sanchez Puerto, Nicolas; Singh, Asmita; Simonsen, Jan Henrik; Steiger, Nadine; Thomalla, Sandy J.; van Tonder, Andre; Wiktor, Josef M; Steen, Harald (Peer reviewed; Journal article, 2023)
      The Southern Ocean is a major sink of anthropogenic CO2 and an important foraging area for top trophic level consumers. However, iron limitation sets an upper limit to primary productivity. Here we report on a considerably ...