Krill, Climate, and Contrasting Future Scenarios for Arctic and Antarctic Fisheries ...

• Main Authors: McBride, Margaret M., Dalpadado, Padmini, Drinkwater, Ken, Godø, Olav Rune, Hobday, Alistair, Kristiansen, Trond, Murphy, Eugene, Subbey, Sam
• Format: Conference Object
• Language: unknown
• Published: ASC 2013 - Theme session B 2024
• Subjects: The sea and human culture and societies; Pressures, impacts, conservation, and management; Antarctic; Arctic; Antarc*; Antarctic Krill; Climate change; Sea ice; Zooplankton; Copepods
• Online Access: https://dx.doi.org/10.17895/ices.pub.24753018.v1; https://ices-library.figshare.com/articles/conference_contribution/Krill_Climate_and_Contrasting_Future_Scenarios_for_Arctic_and_Antarctic_Fisheries/24753018/1

No abstracts are to be cited without prior reference to the author. Arctic and Antarctic marine systems have in common high latitudes, large seasonal changes in light levels, cold air/ sea temperatures, and sea ice. In other ways they are strikingly different, including: geological structure; ice stability; and food webs. Both regions contain rapidly warming areas; reported climate impacts and future projections are dramatic. Effects of changing climate on oceanographic processes and food webs influence their fisheries in different ways. Life-history strategies of zooplankton (Antarctic krill and Calanus copepods in the Arctic) may affect future fisheries productivity. To explore potential future scenarios for each region; this paper: 1) considers characteristics (geographic, physical, biological) defining these ecosystems, and reviews impacts of climate change on key zooplankton; 2) summarizes existing fisheries; 3) synthesizes this information to envisage future scenarios; 4) considers implications for ...