Ecological and biochemical adaptations of aquatic organisms and changes in trophic relationships in the Arctic under climate change

Lead Author Svetlana A., Murzina
Institution Contact Institute of Biology Karelian Research Centre of the Russian Academy of Sciences Pushkinskaya street 11 Petrozavodsk Russia 185910
Co-Authors Svetlana N. Pekkoeva, Institute of Biology of Karelian Research Centre of the Russian Academy of Sciences, Russia; Zinaida A. Nefedova, Institute of Biology of Karelian Research Centre of the Russian Academy of Sciences, Russia; Maria V. Churova, Institute of Biology of Karelian Research Centre of the Russian Academy of Sciences, Russia; Olga V. Meschecheryakova, Institute of Biology of Karelian Research Centre of the Russian Academy of Sciences, Russia; Stig Falk-Petersen, Akvaplan-niva AS, Fram Centre, Norway; Jorgen Berge, The Arctic University of Norway (UiT), The University Centre in Svalbard (UNIS), Norway; Ole J. Lønne, The Arctic University of Norway (UiT), The University Centre in Svalbard (UNIS), Norway; Nina N. Nemova, Institute of Biology of Karelian Research Centre of the Russian Academy of Sciences, Russia;
Theme Theme 1: Vulnerability of Arctic Environments
Session Name 1.1 Climate Change and Environmental Management in the Arctic
Presentation Type Poster
Abstract text Climate change has special influence on high latitudes of the Northern hemisphere. The changes of temperature and salinity, stratification of water bodies, sedimentation processes, duration of ice free season will lead to change of light conditions and the period of phytoplankton bloom rising and duration. They will influence the quantity and distribution of biogenic elements and producing capacity of the Arctic ecosystems. The study of mechanisms of adaptation to the complex of environmental factors among aquatic organisms of high latitudes will afford to assess their ability of effective adaptation to life in these conditions. The work was aimed to register and interpret the changes of lipids and fatty acids, activity of enzymes of carbohydrate and energetic metabolism of the key marine organisms of the Arctic and Sub-Arctic (the White Sea) that are connected by food relations: copepods, the White Sea herring Clupea pallasimaris albi, bottom-living fish Lumpenus fabricii and Leptoclinus maculatus as an answer to the specific conditions of habitation in high latitudes as well as the complex of ecological factors that are typical for modern climate in ontogenetic and comparative aspects. The studied biochemical parameters of metabolism in aquatic organisms as well as processes of transformation and transfer of lipids through the food chains is important in terms of understanding of optimal functioning of all metabolic systems of organism under the conditions of changing environmental factors. Such research is significant in relation to the fundamental knowledge and for solution of practical tasks of biomonitoring in the Arctic. The study was carried out using facilities of the Equipment Sharing Centre of the IB KarRC RAS. The research was made in the frame of the budgetary theme № 0221-2014-0003 and supported by the Programme of fundamental research of the Presidium RAS № 114061940010; RFBR № 14-04-00473; the «SpitsEco» project (ES 504895).