The occurrence, abundance, biomass and size composition of six boreal fish species (walleye pollock , Pacific cod , northern wolffish , beaked redfish , Greenland halibut , glacier lanternfish ) in the Siberian and Pacific Arctic are presented based on the analysis of open databases (OBIS, GBIF and FishBase) and the results of scientific surveys of TINRO 1977–2020. In open databases, information on the records of these species is available mainly for the eastern Chukchi Sea and the Beaufort Sea and is practically absent for the seas of the Siberian Arctic, which is due to technical reasons. Data from long–term surveys of TINRO indicate the extension of the ranges of North Atlantic species eastward and North Pacific species westward indicating the ongoing borealization of the Siberian Arctic due to a changing climate. At the species level, it can lead to the overlap of the ranges of the “western” and “eastern” populations of Greenland halibut, as well as the ranges of Pacific and Greenland cods, which will make it possible to exchange genetic material between these populations/species and will contribute to the disappearance of genetic differences between them.

中文翻译：

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西伯利亚北极海洋鱼类动物群的持续北方化：进一步的证据


基于开放数据库（OBIS）的分析，介绍了西伯利亚和太平洋北极六种北方鱼类（白斑狭鳕、太平洋鳕鱼、北狼鱼、喙红鱼、格陵兰大比目鱼、冰川灯笼鱼）的出现、丰度、生物量和大小组成。 、GBIF 和 FishBase）以及 TINRO 1977-2020 科学调查结果。在开放数据库中，这些物种的记录信息主要存在于楚科奇海东部和波弗特海，而由于技术原因，西伯利亚北极海域几乎没有这些物种的记录信息。 TINRO 的长期调查数据表明，北大西洋物种的分布范围向东扩展，北太平洋物种的分布范围向西扩展，这表明由于气候变化，西伯利亚北极正在持续北化。在物种层面，它可能导致格陵兰大比目鱼“西部”和“东部”种群的分布范围重叠，以及太平洋和格陵兰鳕鱼的分布范围重叠，这将使这些鱼类之间的遗传物质交换成为可能。种群/物种，并将有助于消除它们之间的遗传差异。