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8:05 PM  October 10, 2019

Expedition with TSU participation find new fish habitats in the Arctic

© с сайта ВНИРОExpedition with TSU participation find new fish habitats in the Arctic

TOMSK, Oct 10 – RIA Tomsk. The largest Arctic maritime expedition in the history of Russia under the leadership of Biological Institute of Tomsk State University (BI TSU) employee Alexey Orlov revealed a change in the habitats of some animals; scientists brought four centners of samples for research on environmental changes, the university’s press service said on Thursday.

Earlier it was reported that a group of ichthyologists, oceanologists, geneticists, acoustics, hydrobiologists and hydrochemists go on an expedition aboard the research vessel "Professor Levanidov", studied aquatic biological resources in the Chukchi, East Siberian, Kara Seas and Laptev Seas. The expedition was led by the employee of the TSU Biological Institute and the Russian Federal Research Institute Of  Fishiries and Oceanography (VNIRO) Orlov.

According to the press service, the expedition lasted a hundred days and became the largest in the history of Russian Arctic marine research. During it, scientists noted that the influence of man and global climate change in the macro-region is becoming more noticeable. In particular, the absence of ice in most of the examined seas in September was unexpected.

"A change in the range of individual species has been noted. So, for the first time, scientists caught the blue catfish, also called the "sea wolf", and perch-beak in the Laptev Sea. The eastern border of their range is traditionally located in the Barents Sea, which is over two thousand kilometers away. In addition, The Laptev Sea was the first recorded pollock, which is a purely Far Eastern species", – is said in the report.

It is noted that in the northeastern part of the East Siberian Sea and throughout the Kara Sea researchers discovered the opilio shear crab previously not anticipated there. Moreover, the population of this species is so high that it may make possible its commercial catch in the near future.

"Scientists delivered 400 kilograms of frozen samples to the earth, the study of which will require not only a lot of time, but also significant finances. The results of these studies will help to comprehensively assess the state of natural resources, which is necessary for the reclamation and development of the Arctic", – notes the press service.

It is added that, based on the results of genetic research, the new data will also help scientists identify the causes of environmental changes.

© с сайта Томского госуниверситета
"Professor Levanidov" vessel

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