Marine fish shrink in size due to climate warming
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Marine fish shrink in size due to climate warming

September 13, 2023

Scientists say overall ocean biomass remains stable.

#ARCTIC. #SIBERIA. THIS IS TAIMYR. Scientists have found that climate change towards warming contributes to a decrease in the size of the deep-sea inhabitants. However, researchers say, this applies in general to all wild animals and plants, although to a lesser extent.

Scientists from the University of St. Andrews in Scotland, in collaboration with colleagues from Germany, Canada, Sweden and the United States, wrote about this trend. The results of the study, referred to by Rossiyskaya Gazeta, were published in the journal Science.

It is reported that the BioTIME database, which contains information on various species since 1960, was analyzed. In total, more than four thousand mammals, invertebrates, fish, amphibians, reptiles and plants were studied. As a result, scientists came to the conclusion that the body size of marine fish decreased most significantly: changes exceeded 10 percent.

Scientists have linked this to global warming. Similar trends were recorded in some species of plants and invertebrates. At the same time, as the researchers note, the size of Arctic plants, on the contrary, has increased. It is also clarified that the average body size has changed within populations, but at the community level the abundance of species with small and large bodies has changed. Ocean biomass remains generally stable.

Previously, scientists discovered plankton dangerous to humans in Russian waters, this is associated with the warming of the ocean. In the coming years, oceanologists predict a change in the Gulf Stream.

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Text: Elena Popova, Photo: Olga Polyanskaya

September 13, 2023

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