The Baltic sea is threatened with ecological disaster

Балтийскому морю грозит экологическая катастрофа

Scientists estimate that the dead zones in the sea where there is no oxygen has reached a total area of 70 thousand square kilometers.

Scientists from Finland and Germany came to the conclusion that the coastal areas of the Baltic sea over the last hundred years have experienced an “unprecedented serious” loss of oxygen. About the study published in the journal Biogeosciences, according to the European Union of Earth Sciences.

It is noted that the last period of deoxygenation (loss of oxygen) in the Baltic sea began in the 1950-ies, as previously thought, but in 1900s. it is particularly intensive process due to human factors took place in the late twentieth century.

Scientists came to this conclusion after studying the four-meter core retrieved from the bottom of the archipelago sea (part of the Baltic sea between the Finnish and Bothnia gulfs).

The investigated sample has allowed to estimate oxygen vibrations in the region over the past 1.5 thousand years.

Experts note that human influence is the main cause of the loss of oxygen in the Baltic sea during the last hundred years. According to them the reason for the growth of “dead zones”, which left almost all kinds of marine life, is the discharge of domestic, industrial and agricultural wastewater.

Experts also recognize that, despite the reduction of anthropogenic pressures in recent years, the oxygen content in the water practically does not increase. The reason for this they see in the global climate change.

In such conditions significantly reduce deoxygenation can only further reduce human impact.

The ice at the poles is melting at a record. Cause and effect

Earlier, scientists have found that global warming could lead to catastrophic fall of the level of dissolved oxygen in sea water and the mass extinction of marine fauna.

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