MOSCOW, Oct. 4 -. RIA Novosti Increasing temperature water in the Pacific Ocean due to global warming may make the water in the western US coast of almost unfit for life of animals and dangerous for humans because of the rapid algal blooms and water pollution "zombie acid," says in an article published in the journal ofGeophysical Research Letters.
"Every three to five years before it happened, and other incidents of toxic algae, which has forced Washington's power and Oregon restrict catch shellfish. But on the other side of what happened here last year, it was a completely different event on the scale and strength of effects, and our research shows that it was due to the unusual weather conditions in the ocean "- says Ryan McCabe (Ryan McCabe) from the University of Washington in Seattle (USA).
Flowering water cause brown or blue-green algae that live in freshwater lakes and reservoirs, as well as in sea water. With the explosive growth of the number of cyanobacteria and brown algae in the water there are extensive patches, which may pose a threat to human and animal health due to the toxins that emit algae in the water, clearing a "living space".
It is thought that climate change and, in particular, the rise in water temperature will contribute to more frequent algae blooms, but all the climatic effects of these spots are still unknown. McCabe and his colleagues presented evidence in favor of what is really going on, trying to figure out what caused the outbreak of algal blooms heavy-duty off the west coast of the USA in the spring and winter of 2015.
The culprit of all problems, as they say, scientists have been kind of algae Pseudo-nitzschia australis, whose cells during flowering produce large amounts of the neurotoxin the DA, the so-called "zombie acid". The molecules of this substance is easily accumulate in fish and shellfish tissues of the body, and their eating mammals, birds or humans causes hallucinations, spasms and death.
Intrigued flash reproduction of these algae, the researchers looked at how and where to grow Pseudo-nitzschia australis in the past and tried to determine the factors that affect their reproduction, including human activities. The analysis carried out McCabe's group demonstrated that the outbreak in the activity of these algae mainly occur at abnormally high water temperatures during the winter and summer.
These episodes were associated with flowering three things - the climate phenomenon El Nino, global warming and ocean water pollution by fertilizers and other nutrients. Global warming plays a special role because it heats the water of the Pacific Ocean itself and also further enhances the El Niño phenomenon, which leads to even more warming waters.
In recent years, the temperature of surface waters as they note, was above normal by 2.5 degrees Celsius, and in the following decades and centuries, this deviation will only grow with the increase of average temperatures on Earth.
Accordingly, the frequency of algae stains and pollution of the Pacific Ocean "zombie acid" and other toxins will only grow. Therefore, if humanity will not be able to stop climate change, the US West Coast may be a "dead zone", polluted by toxic secretions of brown algae and dangerous to animal and human life.
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