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Heat waves: annihilate biodiversity

Heat waves: annihilate biodiversity


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Real heat bubbles, more and more widespread, which cause a series of long-term damage. Drought, health risks, increased mortality, losses in agriculture are among the most direct consequences. But it doesn't stop there.

Now, a new study has shown how prolonged and repeated heat waves violently hit ocean life, exterminating it, just like "fires that destroy large areas of forest”.

The impact of heat waves on ocean biodiversity: the study

From a meteorological point of view, a heat wave is a period of atmospheric time characterized by unusually high temperatures, above the usual values ​​recorded in a particular region. When the heat bubbles affect seas and oceans, we witness a rise in the temperature of the water of these ecosystems, which becomes exceptionally hot. From the new research, titled "Marine heatwaves threaten global biodiversity and the provision of ecosystem services" and published on Nature Climate Change, it emerged that the effects of heat waves have significantly amplified in recent decades. For thirty years now, heatwaves have increased by as much as 54 percent, bringing with them a noticeable decline in ocean biodiversity.

The experts examined 116 previous studies, obtaining data on over a thousand cases. The scientists focused on the periods of more than five days when the oceans reached exceptionally high temperatures. The so-called was also included in the analysis "Blob", an ’huge mass of hot water caused by the increase in ozone levels, which has upset the natural balance of the Pacific, decimating flora and fauna along the American coast.

As explained by Professor Thomas Wernberg from the University of Western Australia, co-author of the study together with Dan Smale of the Marine Biological Association of Plymouth, the heat waves "they restructure ecosystems, kill large numbers of animals and plants, and can have long-lasting implications“.

The researchers quantified the presence of biodiversity in the various areas through pre-existing data. Their attention has mainly focused on regions characterized by a particularly high wealth of oceanic life. These are, in fact, the areas that are most at risk of deterioration, with high mortality levels which can lead to domino effects on the surrounding ecosystems.

Based on the findings, there are three habitats in which biodiversity has been most affected by water warming: coral reefs of the Caribbean, the kelp forests off the coast of California and the sea ​​herbs in Australia. A loss that, according to experts, will only increase the amount of carbon dioxide present in the atmosphere.

In addition to the clear environmental damage, the reduction in biodiversity also affects populations whose survival is closely linked to ocean resources in terms of nutrition, protection from storms and the removal of greenhouse gases.

Heatwaves in Europe

The consequences of heat waves are worrying. But what is also alarming is the fact that these climatic events are destined to become more and more frequent and close together, due to the global climate change in progress. A worrying picture that closely concerns Europe itself.

From May to July to 2018, our continent was affected by several heat waves, with anomalous temperature peaks that also involved the most northerly countries, such as Denmark, Ireland, Holland, Norway, Finland and Sweden.

Precisely on the atypical temperatures recorded in the nations of northern Europe, a preliminary study conducted by World Weather Attribution. The result that emerged from the models examined appeared threateningly alarming: in the northern regions of Europe, the climate change doubled the chances of abnormal heat waves occurring. With all the terrible consequences of the case.


Video: Your city is a sponge (May 2022).


Comments:

  1. Whitley

    Remove everything that does not concern the subject.

  2. Temi

    A fascinating message

  3. Alhhard

    It no more than reserve

  4. Alphenor

    I apologize, but this variant does not come close to me. Who else can say what?

  5. Nerg

    This has already been discussed recently.

  6. Arashimuro

    Exclusive delirium, in my opinion



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