Warn on crash & accident disaster check & # 39; of species of global insects



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Paris – Almost half of the micro-tropical species around the world rapidly decline and a third can disappear completely, according to a survey warning of adverse effects on top pollination and natural food chains.

"If we do not change the way we make food, all insects will reduce the route to be extinct in a few decades," the study concluded -members, which are set for publication in the & # 39; April.

The recent decline in insects that are infected. fly, broadcast, & # 39; Excavation and waste over water remains part of the "huge decline" collection, but the sixth year in the last half billion years.

"We have shown evidence of the biggest event that has disappeared on Earth since Permian and Cretaceous times," said the authors.

The Permian game killed 252 million years ago more than 90% of life names to planet, as long as the Cretaceous boundaries saw 66 million years ago on the decline of land dinosaurs.

"We estimate that a current proportion of insective species is declining – 41% – being twice as high as those of abrasives," said Francisco Sanchez -But University of Sydney and Kris Wyckhuys from Queensland University in Australia.

"At this time, one third of the insecticidal species are at risk."

An additional 1% participate in their levels each year, they are respect. Towel bias – general weight – which declines every year with around 2.5% worldwide.

"Activity alone can not prevent a catastrophe of natural ecosystems," the authors were injured.

The restoration of deserted areas and a significant reduction in the use of poisoning and chemical fertilizers is the best way to move the use of insect pesticides, they said.

& # 39; Almost all insects left & # 39;

The study, published in the Biological Conservation magazine, drew together data from more than 70 data formats from around the globe, some dating back over a hundred years.

With a large edge, habitat change – deforestation, urbanization, turn to farmland – as the biggest cause of insect downturn and death threat.

After that, there was pollution and the extensive use of pesticides in commercial agriculture.

The recent research, for example, was found to find a number of bird species in France through the use of insects on crops such as wheat, barley, corn and wine.

"Almost no insects are left – that's the only problem," said Vincent Bretagnolle, ecoologist at the Center for Biological Experience.

Experts suggest that flying insects across Europe have reduced by 80% on their; average, causing the number of birds to release over 400 million in three decades.

There are very few species of insects – especially in the tropics – are considered to have been affected by climate change, and some in the northern extremity of the range extend them as warm temperatures.

In the long run, however, scientists are afraid of global warming to be another major driver of pesticide.

So far, most of the biodiversity loss concerns have been at & # 39; focus on major mammals, birds and amphibians.

Fung beetles deeper

But insects contain about two-thirds of all types of land, and have formed the basis of the major ecosystems since they started over 400 million years ago.

"Often, the researchers have said that the essential work that insects to play as food items of invertebrates can be forgotten," said the researchers.

Peat, hedgehogs, cats, berries, amphibians, and most bats, many birds and fish; feed insects or depend on them for a & # 39; raising their children.

Other insects that may be filled can not be completed; bypassing a boat with a # 39; reducing species compounded for the sharp fall in bio-thomas, the study said.

Foodstuffs are also the best in the world – 75% of 115 food crops around the world are responsible for pollinating animals, including cocoa, coffee, almonds and cherries. One species of sex bees disappears all over the world.

Fung beetles in the Mediterranean coast are also particularly tangible, with more than 60% of species being hit; falling in numbers.

The pace of reducing the bridges in tropical and moderate climate seems to be, although there is much more information from North America and Europe than the rest of the world.

Britain has seen a decent decline across 60% of the core media, taxa, and then with North America (51%) and in Europe as a whole (44%).

AFP

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