Dogs and drones join forest battle against eight-toothed beetle

Smaller than your nails, but this hairy insect is one of the biggest threats towards England’s forests.

Bark Beetle killed millions of spruce trees and became a scourge of Europe, but the government thought that it could stop its spread to England by controlling imported wooden products in ports.

But this was not their way of entrance – they were transported directly on the British channel on winds.

Now, British government scientists are struggling with an unusual arsenal, including sniffer dogs, drones and nuclear waste models.

They claim that England has eliminated the insect from the risk areas in the East and South East. However, climate change can make it even more difficult in the future.

Spruce Bark Beetle or IPS Typographus has been passing through a trail of destruction by passing through Europe’s conifer trees for decades.

Insects feed back and young people under the shell of the spruce trees in complex networks of intertwined tunnels called galleries.

When the trees are invaded with a few thousand insects, they can cope using resin to wash insects.

However, for a stressful tree, their natural defenses decrease and insects begin to multiply.

“Populations may reach a point where they can overcome tree defenses – millions, billions of insects,” funded by the United Kingdom, Forestry Research Forestry Research.

“There are many things that the tree cannot cope with them, especially when it is dry, there is no resin pressure to clean the galleries.”

Since Beetle was held in Norway ten years ago, 100 million cubic meters of spruce could be erased, According to Rothamted Research.

Since Sitka Spruce was the main tree used for timber in the UK, Dr. Blake and his colleagues followed the developments in continental Europe with a serious concern.

“There is only 725,000 hectares of spruce, if this insect is allowed to handle it, the destructive potential means that it is at a great risk,” the Andrea Deol said in the forest research. He said. “We valued it – and in Great Britain, a partial valuation of £ 2.9 billion per year.”

There are more than 1,400 pests and diseases in the government’s health risk recording, but IPS labeled “number one public enemy”.

According to Nick Phillips in Charity the Woodland Trust, the number of these diseases is accelerating.

“Mainly, this is because we import global trade, wooden products, trees for planting, which sometimes brings ‘hitchhiking’ in terms of pests and illness.” He said.

Forestry research has been working with boundary control to control such products for IPS for years, but in 2018, a shocking discovery in a wood in the city.

“We’ve found a reproductive population that has been there for a few years,” Mrs. Deol explained.

“Then we started to buy a larger amount of insects [our] Traps showing that they came in other ways. All our research right now has shown that the wind has been blown up from the continent. “

The team knew that they had to move quickly, and he’s using a technical mixture that wouldn’t be involved in a military operation.

Hundreds of hectares of hectares are sent to investigate forests, searches for signs of invasion from the sky – insect holding, the top shade of the tree cannot be fed with nutrients and water and begins to die.

However, the next, the careful work of the entomologists who go to the trees to examine themselves.

“They are looking for a needle in a haystack, sometimes they are looking for single insects – to keep them before they are allowed to establish pioneering species.” He said.

Within a year, the team examined 4,500 hectares of spruce in public property – shy from only 7,000 football fields.

It is difficult to maintain such physical demands, and the team is looking for some help from both the natural and technology world.

When pioneering spruce shell beetles find a suitable host tree, they release the pheromones – chemical signals to attract other insects and build a colony.

However, in addition to this strong odor, the smell associated with insect poops – Frass – this makes them ideal for them to be found by Sniffer Dogs.

The first trials so far have been successful. Dogs are particularly useful to examine large piles of wood that may be difficult to visually control.

The team also uses cameras in insect traps that can now make daily scanning for insects and define them in real time.

“We have [created] Our own algorithm to identify insects. We have received about 20,000 images of IPs, other insects and debris, officially defined and fed by the entomologists and fed to the model. “

Some traps may be difficult to access, and it was controlled by entomologists working on the ground every week before.

As a result of this study, it means that it is confirmed as the first country to eliminate IPS typography in UK’s controlled areas and is thought to be under the risk of invasion. It covers South East and East England.

“What we do is important to have a positive effect and to continue to continue this effort, if we disappoint our protector, we know that we have risks of attack every year.” He said.

And these risks are increasing. Europe saw that IPS populations increased as it benefited from trees emphasized by the changing climate.

Europe is experiencing more rainfall and lighter temperatures in winter, so there is less freezing, leaving the trees in irrigated conditions.

This is combined with dry summers, leaving them stressful and sensitive to falling in stormy weather, and this is the time when IPs can be held.

The risk of transporting IPS colonies to the UK with larger populations in Europe is increasing.

The Forestry Research team is working hard to correctly predict when these attacks may occur.

“We are modeling with his colleagues and the Met Office that adapts the IPS to his colleagues and the nuclear atmospheric dispersion model at the University of Cambridge.” “For this reason, [the model] Initially, it was used to look at where the nuclear sprinkler and winds take it, instead we use the model to look at how long IPs go. “

Nick Phillips in Woodland Trust strongly supports the government’s work, but is worried about the loss of old forest areas, the oldest and most richest areas of the forest.

Commercial spruce has been planted next to such forests for a long time, and whenever there was a tree with spruce beetles, and the neighboring, sometimes old trees should be removed.

“We want the government to maintain as much as possible, especially when the trees are removed, especially when the trees are removed, we support them to take steps to restore the landowners there.” He said. “Thus, for example, they are given grants to save forest areas.”

In recent years, the government has increased funds for forest areas, but these new trees have focused on planting.

“If we have financing and support for the first few years of the life of a tree, but not for the 100 or century -year -old forested areas, we will not be able to heal and capture carbon.”

Additional Reporting Miho Tanaka