Pests, attack, the mankind plants for food, creeping edge of coat at an average rate of almost 2 miles (3) per year for the past 50 years, after a new study of hundreds of harmful organisms in the magazine nature climate change was his.
The main cause for the spread of insects, fungi, and viruses is people with grain and farming equipment transport, but the broad swathe of the species move also seems coat edge on the back of global warming, go, that makes it possible that these pests to make were simply too cold in times long past, in places, the researchers say.
A total of were from the University of Exeter Daniel Bebber, Sarah Ryan and Mark Ramotowski Oxford of University examined 612 pests and pathogens. This is the first study of so many Sch?dlinge--including fungi, bacteria, viruses, viroids, water, mold, insects, and nematodes --find a climate-related development. What they found was that the average coat edge shift 2.7 kilometers (1.7 miles) per year since 1960, with significant differences between the pests. There were a few nematodes and viruses, which were in the other direction, but they were in the minority.
The danger the pests pose is alarming, because most of the biggest are today not really grown in the world to fight against new pathogens, said Ahmad who is fungi researchers.
"In the process of increasing food production, we have huge monocultures, for example wheat," said Gurr. "These genetically limited plants are very vulnerable."
The situation is not much different than if the water tool caused the Irish potato famine of the 1840s, or the fungus Helminthosporium oryzae of Bengal famine of 1943 large led, she said Phytophthora infestans. Huge fields to create genetically limited and identical plants, we have the conditions for another disaster will be.
"We have the arms race to the mushrooms at an angle," said Ahmad, adding that it is a natural reservoir between 1.5 and 5.1 million species of the fungus out.
What's more is, while farmers are quick to recognize a new agent, the edge of the mantle is spread not only on farms.
"What worried me is that there is a lot of these in natural systems that we don't see," said entomologist John Trumble of the University of California, Riverside. No one is simply a box in Audacity natural systems with as much attention as they do for example monitoring.
Forests in North America have in many forms, already Trumble says, with newly introduced pests remove entire species from some landscapes.
Said fortunately we are not helpless against the onslaught, Gurr. The best defense is, more frequent and better controls and more on transportation of materials and plants. Some countries such as Australia, do very well and can serve as a model for others, she said. When considering what is at stake and how global warming is helping the pests, there is no time to lose.
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