News / Science & Technology

Crop Pests, Diseases Move to Higher Latitudes

Warmer conditions brought on by climate change are producing more hospitable environments for pests such as the emerald ash borer (seen here).
Warmer conditions brought on by climate change are producing more hospitable environments for pests such as the emerald ash borer (seen here).
Insects and diseases that attack food crops are moving to higher latitudes as climate change alters their habitats, according to a new study published in Nature Climate Change.

With the bulk of the world’s agricultural production today taking place in the temperate zones, the study raises questions about future food security in a warming world.

Plant diseases alone claim an estimated 10 to 16 percent of the world’s crops in the field, experts say, and destroy another 6 to 12 percent after harvest.

Meanwhile, research has shown wild plants and animals are moving toward the poles as the planet gets warmer.

And the U.S. Department of Agriculture is adjusting northward its map of zones suitable for growing certain crops.

“That got us thinking,” said biologist Dan Bebber at the University of Exeter in Britain. “Is a similar process occurring with pests and pathogens that attack our agricultural crops?”

Hundreds of pests

To find out, Bebber turned to reports of first sightings of new insects and diseases around the world. The data came from the agriculture research organization CABI, which began collecting the information from developing and industrialized countries about a century ago and now tracks hundreds of pests and pathogens around the world.

Bebber and his colleagues studied 612 of them - from viruses and bacteria to beetles and butterflies - and found that since 1960, they had shifted toward the poles at an average rate of about 3 kilometers per year.

That puts some of the most productive farmland in the world in danger.

“As new species of pests and diseases evolve and potentially the environment for them becomes more amenable at higher latitudes, the pressure on the breadbaskets of the world is going to increase,” Bebber said.

Invasive hospitality

Farmers have other emerging threats to deal with, as well. Invasive species introduced through global trade and mobility also are a threat to crops. Entomologist Gene Kritsky at Ohio's College of Mount St. Joseph said climate change may make the environment more hospitable for some invasive species.

“It means that species in other parts of the world that might do well in warmer temperatures can now do well in the breadbasket of America.”

Kritsky was not involved in the research, but said it confirms what he’s seen in the field. He added that more species will be able to survive the winters at higher latitudes as temperatures increase.

'We should do something'

Entomologist Christian Krupke at Purdue University in Indiana pointed out that the effects of these shifts will depend very much on the crop, the pest and the disease.

But he said that the research is another warning sign of what may be in store for the future.  

“I think a lot of these papers are all pointing in the same direction that are all saying, ‘OK, we should care about climate change. We should do something other than zero,’” he said.

You May Like

WHO: Anti-Ebola Efforts Should Focus on West Africa

Official says WHO is 'reasonably confident' countries bordering those hardest hit by the Ebola outbreak are not seeing the virus crossing their borders More

South Sudan Crisis Threatens Development

Economic costs and lost development opportunities in South Sudan have erased what little progress the country has made since independence in 2011 More

Ukrainian PM Warns: Russia May Try to Disrupt Sunday Poll

Arseniy Yatsenyuk orders full security mobilization for parliamentary election to prevent ‘terrorist acts’ from being carried out More

This forum has been closed.
Comment Sorting
Comments
     
by: John M from: Annapolis, MD
September 05, 2013 7:22 PM
Climate change is occurring at a faster rate than many species are able to adapt. http://clmtr.lt/cb/wST0bJd


by: Babu G. Ranganathan
September 04, 2013 10:34 AM
GLOBAL WARMING MAY NOT BE MAN MADE
Dr. Larry Vardiman (scientist and physicist) of the Institue for Creation Research says:

"One possible scenario may be found in a recent series of articles by Henrik Svensmark and Nigel Marsh, cosmic ray specialists from Denmark, who have shown an indirect connection between galactic cosmic ray (GCR) intensity and global temperature.7,8,9 They are studying the influence of the Sun on the flow of GCR to Earth. The Sun's changing sunspot activity influences the magnetosphere surrounding the Earth permitting more GCR to strike the Earth during high periods of activity.

When the Sun is active, the intensity of GCR striking the Earth is increased, causing more ionization in the atmosphere, creating more carbon-14, and possibly creating more cloud condensation nuclei (CCN). This increase in CCN, in turn, appears to create more low-level clouds which cool the Earth. When the Sun is quiet the GCR intensity striking the Earth is reduced, allowing the Earth to warm. Svensmark and Marsh have shown a striking statistical correlation between sunspot activity and global cooling and warming over the past 1000 years.

The recent rise in global temperature may partially be due to current low solar activity supplemented by a recent increase in carbon dioxide concentration measured at Mauna Loa. The connection which still needs further study is the production of CCN and clouds by GCR." There is a good deal of science showing that global warming is not mad made. Yes, we still should have pollution controls, as we already do, but not to the extreme because it will unnecessarily hurt business. Visit my newest Internet site: THE SCIENCE SUPPORTING CREATION
Babu G. Ranganathan
B.A. Bible/Biology
Author of popular Internet article, TRADITIONAL DOCTRINE OF HELL EVOLVED FROM GREEK ROOTS

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
After Decades of Pressure, Luxembourg Drops Bank Secrecy Rulesi
X
October 21, 2014 12:20 AM
European Union finance ministers have reached a breakthrough agreement that will make it more difficult for tax cheats to hide their money. The new legislation, which had been blocked for years by countries with a reputation as tax havens, was approved last week after Luxembourg and Austria agreed to lift their vetoes. But as Mil Arcega reports, it doesn’t mean tax cheats have run out of places to keep their money hidden.
Video

Video After Decades of Pressure, Luxembourg Drops Bank Secrecy Rules

European Union finance ministers have reached a breakthrough agreement that will make it more difficult for tax cheats to hide their money. The new legislation, which had been blocked for years by countries with a reputation as tax havens, was approved last week after Luxembourg and Austria agreed to lift their vetoes. But as Mil Arcega reports, it doesn’t mean tax cheats have run out of places to keep their money hidden.
Video

Video Kobani Refugees Welcome, Turkey Criticizes, US Airdrop

Residents of Kobani in northern Syria have welcomed the airdrop of weapons, ammunition and medicine to Kurdish militia who are resisting the seizure of their city by Islamic State militants. The Turkish government, however, has criticized the operation. VOA’s Scott Bobb reports from southeastern Turkey, across the border from Kobani.
Video

Video China Political Meeting Seeks to Improve Rule of Law

China’s communist leaders will host a top level political meeting this week, called the Fourth Plenum, and for the first time in the party’s history, rule of law will be a key item on the agenda. Analysts and Chinese media reports say the meetings could see the approval of long-awaited measures aimed at giving courts more independence and include steps to enhance an already aggressive and high-reaching anti-corruption drive. VOA’s Bill Ide has more from Beijing.
Video

Video US ‘Death Cafes’ Put Focus on the Finale

In contemporary America, death usually is a topic to be avoided. But the growing “death café” movement encourages people to discuss their fears and desires about their final moments. VOA’s Jerome Socolovsky reports.
Video

Video Ebola Orphanage Opens in Sierra Leone

Sierra Leone's first Ebola orphanage has opened in the Kailahun district. Hundreds of children orphaned since the beginning of the Ebola outbreak face stigma and rejection with nobody to care for them. Adam Bailes reports for VOA about a new interim care center that's aimed at helping the growing number of children affected by Ebola.
Video

Video Young Nairobi Tech Innovator on 'Track' in Security Business

A 24-year-old technology innovator in Nairobi has invented a tracking device that monitors and secures cars. He has also come up with what he claims is the most robust audio-visual surveillance system yet. As Lenny Ruvaga reports from the Kenyan capital, his innovations are offering alternative security solutions.
Video

Video Latinas Converting to Islam for Identity, Structure

Latinos are one of the fastest growing groups in the Muslim religion. According to the Pew Research Center, about 6 percent of American Muslims are Latino. And a little more than half of new converts are female. VOA’s Carolyn Presutti travelled to Miami, Florida -- where two out of every three residents is Hispanic -- to learn more.
Video

Video Exclusive: American Joins Kurds' Anti-IS Fight

The United States and other Western nations have expressed alarm about their citizens joining Islamic State forces in Syria and Iraq. In a rare counterpoint to the phenomenon, an American has taken up arms with the militants' Syrian Kurdish opponents. Elizabeth Arrott has more in this exclusive profile by VOA Kurdish reporter Zana Omer in Ras al Ayn, Syria.
Video

Video South Korea Confronts Violence Within Military Ranks

Every able-bodied South Korean male between 18 and 35 must serve for 21 to 36 months in the country’s armed forces, depending upon the specific branch. For many, service is a rite of passage to manhood. But there are growing concerns that bullying and violence come along with the tradition. Reporter Jason Strother has more from Seoul.
Video

Video North Carolina Emerges as Key Election Battleground

U.S. congressional midterm elections will be held on November 4th and most political analysts give Republicans an excellent chance to win a majority in the U.S. Senate, which Democrats now control. So what are the issues driving voters in this congressional election year? VOA National Correspondent Jim Malone traveled to North Carolina, one of the most politically competitive states in the country, to find out.
Video

Video Comanche People Maintain Pride in Their Heritage

The Comanche (Indian nation) once were called the “Lords of the Plains,” with an empire that included half the land area of current day Texas, large parts of Oklahoma, New Mexico, Kansas and Colorado.The fierceness and battle prowess of these warriors on horseback delayed the settlement of most of West Texas for four decades. VOA’s Greg Flakus reports from Lawton, Oklahoma, that while their warrior days are over, the 15,000 members of the Comanche Nation remain a proud people.
Video

Video Turkey Campus Attacks Raise Islamic Radicalization Fears

Concerns are growing in Turkey of Islamic radicalization at some universities, after clashes between supporters of the jihadist group Islamic State (IS) or ISIS, and those opposed to the extremists. Pro-jihadist literature is on sale openly on the streets of Istanbul. Critics accuse the government of turning a blind eye to radicalism at home, while Kurds accuse the president of supporting IS - a charge strongly denied. Henry Ridgwell reports from London.

All About America

AppleAndroid