Thursday, February 28, 2013

Bumblebees disappearing in Midwest

Plight of the American bumblebee: Disappearing? | Boston Herald

Plight of the American bumblebee: Disappearing?
February 28, 2013
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WASHINGTON — It's not just honey bees that are in trouble. The fuzzy American bumblebee seems to be disappearing in the Midwest.
Two new studies in Thursday's journal Science conclude that wild bees, like the American bumblebee, are increasingly important in pollinating flowers and crops that provide us with food. And, at least in the Midwest, they seem to be dwindling in an alarming manner, possibly from disease and parasites.
Wild bees are difficult to track so scientists have had a hard time knowing what's happening to them. But because of one man in a small town in Illinois in the 1890s, researchers now have a better clue.
Naturalist Charles Robertson went out daily in a horse-drawn buggy and meticulously collected and categorized insects in Carlinville in southern Illinois.
More than a century later, Laura Burkle of Montana State University went back to see what changed. Burkle and her colleagues reported that they could only find half the species of wild bees that Robertson found — 54 of 109 types.
"That's a significant decline. It's a scary decline," Burkle said Thursday.
And what's most noticeable is the near absence of one particular species, the yellow-and-black American bumblebee. There are 4,000 species of wild bees in America and 49 of them are bumblebees. In the Midwest, the most common bee has been Bombus pensylvanicus, known as the American bumblebee. It only stings defensively, experts say.
But in 447 hours of searching, Burkle's team found only one American bumblebee, a queen.
That fits with a study that University of Illinois entomologist Sydney Cameron did two years ago when she found a dramatic reduction in the number and range of the American bumblebee.
"It was the most dominant bumblebee in the Midwest," Cameron said, saying it now has pretty much disappeared from much of its northern range. Overall, its range has shrunk by about 23 percent, although it is still strong in Texas and the West, she said.
"People call them the big fuzzies," Cameron said. "They're phenomenal animals. They can fly in the snow."
Her research found four species of bumblebees in trouble: the American bumblebee, the rusty-patched bumblebee, the western bumblebee and the yellow-banded bumblebee.
A separate Science study by a European team showed that wild bees in general have a larger role in pollinating plants than the honey bees that are trucked in to do the job professionally.
Those domesticated bees are already in trouble with record high prices for bees to pollinate California almond trees, said David Inouye at the University of Maryland.
Scientists suspect a combination of disease and parasites for the dwindling of both wild and domesticated bees.
___
Online:
Science: http://www.sciencemag.org
- See more at: http://bostonherald.com/news_opinion/national/2013/02/plight_of_the_american_bumblebee_disappearing?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+bostonherald%2Fnews+(News+%26+Opinion+-+BostonHerald.com)#sthash.j4LjYyAk.dpuf
Plight of the American bumblebee: Disappearing?
February 28, 2013
 2  1 googleplus0 reddit0
WASHINGTON — It's not just honey bees that are in trouble. The fuzzy American bumblebee seems to be disappearing in the Midwest.
Two new studies in Thursday's journal Science conclude that wild bees, like the American bumblebee, are increasingly important in pollinating flowers and crops that provide us with food. And, at least in the Midwest, they seem to be dwindling in an alarming manner, possibly from disease and parasites.
Wild bees are difficult to track so scientists have had a hard time knowing what's happening to them. But because of one man in a small town in Illinois in the 1890s, researchers now have a better clue.
Naturalist Charles Robertson went out daily in a horse-drawn buggy and meticulously collected and categorized insects in Carlinville in southern Illinois.
More than a century later, Laura Burkle of Montana State University went back to see what changed. Burkle and her colleagues reported that they could only find half the species of wild bees that Robertson found — 54 of 109 types.
"That's a significant decline. It's a scary decline," Burkle said Thursday.
And what's most noticeable is the near absence of one particular species, the yellow-and-black American bumblebee. There are 4,000 species of wild bees in America and 49 of them are bumblebees. In the Midwest, the most common bee has been Bombus pensylvanicus, known as the American bumblebee. It only stings defensively, experts say.
But in 447 hours of searching, Burkle's team found only one American bumblebee, a queen.
That fits with a study that University of Illinois entomologist Sydney Cameron did two years ago when she found a dramatic reduction in the number and range of the American bumblebee.
"It was the most dominant bumblebee in the Midwest," Cameron said, saying it now has pretty much disappeared from much of its northern range. Overall, its range has shrunk by about 23 percent, although it is still strong in Texas and the West, she said.
"People call them the big fuzzies," Cameron said. "They're phenomenal animals. They can fly in the snow."
Her research found four species of bumblebees in trouble: the American bumblebee, the rusty-patched bumblebee, the western bumblebee and the yellow-banded bumblebee.
A separate Science study by a European team showed that wild bees in general have a larger role in pollinating plants than the honey bees that are trucked in to do the job professionally.
Those domesticated bees are already in trouble with record high prices for bees to pollinate California almond trees, said David Inouye at the University of Maryland.
Scientists suspect a combination of disease and parasites for the dwindling of both wild and domesticated bees.
___
Online:
Science: http://www.sciencemag.org
- See more at: http://bostonherald.com/news_opinion/national/2013/02/plight_of_the_american_bumblebee_disappearing?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+bostonherald%2Fnews+(News+%26+Opinion+-+BostonHerald.com)#sthash.j4LjYyAk.dpuf

 To read full article click on "Plight of the ------" above. I couldn't quote article here.

The biggest toll on Bees of all kinds worldwide appear to be certain types of insecticides. A second factor is all the weather changes. But without wild bees like Bumblebees to pollinate wild plants those plants will go extinct in some areas around the world. If that happened over time this likely could lead to erosion as the plants tend to hold the soil in place in many areas over the earth. Though beekeepers might keep enough bees to pollinate our crops it was said recently that over 50% of all domesticated bees in the U.S. were used at one time to pollinate just the almond crop in California which supplies 80% of the almonds grown worldwide. If you start to contemplate this problem not only for growing food but also the damage of no bumblebees on wild native plants not domesticated then you can see the world is in for it in more than one way unless a way is found to address the worldwide lack of bees to pollinate anything.

 
Plight of the American bumblebee: Disappearing?
February 28, 2013
 2  1 googleplus0 reddit0
WASHINGTON — It's not just honey bees that are in trouble. The fuzzy American bumblebee seems to be disappearing in the Midwest.
Two new studies in Thursday's journal Science conclude that wild bees, like the American bumblebee, are increasingly important in pollinating flowers and crops that provide us with food. And, at least in the Midwest, they seem to be dwindling in an alarming manner, possibly from disease and parasites.
Wild bees are difficult to track so scientists have had a hard time knowing what's happening to them. But because of one man in a small town in Illinois in the 1890s, researchers now have a better clue.
Naturalist Charles Robertson went out daily in a horse-drawn buggy and meticulously collected and categorized insects in Carlinville in southern Illinois.
More than a century later, Laura Burkle of Montana State University went back to see what changed. Burkle and her colleagues reported that they could only find half the species of wild bees that Robertson found — 54 of 109 types.
"That's a significant decline. It's a scary decline," Burkle said Thursday.
And what's most noticeable is the near absence of one particular species, the yellow-and-black American bumblebee. There are 4,000 species of wild bees in America and 49 of them are bumblebees. In the Midwest, the most common bee has been Bombus pensylvanicus, known as the American bumblebee. It only stings defensively, experts say.
But in 447 hours of searching, Burkle's team found only one American bumblebee, a queen.
That fits with a study that University of Illinois entomologist Sydney Cameron did two years ago when she found a dramatic reduction in the number and range of the American bumblebee.
"It was the most dominant bumblebee in the Midwest," Cameron said, saying it now has pretty much disappeared from much of its northern range. Overall, its range has shrunk by about 23 percent, although it is still strong in Texas and the West, she said.
"People call them the big fuzzies," Cameron said. "They're phenomenal animals. They can fly in the snow."
Her research found four species of bumblebees in trouble: the American bumblebee, the rusty-patched bumblebee, the western bumblebee and the yellow-banded bumblebee.
A separate Science study by a European team showed that wild bees in general have a larger role in pollinating plants than the honey bees that are trucked in to do the job professionally.
Those domesticated bees are already in trouble with record high prices for bees to pollinate California almond trees, said David Inouye at the University of Maryland.
Scientists suspect a combination of disease and parasites for the dwindling of both wild and domesticated bees.
___
Online:
Science: http://www.sciencemag.org
- See more at: http://bostonherald.com/news_opinion/national/2013/02/plight_of_the_american_bumblebee_disappearing?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+bostonherald%2Fnews+(News+%26+Opinion+-+BostonHerald.com)#sthash.j4LjYyAk.dpuf
Plight of the American bumblebee: Disappearing?
February 28, 2013
 2  1 googleplus0 reddit0
WASHINGTON — It's not just honey bees that are in trouble. The fuzzy American bumblebee seems to be disappearing in the Midwest.
Two new studies in Thursday's journal Science conclude that wild bees, like the American bumblebee, are increasingly important in pollinating flowers and crops that provide us with food. And, at least in the Midwest, they seem to be dwindling in an alarming manner, possibly from disease and parasites.
Wild bees are difficult to track so scientists have had a hard time knowing what's happening to them. But because of one man in a small town in Illinois in the 1890s, researchers now have a better clue.
Naturalist Charles Robertson went out daily in a horse-drawn buggy and meticulously collected and categorized insects in Carlinville in southern Illinois.
More than a century later, Laura Burkle of Montana State University went back to see what changed. Burkle and her colleagues reported that they could only find half the species of wild bees that Robertson found — 54 of 109 types.
"That's a significant decline. It's a scary decline," Burkle said Thursday.
And what's most noticeable is the near absence of one particular species, the yellow-and-black American bumblebee. There are 4,000 species of wild bees in America and 49 of them are bumblebees. In the Midwest, the most common bee has been Bombus pensylvanicus, known as the American bumblebee. It only stings defensively, experts say.
But in 447 hours of searching, Burkle's team found only one American bumblebee, a queen.
That fits with a study that University of Illinois entomologist Sydney Cameron did two years ago when she found a dramatic reduction in the number and range of the American bumblebee.
"It was the most dominant bumblebee in the Midwest," Cameron said, saying it now has pretty much disappeared from much of its northern range. Overall, its range has shrunk by about 23 percent, although it is still strong in Texas and the West, she said.
"People call them the big fuzzies," Cameron said. "They're phenomenal animals. They can fly in the snow."
Her research found four species of bumblebees in trouble: the American bumblebee, the rusty-patched bumblebee, the western bumblebee and the yellow-banded bumblebee.
A separate Science study by a European team showed that wild bees in general have a larger role in pollinating plants than the honey bees that are trucked in to do the job professionally.
Those domesticated bees are already in trouble with record high prices for bees to pollinate California almond trees, said David Inouye at the University of Maryland.
Scientists suspect a combination of disease and parasites for the dwindling of both wild and domesticated bees.
___
Online:
Science: http://www.sciencemag.org
- See more at: http://bostonherald.com/news_opinion/national/2013/02/plight_of_the_american_bumblebee_disappearing?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+bostonherald%2Fnews+(News+%26+Opinion+-+BostonHerald.com)#sthash.j4LjYyAk.dpuf

Antarctic Warming linked to Greenhouse Gas

Past Antarctic Warming Linked to Greenhouse Gas

Rising carbon dioxide levels may have caused Antarctic warming in the past, new research strongly suggests.
The findings, published today (Feb. 28) in the journal Science, just add to the body of evidence that human-caused greenhouse gas emissions will lead to climate change.
"It's new evidence from the past of the strong role of CO2 [carbon dioxide] in climate variation," said study co-author Frédéric Parrenin, a climate scientist at the CNRS in France.
Past data
Eons of the Earth's climate history are revealed deep within ice sheets in the Arctic and Antarctic. The Antarctic ice traps gas bubbles from the climate that can reveal what the ancient atmosphere looked like, while the ice itself can reveal historical temperatures.
But gas bubbles from a given period get buried deeper than ice of the same period, making it hard to tie past temperatures with atmospheric changes.
In the past, scientists using older techniques found that increases in carbon dioxide happened after global warming, not the reverse. [Images of Melt: Earth's Vanishing Ice]
Past link
But Parrenin and his colleagues wondered whether that was actually the case. To answer that question, the team looked at five ice cores that had been drilled from Antarctica over the last 30 years.
They focused on ice from 20,000 to 10,000 years ago, which encompassed the last period when the planet warmed naturally and glaciers melted.
The team measured the concentration of nitrogen-15 isotopes, or atoms of the same element with different weights, at different depths throughout the ice cores. They compared the depth of that isotope with the ice composition for all the cores to determine the distance between ice bubbles and ice from the same period.
Global warming
The team found that global warming and a carbon dioxide increase happened at virtually the same time — between 18,000 and 11,000 years ago.
"It makes it possible that CO2 was the cause — at least partly — of the temperature increase during the courses of the last glaciation," Parrenin told LiveScience.
And if increased carbon dioxide could lead to rising temperatures in the past, it also can in the present day, he said.
The findings may deflate some climate skeptics, who used the poor dating of ice cores to question the link between carbon dioxide and warming, said Robert Mulvaney, a glaciologist with the British Antarctic Survey, who was not involved in the study.
It also confirmed the view of most climate scientists that in the past, rising temperatures and carbon dioxide were locked in a feedback loop, where high temperatures led to more carbon dioxide being released from the deep oceans, which increased temperatures further, Mulvaney said.
But because predictions of future warming are based on recent carbon dioxide and temperature data, not historical models, "it hasn't really changed anything about our understanding of how climate change will change our modern environment." Mulvaney told LiveScience.
Follow Tia Ghose on Twitter @tiaghoseor LiveScience @livescience. We're also on Facebook & Google+
Copyright 2013 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
end quote from:
http://news.yahoo.com/past-antarctic-warming-linked-greenhouse-gas-195641461.html

Beijing Air Pollution Hazardous to Health

Beijing Air Pollution Tops Hazardous Levels Days Before Congress

Bloomberg - ‎21 hours ago‎
Beijing's air pollution climbed to hazardous levels days before the national legislature opens its annual meeting, drawing new attention to environmental degradation that the government has promised to address.
Pollution Expected on China's Congress Agenda
The most shocking photo of Beijing air pollution I've ever seen - by Max Fisher

Van Allen Probes discover surprise circling Earth

NASA's Van Allen Probes discover a surprise circling Earth

Science Codex - ‎4 hours ago‎
After most NASA science spacecraft launches, researchers wait patiently for months as instruments on board are turned on one at a time, slowly ramped up to full power, and tested to make sure they work at full capacity.
Van Allen Belts: How Little We Knew Ye
Radiation ring around Earth mysteriously appears, then dissipates

Mind Meld Rats

Mind Meld Rats: Rodents Brains 'Talk' to One Another Across Thousands of Miles

Latinos Post - ‎40 minutes ago‎
(Photo : Flickr Creative Commons) Duke researchers received a $26 million grant from the Pentagon's Defense Advanced Research Projects Agency (DARPA) to investigate "brain-machine interfaces.
In a First, Experiment Links Brains Of Two Rats
Electronic Brain Link Lets Rats Send Each Other Thoughts
One rat brain 'talks' to another using electronic link
Brains of rats connected allowing them to share information via internetThe Gu

Mind Meld Rats: Rodents Brains 'Talk' to One Another Across Thousands of Miles

By Cole Hill | First Posted: Feb 28, 2013 09:46 PM EST
(Photo : Flickr Creative Commons) Duke researchers received a $26 million grant from the Pentagon's Defense Advanced Research Projects Agency (DARPA) to investigate "brain-machine interfaces."
A new study was able to successfully "mind meld" the brains of two rats across thousands of miles, sending signals through the rodents' brains that allowed them to communicate and help one another solve problems, according to Nature.com. Somewhere, "Star Trek" fans are saying, "Well, duh."
By inputting two rats' brains with electrode implants about the width of a hair, scientists from Duke University built on existing research to create the first-ever "brain-link." Researchers designated one rat as a "message sender" and another as a "decoder" and then studied if the rat receiving the signal could correctly decipher the information.
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"We basically created a computational unit out of two brains," said lead researcher Duke University Prof. Miguel Nicolelis, according to Wired.
"Until recently we used to record this brain activity and send it to a computer... and the [computer] tells us what the animal is going to do," Prof Nicolelis told the BBC.
"So we reasoned, if we can do that with a computer, could another brain do that?"
To truly test his experiment, Nicolelis wired the brain of a rat in Brazil to a rat at Duke, to see if the rats could successfully communicate motor and sensory cues to one another to solve problems, sending the signals across the Internet. After the rats underwent some rigorous training for a little over a month, the "decoder" rat was able to accurately interpret the "message sender" rat's information, and mimic its behavior to find water and turn on a light that it otherwise would have never known about, according to The Huffington Post.
"[It] takes about 45 days of training an hour a day," explained Prof Nicolelis. "There is a moment in time when... it clicks. Suddenly the [decoder] animal realizes: 'Oops! The solution is in my head. It's coming to me' and he gets it right."
Nicolelis and his team of scientists received a $26 million grant from the Pentagon's Defense Advanced Research Projects Agency (DARPA) to research "brain-machine interfaces." Other experts in the field have said the scientific ramifications of his experiment are impressive and exciting, to say the least.
"From an engineering perspective, the work is a remarkable demonstration that animals can use brain-to-brain communication to solve a problem, said Mitra Hartmann, a biomedical engineer at Northwestern University.
"From a scientific point of view, the study is noteworthy for the large number of important questions it raises, for example, what allows neurons to be so 'plastic' that the animal can learn to interpret the meaning of a particular stimulation pattern," Hartmann said.
end quote from:

Mind Meld Rats: Rodents Brains 'Talk' to One Another Across Thousands of Miles