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dog poop

NEW CU-BOULDER STUDY REVEALS BACTERIA FROM DOG FECES IN OUTDOOR AIR OF URBANIZED AREAS

Aug 18th

Posted by Channel 1 Networks in Crime

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NEW CU-BOULDER STUDY REVEALS BACTERIA FROM DOG FECES IN OUTDOOR AIR OF URBANIZED AREAS

Bacteria from fecal material — in particular, dog fecal material — may constitute the dominant source of airborne bacteria in Cleveland’s and Detroit’s wintertime air, says a new University of Colorado Boulder study.

The CU-Boulder study showed that of the four Midwestern cities in the experiment, two cities had significant quantities of fecal bacteria in the atmosphere — with dog feces being the most likely source.

“We found unexpectedly high bacterial diversity in all of our samples, but to our surprise the airborne bacterial communities of Detroit and Cleveland most closely resembled those communities found in dog poop,” said lead author Robert Bowers, a graduate student in CU-Boulder’s ecology and evolutionary biology department and the CU-headquartered Cooperative Institute for Research in Environmental Sciences, or CIRES. “This suggests that dog poop may be a potential source of bacteria to the atmosphere at these locations.”

The study was published July 29 in Applied and Environmental Microbiology. Co-authors on the study included Noah Fierer, an assistant professor in CU-Boulder’s ecology and evolutionary biology department and a CIRES fellow; Rob Knight, an associate professor in CU-Boulder’s chemistry and biochemistry department; Amy Sullivan and Jeff Collett Jr. of Colorado State University; and Elizabeth Costello of the Stanford University School of Medicine.

Scientists already knew that bacteria exist in the atmosphere and that these bacteria can have detrimental effects on human health, triggering allergic asthma and seasonal allergies, Fierer said. But it is only in recent years that researchers have realized that there is an incredible diversity of bacteriaresiding in the air, he said.

“There is a real knowledge gap,” said Fierer. “We are just starting to realize this uncharted microbial diversity in the air — a place where you wouldn’t exactly expect microbes to be living.”

To gain further understanding of just what microbes are circulating in urban environments, the team analyzed the local atmosphere in the summer and winter at four locations in the Great Lakes region of the U.S. Three of the locations — Chicago, Cleveland and Detroit — are major cities with populations of greater than 2 million, and one location, Mayville, Wis., is a small town with a population of less than 6,000.

The team used nearly 100 air samples collected as part of a previous study conducted by Colorado State University. The CSU experiment investigated the impact of biomass burning and involved studying the impacts of residential wood burning and prescribed fires on airborne fine particle concentrations in the midwestern United States.

“What we’ve been looking at are the numbers and the types of bacteria in the atmosphere,” Fierer said. “We breathe in bacteria every minute we are outside, and some of these bugs may have potential health implications.”

The researchers analyzed the bacteria’s DNA in the collected air samples and compared the bacteria they found against a database of bacteria from known sources such as leaf surfaces, soil, and human, cow and dog feces. They discovered that the bacterial communities in the air were surprisingly diverse and also that, in two of the four locations, dog feces were a greater than expected source of bacteria in the atmosphere in the winter.

In the summer, airborne bacteria come from many sources including soil, dust, leafsurfaces, lakes and oceans, Bowers said. But in the winter, as leaves drop and snow covers the ground, the influence that these environments have as sources also goes down. It is during this season that the airborne communities appeared to be more influenced by dog feces than the other sources tested in the experiment, he said.

“As best as we can tell, dog feces are the only explanation for these results,” Fierer said. “But we do need to do more research.”

The team plans to investigate the bacterial communities in other cities and to build a continental-scale atlas of airborne bacterial communities, Fierer said. “We don’t know if the patterns we observed in those sites are unique to those cities,” he said. “Does San Francisco have the same bacteria as New York? Nobody knows as yet.”

Fierer believes it is important to pin down the types of bacteria in the air, how these bacteria vary by location and season, and where they are coming from.With this information, scientists can then investigate the possible impacts on human health, he said.

“We need much better information on what sources of bacteria we are breathing in every time we go outside,” Fierer said.

The study was funded by the CIRES Innovative Research Program, the U.S.
Environmental Protection Agency, the National Science Foundation, the Howard Hughes Medical Institute and the National Institutes of Health. The aerosol sample collection for this project was supported by the Lake Michigan Air Directors Consortium.

Boulder police investigate third armed robbery

Aug 17th

Posted by Channel 1 Networks in News

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A woman returning home a little after 11 p.m. last night told police that she had been robbed at gunpoint as she was gathering items out of her car in a parking garage at 2301 Pearl Street.

This is the third armed robbery involving a similar suspect description in Boulder since Aug. 11, and police are reminding residents to be alert to their surroundings. Police are also asking people to call 9-1-1 if they see anything suspicious. Extra patrols will be on duty over the next several days, especially in the Boulder Creek Bike Path area.

Last night’s armed robbery occurred in the parking garage of the apartment complex at 2301 Pearl. When the 40-year-old victim arrived at the garage, she noticed a Hispanic male riding a bike through the parking garage. As she was collecting her purse and other items from her trunk, she saw him circle back around.

As she continued up the stairs, the suspect pointed a handgun at her. He asked her what she was carrying, and she asked him not to hurt her. She gave the suspect her purse and most of her packages. The victim told police the suspect lifted the hem of her dress to view her underwear, and that he grabbed her wrist and placed her hand on his groin. At that time, she says someone else in the garage made a noise which startled the suspect, and he fled on foot. She was not hurt.

The victim notified a friend, who called police.

The victim described the suspect as:
· Hispanic male with a round face
· In his 20s
· About 5’6” tall
· Short, “spiky” hair
· Wearing blue jeans
· Riding a red beach-cruiser style bicycle

Police are investigating a similar armed robbery that took place around 4 p.m. Monday in the 500 block of Canyon, along the Boulder Creek Bike Path. Three women were robbed of their purses at gunpoint by a Hispanic male, who fled eastbound on the path on a silver bike.

Detectives are also working in cooperation with the University of Colorado Police Department. On Aug. 11, a Hispanic suspect armed with a handgun robbed a female student on campus. The victim was not injured.

Anyone with information is asked to contact the Boulder Police Department’s Tip Line at 303-441-1974. Those who have information but wish to remain anonymous may contact the Northern Colorado Crime Stoppers at 1-800-222-TIPS (8477) or 1-800-444-3776. Tips can also be submitted through the Crime Stoppers website at www.crimeshurt.com. Those submitting tips through Crime Stoppers that lead to the arrest and filing of charges on a suspect(s) may be eligible for a cash reward of up to $1,000 from Crime Stoppers.

Boulder Armed robbery suspect still at large

Aug 16th

Posted by Channel 1 Networks in Crime

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Boulder police continue to search for an armed robbery suspect who threatened three women with a gun and then stole their purses.

Extra police patrols are monitoring the Boulder Creek area and will continue to do so.

On Monday afternoon, just before 4:00 p.m., a Hispanic male approached three women who were enjoying Boulder Creek near the area of 5th and Canyon. He displayed a gun and told the three to walk into the water so he could separate them from their purses, which they had placed on the bank. The women complied and the suspect fled on a bicycle with all three purses. No one was hurt.

The victims, plus several witnesses, heard a sound that they believed was a shot fired from a gun as the suspect rode away on his bike. Detectives recovered a projectile from a handgun in the area of the robbery. The suspect was last seen heading east on the Boulder Creek path, near the Criminal Justice Center.

Detectives are working on obtaining a sketch. The suspect is described as a:

Hispanic male
Early-to-mid twenties
5’8” – 5’10” tall
160 pounds with a stocky build
Wearing a grayish-blue polo shirt & jeans
Carrying a black backpack
Short dark hair

Boulder police are working with investigators from the University of Colorado Police Department, because Monday’s armed robbery is similar to a separate armed robbery that occurred on the campus on August 11.

Anyone with information is asked to contact Detective Brian Scott at 303-441-3381. Those who have information but wish to remain anonymous may contact the Northern Colorado Crime Stoppers at 1-800-222-TIPS (8477) or 1-800-444-3776. Tips can also be submitted through the Crime Stoppers website at www.crimeshurt.com. Those submitting tips through Crime Stoppers that lead to the arrest and filing of charges on a suspect(s) may be eligible for a cash reward of up to $1,000 from Crime Stoppers.

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