Mineral Wells Index, Mineral Wells, TX

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September 4, 2012

Microbe-free beaches, thanks to dogs

If you spent time at the beach this summer, you probably encountered seagulls screeching overhead and eating trash. You probably also encountered their poop. Seagull droppings can carry disease-causing microbes like Escherichia coli and Enterococcus, which can contaminate beaches and water. Now scientists have found a way to fight back: Release the hounds. In a new study, researchers show that unleashing dogs keeps the seagulls away -- and the water at the beach free of microbes.

Beach managers have been fighting seagulls for decades. The more birds, the more microbes, and the more likely the beach will meet the guidelines for closing, as advised by the Environmental Protection Agency (EPA). In a recent study, researchers from the U.S. Department of Agriculture tried reducing gull populations on Chicago beaches by "oiling" their nests -- spraying oil on the eggs to prevent the birds from hatching. That tactic had some short-term success, but its long-term benefits are unclear. Chicago beach managers have also used dogs to chase away gulls, which anecdotal evidence suggests has helped reduce the microbe counts and thus the number of beach closures.

To more definitively connect the gulls' dog-inspired dispersal to microbe concentrations, a team of researchers led by Reagan Reed Converse, an environmental microbiologist at EPA in Chapel Hill, North Carolina, examined water quality at North Beach in Racine, Wisconsin. During the summer, managers regularly "groom" the beach, located on the shores of western Lake Michigan about 100 kilometers north of Chicago, by turning over the sand, which buries any microbes left from bird poop. North Beach's managers have also worked to remove other sources of pollution, such as sewage runoff, leaving the gulls as the primary source of contaminants in the water.

The team collected beach water samples for the first 11 days of August 2011 to get a baseline bacterial count. Then, they sent in the dogs. One such hired dog posse, made up of one or two trained border collies and their human handler, chased ring-billed and herring gulls away from the sand from sunrise to sunset. (The handlers make sure that dogs leave endangered species, such as piping plovers, alone. They also collect the dogs' poop.) After a week of similar beach clearing, the researchers began sampling again -- while the dogs kept patrolling -- until August 27, for a total of 9 relatively gull-free days.

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    July 28, 2014

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    Daniel Snyder has come under fire for refusing to change the mascot of his NFL team, the Washington Redskins. The Redskins, however, are far from being the only controversial mascot in sports history.  Here is a sampling of athletic teams from all areas of the sports world that were outside the norm.

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    A reunion between a Pennsylvania woman who had been living overseas for two years and her pet schnauzer has gone viral, garnering nearly 20 million views on YouTube.

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    In moving south and taking 160 jobs with it, Beretta joins several other prominent gunmakers abandoning liberal states that passed tough gun laws after the Newtown shooting.

    July 28, 2014 1 Photo

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    July 25, 2014 1 Photo

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    The NCAA once cracked down on colleges that went too far luring top prospects, then it targeted teams that lathered players with special treatment. That was until the NCAA's get-tough approach backfired, rendering it ineffective and creating an opportunity for those who want to play dirty.

    July 25, 2014 1 Photo

  • cleaning supplies Don't judge mothers with messy homes

    I was building shelves in my garage when a neighbor girl, one of my 4-year-old daughter's friends, approached me and said, "I just saw in your house. It's pretty dirty. Norah's mommy needs to clean more."

    July 25, 2014 1 Photo

  • Russia's war on McDonald's takes aim at the Filet-o-Fish

    Russia said earlier this week that it had no intention of answering Western sanctions by making it harder for Western companies to conduct business in Russia.
    But all bets are off, apparently, when you threaten the Russian waistline.

    July 25, 2014

  • Police Brutality screen shot. Technology plays key part in battling police brutality (VIDEO)

    Allegations of police brutality are nothing new -- as long as there has been law enforcement, citizens have registered claims that some officers cross the line. But in the last few years, the claims of excessive force are being corroborated with new technology from cell phone cameras, police dash-cams and surveillance videos. 

    July 24, 2014 1 Photo

  • Arizona's prolonged lethal injection is fourth in U.S. this year

    Arizona's execution of double-murderer Joseph Wood marked the fourth time this year that a state failed to dispatch a convict efficiently, according to the Constitution Project, a bipartisan legal group.3

    July 24, 2014

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