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Mary Sue Bowers, natural resources specialist, Coralville Lake, talks to adjacent landowners about oriental bittersweet, an invasive species threatening Iowa’s woodlands.

7/30/2014 9:11:00 AM
Dense hydrilla beds formed along the banks of the Erie Canal, pictured in September 2013. Biologists are concerned about hydrilla spreading to multiple water bodies throughout New York and into the Great Lakes.

7/30/2014 8:53:00 AM
Invasive Air Potatoes
Air potatoes
7/30/2014 8:35:00 AM
The Invasion Curve illustrates that prevention is the most efficient and least costly method of combating invasive species. As a non-native species becomes more established over time, the effort and associated costs of addressing it escalate exponentially. (From the USDA Forest Service 2005 Invasive Plant Environmental Impact Statement)
Invasive Curve
7/30/2014 8:15:00 AM
USACE Park Ranger Joel Miller points out a landmark to his son Hudson while hiking along the North Slope Trail at Lake Sonoma June 26, 2014. The North Slope Trail at Lake Sonoma was designated a national recreation trail by the U.S. Department of the Interior.
Lake Sonoma, California
7/2/2014 2:07:00 PM
Crew members from St. Paul and Rock Islands districts install a temporary gate at Lock and Dam 5A, near Minnesota City, Minn., May 23, 2013. Since 2009, delays and interruptions have more than doubled on the nation's inland waterway locks and dams.
Temporary gate at Lock and Dam 5A,
7/1/2014 1:48:00 PM
The Burmese python, one of the five largest snakes in the world, is native to a large variation of tropic and sub-tropic areas of Southern- and Southeast Asia, but is considered an invasive species within Florida and other areas of the U.S.
USACE Invasive Species Leadership Team Poses with Burmese Python
6/20/2014 3:10:00 PM
Willamette Valley Project Park Ranger Christie Johnson provides an overview of Corps recreation facilities in the South Santiam Basin. Linn County Parks and Recreation manages six recreation areas on Corps land in the South Santiam Basin, including two campgrounds and several heavily-used boat ramps.
Corps presents Excellence in Partnerships Award to Linn County Parks
6/19/2014 1:10:00 PM
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