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  • The Edge of Crisis: Discovery of Young of Year Black Carp Mylopharyngodon piceus (Richardson, 1846) in the Lower Mississippi River

    Abstract: Understanding changes in the status of invasive species is important to managers in order to prevent or minimize impacts to native communities. Out of the four invasive carp imported to the U.S. from Eastern Asia, black carp Mylopharyngodon piceus have been generally overlooked due to the difficulty in capturing these fish even using targeted efforts. Because of this, limited resources have been channeled towards managing this species. Concerns over the expansion of black carp have been expressed, but direct evidence of reproduction in U.S. waters was lacking until young of year black carp were caught in tributaries of the Middle Mississippi River in 2015. This remained the known extent of the naturalized invasion until fish community surveys conducted in the fall of 2022 and 2023 documented young of year black carp in three oxbow lakes connected to the mainstem Lower Mississippi River. These collections provide evidence for increased population growth and exhibit expanding threats to the diverse mussel communities native to the Lower Mississippi River basin.
  • USACE Rock Island District awards first construction contract for Brandon Road Interbasin Project

    The U.S. Army Corps of Engineers, Rock Island District, awarded the first construction contract for the Brandon Road Interbasin Project on November 27. The $15.5 million contract was awarded to Miami Marine Services for site preparation and riverbed rock removal for the engineered channel. Miami Marine will partner with Michels Construction, Inc. of Milwaukee, Wisconsin, for completion of this contract.
  • Army Corps, Illinois, and Michigan sign agreement to move Brandon Road Interbasin Project forward and unlock Bipartisan Infrastructure Law funding for construction

    The U.S. Army Corps of Engineers, Rock Island District, and the states of Illinois and Michigan signed a project partnership agreement this week for the Brandon Road Interbasin Project, moving the project forward into construction phase. This milestone agreement allows $274 million in federal funding, including $226 million provided by President Biden’s Bipartisan Infrastructure Law, and $114 million in state funding to be used for construction of the first of three construction increments of the $1.15 billion project designed to prevent the upstream movement of aquatic nuisance species into the Great Lakes.
  • Behavioral barriers aim to stop invasive fish in Sandusky River

    The U.S. Army Corps of Engineers is looking at ways to stop grass carp from spawning in the Sandusky River near Fremont, Ohio, and nearly 3,700 miles of rivers and tributaries connected to Lake Erie where they damage habitats, increase erosion, and threaten the economy.
  • Army Corps partners with Pennsylvania to reduce spread of invasive species at Beltzville Lake

    Constructed by the U.S. Army Corps of Engineers and open to the public since 1972, Beltzville Lake has become a popular recreational spot for swimmers, boaters, and picnickers throughout Carbon County and surrounding areas. One of the Corps’ priorities at this project is safeguarding water quality, and recent samples have shown the presence of hydrilla throughout the lake. Not native to this region, hydrilla is an aquatic invasive species in the form of a plant mass that often attaches to boaters’ anchors. In collaboration with the Pennsylvania Department of Conservation and Natural Resources and other agencies, the Corps has been focused on containing the spread of hydrilla, thus introducing the Invasive Species Portable Washing Station.
  • Removing invasive caimans from Florida Everglades, UF/IFAS study reveals successful strategies

    The spectacled caiman, a species native to Central and South America, has been established in Florida since the 1970s. The pet trade and crocodilian farming industries, escapes and deliberate releases made it possible for caimans to invade the Florida Everglades. They pose a threat to native wildlife occupying the same habitat as our native alligators and crocodiles, competing for food and other resources. Meanwhile, they also prey upon birds, small mammals, fish and other reptiles. In a new University of Florida study, published in the journal Management of Biological Invasions, wildlife biologists at the Institute of Food and Agricultural Sciences (IFAS) reveal how a series of efforts and strategies led to successful control and removal of caimans in specific areas of the Everglades. “This study demonstrates the effects that the combination of early detection, rapid response, and persistent removal efforts can have on an invasive species,” said Sidney Godfrey, a wildlife biologist at the UF/IFAS Fort Lauderdale Research Education Center (UF/IFAS FLREC) and lead author of the study. Scientists consider their removal efforts and the results of the study a significant milestone for invasion science, as its applications can be leveraged and expanded to other invasive species found statewide and globally.
  • A Partnership in Invasive Species Action

    JACKSONVILLE, Fla.-The U.S. Army Corps of Engineers (USACE) Jacksonville District has a team
  • Occurrence of Silver, Bighead, and Black Carp in Waters Managed by the US Army Corps of Engineers

    Abstract: This technical report (TR) documents the distribution of Invasive Carp - Silver Carp (Hypophthalmichthys molitrix), Bighead Carp (Hypophthalmichthys nobilis), and Black Carp (Mylopharyngodon piceus) in US Army Corps of Engineers (USACE) managed waters. Invasive carp were introduced into the US nearly half a century ago. As they spread across the US, they compete with and consume native species and Silver Carp jumping behavior reduces recreational use. The USACE is responsible for management of waterbodies at more than 440 projects. Information on these projects including the presence of Invasive Carp is reported in the USACE Operations and Maintenance Business Information Link (OMBIL) database. To supplement the Invasive Carp information from OMBIL, 47 online ichthyology collection and observation databases were searched; 18 had information on Invasive Carp locations. Combining the collection, observation and OMBIL reporting information, 82 USACE projects in 19 districts in 6 of 8 divisions have Silver/Bighead Carp and 19 projects in 9 districts and 3 divisions have Black Carp. Understanding the distribution of Invasive Carp is important to enable managers to be pro-active: planning control efforts, posting informational signs, instituting live bait restrictions, and thus reducing the chances of species introduction or limiting species impact.
  • Feral Hog Elimination at Missouri Lakes

    When it comes to invasive species, it can be hard to find success stories. The Missouri Feral Hog Elimination Partnership is bucking that trend and seeing success in eliminating feral hogs from private and public lands – including U.S. Army Corps of Engineers' Harry S. Truman, Pomme De Terre and Stockton lakes in southern Missouri. 
  • 22-056 Corps to treat Lake Wallula to control invasive flowering rush

    KENNEWICK, Wash.– The U.S. Army Corps of Engineers’ Walla Walla District will be performing up to eight five-acre treatments in Lake Wallula, the McNary reservoir near Tri-Cities, Washington, with herbicide, Diquat Dibromide, at an application rate of two gallons per surface acre. This effort is to control the invasive aquatic plant species flowering rush.