In another attempt to locate the potential threat of Asian carp in the Great Lakes, officials began dumping approximately 2,000 gallons of the organic fish poison Rotenone yesterday into a two-mile stretch of the Calumet-Sag Channel, about seven miles west of Lake Michigan. The aim is to kill and count any invasive carp potentially lurking in the waterway as proof that these fish are spreading into Lake Michigan.
Here are some highlights from the latest ESA Policy News by ESA’s Science Policy Analyst, Piper Corp.
The red lionfish (Pterois volitans) has decorated fish tanks, and invaded Atlantic waters, for decades. While sightings along the East Coast started popping up as early as the mid-1980s, lionfish began to spread rapidly, occupying reefs in the Florida Keys and the Bahamas in the 1990s. Since then, invasive red lionfish have been reported as far north as Rhode Island and, as of this January, tracked to the southern Gulf of Mexico off the Yucatan Peninsula.
Here are some highlights from the latest Policy News. See the full edition here. AIR POLLUTION: CARPER PLANS FOR APRIL MARK-UP OF 3-POLLUTANT BILL–Senator Tom Carper (D-DE) said this week that he expects a mid-April markup of legislation to curb power plant pollution in the full Environment and Public Works (EPW) Committee. Carper, who chairs the Clean Air Subcommittee,…
Scientists from the University of Sydney are getting creative with their efforts to combat destructive cane toad populations in Australia and to protect native species from the pests. Cane toads were introduced to Australia in 1935. Cane toads, which were introduced to Australia in 1935 from Hawaii in an attempt to eradicate cane beetles, have caused a decline in other…
In a follow-up to last year’s approval of $475 million for the cleanup of the Great Lakes ecosystem by the Obama Administration, the Environmental Protection Agency (EPA) has announced an action plan to do just that. Lake Michigan from Milwaukee, WI Yesterday EPA Administrator Lisa Jackson met with governors of Great Lakes states to discuss the goals for cleaning up…
Scientists at USGS released a 300-page report today detailing the vulnerability of U.S. lands to invasion by large snakes from other continents. The report finds that Burmese pythons, northern and southern African pythons, boa constrictors and yellow anacondas are a high-risk animal for invasion. The report echoes the unfortunate situation on the America territory of Guam, where introduced brown tree…
Many trees with large seeds rely on vertebrate seed predators to disperse their seeds. The whitebark pine, a key subalpine species, has coevolved with the Clark’s nutcracker into a tight mutualism. In their paper in the April Ecological Applications, Shawn McKinney, a post-doc at the University of Montana, and his colleagues studied a natural disruption to this mutualism: an invasive…
The state governments of Maryland and Virginia, along with the Army Corps of Engineers, announced yesterday that Asian oysters will not be allowed in the Chesapeake bay. The decision capped a five-year study on the nonnative oyster to assess its potential to replace the rapidly diminishing native Eastern oyster, Crassostrea virginica. The decision ultimately came down to the Army Corps…
The concept of biological control is no new idea in ecology – people have been transporting living things to control other living things since the late 18th century. The most famous examples seem to be the big failures, where biocontrols become invasive themselves – such as mongooses introduced to Hawaii to control rats but that instead decimated populations of native…
Good science writers – as with all reporters – should verify the validity of their stories before publishing, making sure to cite the peer-reviewed research detailing a new discovery. But as in the case of the purported cane toad-eating frog, an exciting enough fact with weak empirical support can sometimes take off like….well, an invasive species. In 2005 and 2006,…
Invasive species often succeed in new environments because they can outcompete native species within an area for some resource, such as food, mates or habitat. What’s less clear is exactly what gives them this edge over local species that should be experts at living in their home territory. A study by Joshua King and Walter Tschinkel published online in the…