Study: Nonnative Species Carried in Lakers' Ballast Water
A recent study on nonindigenous species of plankton in ballast discharges from U.S. and Canadian lakers to western Lake Superior documented five species of nonindigenous zooplankton not yet established in western Lake Superior, including Hemimysis anomala (“bloody red shrimp”), in ballast water discharged there. It also detected, in uptake water, a species of zooplankton (Paraleptastacus wilsoni) that had not previously been recorded in the Great Lakes.Some of the species, including this one, live in harbor sediment and may have escaped routine surveillance to date. Determination of
Soo Locks Open for 2016
At 12:01 a.m. today, the U.S. Army Corps of Engineers officially opened the Soo Locks for the start of the 2016 shipping season. The locks at Sault Ste. Marie, Michigan are among 16 locks that form the Great Lakes St. Lawrence Seaway navigation system which extends from Duluth, Minnesota to the Atlantic Ocean. Together these 16 locks lift or lower ships 600 feet – the height of a 60 story building. Since the Soo Locks closed in January, the Corps has been busy executing winter maintenance, repair and rehabilitation projects. Projects included the installation of a hydraulic system
February 2025
