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March 8, 2021
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BALLAST WATER-INVASIVES
(2007-07-11)
(wgvu) - A NEW REPORT PROPOSES A SIMPLE WAY
TO PREVENT INVASIVE SPECIES FROM SNEAKING INTO THE GREAT LAKES
ABOARD OCEANGOING CARGO SHIPS ... JUST ADD SALT WATER.
IN A STUDY RELEASED TODAY, SCIENTISTS FROM THE UNIVERSITY OF
MICHIGAN AND OTHER INSTITUTIONS SAY VESSELS SHOULD BE REQUIRED TO
FLUSH THEIR BALLAST TANKS WITH FULL-STRENGTH SEAWATER BEFORE
ENTERING THE ST. LAWRENCE SEAWAY.
THEY SAY DOING SO WOULD KILL MANY ORGANISMS THAT WERE SCOOPED UP
IN FOREIGN PORTS WHERE SALINITY LEVELS ARE LOW.
AND EVEN THOSE THAT SURVIVE MIGHT BE SWEPT INTO THE OCEAN
INSTEAD OF WINDING UP IN THE GREAT LAKES.
COAST GUARD REGULATIONS INSTRUCT FREIGHTERS BOUND FOR U-S PORTS
TO EXCHANGE BALLAST WATER AT SEA. BUT SHIPS HAULING CARGO GET
AROUND THE REQUIREMENT BY DECLARING THEY DON'T HAVE BALLAST WATER
ON BOARD.

(COPYRIGHT 2007 BY THE ASSOCIATED PRESS. ALL RIGHTS RESERVED.)


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