Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
by Staff Writers
Ottawa (AFP) June 03, 2014
Canadian conservation authorities on Tuesday celebrated a succesful test using liquid fertilizer to kill invasive Zebra mussels in a lakefront harbor in the western province of Manitoba.
"The treatment process came to a successful end at Winnipeg Beach Harbour on Monday with all... mussels pulled from the harbor confirmed dead after day nine of the estimated 10 day treatment process," Manitoba conservation authorities said a statement.
The fight against the mussels will now move to three other nearby harbors, they added.
The small freshwater mussels are native to Eastern Europe and Western Asia. They were discovered in the four Lake Winnipeg harbors last year.
"We need to take immediate action to combat the threat of a zebra mussel infestation in Lake Winnipeg... before they spread further and cause permanent damage to the ecosystem or to Manitoba waterways," Conservation Minister Gord Mackintosh said at the time.
Conservation officers killed them off by applying liquid potash to waters for 10 days and closing off the harbor with a gated silt curtain to keep the potash in.
Liquid potash is a plant nutrient mined in vast quantities in neighboring Saskatchewan province and sold to farmers worldwide.
Dumping it in a lake does not impact fish, nor water quality, its concentration eventually dissipating.
Zebra mussels (Dreissena polymorpha) reproduce at an alarming rate, damaging harbors and waterways, ships, water treatment plants and power plants, as well as disrupting the aquatic food chain.
They were first detected in North America in 1988 in the Great Lakes, after catching a ride in the ballasts of transport ships, before spreading across the continent.
Millions of dollars are spent annually to fight the scourge, with mixed results.
Water News - Science, Technology and Politics
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.|