Great Lakes threats outpace solutions
Officials struggle to find ways to fend off invasive species
-- and the damage they cause.
By Hugh McDiarid Jr.
Detroit Free Press
To the west, the Asian carp lurks in a canal near Chicago,
22 miles from a tenuous electrical barrier designed to
keep the ravenous fish from swarming into the Great Lakes.
To the east, non-native quagga mussels -- the zebra mussel's
bigger, tougher cousin -- may be partly to blame for turning
part of Lake Erie into an oxygen-starved dead zone.
At a binational conference of Great Lakes experts in
Ann Arbor that concluded Saturday, the region's foremost
invasive species gurus admitted the threats are moving
faster than science can keep up with them.
"I ask the question: 'Do we know what's happening
in the Great Lakes?' and generally the answer is no,"
said John Mills, director of the Ontario region for Environment
Canada. The influx of foreign species -- often dumped
from the ballast water of oceangoing tankers -- is turning
the Great Lakes into an ecological carnival ride where
biologists can only guess what will happen next.
In Michigan, the only state or province entirely within
the Great Lakes watershed, the stakes are enormous. Changes
in the lakes can have an immediate impact on anglers,
swimmers, waterfront property owners and businesses. Ripple
effects spread through the state's tourist economy.
Managing the invasive species threat and a host of other
Great Lakes-related issues were part of the agenda at
the three-day meeting of the International Joint Commission.
The commission oversees management of boundary waters
between the United States and Canada.
The consensus: Better coordination is needed among the
dozens of groups and government agencies tasked with safeguarding
One idea: A Great Lakes czar to lead such efforts.
"On the invasive species, there is a real need for
someone to take control," said Thomas Skinner, administrator
for the federal Environmental Protection Agency's region
that includes the Great Lakes states.
The commission has already asked U.S. and Canadian federal
governments for authority to coordinate the war on invasives,
but has not yet been granted that power, said Dennis Schornack
of Williamston, chairman of the U.S. section of the commission.
"I don't disagree. I think someone should be put
in charge to encourage enforcement and look for common
standards," he said.
More than 160 non-native species have been discovered
in the lakes -- including microscopic invaders and the
ubiquitous zebra and quagga mussels.
The mussels, whose excrement increases phosphorus levels
that lead to damaging algae blooms, may be to blame for
a dead zone in Lake Erie where almost nothing lives.
The dead zone is a nightmarish setback to the lake, which
was the poster child for pollution during the 1960s when
pollution on a tributary caught fire and Time magazine
declared it a dead lake.
Exhaustive efforts slashed phosphorus levels through
the 1970s and 1980s. In 1995, the phosphorus levels began
increasing. The mussels and farmland runoff may be responsible,
said Jeff Reutter, a researcher at Ohio State University.
Because Lake Erie is the shallowest of the Great Lakes,
it often is the harbinger of bad news.
"It's the sentinel for all the Great Lakes. If there's
going to be a problem, it'll probably show up first"
in Lake Erie, Reutter said.