Illinois Outdoors at PrairiestateOutdoors.com
RulesIllinois Outdoors at PrairiestateOutdoors.com

Prairie State Outdoors Categories

Top Story :: Opinion :: Illinois Outdoor News :: Fishing News :: Hunting News :: Birding News :: Nature Stories :: Miscellaneous News :: Fishing :: Big Fish Fridays :: Big Fish Stories :: State Fishing Reports :: Other Fishing Reports :: Fishing Tips, Tactics & Tales :: Where to Fish :: Fishing Calendar :: Hunting :: Hunting Reports :: Hunting Tips, Tactics & Tales :: Where to Hunt :: Tales from the Timber :: Turkey Tales :: Hunting Calendar :: Big Game Stories :: Nature and Birding :: Birding Bits :: Nature Newsbits :: Critter Corner :: Birding Calendar :: Stargazing :: In the Wild :: Miscellaneous Reports and Shorts :: Links :: Hunting Links :: Birding Links :: Video ::

Big Buck Stories

1960s :: 1980s :: 1991-92 :: 1992-93 :: 1993-94 :: 1994-95 :: 1995-96 :: 1997-98 :: 1998-99 :: 1999-2000 :: 2000-01 :: 2001-02 :: 2003-04 :: 2004-05 :: 2005-06 :: 2006-07 :: 2007-08 :: 2008-09 :: 2009-10 :: 2010-11 :: 2011-12 :: 2012-13 ::

Scattershooting

Flathead's Picture of the Week :: Big bucks :: Birdwatching :: Cougars :: Dogs :: Critters :: Fishing :: Asian carp :: Bass :: Catfish :: Crappie :: Ice :: Muskie :: Humor :: Hunting :: Deer :: Ducks :: Geese :: Turkey :: Upland game :: Misc. :: Mushrooms :: Open Blog Thursday :: Picture A Day 2010 :: Plants and trees :: Politics :: Prairie :: Scattershooting :: Tales from the Trail Cams :: Wild Things ::


Print

More invasions likely in Great Lakes

January 07, 2009 at 08:34 PM

AP Environmental Writer

The next invaders?

The National Center for Environmental Assessment conducted computer modeling studies of nine foreign species that could reach the Great Lakes or are already there and might spread to the point of causing ecological and environmental damage. Among them:
-Blueback herring
-Sand goby
-Roach, a fish common in northern Europe
-Rudd, a Eurasian fish brought to U.S. as bait
-Cercopagis pengoi, or fishhook waterflea
-Tench, or “doctor fish”
-Tubenose goby
-Corophium curvispinum, an amphipod or crustacean
-Monkey goby

 

TRAVERSE CITY, Mich. (AP)—Dozens of foreign species could spread across the Great Lakes in coming years and cause significant damage to the environment and economy, despite policies designed to keep them out, a federal report says.

The National Center for Environmental Assessment issued the warning in a study released this week. It identified 30 nonnative species that pose a medium or high risk of reaching the lakes and 28 others that already have a foothold and could disperse widely.

Among them are fish such as the tench (“doctor fish”), the monkey goby and the blueback herring.

“These findings support the need for detection and monitoring efforts at those ports believed to be at greatest risk,” the report said.

It described some of the region’s busiest ports as strong potential targets for invaders, including Toledo, Ohio; Gary, Ind.; Duluth, Minn.; Superior, Wis.; Chicago and Milwaukee.

Exotic species are one of the biggest ecological threats to the nation’s largest surface freshwater system. At least 185 are known to have a presence in the Great Lakes, although the report says just 13 have done extensive harm to the aquatic environment and the regional economy.

Perhaps the most notorious are the fish-killing sea lamprey and the zebra mussel, which has clogged intake pipes of power plants, industrial facilities and public water systems, forcing them to spend hundreds of millions on cleanup and repairs.

Roughly two-thirds of the new arrivals since 1960 are believed to have hitched a ride to the lakes inside ballast tanks of cargo ships from overseas ports.

For nearly two decades, U.S. and Canadian agencies have required oceangoing freighters to exchange their fresh ballast water with salty ocean water before entering the Great Lakes system. Both nations recently have ordered them to rinse empty tanks with seawater in hopes of killing organisms lurking in residual pools on the b ottom.

Despite such measures, “it is likely that nonindigenous species will continue to arrive in the Great Lakes,” said the report by the national center, which is part of the Environmental Protection Agency.

Some saltwater-tolerant species may survive ballast water exchange and tank flushing, it said. And aquatic invaders could find other pathways to the lakes - perhaps escaping from fish farms or being released from aquariums.

The report does not predict which species might get through. Instead, it urges government resource managers to monitor waters under their jurisdiction in hopes of spotting attacks in time to choke them off.

“Early detection is crucial,” said Vic Serveiss, a scientist with the National Center for Environmental Assessment and the report’s primary writer.

The researchers compiled their list of 58 potential invaders by reviewing scientific literature. They used satellite data and computer modeling to produce maps predicting how 14 of the species might spread across the Great Lakes, depending on availability of suitable habitat.

The models suggested that Lake Erie - shallowest of the lakes - and the shallower portions of the other lakes were most vulnerable to invasions.

Shallow areas tend to be warmer and have a greater variety of life than deeper water, said Mike Slimak, an associate director of the national center.

Hugh MacIsaac, a University of Windsor biologist and director of the Canadian Aquatic Invasive Species Network, said he expected very few invaders to reach the Great Lakes in ballast water now that both nations are requiring tank flushing at sea. Flushing and ballast water exchange should kill 99 percent of organisms, he said.

“I would be very surprised if their prediction comes true,” he said, referring to the EPA report’s suggestion that numerous invaders could reach the lakes despite the new ballast rules.

The report reinforces the need for further measures to keep foreign species out, including requiring onboard technology to sterilize ballast tanks, said Jennifer Nalbone, invasive species director for the advocacy group Great Lakes United.

“We are only beginning to invest the tremendous amount of resources needed,” Nalbone said. “We’re being hammered by invasive species and are still woefully behind.”

Your CommentsComments :: Terms :: .(JavaScript must be enabled to view this email address)

Oscars have invaded the canals in South Florida and they are a damn good fighting fish on light tackle. Taste good in the pan too. I would say one fish the Hermans should be wary of is the zebra tilapia. Very aggressive and loves to eat bluegill fry.

Posted by .(JavaScript must be enabled to view this email address) on 01/08 at 05:43 PM

Comment Area Pool Rules

  1. Read our Terms of Service.
  2. You must be a member. :: Register here :: Log In
  3. Keep it clean.
  4. Stay on topic.
  5. Be civil, honest and accurate.
  6. .(JavaScript must be enabled to view this email address)

Log In

Register as a new member

Next entry: Ice fishing dominates fishing report

Previous entry: Albino deer in Chicago Heights

Log Out

RSS & Atom Feeds

Prairie State Outdoors
PSO on Facebook
Promote Your Page Too

News Archives

December 2018
S M T W T F S
            1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31          
Copyright © 2007-2014 GateHouse Media, Inc.
Some Rights Reserved
Original content available for non-commercial use
under a Creative Commons license, except where noted.
Creative Commons