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Entries in invasive species (234)

Sunday
Apr032016

Contest Begins in Florida to Catch, Report, and Remove Nonnative Fish

Go fishing to win prizes, as well as document and remove nonnative freshwater fish, such as the Mayan cichlid shown above, from Florida’s waters.

You can do that in the second statewide Nonnative Fish Catch, Click and Report Contest, coordinated by the Florida Fish And Wildlife Conservation Commission (FWC) and partners. The 2016 contest kicked off  on April 1 and runs until midnight on April 30.  

Participating is easy: Provide a photo, enter detailed catch location or GPS coordinates, and report nonnative freshwater fish catches  here. They also can be reported by downloading the IveGot1 app, by calling 888-IVE-GOT1 (888-483-4681), or by posting photos and catch data to your Instagram account.   

 “Florida is home to at least 34 species of reproducing exotic fish and new species continue to be found, which can impact native fish communities,” said FWC biologist Kelly Gestring. “By removing and reporting nonnative fish, anglers help manage populations of exotic species and help conserve our state’s precious natural resources.”

The contest is part of a continuing effort to raise awareness of nonnative fish species and encourage anglers to target nonnative fish for consumption by the FWC and partners, including the U.S. Geological Survey, U.S. Fish and Wildlife Service, National Park Service, Florida Invasive Species Partnership, University of Georgia and Everglades Cooperative Invasive Species Management Area. Partners plan to hold the event annually with the help of anglers acting as citizen scientists.

For more information about the contest, go here.

 More information on nonnative freshwater fish and other exotic species is here.

Thursday
Jan142016

Giant Salvinia Found at Texas' Lake Fork

A noxious invasive plant that has plagued Louisiana and Texas waters for more than a decade finally has found its way to Lake Fork, the Lone Star State's No.1 trophy bass lake. Possibly giant salvinia was brought in accidentally by boat or trailer from Toledo Bend, Sam Rayburn, or Caddo.

"We do everything we can within the limits of manpower and budget that we have to work with," said Larry Hodge, spokesman for Texas Parks and Wildlife Department (TPWD). "The problem is that everybody who has a boat is a potential vector."

"We've found infestations like this on other reservoirs  in East Texas and have gone in and physically removed the plants, all that we can find," he added. "If you catch it early, sometimes you can get rid of it, at least temporarily."

On Nov. 18 in Chaney Branch, agency biologists confirmed the presence of this fast-growing, free-floating fern that can double its coverage in a week, as it blocks access and displaces native plants, which can't grow under its dense mats. 

"The infestation appears to be confined to this branch and a another small cove west of the dam and occupies an estimated 3.25 acres," TPWD said. "Judging by the distribution and age of the plants, it appears it has been in place for several months."

The Sabine River Authority (SRA) immediately close boat ramps at Chaney Point South and Secret Haven to reduce the risk of spreading the plant.   It also checked at bridge crossings and along shorelines for additional plants.

Additionally, SRA and TPWD crews have physically removed plants, as well as placed about 1,100 feet of floating boom across the creek, in hopes of containing the infestation within the 90-acre cove.

TPWD also plans to conduct a chemical treatment, using glyphosate. "All efforts will be made to protect beneficial plants, while focusing on killing the invasive giant salvinia," the agency said, adding that it will continue to look for the plant in other areas of the lake.

"We've had a lot of rain and high water this year and a lot of wind," said biologist Kevin Storey. " I suspect this will affect Lake Fork for years."

Wednesday
Jan132016

Court Ruling Against EPA Could Impact Anglers

A recent federal court decision possibly will be a good news/bad news proposition for bass anglers and other boat owners.

The U.S. Court of Appeals 2nd Circuit ruled that the U.S. Environmental Protection Agency (EPA) failed in its responsibility under the Clean Water Act to protect the nation's waters from aquatic invasive species introduced by ballast water discharge. The most glaring evidence of that has been the introduction of zebra and quagga mussels into the Great Lakes by ocean-going ships. They've since spread across much of the country, forcing states, cities, and businesses to spend billions of dollars annually for control costs and/or to mitigate damage.

Additionally,  troublesome round gobies and dozens of other species also have hitched a ride to this country in ballast water.

As a consequence of this action, EPA must develop stricter regulations regarding ballast water, although the court did not set a deadline. In responding to the decision, the agency said that won't happen until 2018, adding that it still is "studying the recent decision by the 2nd Circuit to determine the best course of action."

Environmental groups, which sued EPA over its ballast water policy, praised the decision.

“This is a huge win for our environment, economy, fish, wildlife, communities, and businesses,” said Marc Smith, policy director for the National Wildlife Federation.

“The court, in no uncertain terms, has told the federal government that it needs to uphold its responsibility under the Clean Water Act to protect our drinking water, jobs, and way of life. This decision is welcome news for the millions of families, anglers, hunters, paddlers, beach-goers, and business owners who have borne the brunt of damages from aquatic invasive species for far too long."

But Bill Frazier, conservation director for the North Carolina B.A.S.S. Nation, warned that with this good news possibly comes some bad.

"This is a very big deal," he said. "As with most things, EPA possibly will overreach and extend (its restrictions) to all waters. If so, this may be the death knell for recreational boaters moving from one water body to another."

Frazier added that specific consequences might include mandatory inspections and/or certificates for moving boats from one lake to another,  fees to pay for such programs, and possible closing of access areas if costs prove to be prohibitive. 

Wednesday
Dec302015

Our Right to Fish Is at Risk

At the bank the other day, the teller told me that I had shortchanged myself a thousand dollars on my deposit slip.

I know why it happened. Each of the checks that I was depositing included a fraction of a dollar. I was so concerned about getting the pennies correct that I neglected to devote sufficient attention to the dollars.

In other words, I focused too much on minor details and completely missed the big picture.

That’s an easy thing to do. Most of us have done it at one time or another, and, fortunately, consequences usually aren’t catastrophic. We have spouses, friends, and friendly tellers to set us straight.

But too many of us are missing the big picture right now regarding the future of recreational fishing, and consequences could be catastrophic.

As the administration leads the country in a direction that the majority of Americans oppose, those who dislike recreational fishing or, at best, are indifferent to it, are using their White House alliances to push for massive federal control of public waters. And here’s the dangerous part:

As conservationists, anglers believe in sustainable use of fisheries, while protecting habitat, opposing pollution, and preserving the resource for future generations to enjoy.         

By contrast those pushing an anti-fishing agenda are preservationists who believe in “look but don’t touch.” They assert that humans exist apart from nature, rather than as a part of it. They think that we act immorally when we manage or alter it in any way.

Consequently, the big picture is that a concerted effort is underway to deny us access to a public resource, and, in so doing, to deny and destroy a significant portion of our history, culture, and economy --- not to mention our right to enjoy a day on the water with friends and family. Granted, the movement is only now gaining momentum. Chances are, if you live inland, you might not see any closures in your life time. But the snowball has begun to roll downhill.

Arguably, it began when environmentalists convinced President George W. Bush to designate two remote areas in the Pacific as marine reserves. It has strengthened with President Obama's National Ocean Council, which has been given authority to zone uses of our oceans, coastal waters, and Great Lakes, as well as the option to move inland to rivers, lakes, and reservoirs.

Also, it’s taking shape via a “catch shares” management strategy in which recreational participation would be capped.

And as preservationists seek to “protect” oceans from anglers, lake associations want to do the same on inland waters. Knowing a good excuse when they see one, they insist that closures of public access areas are needed to prevent spread of invasive species.

Inland access might seem unrelated to the ocean management. But they are two fronts of the same battle.

You need only look to California to see what is coming our way. Fisheries are falling one after the other, like dominoes, as emotion trumps science-based fisheries management. Mostly the closures are coming under the auspices of the state Marine Life Protection Act (MLPA). But they’re also occurring through local regulations. In 2010, four out of five members of the Laguna Beach City Council supported a five-year moratorium on recreational fishing along its seven miles of coast.

“There’s no such thing as a five-year moratorium,” said dissenter Kelly Boyd. “You turn something over to the state and you’ll never get it back.”

Dave Connell, an angry angler, added, “We’re fighting a fad, an environmental extremist wacko fad about closing the ocean. I do not know what their agenda is, but it is not to save the fish. It is not to keep the ocean clean.”

Starting to see the big picture yet?

Sunday
Dec202015

Noise Could Be Way to Slow Spread of Silver Carp

Anglers and other boaters already know that silver carp don't like noise, and arguably that's not a good thing. That's because huge schools of these exotic fish go airborne as they flee the sounds of outboard engines, often damaging boaters and injuring people.

But this aversion to noise also could provide a silver lining in the quest to slow the spread of silver carp, according to scientists with the University of Minnesota-Duluth (UMD) and the U.S. Geological Survey (USGS).    

“Our complex noise findings suggest that certain sounds could be used to divert silver carp away from strategic points on waterways or herd them into nets,” said Brooke Vetter, a UMD researcher and graduate student.

After placing speakers at the ends of outdoor concrete ponds, scientists tested carp response to pure sounds, which resemble a dial tone, and more complex noises. The fish quickly adjusted to the pure tones, never swimming away more than two consecutive times. But they continuously fled the more complex sounds.

Now researchers are testing complex noise as a way to control silver carp in the Illinois River.

“Silver carp threaten many waterways in the Great Lakes basin by competing with native species,” said USGS's Mark Gaikowski. “Understanding silver carp behavior is critical for determining effective techniques to minimize the ecological and economic damage of this invasive species."