Showing posts with label Tennessee. Show all posts
Showing posts with label Tennessee. Show all posts

Monday, January 25, 2010

Week of Januray 25, 2010

Updated 1/28/10
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National park battling infestation of hogs


The Associated Press

KNOXVILLE, Tenn. -- National park biologists are trying to come to grips with a hog infestation in the Great Smoky Mountains National Park.

In 2009, the park's hog team removed 620 wild hogs, the third highest since the hog control program started in the late 1950s. Biologists say the hog population spiked last year because of a bountiful mast crop that enabled the sows to produce more than one litter.

Park biologist Bill Stiver told the Knoxville News-Sentinel the introduction of wild, semi-domesticated hogs into the park has made hog control even more difficult.

"The speculation is that hunters are illegally releasing feral pigs that eventually make their way inside the park," Stiver said. "It's a major problem not just here, but all over North America."

He said numerous hogs killed this year had spotted markings and curly tails associated with domestic pigs.

"We're getting a handful of animals that morphologically look different from our traditional wild boar," Stiver said. "Some of them act different, too. Instead of running away, they let you walk up to them."

Hogs in the park date to the early 1920s, when a herd of European hogs escaped from a game reserve on Hooper's Bald in the mountains of Graham County, N.C. The wild hogs moved into the park by the 1940s and began to wreak havoc on the ecosystem by eating rare plants and salamanders, defecating in streams and turning up the ground.

Biologists believe the wild hogs that invaded the park already had crossed with free-ranging domestic pigs. Their appearance, however, retained the lean hips, large tusks, straight tails and black hair of their European ancestors.

Read more at link.

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conference

Potential Invasive Pests Workshop

October 11-14, 2010
Mayfair Hotel • Miami (Coconut Grove), Florida USA

Read more at link.

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Camels enlisted to battle Tamarisk (Salt Cedar)

By Bryan Nelson
Mother Nature Network

camel

Tamarisk is one hard-to-kill invasive plant. Since it was first introduced from Eurasia to the United States in the 1800s, it has spread through the West like wildfire — actually, faster than wildfire. Efforts to eradicate it by burning it, cutting it, or dowsing it in herbicides have all failed. But tamarisk does have one formidable foe: hungry camels.

Known for their stubborn personalities, humpy postures and ability to survive for weeks without water, camels and dromedaries also have a keen appetite for salty fare — and tamarisk is as salty as they come. That's why ranchers in Colorado have enlisted the inglorious beasts to eat their way through this invasive species, eradicating it once and for all, according to High Country News.

"They will eat all day if given the opportunity," says Maggie Repp, a camel rancher in Loma, Colo. "My camels have killed every tamarisk on our place, so why not give it a whirl?"

A drooling dromedary may not strike you as a potential landscaper, but they do a good job. Repp says 10 camels can destroy half an acre of tamarisk in two days. That's not necessarily a solution for clearing the pesky shrub from the whole expanse of the Great Plains, but it's the perfect remedy for removing the odd tamarisk patch from your pasture.

Read more at link.

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NYSDEC head slated for Save the River event

By JAEGUN LEE
Watertown Daily Times

CLAYTON, NY — State Department of Environmental Conservation Commissioner Alexander B. "Pete" Grannis and other speakers will discuss the impact of aquatic invasive species in the Great Lakes and the latest status of the Asian carp invasion at Save the River's 21st annual Winter Weekend Conference.

This year's event will be Feb. 5 and 6 at the Clayton Opera House, 405 Riverside Drive.

Read more at link.

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USDA awards more than $4 million in weedy and invasive species research grants


Agriculture Deputy Secretary Kathleen Merrigan announced today that USDA's National Institute of Food and Agriculture (NIFA) is awarding $4.6 million to 13 universities for research to develop ecologically and economically rational strategies for management, control or elimination of weedy or invasive species.

"Invasive plants and animals are a major threat to food and fiber production, costing U.S. producers between $7 billion and $27 billion per year, but by doing research on controlling and managing weedy and invasive species we help protect the productivity of America's farmers and ranchers," said Merrigan.

Funded projects include work at Cornell University to minimize negative impacts of the European cranefly in perennial grass-based agroecosystems ($454,000).

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Japanese stiltgrass summit

The River to River Cooperative Weed Management Area is hosting a research and management summit on the invasive Japanese stiltgrass (Microstegium vimineum) on August 11-12, 2010 at Southern Illinois University in Carbondale, Illinois. Japanese stiltgrass, also called Nepalese browntop or eulalia, is an aggressive invader of forested habitats in the eastern United States. This summit will discuss recent research and management techniques and will feature presentations, panel discussions, field trips, and poster sessions.

Check www.rtrcwma.org/stiltgrass for conference updates!

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Expert to discuss local decline of bats at NSRWA lecture in Norwell, CT

By Gabrielle Boyle
GateHouse News Service

NORWELL, CT — A deadly fungus has depleted the bat population in Massachusetts and throughout the Northeast.

Dr. Tom French has been studying the reasons behind the sudden decline of bats in the United States over the past few years.

“It is what is called White Nose Syndrome, and it is quite catastrophic,” the doctor explained. “Unfortunately this is spreading rapidly… so we are scared to death how far it will go.”

French, of the Massachusetts Natural Heritage and Endangered Species Program, handles many of these kinds of matters everyday. This particular matter however is happening so quickly and abruptly, that he said attention should be brought on the situation as soon as possible. French is the upcoming speaker for the Water Watch Lecture Series put together by the North and South Rivers Watershed Association. [...]

French will be speaking on Wednesday, Jan. 27 at 7 p.m., at the South Shore Natural Science Center. He will be showing slides that he has prepared and answering any questions attendees may have. The lecture is free and open to the public. The science center is located at 48 Jacobs Lane, Norwell, MA. For more information, call (781) 659-8168 or check out the Web site www.nsrwa.org.

Read more at link.

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TNC Strike Team position

The Nature Conservancy, Illinois Chapter is hiring a “Restoration Specialist – Invasive Strike Team” position. This is an 8 month position and will be based in the southern Illinois region. Deadline to apply for the position is Thursday, February 4, 2010. For a job description and to apply go to www.nature.org/careers.

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Fish-killing virus has invaded Lake Superior


By: Sam Cook, Duluth News Tribune

Lake Superior’s newest troublesome invasion won’t come from a giant Asian carp after all, but from a tiny virus that already has caused big fish die-offs along the eastern Great Lakes.

Researchers at Cornell University announced Wednesday that they have found fish-killing VHS virus in fish samples from Lake Superior, including the Twin Ports harbor.

A small number of fish from Superior Bay and St. Louis Bay, as well as some from Paradise and Skanee Bays in Michigan, tested positive for the virus.

“It’s another sad day for the Great Lakes,’’ said Phyllis Green, superintendant of Isle Royale National Park in Lake Superior.

The research team spent several days in June collecting and sampling healthy fish in Lake Superior. Nearly 900 fish were collected from the lake. The finding means the disease has spread across all of the Great Lakes.

“It’s very unfortunate but not unforeseen. ... It’s obviously going to change how anglers and management agencies conduct business,’’ said Brian Borkholder, fisheries biologist with the Fond du Lac Band of Lake Superior Chippewa.

Minnesota and Wisconsin already have rules and guidelines in place to limit the spread of other invasive species, so anglers and boaters may be asked only to step up efforts as opposed to making major changes.

“Because of [other] invasive species, anglers have already had to deal with issues such as draining livewells, disposing of bait properly and spraying or drying their boats before going to other waters. This will just heighten things a little bit,” said Roy Johannes, DNR aquaculture and fish health consultant in St. Paul. [...]

Supporters of stronger regulations to thwart invasive species say VHS is only the latest of 180 species to invade the lakes. [...]

Read more at link.

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Monday, March 16, 2009

Week of March 16, 2009

Updated 3/20
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Vitex eradication effort gains traction

Group tallies past year's accomplishments

By Gareth McGrath, StarNewsOnline.com

Fort Fisher, North Carolina - The invasive plant has been discovered in Virginia and in places in North Carolina thought to be vitex-free.

But that's not necessarily a bad thing, since it shows that the educational and outreach efforts of the Carolinas Beach Vitex Task Force about the menace posed by the foreign invader are working.

It also shows, however, that there's a lot of work to do to eradicate the shrub. It is native to the Pacific Rim and was once viewed as the savior of the coast, but it's turned out to be a huge biological menace.

On Friday members of the task force gathered at the N.C. Aquarium at Fort Fisher to celebrate the past year's successes and discuss the remaining challenges facing the multi-state effort to eradicate beach vitex.

Among the 2008 accomplishments included getting North Carolina to declare beach vitex a noxious weed, making it illegal to be sold or possessed by nurseries or individuals, and securing a $128,000 grant for coastal eradication and educational efforts.

But Melanie Doyle, the state's beach vitex task force coordinator and horticulturist at the aquarium, said there's been an even bigger success over the past year.

"What I'm most proud about is nothing's been mandated by anyone," she said, ticking off the local and voluntary support up and down the coast that the task force has received in promoting eradication efforts. "This has all come about because of people who care."

But with greater awareness of the threat posed by vitex has come the reality of how big the problem is in North Carolina.

"We've got vitex in the northern part of the state," said Dale Suiter, a Raleigh-based biologist with the U.S. Fish and Wildlife Service. "Just a year ago, we didn't know that."

So far there are more than 400 known locations, including worrisome outbreaks along inland waterways that dramatically increases the amount of shoreline to survey. Link

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Fire service's newest toy burns invading grasses on Mullica River, NJ

By LEE PROCIDA, PressofAtlanticCity.com

WASHINGTON TOWNSHIP, NJ - The thumping sound of helicopter blades preceded the state Forest Fire Service’s Bell 206 JetRanger as it flew south over the Mullica River and turned to survey Hog Island, where it burned 132 acres of reeds Friday morning.

Hanging out the side was Rob Gill, an aerial ignition specialist, who would be operating the service’s new fire-starting device mounted to the helicopter, “The Red Dragon.”

Generically referred to as a plastic-sphere dispenser, the dragon is filled with paintball-like orbs containing potassium permanganate. When turned on, the machine injects the balls with antifreeze and drops them to the ground, where the mixture of chemicals bursts into flames about a minute later.

The group recently cooperated with the U.S. Department of Fish and Wildlife to spray herbicide over an infestation of phragmites, and is now paying the fire service a few thousand dollars to burn the invasive plants away to make room for native flora and fauna.

“Global warming aside, phragmites is the No. 1 threat to the health of our estuaries,” said Emile DeVito, manager of science for the NJ Conservation Foundation, who was familiar with Friday’s project. “It basically consumes all the habitat and virtually wipes out all the species.”

On the Atlantic County bank of the river, a crowd of trucks and people assembled to watch the blaze. A red fire service truck was parked near an Egg Harbor City police SUV in case the fire jumped the water, and a couple other pickup trucks were around from the locals fishing.

Continued at Link

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Weed removal money sought in Massachusetts

By JOHN APPLETON, The Republican

BRIMFIELD, MA - The Lake Sherman Association is asking the town for financial help while also seeking grants to cover the $10,300 cost of removing invasive weeds which have been dramatically spreading the past few years.

Association president Robert Chevalier said the $10,300 figure is based on a price quote from Lycott Environmental, Inc., of Southbridge, MA for a chemical treatment this spring to wipe out what has been identified as aquatic variegated milfoil.

The 55-member lake association is basing its case for financial assistance from the town in part on the fact that the town has a boat launch at the pond and that people go in swimming from the launch area.

"It's a landmark for the town and for anyone who is close to this town," said David W. McVeigh, a member of the association.

"We are trying to preserve it in any way we can," McVeigh said.

The association has applied to the Norcross Foundation for a grant for the weed eradication work and is considering other grant possibilities.

"We have been working on trying to get funding for three or four years," said Janet L. Hastings, the association vice president. Association members told the selectmen last week that the weeds already interfere with swimming and boating and, if left unchecked, they can spread to the point of choking the lake, which is only 12 feet deep at its deepest point. Link

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Waging war on invasive plants in Connecticut

By Keila Torres, ConnPost.com

Invasive plants are taking over the state's parklands and killing off native species, throwing fragile eco-systems into turmoil as wildlife is starved of its natural food source.

Invasive species -- including Oriental bittersweet and Japanese barberry -- have become a widespread problem around the state, said Todd Mervosh, a weed scientist for the Connecticut Agricultural Experiment Station in New Haven.

This year, the state Department of Environmental Protection is offering cities and towns grants to get rid of the annoying, non-native plants that have cropped up and taken root here.

The invasive species "are displacing the native vegetation, the plants that have always been here as part of our ecological system," Mervosh said. "There are a lot of animal species that co-exist with these native species, that depend on them."

Oriental bittersweet, an Asian vine with yellow fruit that entwines itself around other plants, is considered by many the "worst invasive plant in the state," he said.

Richard Tiani, executive director of Groundwork Bridgeport, said a group of Harding High School students working with his agency has also found a lot of Japanese barberry -- a vine that wraps around trees -- during their cleanup efforts in Bridgeport's parks and in surrounding towns.

"Over time it becomes so strong and heavy that it kills trees and pulls them down," Tiani said of the invasive plant.

The Harding "Green Team," working with Groundwork Bridgeport as paid summer interns, is partnering this year with the city of Bridgeport in a project to remove a multiflora rose and garlic mustard infestation in Veterans Memorial Park.

The city is seeking a $49,236 grant from the DEP to clean up a section of the 107-acre park. Another section of the park and wetlands, near the proposed Discovery Magnet School, will be cleaned up as part of the $31 million inter-district school project.

Getting rid of invasive plants is essential to preserving the city's parklands and wildlife, officials say.

Continued at Link

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Congress Approves Funds For Invasive Species Prevention

By KBJR News 1

Congress has granted nearly 1–million dollars to help slow the spread of invasive species into the Great Lakes Chain.

President Obama signed the bill into law this week, which will help researchers test various ways to treat ballast water before it's discharged into the lakes.

For more than 20 years invasive species have hitch hiked their way into the Great Lakes causing a wide range of economic and environmental problems.

From clogging water pipes to interfering with the lake's natural ecology, many environmental agencies have worked hard to slow the spread of these exotic pests.

The new funding will go towards the Great Ships Initiative which aims to do just that.

"The goal of the great ships initiative is to try to find ballast water treatment methods so that the water can be cleaned or sterilized before it is transported between one place to another."

Continued at Link

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Henry Hudson's majestic view altered by invasives

By Michael Risinit, LoHud.com

PHILIPSTOWN, NY - The slice of the Hudson River visible from a bluff on Little Stony Point in Philipstown probably appears much as it did to Henry Hudson and his crew aboard the Half Moon 400 years ago...

...The river was full of fish to levels that are just about unimaginable today," said Fran Dunwell, director of the state's Hudson River Estuary Program. "It was a very rich natural environment."

Dunwell recently wrote "The Hudson America's River." Waterfowl and other birds, she said, darkened the sky where they flew. Oak trees grew 70 feet tall without knots, perfect for shipbuilding. The banks, according to Juet, contained a "great store of goodly Oakes and Wal-nut trees and Chest-nut trees. Ewe trees and trees of sweet wood in great abundance, and great store of slate for houses, and other good stones."

Marshes lined most of the river, not just at Piermont, Iona Island and a few other places as they do today. Chairmaker's rush, horned pondweeds and umbrella sedge are gone, replaced by cattails and phragmites (aka common reed).

But seeds from the original plants are found in sediment cores pulled from the existing marshes, said Dorothy Peteet, a NASA senior researcher and an adjunct scientist with the Lamont-Doherty Earth Observatory of Columbia University in Palisades.

"We can see back in time," Peteet said. "I think it was vastly different. You had this diversity which would have gone up the food chain."

Read the full article at Link

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American chestnut ready to reign again

BY MORGAN SIMMONS SCRIPPS HOWARD NEWS SERVICE

After decades of selective breeding and countless hours of fieldwork, researchers believe they have developed an American chestnut tree that is ready to reclaim the Appalachian forests.

The first batch of these blight-resistant chestnut seedlings arrived recently at a greenhouse on the agricultural campus of the University of Tennessee, where workers trimmed the roots and identified each tree with a numbered tag.

The trees -- 1,200 in all -- were planted in three Southern national forests as a groundbreaking experiment to determine if decades of crossbreeding have produced a chestnut tree that is blight-resistant yet retains the superior timber qualities of the American chestnut tree.

"This is the very first planting of the final generation and the culmination of a lot of hard work," said Scott Schlarbaum, forest geneticist with the UT Department of Forestry, Wildlife, and Fisheries.

The trees were grown in a Georgia nursery in cooperation with the American Chestnut Foundation, an organization dedicated to restoring the American chestnut.

The American chestnut accounted for 25 percent of all the trees in the Appalachian mountains until a blight virtually eliminated them between 1904 and 1950.

Today, the airborne bark fungus still survives and kills virtually all American chestnuts by the time they've reached 20 feet in height.

For more than 30 years, the American Chestnut Foundation has been crossing Chinese chestnuts, which are naturally resistant to the blight, with American chestnuts to produce a super hybrid that can be reintroduced in the wild. Only American chestnuts that demonstrate natural blight resistance qualify for the breeding program, and scientists have been careful to breed trees from local environments.

Of the 1,200-year-old chestnut seedlings brought to the UT greenhouse, 500 were the blight-resistant hybrids. The remaining trees were either pure American chestnut, pure Chinese chestnut or hybrid trees from an intermediate back-cross generation.

Earlier this year, the 4-foot-tall seedlings were planted on national forest lands throughout the Southern Appalachian region. In the coming years, researchers will regularly monitor the trees for blight resistance, mortality and growth characteristics.

Stacy Clark, research forester for the Forest Service's Southern Research Station, said American chestnuts were renowned for their straight-grained wood and rapid growth rate.

"We want these trees to be blight-resistant, but also competitive," Clark said. "They're going out into the forest where they'll have to grow quickly to get above the deer browse, and compete with species like yellow poplar and red maple."

The goal of the American Chestnut Foundation was to breed a blight-resistant tree that is genetically 94 percent American chestnut. The foundation chose the Southern Appalachians as the proving ground for the final generation of seedlings because the region was once a stronghold for the American chestnut.

Clark, who leads the study for the U.S. Forest Service, said she is especially excited about two milestones in the trees' development: the fourth year of growth, which will reveal if the trees have held their own against competing species; and years 10 through 20, when American chestnuts normally succumb to the blight.

"If the trees are blight-resistant, we'll definitely know by that time," Clark said.

The chestnut blight robbed the Eastern forest of its undisputed champion. American chestnuts routinely grew 4 feet across and 120 feet high, and lived for centuries. The nuts were an important food source for a wide range of wildlife, and the rot-resistant wood was a prized building material.

Clark said that if the final generation of crossbred chestnuts survives in the national forests, this will raise great hopes about other species, like hemlocks and ash trees, that are being destroyed by nonnative pests.

"If we can restore this tree to its natural habitat, it will be the greatest success story in natural resource conservation," Clark said. Link

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Local anglers weigh in on aquatic weed control in Tennessee

Daimon Duggar, MarionCountyNews.net

Though many in Marion County are disappointed with last year’s decision by the Tennessee Valley Authority’s to discontinue aquatic weed control in the Nickajack reservoir, there is another segment of the community that couldn’t be happier: Fishermen.

According to a number of local fishermen and those in the fishing industry, TVA’s aquatic weed control program presents a danger to one of the area’s most popular sports and pastimes.

Last Saturday, March 7, dozens of fishermen and fishing enthusiasts gathered at Sullivan’s Landing on Highway 41 for the annual Grassmasters fishing tournament. The name of the competition says it all and reflects the opinion of many regarding the indispensable nature of aquatic growth as it relates to fishing.

“(Aquatic weed control) is really hard on the fish,” said fisherman Darren “Dobie” Kilgore. “It kills grass on humps. If they only did it in channels it wouldn’t be a big deal.”

A common complaint among fishermen is that the weed control program is non-selective. In addition to killing invasive exotic species, many feel, the long standing program also killed native aquatic grasses that allow the reservoirs variety of fish, including large mouth bass, to thrive.

“Grass helps the whole ecosystem. We used to have a good bank but not any more. It has been bad for 10 years,” said Marion County resident and fisherman Roger Kendrick...

...Avid fisherman and stakeholder Jim Henry worries that TVA’s discontinuance of their weed control problem will be more of a detriment to fishing than would unfettered growth however.

“It’s a mess and its going to be a lot worse,” said Henry. “There’s a lot of spots that you won’t be able to get to now. Mullin’s cove, for example. It was already hard to navigate it. This year I think its going to be impossible. This year will absolutely be worse.”

Only time will tell the wisdom of TVA’s new policy. But for fishermen and stakeholders alike, aquatic weed control in the Nickajack Reservoir will continue to be a growing problem.

Read the full article at Link

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South East Exotic Pest Plant Council 11th Annual Symposium

Creating Sustainable Landscapes for the Future

May 13-15, 2009
Quality Inn and Suites
Georgetown, SC

Agenda and Registration available online. Go to http://www.se-eppc.org/2009/ for all conference information.

Deadline to Register and Reserve hotel room: April 13, 2009.

Plenary speaker topics to include:

- Raising funds for your invasive species project
- Innovative approaches to effective invasive programs through partnerships
- Invasive plants from the perspective of the nursery/landscape industry

Other topics addressed through platform presentations and field trips include:
- Current research in invasive plant control and land restoration
- Building communication and consensus among key players
- Building cooperative weed and invasive species management areas
- Early Detection and Rapid Response efforts
- Control of tidal marsh invasives (ie. Chinese tallow, phragmites)
- And more!

Wonderful fieldtrips, workshops, and social events planned!

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'Red Baron' Nabbed In Baltimore

WBAL Radio as reported by Scott Wykoff

A Customs and Border Protection plant seed interception was confirmed on Monday (3/9/09) as the Baltimore area’s first reported discovery of cogon grass weed seed, aka Red Baron grass seed, and just as the legendary Red Baron was a menace to allied fighters during World War I, Red Baron grass has become a despised invasive weed throughout parts of the United States.

During a routine inspection on Friday at the Baltimore seaport, CBP agriculture specialists discovered weed seeds littered among non-compliant wood packing in a container of travertine tile that arrived from Turkey. On Monday, the U.S. Department of Agriculture pest identifier database determined the seeds to be Imperata cylindrica, or cogon grass, a Federal Noxious Weed, and confirmed that this is Baltimore’s first Red Baron seed report.

According to the USDA, cogon grass is an invasive weed from Asia that spreads quickly and disrupts ecosystems, reduces wildlife habitat and can decrease tree seedling growth and establishment. Cogon grass is considered one of the 10 worst invasive plant species in the world and is listed as a federal noxious weed. Cogon grass is believed to have invaded more than one million acres in Florida, Alabama, Mississippi, Louisiana, Georgia, and Texas.

“This interception is a significant find for our agriculture specialists, and it further illustrates our continued commitment to protect America’s agriculture industry and our economy from invasive insect pests and plants,” said James Swanson, CBP Port Director for the Port of Baltimore. “Invasive species pose dire consequences on our nation’s economy, potentially more so than even a single terrorist act could have.”

CBP issued an Emergency Action Notification to the importer to immediately re-export the container. Link

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Call for volunteers in Virginia for first Invasive Plant Removal Day on May 2

(Media-Newswire.com) - Volunteers are needed across the Commonwealth to help remove invasive plants that are wreaking havoc on Virginia’s landscape. The Virginia Master Naturalists and the Virginia Native Plant Society are seeking help Saturday, May 2nd at locations throughout Virginia in the first ever Invasive Plant Removal Day.

“From kudzu to English Ivy to tree of heaven, there are dozens of invasive species that are causing both ecological and economical harm,” said Michelle Prysby, Virginia Master Naturalist coordinator. “These invasive plants out-compete native species for the same resources, eventually harming trees, wildlife and water quality.”

The Virginia Native Plant Society and the Virginia Master Naturalists are sponsoring this event. Activities are being coordinated locally, and interested people can learn more about how and where they can help by going to www.virginiamasternaturalist.org/invasives/index.html .

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Feds release invaders to save native plants

BY JIM WAYMER • FLORIDA TODAY

They're using new invaders to devour old ones. And while these weevils gobble, they won't wolf down the plants that belong in Florida.

To give native plants a fighting chance, the U.S. Army Corps of Engineers this year announced a $16.6 million plan to send at least 14 invasive bug species on seek-and-destroy missions.

Biologists would set the insects free -- some just a few miles from Brevard County -- along 18,000 square miles from south of Orlando to the Florida Reef Tract in an effort to preserve the character of the Everglades.

They say the bugs will spread to the Space Coast and beyond. And they assure their introduction won't trigger further ecological harm.

"You don't let these things go and . . . forget about them," said Donald Strong, an ecologist and "biocontrol" expert at the University of California, Berkeley. "In the large majority of cases, the insects are chosen and put through rigorous tests based on the fact that they don't attack other things."

The invasive insects in coming years would control Florida's massive problem with melaleuca, Brazilian pepper, Old World climbing fern and Australian pine...

...The insects won't completely wipe out the targeted trees, just keep them in check. That could take two decades or longer.

The melaleuca weevil, for example, can eat away about 98 percent of the tree's seed production, said Ted Center, research leader in Davie.

"What we're basically doing is biologically sterilizing the tree. We're not eliminating the plant. We're neutering it," Center said...

...In addition to melaleuca, the Corps proposes to fight three other notorious invasive plants with insects.

Brazilian pepper: Unlike melaleuca, no one's quite sure how it got here. Most credit a doctor in Port Charlotte. Fond of how the tree looked, he raised hundreds of them in the 1920s, passing them to friends. The Corps hopes a sawfly, a thrips and a weevil can undo the doctor's good work.

Old World climbing fern: Two moths, a gall mite and a stem borer will tackle this much more recent invasion. A Delray Beach nursery introduced the fern -- a native of Africa, Asia and Australia -- in the late 1950s.

Australian pine: A seed wasp planned for release in the next few years holds the most promise to battle back the Australian pine, introduced to Florida in the late 1800s.

Although some past "biocontrols" grew into problems themselves, government biologists assure their extreme caution and long, careful study make these insects the best way to restore a more natural state.

Read the full article at Link

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U.S. Birds Struggling to Survive

WASHINGTON, DC, March 19, 2009 (ENS) - Nearly one-third of the more than 800 bird species in the United States are endangered, threatened or in decline due to climate change, habitat loss, and invasive species, finds the first comprehensive report ever produced on U.S. bird populations.

At a news conference in Washington today, Secretary of the Interior Ken Salazar released the report, which was developed by a partnership among the U.S. Fish and Wildlife Service, the U.S. Geological Survey, state government wildlife agencies and nongovernmental organizations...

"Just as they were when Rachel Carson published "Silent Spring" nearly 50 years ago, birds today are a bellwether of the health of land, water and ecosystems," Salazar said. "From shorebirds in New England to warblers in Michigan to songbirds in Hawaii, we are seeing disturbing downward population trends that should set off environmental alarm bells. We must work together now to ensure we never hear the deafening silence in our forests, fields and backyards that Rachel Carson warned us about."

...Invasive plants and animals are major threats. Domestic and feral cats kill hundreds of millions of birds each year. Island nesting birds, particularly seabirds, are vulnerable since they nest on the ground or in burrows and are preyed upon by rats, foxes, cats, dogs, and mongooses.

Read the full article at Link

Monday, February 9, 2009

Week of February 9, 2009

Updated 2/12

Exotic fish pose threat to native species in Everglades

By Curtis Morgan, Miami Herald

The small pond six miles deep in Everglades National Park suddenly began bubbling like a pot aboil -- a telltale sign of air-slurping walking catfish.

Dave Hallac, the park's chief biologist, dipped a net into the muddy commotion and hauled up a mess of wriggling slime so hefty it surprised even him. He counted out 56 fish from a single scoop.

Walking catfish, along with other species originally imported for somebody's tank or table, outnumbered natives in this shallow, shady bayhead by an unhealthy margin. Unlike giant python, the Glades' most notorious invader, these dinky denizens don't draw attention to their presence by, say, swallowing an alligator and exploding. But for park scientists, their spread is no small concern.

''This is a problem that is 10 times worse than the python, but it's all under water, so nobody knows about it,'' Hallac said. Link

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Insect killing Pennsylvania's hemlocks

By Dan DiPaola, Daily American

RICHLAND (PA) TOWNSHIP - The hemlock population around the Quemahoning Reservoir is under attack by an invasive insect that could wipe out the tree within four years, according to Cambria Somerset Authority officials.

A harvester working in a large stand of hemlock along Que Dam Road found the hemlock woolly adelgid, an aphid-like insect from Asia, in downed trees in November, said manager Thomas Kakabar.

“We've been keeping an eye out for it and now we have it,” he said. “It's going to claim most of the hemlock in Pennsylvania.”

The small soft-bodied insect feeds on young branches, which results in premature needle drop and branch dieback, according to the state Department of Conservation and Natural Resources.

The insect was first reported in the state in the late 1960s and has been reported in 44 counties as of 2005, according to the site. “East to west, it's been moving this way for a while,” said authority Chairman James Greco. Link

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Invest in restoration, not Asian oysters

The Virginian-Pilot

EVERYONE AGREES on the need to restore the Chesapeake Bay's oyster population, both for the ecological effects and commercial possibilities. The disagreement - raging for years now - is over what restoration should look like and what its goal should be.

Maryland, Virginia and federal officials are now considering whether to introduce a foreign oyster species into the Bay in hopes of saving an industry that has been dying since the parasitic diseases Dermo and MSX arrived in the watershed.

Many of the remaining seafood processors want an oyster that will allow them to stay in business and provide jobs. The Asian oyster has shown significant potential. Watermen are more divided; some are already growing native oysters they fear would be crowded out by a foreign species.

Aside from the commercial considerations, there are ecological ones. The decline of the Bay's oyster population has coincided with the decline in its water quality. Restoring any oyster - along with the menhaden and other struggling species - could do much to make the Bay healthier.

The Bay's primary environmental watchdogs, after years of relative neutrality on the subject, are now lobbying to keep out the Asian oyster, preferring instead a greater effort to restore the native species. There have been encouraging signs, particularly in the Lynnhaven watershed, that the native species have potential to rebound if enough effort is put into restoration. Link

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Economics of Invasive Species

Oregon Invasive Species Council. Prepared for the Oregon Invasive Species Council by Oregon State University. Link

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Beach Vitex Task Force symposium

The Carolinas Beach Vitex Task Force will hold its annual symposium on Friday, March 13 at 10:00 a.m. at the North Carolina Aquarium at Fort Fisher, 900 Loggerhead Rd., Kure Beach, NC (near Wilmington). The symposium is open to the public. Link

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Tennessee Governor Proclaims Invasive Weed Awareness Week

Governor Phil Bredesen has issued a state proclamation declaring Feb 22-28, 2009, as Invasive Weed Awareness Week (IWAW) in Tennessee in conjunction with the 10th Annual National Weeds Awareness Week in Washington, D.C. The Tennessee Exotic Pest Plant Council (TN-EPPC), an all-volunteer, nonprofit organization, is working closely with various local, state and federal organizations and agencies to promote public education on the harmful impacts of nonnative, invasive plant species through several "pest plant removal events" around the state. Link

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Waccabuc Cove, NY, Brazilian water-weed removal plan presented

By Matt Dalen, LewisboroLedger.com

Four months after discovering a highly invasive aquatic plant in Lake Waccabuc, the Three Lakes Council is planning drastic measures to remove it. A plan presented at the Tuesday, Jan. 27, meeting of the Planning Board would essentially remove the top layer of the lake bottom over an area of nearly two acres, in hopes of capturing every fragment of Egeria densa, also known as Brazilian waterweed or Brazilian elodea. The plan would cover the entirety of Waccabuc Cove, a small cove on the north shore of the lake. So far, the plant has only been found in that cove.

“I want to start this as soon as possible,” said Janet Andersen, who represented the council before the board. “If this thing is out somewhere else, the game’s over.”

The proposal is likely to go to a public hearing in March before the Planning Board rules on the permit.

Because only male specimens of Brazilian elodea have been brought to the United States, the weed cannot reproduce with seeds. However, a fragment of the weed can grow into a full plant, and it grows at an extremely fast pace, which makes it one of the worst aquatic invasive species.

“This is something which, certainly, it appears we have one attempt to hopefully eradicate,” said town wetlands consultant Bruce Barber. “I’m not sure you have a real good second attempt at it if it starts to spread out in the lake area. We want to make sure we get this right the first time.”

The proposal would close off the cove and use “suction harvesting” to suck the lake bottom into containers, which would then be disposed of. It’s the hope of the council that this type of suction would be able to capture every fragment of the plant in the cove. This may be possible because the weed appears to be contained to just the cove, and wind and water currents both run into the cove, potentially isolating it.

Ms. Andersen said that an alternative — aquatic herbicide — had been considered, but that had run into several problems, the largest of which was residents of the lake community who use the lake for drinking water. At least 14 homes get their water supplies from the lake, according to Ms. Andersen, several of whom live on that cove. Aquatic herbicide would cut off the use of the water to those homes for at least two months, not only for drinking but also for showering and other uses.

The suction harvesting plan, which requires state approval in addition to town approval because the state owns the lake bottom, would cost at a minimum about $15,000 per acre just for the suction itself, Ms. Andersen said. Additional costs, which have not been measured, would be incurred for obtaining a 400-foot net to block off the cove during the work and capture any fragments of the weed that drifted away, educating the public on what the work entails, and disposing of the material harvested from the bottom of the lake. The money would likely be obtained by the council through a fund-raiser, Ms. Andersen said.

Assuming all of the permits are received and the council can find an experienced manager to oversee the harvesting, the hope is to complete the work before the Fourth of July and before extensive boat traffic begins on the lake.

Board members asked about the potential impact on the cove’s ecosystem. Ms. Andersen said that previous experience had shown that, after this kind of project, water plants repopulated the area quickly. She also said that, while a small number of fish might be caught in the suction harvest, they would likely flee from the commotion, and that there were no endangered or threatened fish in the lake. Link

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New aquatic invaders info available at the Central NY Boat Show

By David Figura, The Post-Standard

Boaters interested in how they can prevent the spread of fish diseases and aquatic invaders such as zebra mussels and water chestnuts that disrupt the food chain, clog waterways and cost millions of dollars annually in control measures across the country can check out a new exhibit this week at the CNY Boat Show at the NYS Fairgrounds.

The show begins at 1 p.m. Wednesday and continues through Sunday.

The Finger Lakes Partnership for Regional Invasive Species Management will be providing fact sheets and other resources for dealing with invasive species on the Great Lakes, inland waters (streams, ponds and lakes) at a booth in the Toyota Building.

The boat show this year will feature more than 500 power and sail boats, yachts, water recreation equipment and marine accessories on display. The show runs from 1 to 9 p.m. Wednesday, Thursday and Friday; 10 a.m. to 9 p.m. Saturday and 10 a.m. to 5 p.m. Sunday. Cost is $9 per person; children under 12 free. Free parking. Link

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To battle phragmites, Assateague calls in the torches

By Charlene Polk, DelmarvaNow.com

ASSATEAGUE ISLAND, DELAWARE -- The National Park Service intends to use controlled burns on Assateague Island to help control the spread of the invasive plant phragmites next month.

The park service plans to burn about 200 acres during one week sometime between March 10 and April 1 to remove the above-ground remains of Phragmites australis (common reed) that have been sprayed with herbicide. It will be the first time the park's staff has chosen to fight the rapacious cattail-like plant with fire.

"The goal is to reduce the biomass, the phragmites deadened down by aerial spraying," said Ted Morlock, chief ranger at Assateague Island National Seashore. "This will help re-vegetate areas." Link

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Invasive insects in our woods

7 p.m. Tuesday, Feb. 24, at the Thayer Memorial Library, Lancaster, MA. The news is full of stories about insects with exotic-sounding names we never heard about years ago — Emerald ash borer, Hemlock woolly adelgid, and right here in Worcester, the Asian long-horned beetle. Who invited these pests in and how are they able to cause so much damage once they arrive? Program presenter Laura Marx is the forest ecologist for the Nature Conservancy’s Massachusetts Chapter and an adjunct professor of environmental biology at Westfield State College. Laura will tell stories of invasive insects and describe how all of us can have a part in controlling these insects. Everyone will leave with the information needed to be a set of “eyes on the ground” and a better understanding of how important it is to work to prevent these outbreaks in the first place. Age 10 through adult. Link

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Tuesday, September 23, 2008

Week of September 21, 2008


Updated 9/26

Natural Areas Conference 2008

Focusing on ecological management themes, with an emphasis on invasive exotic species issues. October 14 - 17. Nashville, Tennessee.

Early Registration Fees now available thru
September 30th*!

LINK

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New York foresters to aid Massachusetts in fight against beetles

By Shaun Sutner, TELEGRAM & GAZETTE STAFF,
http://www.telegram.com/

WORCESTER— The destructive insect that is tearing through the northern section of the city’s stock of hardwood trees was first discovered in this country in New York more than a decade ago. Now experts on the Asian longhorned beetle from that neighboring state are coming here to help in the fight to eradicate the bugs. Early next month, a team of trained foresters from the New York Department of Environmental Conservation is scheduled to arrive in Worcester to join federal and Massachusetts officials, who are surveying infested trees and plan to begin cutting them down in November.

Their expenses are being underwritten by the U.S. Forest Service, in a welcome development to city officials preoccupied with trying to get the federal government to absorb local costs for the eradication program that could amount to more than $10 million.

New York’s infestation was initially discovered in 1996 in the borough of Brooklyn, and then in the boroughs of the Bronx and Queens and on nearby Long Island. A new infestation was found last year on Prall’s Island, an uninhabited island off Staten Island.

The Massachusetts outbreak, in which more than 1,000 infected trees have been identified in the Worcester area, may turn out to be the biggest yet, according to the Forest Service. Article

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Invasive animal amnesty in Florida

Residents who own reptiles that are not native to Florida can now give up their pets without facing a penalty, instead of releasing them into the wild. Releasing animals such as iguanas and pythons, is a "significant pathway for the introduction of nonnative species" says the Florida Fish and Wildlife Conservation Commission.

Not be mention, very illegal.

The commission adopted the new rules on Wednesday that set up a series of pet amnesty events so pet owners can surrender their unwanted pets to wildlife agencies or individuals instead of illegally releasing them.

The next amnesty day event will be held at the Jacksonville Zoo on November 22. Another one will take place in Miami in early 2009. Article

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The Nature Conservancy, Suffolk County Parks partner to remove invasive plants from natural areas

East Hampton, NY — September 23, 2008 — As part of a comprehensive effort to reduce the number of invasive plant species found in Long Island’s natural areas, The Nature Conservancy, Suffolk County and the Student Conservation Association are working together to eradicate eight invasive plants documented at Cedar Point County Park in East Hampton. The plants include: tree of heaven, garlic mustard, Japanese knotweed, Japanese barberry, oriental bittersweet, autumn olive, Japanese honeysuckle, and black locust.

The estimated yearly damage from invasive species worldwide totals more than $1.4 trillion--five percent of the global economy.

Invasive plants are the second biggest threat to the natural environment of Long Island, aside from outright habitat loss” said Kathy Schwager, invasive species specialist for The Nature Conservancy on Long Island. “Invasive plants and animals hurt economies, thwart recreational activities like boating and kayaking and even threaten human well-being.”

Cedar Point County Park is one of the jewels of the Suffolk County Department of Parks, Recreation & Conservation. The 607 acre parcel is located in the Town of East Hampton within the Peconic Watershed overlooking Gardiners Bay. The site is comprised of an oak-hickory coastal forest, fresh-water wetlands, salt marsh and more than four miles of shoreline.

“My family and other County residents have visited this beautiful park for years. Ecosystems are a delicate balance, a choreography of plants and animals that all depend upon each other for survival. When an invasive species comes in, it throws that balance off,” said County Legislator Jay Schneiderman. “I am committed to working with the Legislature and the Invasive Species Advisory Board to make sure invasive species stay out of our parks."

“It’s wonderful that we have all come together in partnership to eliminate invasive species,” said Marci Bortman, director of conservation programs for The Nature Conservancy on Long Island. “We could not have accomplished this hard work without the dedication of Suffolk County, funding from New York State and the hard work of the Student Conservation Association.”

Awareness of invasive plant species is part of a growing trend. In 2007 both Suffolk and Nassau Counties passed legislation stopping the commercial sale, introduction, and propagation of 63 plant species that are deemed non-native and invasive on Long Island. Article

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New York DEC invasive species grants

Deadline for Applications is October 31, 2008.

ALBANY, NY (09/25/2008; 1434)(readMedia)-- New York State Department of Environmental Conservation (DEC) Commissioner Pete Grannis today announced that grant applications are now being accepted for projects proposing to eradicate terrestrial invasive species. Terrestrial invasive species is defined as a plant or animal that lives or grows predominately on land. Applications will be accepted until October 31, 2008.

DEC is making up to $1 million in state grants available to municipalities and not-for-profit organizations for projects to eradicate and/or permanently remove infestations of terrestrial invasive species throughout the state. The funding for these grants was secured in the 2008-09 enacted state budget, through the Environmental Protection Fund. State funds can be used to pay for up to one-half of the cost of selected projects. Individual grants for terrestrial eradication proposals will be awarded for projects that range from $2,500, up to $100,000.

The 2008-09 enacted state budget includes $5 million in the Environmental Protection Fund to implement New York State's Invasive Species Task Force recommendations. For more information on the task force, visit http://www.dec.ny.gov/animals/6989.html .

Application materials for Invasive Species Eradication Grants have been mailed to municipalities throughout the state. Copies are also available on the DEC website or by calling DEC's Division of Lands and Forests at (518) 402-9425. All project applications must be postmarked by October 31, 2008.

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