Showing posts with label swans. Show all posts
Showing posts with label swans. Show all posts

Monday, April 9, 2012

No. 1 Deer Predator in Michigan is a Surprise

by North American Whitetail Online Staff

If you had to guess which predator would be the top whitetail consumer in Michigan, you’d probably guess wolves — and to be fair, that’s not a bad guess. However, biologists say that’s not the case.

A study by Wildlife Ecology and Management at Mississippi State University, in association with the Michigan Department of Natural Resources, found that coyotes are the top whitetail fawn predators in the western Upper Peninsula, followed by bobcats in second. Wolves came in fourth behind a three-way tie of hunters, unknown predators and undetermined causes. ...

Read the full story at link.

----------------------------------------------------------

Swans Gone: Pair of swans killed to protect Fairhaven, MA marsh life

By BETH PERDUE
SouthCoastToday.com

FAIRHAVEN — The killing of two swans to protect restored marshland at Atlas Tack has angered and saddened some local residents many Two swans known to inhabit a pond at the Atlas Tack site were killed late last year by a federal agency because they were eating and destroying vegetation that was part of clean-up efforts.

The swans were killed only after state and federal agencies unsuccessfully sought out other methods to deter them, according to a spokesman from the Massachusetts Department of Environmental Protection who confirmed the deaths.

Atlas Tack underwent a $21 million clean-up process that included restoration of wetlands area at the site, said Joseph Ferson, MassDEP spokesman, in a statement.

“During this early stage of development, wetlands resources like this are fragile and require more protective measures to ensure their long-term viability,” he said in an e-mail. “At this early precarious stage, the wetlands restoration was subjected to predation by mute swan, an invasive species to the area.”of whom often watched the beautiful birds while using the Fairhaven bike path. ...

Read the full story at link.

---------------------------------------------------------

Mighty hemlocks falling to tiny, hungry insects

Tennessee's giant trees being attacked faster than expected

By Anne Paine
The Tennessean

Only a small portion of the state’s hemlocks — many that are hundreds of years old and stand 10 stories or higher — are expected to survive a scourge of tiny insects that has advanced here from the Northeast.

Chemical treatments are needed one tree at a time, and there’s only so much money and time available.

Many of the long-lived evergreens already have died or are dying in Great Smoky Mountains National Park and elsewhere, leaving needleless gray hulks that no longer shade creeks and threaten to fall on whatever is nearby.

And the woolly adelgids — named for the clumps of whitish wax fibers they produce — are progressing more quickly than officials calculated across the Cumberland Mountains and Plateau toward some of the state’s best-known scenery and hiking spots. The fast-reproducing Asian species has no native predator here. ...

Read the full story at link.

---------------------------------------------------------

Wednesday, January 2, 2008

Week of December 30, 2007

Happy New Year!

Invasive plants and animals taking hold in Rhode Island waters

PROVIDENCE, R.I. (AP) —Invasive plants and animals that can damage the environment and cost millions of dollars to control have increasingly taken hold in Rhode Island waters. A survey by the state Department of Environmental Management found that 79 percent of the state's freshwater bodies have been tainted by at least one invasive species. "This was just a survey to find out the distribution of invasive species, and they're everywhere," said Katie DeGoosh, a freshwater biologist at the DEM. There are other signs of problems, too. Last year, the Rhode Island Country Club in Barrington spent $6 million on dredging and reconstruction as it removed reed phragmites, an invasive species. State officials say they expect new invasive species from other states to continue to stream into Rhode Island's lakes, rivers and other bodies. Full Article

-------------------------------------------------------------

2008-2012 National Invasive Species Management Plan -- Draft for Public Comment (PDF 143 KB) (Dec 20, 2007) All comments must be received by close of business on Feb 11, 2008 -- see Federal Register Notice for more information.

-------------------------------------------------------------

The Noble, Gentle Swan Is Anything But, to Some

By THOMAS KAPLAN, New York Times

NEW HAVEN, Connecticut — Known for gliding along local waterways with statuesque grace, the mute swan is rarely thought of as an environmental hazard. But wildlife experts say that the swan’s elegant facade conceals an ecological menace that devours shoreline vegetation, scares away other waterfowl and can even attack humans. The bird is now a target of a campaign to reduce its numbers in Connecticut's delicate coastline habitats. The leaders of the effort are conservationists, including the Connecticut Audubon Society, which in the coming months will intensify a campaign to urge state officials to control the swans’ population, which stands at about 1,100. Full Article

------------------------------------------------------------

Kudzu may be a major air polluter

By Brian McNeill, DailyProgress.com

The vine that ate the South has a nasty case of gas. Kudzu - the ubiquitous vine that covers shrubbery, trees, telephone poles and anything else in its path - may be pumping significant levels of pollution into the region’s air. University of Virginia researcher Manuel Lerdau and State University of New York scientist Jonathan Hickman believe that kudzu is emitting sizable amounts of ground-level ozone - potentially increasing smog, aggravating respiratory ailments and quickening the pace of global climate change. Full Article

-------------------------------------------------------------

Montgomery County, MD Plans to Expand Eradication Efforts in Parks

By Lori Aratani Washington Post Staff Writer

It sounds like the title of a bad B-movie: Alien Plant Invaders. But in Montgomery County, Maryland, and communities across the country, the problem of alien plants -- also known as nonnative invasive species -- is one that is being taken seriously.

County officials have allocated an increasing amount of money to help combat the problem of nonnative invasive species, which crowd out or kill native plants in local parks. Since 2006, the county has almost doubled the amount it spends on efforts to get rid of the pests. In fiscal 2008, the county will spend $125,000 on eradication efforts. But a significant gap remains. That funding level enables workers to tackle only 350 of the estimated 33,000 threatened acres of county parkland. Full Article

--------------------------------------------------------------

Monday, December 24, 2007

Week of December 23

Merry Christmas!
-----------------------------------------------------------

New office within New York State DEC to focus on invasive species

ALBANY, NY (12/26/2007)(readMedia) -- With invasive species proliferating throughout New York’s waterways, forests and farmlands, Department of Environmental Conservation Commissioner Pete Grannis announced today the formation of a new office within DEC to focus on one of the state’s fastest growing environmental threats.

The new Office of Invasive Species will bring together biologists and foresters to develop ways to combat the problem, and work with universities, other state agencies and non-profit organizations to support research and raise public awareness. From zebra mussels to Eurasian water milfoil to Sirex wood wasps, hundreds of non-native plants and animals have invaded New York – especially in the last decade, thought to be linked to the rise in global shipping – posing threats to ecosystems.

The new DEC office will involve biologists and foresters in developing ways to combat invaders, also working with universities, other state agencies and non-profits to support research and raise public awareness, the agency said. Headed by biologist Steve Sanford, it will have a staff of four.

Earlier this year, Governor Spitzer signed a law to create the New York State Invasive Species Council, comprised of representatives of nine state agencies and an advisory committee of business, academia and conservation interest groups. In addition, the 2007-08 State budget included $5 million for invasive species programs.

The new office also will aid efforts to craft an integrated map that pinpoints invasives in and near New York, create an information clearinghouse (within New York Sea Grant, a research organization) for invasives and work with the federal government. To find more information, go to DEC’s Invasive Species page on the Web: www.dec.ny.gov/animals/265.html.
News Release

------------------------------------------------------------

Connecticut group urging program to cull deer

JOHN BURGESON, The Connecticut Post

Odds are if a Connecticut resident falls prey to an animal, it won't be from an attack by a shark, bear, copperhead or mountain lion. It will be a deer. Deer, according to a group trying to control the animals' numbers, can be the cause of death to motorists in the region or they can be the source of chronic illness by spreading Lyme disease. According to the Fairfield County Deer Management Alliance, Bambi's image is nothing to fawn over. The alliance aims to blunt what it feels are the dangers posed by large numbers of deer in the region by encouraging hunting — by professional sharpshooters or sportsmen. The group's goal is to get the population of deer reduced to the point where Lyme disease will be eradicated and vehicle-vs.-deer accidents will be greatly reduced. According to the alliance, there are far too many deer for the suburban environment to support. The alliance is sponsoring a study in 15 Fairfield County communities to determine the density of the deer tick population and the percentage infested with Lyme disease. "People don't understand the threat posed by the excess numbers of deer," said Dr. Georgina Scholl, the alliance vice chairwoman and spokeswoman, who maintains that Lyme disease can be eradicated in the state if deer numbers are brought under control. Full Article

Bloggers note: While the white-tailed deer (Odocoileus virginianus) is a native species in Connecticut (and surrounding states) and as such is generally not considered to be invasive, it has to some degree become destructive in its native region, with negative impacts similar to those of invasive species. The deer population has increased greatly due to human development, which leads to an abundance of habitat edges where deer thrive. Also, removal of predators has allowed numbers to soar. White-tailed deer have a tremendous impact on their habitat because of their huge numbers and the amount of food needed to support this population. Large numbers lead to overbrowsing which affects forest succession and other ecological conditions. Thus, white-tailed deer are occasionally considered to be pests in their native range.

-------------------------------------------------------------

Flap Over Mute Swans in Connecticut

HARTFORD, Conn. (Boston Globe) — The Connecticut Audubon Society is asking the state Department of Environmental Protection to remove swans from critical marine habitats, claiming the graceful birds are invaders causing serious environmental harm. Defenders of the swans say any move against the birds is unacceptable. "If the DEP tries to target the mute swan, we'll give them a full-fledged war," said Kathryn Burton of East Lyme, founder of Save Our Swans USA. The group has sued other states that have tried to curb the swan's rapid population growth.

Connecticut Audubon plans to lobby state legislators to give state environmental officials authority to control the number of mute swans. In Connecticut, the swans are a protected species. "Mute swans may be beautiful, but the havoc they wreak is anything but," said Milan Bull, the Audubon Society's senior director of science and conservation. "They create a marine desert below the waterline and drive away native species."

Connecticut Audubon says the swan population totals more than 1,100, particularly along the shoreline, which is already affected by rising water temperatures and pollution. The mute swan is expanding inland where it has been spotted in Avon and Woodstock. New York and Rhode Island allow the shaking of eggs until they are no longer viable, but Connecticut forbids the destruction of eggs and the hunting of any swan. Full Article

-------------------------------------------------------------

Pennsylvania Announces New Invasive Species Council Web Site

HARRISBURG, PA – People can learn how Pennsylvania is protecting against invasive plants, animals and insects by logging on to the new Invasive Species Council Web site, Agriculture Secretary Dennis Wolff said today. The Web site can be accessed by clicking on “Invasive Species Council” under the Agriculture site list at http://www.agriculture.state.pa.us/.

-------------------------------------------------------------

Study: Garlic Mustard Suppresses the Growth of Native Tree Seedlings by Disrupting Belowground Mutualisms

The impact of exotic species on native organisms is widely acknowledged, but poorly understood. Very few studies have empirically investigated how invading plants may alter delicate ecological interactions among resident species in the invaded range. We present novel evidence that antifungal phytochemistry of the invasive plant, Alliaria petiolata, a European invader of North American forests, suppresses native plant growth by disrupting mutualistic associations between native canopy tree seedlings and belowground arbuscular mycorrhizal fungi. Our results elucidate an indirect mechanism by which invasive plants can impact native flora, and may help explain how this plant successfully invades relatively undisturbed forest habitat. Link

------------------------------------------------------------

Donation will help combat weeds on Maryland trail

A stretch of the Capital Crescent Trail in Bethesda, Maryland is about to get a little cleaner, thanks to a donation by a trail advocacy group. The Coalition for the Capital Crescent Trail, a group that fights for the trail and its users, recently donated more than $20,000 to help Montgomery County combat non-native invasive plants along the popular path. Full Article

------------------------------------------------------------