Luca's pic

Didymo Discovered in Vermont

Didymosphenia geminata a.k.a. Didymo a.k.a. 'Rock Snot'
News Articles:
"Residents, experts meet to discuss challenges facing area watersheds" August 13, 2007 article by John Waller from the Bennington Banner

" Stopping rock snot: Orvis, town come to defense of Batten Kill " August 11, 2007 article by Patrick McArdle from the Rutland Herald

"Watershed Alliance educates about river" August 10, 2007 article by Andy McKeever from the Bennington Banner

"Vt. 'rock snot' raises river alert" August 8, 2007 article by Amy Carr from the Berkshire Eagle
didymoThe culprit.
"A slippery, stubborn invader" August 8, 2007 article by Brian Nearing from the Albany Times Union

"Bad algae found in premier trout stream" August 7, 2007 article by Candace Page from the Burlington Free Press

" River-choking 'rock-snot' algae found in Batten Kill River" August 7, 2007 article by Daniel Barlow from the Times Argus

" 'Rock snot' evidence found in Batten Kill" August 7, 2007 article by Daniel Barlow from the Rutland Herald

"Rock Snot in Batten Kill" August 7, 2007 article from the Bennington Banner

" 'Rock snot' in Vt. river alarms biologists" August 6, 2007 article by Lisa Rathke, Associated Press, from the Times Argus

"Yankee Notebook: An alga by any other name" August 5, 2007 article by Willem Lange from the Rutland Herald

"Radio campaign to stop 'rock snot'" July 28, 2007 article by Lisa Rathke, Associated Press, from the Rutland Herald

"Algae Invader Threatens Vermont Rivers" - July 15, 2007 article from the Burlington Free Press

"Mother Nature answers back with a vengeance" - July 15, 2007 article from the Barre Montepelier Times Argus

"States to post signs along rivers about 'rock snot'" - July 15, 2007 Associated Press article from the Concord Monitor Online

"State launches didymo control campaign" - July 13, 2007 - interview with Lawton Weber, by John Dillon from VPR

"Education, not eradication, for 'rock snot': Horse is already out of the gate" - July 14, 2007 article by Dennis Jensen from the Rutland Herald

"Fishing Guide: 'Rock Snot' could spell doom for VT trout" - July 12, 2007 Associated Press article from the Bennington Banner

"Didymo Called Dire Threat" - July 11, 2007 article by Dennis Jensen, from the Rutland Herald

"New invasive algae species discovered in Vermont" - July 9, 2007 - interview algae expert Angela Shambaugh, of the VT DEC, by John Dillon from VPR

"Invasive Algae Found in Vermont River" - July 8, 2007 article from the Barre Montpelier Times Argus

"Invasive species found along Connecticut River" - July 7, 2007 article from the Burlington Free Press

Press Releases:

VT ANR Announces Regional Approach to 'Rock Snot' - July 13, 2007 VT Agency of Natural Resources

VT ANR Convenes Regional 'Didymo' Goup - July 11, 2007 VT Agency of Natural Resources

VT ANR Confirms First Northeastern U.S. Infestation of "Didymo" - July 6, 2007 VT Agency of Natural Resources

Invasive Algae Threatens New Hampshire's Rivers and Streams -- Algae known as "Didymo" or "Rock Snot" can devastate waterbodies - July 11, 2007 NH Dept of Environmental Services

Anglers Urged to Stop Spread of Nuisance Algae - July 24, 2007 NY Dept of Environmental Conservation

New York DEC Warns of an Aquatic Nuisance Algae in Vermont: Anglers Can Take Steps to Prevent its Spread in New York Waters - July 24, 2007 NY Dept of Environmental Conservation

VT ANR Announces A Small Amount of Didymo Found in Batten Kill River - August 6, 2007 VT Agency of Natural Resources

NY DEC Announces NYSDEC Announces Didymo Found in Lower Section of Batten Kill - First Confirmation of the Aquatic Nuisance Algae in New York State - August 7, 2007 - New York State Department of Environmental Conservation

NY DEC Press release - August 7, 2007 - NY DEC

Other sources of information:
New! Joint VT/NH Didymo Site - including the Stop Rock Snot! poster.

Biosecurity New Zealand -- Didymo -- See this page for the recommended procedures for cleaning your gear in order to reduce the threat of spreading this invasive algae.

Lawton Weber is the fly fishing guide who discovered the presence of Didymo in the Connecticut River on June 25, 2007 and reported it to the VT ANR. Read his Fishing Reports/Comments on his Pleasant Valley Fly Fishing website.

Here's what the EPA has to say about Didymo.

From the Global Invasive Species Database.

The Mad Dog TU Chapter's Didymo Warning.

Wikipedia entry on Didymo.

Some Didymo info from Fly Rod & Reel Magazine.

Here's the Federation of Fly Fishers two cents.

didymo
The VT ANR is urging anglers to institute New Zealand's recommended procedures for preventing the introduction and spread of didymo: Check, Clean and Dry.
  1. Check: Before leaving a river or stream, remove all obvious clumps of algae and look for hidden clumps. Leave them at the affected site. If you find any later, do not wash them down drains; dispose all material in the trash.

  2. Clean: Soak and scrub all items for at least one minute in either hot (140 degrees F) water, a two percent solution of household bleach or a five percent solution of salt, antiseptic hand cleaner or dishwashing detergent.

  3. Dry: If cleaning is not practical, after the item is completely dry to touch, wait an additional 48 hours before contact or use in any other waterway.
Photos of Didymo courtesy of the EPA
     
     
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