Saturday, October 5, 2013

DNR urges people to watch for aquatic invasive species during ‘cabin close-up’

(DNR news release, October 2, 2013)
With winter just around the corner many Minnesotans are pulling in their boats and closing up cabins for the season. It’s the time of year when the Department of Natural Resources (DNR) asks every cabin and lakeshore owner to watch for aquatic invasive species (AIS) when removing docks, boat lifts, swim rafts and other equipment from the water.

“The end of the season offers an important opportunity to monitor for AIS,” said Ann Pierce, DNR invasive species unit supervisor. “Carefully inspect everything you remove from the water to see if there are invasive species attached. Your observations will provide invaluable information to the DNR in tracking the distribution of AIS – and give us a chance to rapidly respond if new infestations are found.”

 - Continue reading the article to learn about where to look, what to watch for and what you should do if you suspect an infestation here:

Tuesday, October 1, 2013

LLAA's October Email from Arthur Howe:

Tests show NO zebra mussel larvae in Long Lake

Do you know that LLAA volunteers like Al Kiecker, pictured below, have been been testing for zebra mussel veligers (larvae) for the past two years?  Any veligers are contained by the extremely fine mesh net and the samples are analyzed at a cost of $90, paid for from your annual membership dues.  NO zebra mussel veligers have been found in our Long Lake samples.

Female zebra mussels can produce up to 1 million eggs per year.  Fertilized eggs develop into microscopic, free-living larvae (called veligers) after about 3 to 5 days and disperse by free-swimming for up to a month.

Al Kiecker and other members of the LLAA Water Quality Monitoring Team have been trained by RMB Environmental Laboratories, coordinated by the Hubbard County Soil and Water Conservation District.  LLAA has purchased the plankton net, which is very fine mesh (64-micron).  The composite sample from 3 specific locations is preserved with 91% Isopropyl Alcohol, and sent to RMB for analysis.

Because zebra mussel veligers are microscopic and are not visible to the naked eye, they can inadvertently be transported in bilge or bait water from an infested lake, thus the Minnesota law against the transport of water in boats.  Drying for at least 5 days, or immersion in very hot water, kills the veligers and any adult zebra mussels.

News brought to you by the Long Lake Area Association: and Our Lake page.