Let’s Talk about Cyanobacteria!

[tis]

Originally Posted by Susie Cougar

You are right, tis. In the ocean, it is called red tide. And it is everywhere.

Is it the same as red tide? I didn't know that.

[Grant]

Originally Posted by tis

Is it the same as red tide? I didn't know that.

No -- not the same thing, although they share some similarities. Karenia brevis causes "red tide" algal blooms in salt water. Cyanobacteria is a fresh water thing. But both are triggered by elevated nutrient levels that are exacerbated by humans. And they both can release toxins.

[rick35]

There are now red warning signs posted to the Shep Browns docks.

[SAB1]

Just got back from a ride. Amazing how expansive the areas are when you get into it. South end of Cow Island all the way up to and beyond south end of Sandy is covered with the stuff. Another bad area was the water between Round and Timber.

[Mr. V]

Dumb question perhaps, but can this stuff be harvested when in bloom and put to good use somehow?

Use fine nets to scoop it up then remove it.

I haven't seen it: is it too fine to be caught in a fine mesh net?

[ApS]

Originally Posted by Mr. V

Dumb question perhaps, but can this stuff be harvested when in bloom and put to good use somehow? Use fine nets to scoop it up then remove it.
I haven't seen it: is it too fine to be caught in a fine mesh net?

Gloeotrichia could be filtered with a paper coffee filter, but there's probably a billion gallons of Winnipesaukee's surface waters that would need to be filtered.

But is Gloeotrichia the more-dangerous of our several cyanobacteria species?

[fatlazyless]

Some excellent news; after ten days the two yellow signs, "Unsafe for Swimming or Wading" were removed yesterday, August 30 by the NH DES and the cold 65-degree Corcoran's Pond is now open to swimming. Is now open to go swim my 200-yards in the icy cold water with a neoprene vest, O'Neal thermo, and foam noodle swim flotation belt, doing the breast/side stroke and keeping my face and head out of the water.

Gimme some sun and 86-degree heat ........ get ready for the September Summer!

Good timing ...... what with the Waterville Valley, Sat-Sun-Mon Labor Day weekend ...... those yellow 'fecal bacteria' warning, Unsafe for Swimming and Wading signs are no longer present. So, did the Governor have anything to do with this or was it just coincidental? Whatever, unless you is a moose, the water is probably too danged cold now, in Corcoran's Pond.

[KPW]

Originally Posted by SAB1

Just got back from a ride. Amazing how expansive the areas are when you get into it. South end of Cow Island all the way up to and beyond south end of Sandy is covered with the stuff. Another bad area was the water between Round and Timber.

Barber Pole?

[rick35]

Originally Posted by rick35

There are now red warning signs posted to the Shep Browns docks.

Saw a new sign posted over one of the red ones tonight. I think the wording has been softened a little.

https://www.des.nh.gov/sites/g/files...cyano-sign.pdf

[Biggd]

They must have had a bloom at the Waukewan beach on Saturday. When I went by about 10am they were putting those floating warning flags about 100 feet off shore from the boat launch to the beach but I still saw people swimming.