Zebra mussels invade Lake Mendota

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Cadfael
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Zebra mussels invade Lake Mendota

Postby Cadfael » Tue Nov 08, 2016 11:50 pm

I remember an obscure article several years ago saying they'd found, like, three zebra mussels in one of the lakes, and then nothing. But now it looks like they've hit their stride

As recently as July, densities of adult zebra mussels in places Spear was monitoring were about 10-to-15 individuals per square meter, extremely low by standards of the Great Lakes region, Spear says, adding: “about as low as you’ll find them in systems where they’re known to exist.”

However, “we saw a very strong recruitment event in mid-August,” Spear says, “which boosted densities from 10-20 per square meter, upwards of 200 per square meter in some places. If any decent proportion of these young mussels are left by reproduction time next year, I think we will definitely be seeing continued exponential growth of the population.”

This is what an invasion looks like.

This is a dragonfly nymph with two freaking zebra mussels on it. They attached and grew between molts! I knew they could grow fast but I didn't know it was that fast.
Image

If you love those lakes, get out there and take a good look before the snow flies. Gonna be a different lake next summer.

Cadfael
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Re: Zebra mussels invade Lake Mendota

Postby Cadfael » Thu May 18, 2017 7:12 pm

This is a rock from Lake Mendota. Yesterday.
Image

narcoleptish
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Re: Zebra mussels invade Lake Mendota

Postby narcoleptish » Thu May 18, 2017 10:24 pm

Wow, that looks like a passenger train in India.

We ruin everything.

bdog
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Re: Zebra mussels invade Lake Mendota

Postby bdog » Fri May 19, 2017 7:02 am

The zebra mussel (Dreissena polymorpha) is a small freshwater mussel. This species was originally native to the lakes of southern Russia and Ukraine, being first described in 1769 by the German zoologist Peter Simon Pallas in the Ural, Volga, and Dnieper rivers.


This was not a boating accident.

O.J.
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Re: Zebra mussels invade Lake Mendota

Postby O.J. » Fri May 19, 2017 7:27 am

bdog wrote:
The zebra mussel (Dreissena polymorpha) is a small freshwater mussel. This species was originally native to the lakes of southern Russia and Ukraine, being first described in 1769 by the German zoologist Peter Simon Pallas in the Ural, Volga, and Dnieper rivers.


This was not a boating accident.


Why did Trump exempt those countries from his Mussel travel ban? Hmmm....

Ducatista
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Re: Zebra mussels invade Lake Mendota

Postby Ducatista » Fri May 19, 2017 12:26 pm

Cadfael wrote:If you love those lakes, get out there and take a good look before the snow flies. Gonna be a different lake next summer.

That sucks. I hope we at least get some seasons of clear water before the toxic-bloom and algae-mat shoes drop.

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Re: Zebra mussels invade Lake Mendota

Postby Ned Flanders » Fri May 19, 2017 1:08 pm

Let's fill the lakes with liquid butter, grab some beer and get to work.

Henry Vilas
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Re: Zebra mussels invade Lake Mendota

Postby Henry Vilas » Fri May 19, 2017 1:12 pm

Ducatista wrote: I hope we at least get some seasons of clear water before the toxic-bloom and algae-mat shoes drop.

Not much of a consolation, but zebra mussels do eat algae.

Roy
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Re: Zebra mussels invade Lake Mendota

Postby Roy » Fri May 19, 2017 1:58 pm

And other zebras have talents.


gargantua
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Re: Zebra mussels invade Lake Mendota

Postby gargantua » Fri May 19, 2017 3:46 pm

Henry Vilas wrote:
Ducatista wrote: I hope we at least get some seasons of clear water before the toxic-bloom and algae-mat shoes drop.

Not much of a consolation, but zebra mussels do eat algae.

From what I can recall on the topic, they clear up the lakes really well. Which allows the sunlight to reach the nutrient-rich lake bottom. Which promotes weed growth and algae blooms. In the long run, we're not winning this one.

Ducatista
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Re: Zebra mussels invade Lake Mendota

Postby Ducatista » Fri May 19, 2017 4:19 pm

gargantua wrote:
Henry Vilas wrote:
Ducatista wrote: I hope we at least get some seasons of clear water before the toxic-bloom and algae-mat shoes drop.

Not much of a consolation, but zebra mussels do eat algae.

From what I can recall on the topic, they clear up the lakes really well. Which allows the sunlight to reach the nutrient-rich lake bottom. Which promotes weed growth and algae blooms. In the long run, we're not winning this one.

Yup. Exactly the zebra mussel sequence I was talking about.

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Re: Zebra mussels invade Lake Mendota

Postby jman111 » Mon May 22, 2017 9:10 pm

Ducatista wrote:I hope we at least get some seasons of clear water before the toxic-bloom and algae-mat shoes drop.

Tonight was fantastic. I don't think I've seen water that clear in Mendota in, literally, years. I wish we had been out there with the sun higher in the sky. Check it out if you didn't get out there tonight.

Ducatista
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Re: Zebra mussels invade Lake Mendota

Postby Ducatista » Tue May 23, 2017 12:25 pm

Ooh, I'll check it out next time we have some sun. Saturday, looks like? Hope it's still clear by then.

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Re: Zebra mussels invade Lake Mendota

Postby jman111 » Fri May 26, 2017 11:10 am

The east end was still in great shape last night. It seems quite odd being able to watch fish darting around in 6-8 feet of clear water while scanning the sandy bottom of Warner Bay for anything interesting.

There's some surface scum starting to form out by Middleton and Fox Bluff. But, all-in-all, great conditions out there.

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Re: Zebra mussels invade Lake Mendota

Postby gozer » Sun Sep 09, 2018 1:31 am

headed downstream are they?
https://madison.com/ct/news/local/govt- ... 467a2.html

there's the blue-green algae connexion, i guess

u had better watch out
and better look close
at oars and ballast and all over your boat
zebra mussels are coming to town
they suck in the water
and they filter it twice
it looks crystal clear
but may not smell very nice
zebra mussels are coming to town

they cover all the boat launch
they cover up the rocks
but they'll cut your feet like steak knives
so don't take out your cock

now the die may be cast
but that's not even the half
more things will happen
u can see from a raft
blue-green algae is coming to town
the light penetrates
almost all the way down
better than eutrophication?
but it could make the fish drown
blue-green algae is coming to town

they'll propagate like rabbits
from lake to lake to lake
but they can't get there without your help
so be circumspect for goodness sake


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