Another pond is dyikng

Images made through a microscope. All subject types.

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Olympusman
Posts: 4813
Joined: Sun Jan 15, 2012 12:31 pm

Another pond is dyikng

Post by Olympusman »

I have noted before that many of ponds that have been giving me generous specimens have been dying out, and my speculation has been that the environments in these ponds have been taken over by cyanobacteria, creating a toxic environment. The result is a damaged biota which allows opportunistic flora and fauna to thrive - in many cases desmids predominating. This phenomenon has finally stricken one of my most dependable dipping sites. There are clouds of cyanobacteria everywhere. I'm not seeing any rotifers or ostracods, among other common organisms. Even spirogyra is getting scarce. The alarming thing is that the biota in a pond is the very bottom of the food chain.
Cyanobacteria A.jpg
Cyanobacteria B.jpg
Cyanobacteria C.jpg
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

houstontx
Posts: 358
Joined: Fri Jul 31, 2015 1:07 pm

Re: Another pond is dyikng

Post by houstontx »

I this just an end of summer thing or climate change thing...probably a little of both

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