I had a friend who is a biology professor at a local university do an analysis on my 3 acre pond. She found extremely high phosphorous levels, a huge amount of algae (which is why I asked her to look at the pond) and very low dissolved oxygen below three feet.

Questions:

Does excess algae contribute to low O2 levels? Or is the low O2 a byproduct of something else?

Will simply killing the algae help boost the O2 level? I understand that dying plant matter depletes O2, but will the O level bounce up once the decay process ends?

I guess I'm trying to figure out how (if) a high algae count is related to low O2 levels. How do they correlate?

Thanks for any help.