No, not really.
It's just relative to the production of O2, or, the rate of plant growth.
O2 production = plant growth.
It has little to do with saturation.
Localized levels of O2 can hit 200%, while the water elsewhere in a weed mat will be 90%. Both locations can and do pearl.........
At high plant growth rates, obviously the levels will go over 100%, the higher the rate, the more pearling you see, but this has little to do with saturation, merely a correlation with growth, not really to do with 100% or more saturation at ambient.
Ambient saturation vs the maximum that can be dissolved are quite different concepts that do seem to get confused unless explicitly stated.
While much over 2-3ppm is considered beyond 100% saturation from ambient for CO2, we know we can add a lot more before you reach the point where you cannot dissolve more in the water. Likewise, for O2, however it's not nearly as soluble, but you can get a lot more than say 20ppm in there if you wanted to, it will degas, but if you add it faster than it degases, just like CO2, you can get more in there.
Regards,
Tom Barr
