"Ian Sutherland" wrote in message
. uk...
I have a friend who is a keen fisherman. The lake where he often goes is
run by a man who told him that high atmospheric pressure can push the
oxygen out of the water and thus adversely affect the fish.


I would have thought that increasing the atmospheric pressure would
increase the dissolved oxygen content. A much bigger effect would be
caused by an increase in temperature of the water (reducing solubility).

All true Ian, but I suppose as wind is usually light or calm with high
pressure, there will be less transfer of gasses at the water/air interface.
On the other hand it is more likely to be summy with high pressure, so the
aquatic plants may redress the O2/CO2 balance somewhat..