RoLo,
You have said a couple of times that barometric pressure doesn't affect water temparature. (I've included your last quote below.) I agree with that statement. And it is your contention that the pressure has nothing to do with the bass's behavior. It is only the water temperature that is affecting the bass. What I have read is that barometric pressure affects a bass irregardless of any correlation in the air temperature. I have seen very high barometric pressures with warm, clear, sunny days and these can be some of the more difficult days to put alot of fish in the livewell, at least in my experience. I've also had storms come in where the pressure drops dramatically but the temperature doesn't, and I've caught alot of fish. The water temperature in these instances remained fairly constant. This link describes the supposed effect that barometric pressure has on the swim bladder of a bass, irregardless of the temperature. (http://home.comcast.net/~rkrz/infoarch/fyibarometer.htm) I'm just trying to learn here by playing the devil's advocate. Are there any fishery biologists out there who have definitive evidence regarding this?
Every part of the fish's anatomy (for that matter the human anatomy) is affected by barometric pressure.
However, our bodies are designed to easily tolerate these natural changes in atmospheric pressure
and for the most part we're unaware of their existence.
Fish on the other hand are cold-blooded animals. Consequently, anything that affects
water temperature will affect the disposition, movement and metabolism of bass.
It's an involuntary process in which the fish has no say (their behavior is dictated by water temperature).
Bottom Line: Air temperature affects water temperature, but barometric pressure does not.
A rise in barometric pressure is typically accompanied by a drop in air temperature.
A drop in barometric pressure is typically accompanied by a rise in air temperature.
It has always been my belief that a rise in barometric pressure that is not accompanied
by a drop in air temperature is a 'non-event'. That is to say, barometric pressure is a symptom
rather than a cause.
Bass in shallow water are the first fish affected by air temperature changes,
but a persistent change in air temperature eventually affects bass in deep water as well.
Roger