Does the temperature of the water effect the pH of the water or can the temperature effect the pH?

Does poor pH areas have less dissolved oxygen or could the poor pH  effect the dissolved oxygen?

pH is a measurement of how acidic or alkaline the water is. 7.0 is neutral, above is alkaline, below is acidic. Water temperature or dissolved oxygen are independent factors.

WRB

This is a quote from the article section. This is why I ask.

" On the other hand, photosynthesis by algae, aquatic plants, and phytoplankton will drive the local pH up. Chemical pollutants can raise or lower pH depending on the specific nature of the pollutant. Some soils are acidic. Others are basic. Soil run-offs, therefore, can significantly alter the pH of feeder creeks and those areas where they empty into the main lake or stream. Agricultural fertilizers and nutrients are typically basic. Run-offs from farmlands will often raise the pH of recipient waters."

This is a quote from the article section. This is why I ask.

" On the other hand, photosynthesis by algae, aquatic plants, and phytoplankton will drive the local pH up. Chemical pollutants can raise or lower pH depending on the specific nature of the pollutant. Some soils are acidic. Others are basic. Soil run-offs, therefore, can significantly alter the pH of feeder creeks and those areas where they empty into the main lake or stream. Agricultural fertilizers and nutrients are typically basic. Run-offs from farmlands will often raise the pH of recipient waters."

And?

I don't think that water temperature has a direct effect on Ph but it does have an effect on things that can change the Ph. (Dead plant decay, photosynthesis and so on)

I don't think that water temperature has a direct effect on Ph

It doesn't.  pH at 15C is the same as it is at 20C or 25C.  Temperature is not a factor in pH.

pH is a measure of the availability of positively charged hydrogen ions in a given solution. 

At a deeper look, temperature can effect PH, through photosythesis.  Algae would convert carbon dioxide in the water to oxygen. Carbon dioxide mixed with water makes carbonic acid. So in theory the less CO2 the less carbonic acid, the higher the PH.

So IMO there is no direct effect but it could be effected in a round about way...photosythesis, decay, etc.

here is an interesting article:

http://www.bassresource.com/fish_biology/hot-summer-ponds.html

To change the pH for the pond he suggested using an air pump. The lower pH was caused by the hot temps and lowered water volume and to much fish by product. In the article above it talks about a layer that has poor oxygen levels down deep because of the fish by product. (the fish by product would act the same as weed decay on the pH)

I would agree that temperature would not be a factor in changing pH other than the fact that the change in season effects what the plants are doing in their life cycle. Like fall turn over and colder temps that kill underwater vegetation. I also don't feel that there would be a set buffer between good pH and poor pH areas. Like a change in water temp because of depth. I do feel that the farther away from the acid producing substance the better the pH. I believe fish will migrate to the more favorable pH.

Why would this be important?

Well areas that where clear that become muddy because of rain or run off will have poor pH and fish will move to clearer water. So if you where fishing a cove and catching fish on the deep side or channel side of the cove and the mud rolls in fish that where on one side of the cove might migrate to the other side because of clearer water and better pH. If you where fishing an weed flat that the state comes through and sprays it. The fish will migrate to areas that have more favorable pH which could be a depression area or the edge of the weeds. If the fish was sitting in pH that was 7.5 and it drops to 5.0 the fish will migrate to an area that is close and has the same 7.5 pH. The same would also be true that if that 7.5 pH was in 7ft of water the fish would more than likely be sitting in the same depth in the new area. Even if it meant that they suspended in 7 ft water in a tree top for instance. If air changes the pH of the water then areas that have more air like living weed growth or windy banks will have higher oxygen content. Because of this the fish would not need to move as far to find better pH. I would think oxygen producing areas would have a buffer effect to the acidic areas more so then normal areas that the acidic water slowly mixes or gets diluted. In the spring time areas that have good pH would be the first areas that fish will move up to stage and spawn. As the lake pH gets more favorable farther up the lake the rest of the lake fish begin to move up.

Any thoughts? :-?