Would dissolved oxygen content in water increase or decrease with an increase in temperature and salt content?
Answer:
I don't know about salt content, but recently on a science and technology show up here a scientist went over how when you raise the temperature of water, the oxygen levels drop. This is because cold water disolves oxygen in it better than warm. You can see this if you have a cold cup of water, and you leave it in a room and the temperature goes up, and it develops bubbles in the glass, those bubbles are air that is no longer diluted. Most of it just escapes out the top.
You also see this if you have a pot of water, and you heat it up, before it boils you see bubbles, those bubbles are air that's coming out of the water.
It's a problem for fish mostly, as they need certain levels of oxygen to survive, and even a small change in temperature means less oxygen for them.
So increase water temp, decrease oxygen amount. Not sure about salt content though.
will decrease with temperature... not sure with the salt content.
http://www.lenntech.com/why_the_oxygen_d...
DO concentration in water will decrease with increasing temperature
And
DO concentration in water will decrease with increasing salinity
http://www.rsbs.anu.edu.au/researchgroup...
O2 levels would go down with temperature increase because it will promote the growth of algae and it will use the O2 in the water to grow and spread the increase of salt content would not have an effect on O2 levels, idon't believe, but the salt content in water will most likely go down because of the ice caps and snow melting aournd the world and the same salt will be in more water therefore there will be less salt content per cubic foot of water than before global warming happened
Melting polar ice caps would delute the water
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