What problem will create when too much algae?
Excessive algae growth will starve or suppress other forms of aquatic plant life, and can block sunlight necessary for their proper growth. Taste and odour problems in drinking water and sometimes even fish kills are associated with excessive blooms of planktonic algae.
Is Dissolved oxygen harmful to fish?
A dissolved oxygen level that is too high or too low can harm aquatic life and affect water quality. Fish and crustaceans obtain oxygen for respiration through their gills, while plant life and phytoplankton require dissolved oxygen for respiration when there is no light for photosynthesis.
At what time of day are dissolved oxygen levels most likely to be lowest?
Natural processes also affect the dissolved oxygen levels: Warm water holds less dissolved oxygen than cold water. The lowest levels of DO usually occur in the morning, because photosynthesis stops at night while respiration continues. Water at higher altitudes holds less oxygen.
Which would increase the amount of dissolved oxygen in a pond?
Oxygen enters water through diffusion from air, wind and wave action and plant photosynthesis. Dissolved oxygen levels are increased by supplementing wind and wave action, adding plants to water and exposing water to purified oxygen.
How does the temperature of water affect its ability to hold oxygen?
Dissolved Oxygen and Water Temperature The solubility of oxygen and other gases will decrease as temperature increases 9. This means that colder lakes and streams can hold more dissolved oxygen than warmer waters. If water is too warm, it will not hold enough oxygen for aquatic organisms to survive.
Does warm water hold less oxygen?
The temperature and salinity of water influence how much oxygen it can hold. Warm water holds less dissolved oxygen than cold water because the molecules are moving faster than in cold water and thereby allow oxygen to escape from the water. (See Temperature section for more information.)
Why does dissolved oxygen decrease with temperature?
Air and Water Temperature Increases Lower levels of dissolved oxygen due to the inverse relationship that exists between dissolved oxygen and temperature. As the temperature of the water increases, dissolved oxygen levels decrease.
Does salinity affect dissolved oxygen?
The solubility of oxygen in water is dependent on salinity, while the partial pressure and the % saturation of oxygen is not affected by changes in salinity. Increasing the salt concentration leads to a decrease in oxygen solubility.
How does temperature affect cellular respiration?
The increase in temperature enhances the rate of cellular respiration. It is due to the heat speeds up the reactions, means the kinetic energy is higher. It means reactions speed up and rate of cellular respiration increases. When temperature decreases, in order to conserve energy, cellular processes slow.
What is the optimal temperature for cellular respiration?
The optimum temperature of respiration is 34–35°C., with limits at about 10° and 50°C.
How might a change in PH and temperature affect the overall results of cellular respiration?
If the temperature goes too high, the enzymes responsible for cellular respiration will denature. This will result in the reaction going slower (as more of the enzyme molecules denature). Eventually, high enough temperatures will denature all of the enzymes and the reactions will stop completely.