Salmon

               The effects of pollution on salmon

Facts

*Sock-eye salmon are the most sensitive to low p.h waters

*18 miles of river was lost/deemed dead because of the acid waters

 *The current Alaska water quality standard requires a pH between 6.5 and 8.5

*pH less than 4.5: All salmon and other fish species will die or be displaced from a water body.

*An acceptable alkalinity level for salmon culture is in the 40 to 100 ppm range

*pH levels of 7.0 to 8.0 are considered optimal to maintain a productive ecosystem

*If pH falls below the tolerance range even for a short period, death can occur

*when having acidy waters prey species for salmon drop significantly.

 Vocabulary

logarithm -A quantity representing the power to which a fixed number (the base) must be raised to produce a given number.

macro-invertebrates- small bugs with no backbone

acidification- the process of making waters have more acids In them

conductance- the degree to which an object conducts electricity.


Pictures