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Thursday, March 28, 2013

Thursday, March 14, 2013

Quiz on Kiara, Shelby, and Tristen's


Which rivers are deemed dead because of the acids in the water?
Which salmon are least sensitive to low p.h. levels?
Do the salmon die immediately when p.h. is below tolerance?

Wednesday, March 6, 2013

Effects of Pebble Mine

Dissolved copper is the most significant metal contaminate coming from Pebble Mine. Others include antimony, arsenic, cadmium, chromium, lead, mercury, nickel, selenium, and zinc. All of these are bad for salmon!
Metals in water can impair algae
These contaminants are also toxic to aquatic organisms such as macro-invertebrates ------------------>
Juvenile salmon are in danger from the effects of dissolved copper because they're most sensitive to it.
Physiological-functioning of organisms
Sub-lethal- not quite lethal
Incipient-developing