Activities 1-5 Flashcards
What is the effect of reduced supply of nutrients from upwelling?
It results in a decrease in plankton concentration.
What is the water conduction-current?
Cold water moves down, warm water moves up.
What does pH stand for?
“Potential of hydrogen”.
What does pH measure?
The amount of hydrogen ions in an aqueous medium.
How does pH relate to community metabolism?
It regulates the rate of total community metabolism.
What is hardness in water?
The calcium and magnesium content of water.
How is hardness expressed?
As the equivalent of ppm CaCO3.
Why are calcium and magnesium important in soil?
They are important in mineral nutrients, affecting pH and solubility of carbonate & phosphate.
What is nitrogen’s role in life?
It is one of the major elements required for life.
How is nitrogen used by living organisms?
It is converted to ammonia, nitrates, or other organic forms.
What is dissolved oxygen?
A measure of oxygen that is available in water for organisms.
What is salinity?
The total amount of soluble salts in water or soil.
What ions are included in salinity?
Common ions such as Ca, Mg, K, Na, Cl, SO4, HCO3, and CO3.
Why is salinity important?
It affects osmotic effects on organisms and oxygen solubility.
What is phosphorus critical for?
Growth.
