gases and nutrients Flashcards
1
Q
the most abundant gases in the air are
A
N2- 78%
O2-21%
Trace gases - 1%
2
Q
the most abundant gases in the seawater are
A
Nitrogen(inactive),
Oxygen(active) not soluble
Carbon Dioxide ( active)- very soluble
3
Q
what are some trace gases in the ocean
A
Ar, He, Ne, Kr, Xe, Rn- inert/ not active
SO2, N2O, CH4, - reactive
DMS- produced by phytoplankton near the surface.
4
Q
seawater concentrations are controlled by
A
Atmospheric concentrations
Exchange Rates w/t atmosphere
Solubility- Temp, Sal and Pressure
Biology- Photosynthesis, Respiration, Decomposition
5
Q
water is more soluble at ___ temp ___ salinity and ____pressure
A
low:low:high
6
Q
is the ocean a source of nutrients
A
NO
7
Q
where do nutrients in the ocean come from ?
A
LAND via rivers
8
Q
what’s the Redfield ratio
A
106 C , 16 N 1 P
