3. Sulfur Cycling in Coastal Upwelling Systems
49
o I
CJ
- - -
8
'0
20
30
30
I
Land areas
More zooplankton than phytoplankton
Zooplankton = phytoplankton
More phytoplankton than zooplankton
N
C)
Figure 3.2. Relative phytoplankton and zooplankton.
phytoplankton are classified as cloudy, although where phytoplankton
equals zooplankton biomass, the region is predominantly cloudy (17.96%
of the marine region). In addition, regions that are predominantly clear
also tend to occur in regions where phytoplankton exceed zooplankton.