ASSETS

  Overall level of expression of Eutrophic condition

 

  1            

High
primary
symptoms

 
 
 
 
  0,6            

Moderate
primary
symptoms

 
 
 
 
  0,3            

Low
primary
symptoms

 
 
 
 
  0   0,3   0,6   1
   

Low secondary
symptoms

 

Moderate secondary
symptoms

 

High secondary
symptoms

 

  

  Primary symptoms 

 

Zone Area(km2)
(Az)
Value(Vij) Az/At x Vij
Chlorophyll a Macroalgal growth Chlorophyll a Macroalgal growth
Mixing 31.08 1.000 0.000 0.353 0.000
Mixing 10.36 1.000 0.000 0.118 0.000
Mixing 31.08 0.500 0.000 0.177 0.000
Seawater 15.5 0.250 0.250 0.044 0.044
Sum At = 88.02 km2 - - 0.691 0.044
Primary symptoms level of expression value for the estuary: 0.37 Moderate

 

  Secondary symptoms

 

Zone Area(km2)
(Az)
Value(Vij) Az/At x Vij
Dissolved oxygen Nuisance algal blooms Toxic algal blooms Dissolved oxygen Nuisance algal blooms Toxic algal blooms
Mixing 31.08 0.500 1.000 0.250 0.177 0.353 0.088
Mixing 10.36 0.500 1.000 0.250 0.059 0.118 0.029
Mixing 31.08 0.000 1.000 0.250 0.000 0.353 0.088
Seawater 15.5 0.000 0.000 0 0.000 0.000 0
Sum At = 88.02 km2 - - - 0.235 0.824 0.206
Secondary symptoms level of expression value for the estuary: 0.82 High

 

  Synthesis

 

Indices Methods Parameters/ Values / EAR Index category
Overall
Eutrophic
Condition
(OEC)
PSM Chlorophyll a 0.691 0.37
Moderate
High
Macroalgal growth 0.044
SSM Dissolved oxygen 0.235 0.82
High
Nuisance algal blooms 0.824
Toxic algal blooms 0.206

 
            Page : 19