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 Chlorophyll a Mixing 831.9 0.500 0.385 Seawater 191 0.250 0.044 Tidal freshwater 56.1 0.250 0.013 Sum At = 1079 km2 - 0.443 Primary symptoms level of expression value for the estuary: 0.44 Moderate

  Secondary symptoms

Zone Area(km2) (Az) Value(Vij) Az/At x Vij Dissolved oxygen Nuisance algal blooms SAV Spatial coverage Toxic algal blooms Dissolved oxygen Nuisance algal blooms SAV Spatial coverage Toxic algal blooms Mixing 831.9 0.250 0.250 0.500 0 0.193 0.193 0.385 0 Seawater 191 0.250 0.000 0.500 1.000 0.044 0.000 0.089 0.177 Tidal freshwater 56.1 0.250 0.500 0 0 0.013 0.026 0 0 Sum At = 1079 km2 - - - - 0.250 0.000 0.307 0.563 Secondary symptoms level of expression value for the estuary: 0.56 Moderate

  Synthesis

Indices Methods Parameters/ Values / EAR Index category Overall Eutrophic Condition (OEC) PSM Chlorophyll a 0.443 0.44 Moderate Moderate SSM Dissolved oxygen 0.250 0.56 Moderate Nuisance algal blooms 0.000 SAV Spatial coverage 0.307 Toxic algal blooms 0.563