Tagus Estuary - EU Directives

INDEX

Abstract

Rationale

Estuary Loads

Location

Rivers discharges

WWTP Discharges

Relative Loads

Model Implementation

Domain

Hydrodynamics

Transient Circulation

Residence Time

Conclusions

Reference Scenario

Time Series Validation

Properties Spatial Distribution

Integration Boxes

Total Balance in Estuary

Scenario1- 50% Reduction in nitrate river load

Properties Spatial Distribution

Total Balance

Scenario2 – 100% Reducion in nutrients WWTP discharge

Properties Spatial Distribution

Total Balance

Conclusions
 
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Conclusions

  • The Tagus Estuary is light limited
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  • A large part of the nutrients is exported to the ocean without being consumed
  • The 50% reduction of Nitrate by Agriculture Systems would not reduce the primary production of biomass in the Tagus Estuary
  • The total nutrients removal by WWTP would have negligible effects on the primary production of biomass 

 

EU Directives
OSPAR
Tagus Estuary Mondego Estuary Sado Estuary

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