Maretec_Banner.gif (5157 bytes)
home_A.gif (1052 bytes) Aplications_A.gif (1063 bytes) Projects_A.gif (1063 bytes) Models_A.gif (1063 bytes) Publications_A.gif (1063 bytes) Staff_A.gif (1063 bytes)

Water Quality an Ecology
  Processes and forcing functions
 The Water quality model simulates primary and secondary production, two key ecosystem processes and nutrient recycling. The forcing functions are temperature and light. In most studied cases light, which is influenced by phytoplankton self shading and suspended particles, and nutrient availability are clearly the most influencing factors. 

 
Phytoplankton (mg C/L) distribution in the Tagus estuary during summer (1/7/1999)

Fito_Mapa4.jpg (12853 bytes)
Ammonia(mg N/L) distribution in the Tagus estuary during summer (1/7/1999)

Amonia_Mapa4.jpg (12608 bytes)
Nitrate (mg N/L) distribution in the Tagus estuary during summer (1/7/1999)

Nitrato_Mapa4.jpg (12325 bytes)

 
local.gif (2759 bytes)
The next pictures confront the model results in phytoplankton, ammonia and nitrate, with local measurements done over 4 consecutive years.
Time serie location
Phytoplankton concentration (mg ChA/L) at station 3.9 during a year.

Fito_35_71.gif (7341 bytes)
Ammonia concentration (mg N/L) at station 3.9 during a year.

Amonia_35_71.gif (7008 bytes)
Nitrate concentration (mg N//L) at station 3.9 during a year.

Nitrato_35_71.gif (7110 bytes)