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--- ecoop-eurodess:s9.2.5_-_ecosystem_health_in_the_baltic_sea [2009-11-18 10:32:19]
aleksi.nummelin@fmi.fi
+++ ecoop-eurodess:s9.2.5_-_ecosystem_health_in_the_baltic_sea [2022-05-31 09:29:32] (current)
@@ Line 27: / Line 27: @@
 ===== Demonstration =====
-==== Ecosystem health in the Baltic Sea - Ecological quality ratio====
+===Ecosystem health in the Baltic Sea - Ecological quality ratio===
+Ecological quality ratio, EQR, is a simple quantity representing the state of the ecosystem, thus (mainly) concentrating into the surface layer. It is the ratio between parameter’s actual and reference condition. It is constructed of three different variables; phosphate, nitrate and chlorophyll-a.
 {{:ecoop-eurodess:dess_image.png|}} {{:ecoop-eurodess:dess_legend.png|}}
-As the demonstration is placed on the late autumn and since it is averaged over rather short period of time it should be taken as an example which is still settling to its right value. It is clear from the ecosystem’s time scales that the relevant time period that should be taken account is at least two to four months long, maybe even an half of year. Since EQR has been calculated in FMI only for short time (1.5 months) and it did start after the cyanobacterial bloom it is not surprising that the EQR is higher than expected. Especially the Gulf of Finland seems to be in better condition than it should be, this can be however explained by the ecosystem adn model dynamics. Phytoplankton uses most of the nutrients during spring and summer and the surface nutrient concentration doesn't rise until mixing with deeper layers happens during autumn and winter (this hasn't happened yet in the model). Part of the explanation is also that the model is assimilated with observational data only in the spring.
+Figure 1 30 day average (17.10-17.11.2009) of EQR
+As the demonstration is placed on the late autumn and since it is averaged over rather short period of time it should be taken only as an example which is still settling to its right value. It is clear from the ecosystem’s time scales that the relevant time period that should be taken account is at least two to four months long, maybe even an half of year. Since EQR has been calculated in FMI only for short time (1.5 months) and it did start after the cyanobacterial bloom it is not surprising that the EQR is higher than expected. Especially the Gulf of Finland seems to be in better condition than it should be, this can be however explained by the ecosystem and model dynamics. Phytoplankton uses most of the nutrients during spring and summer blooming and the surface nutrient concentration doesn't rise until mixing with deeper layers happens during autumn and winter (this hasn't happened yet in the model). Part of the explanation is also that the model is assimilated with observational data only in the spring.