Transcript Baltic Sea, eutrophication and climate change, Uusimaa

Baltic Sea, eutrophication and
climate change, Uusimaa
case study
ASTRA Conference Gdansk
26th – 28th October 2006
Polona Rozman
What is eutrophication?
series of interlinked processes:
excess input or production of
nutrients and organic matter
enrichment
stimulates the
growth of algae
far-reaching
effects
direct hazard
imbalanced functioning
of the system
(HELCOM, FIMR)
Baltic Sea and eutrophiction
How does it look like?
www.fimr.fi
7.7.2006
www.fimr.fi
What has the climate change
to do with the eutrophication?
not directly
influenced
complex
phenomenon
(many
influencing
factors)
influenced
indireclty
Climate change and the
Eutrophication...
Climate Change most probably will affect the
eutrophication in the Baltic Sea
The relationship is nevertheless very complicated and
the consequences are hard to predict
Statistical analysis to confirm
the connection!
To show how the parameters that characterise
eutrophication (chlorophyll-a content, oxygen
content/saturation) can be explained by
oceanographical and nutrient parameters which will
be directly influenced by climate change
and by such mean to prove that trophic status of the
sea depends on climate change as well.
Multiple regression analysis
(1)
Data from the
SYKE
database, sea
stations for
Uusimaa
region, Gulf of
Finland, Finland
61 stations
from 1.9.1995
till 31.8.2006
from 15 up to 249 measurements per station in total
Multiple regression analysis
(2)
Parameters:
• Oxygen content, oxygen saturation, temperature,
salinity total phosphorus, total nitrogen, trubidity,
chlorophyll-a
Tool: SPSS
Time frame: September 2006 - January 2007
Thank you!
Contact and further information
Polona Rozman
[email protected]
Geological Survey of Finland
ASTRA project
www.astra-project.org