6.4- Chlorophyll Concentration in Coastal and Marine Waters

Chlorophyll-a (Chl-a), as an indicator of phytoplankton biomass, carries out the photosynthesis, by which primary organic matter is introduced into the foodchain. Organic matter produced in the euphotic zone, is degraded by bacterial activity, depletes oxygen essential for aquatic life. This indicator is also rergarded as an indicator of eutrophication.

Laboratory, Measuring and Monitoring Department of the Ministry of Environment and Urbanization implemented “Integrated Marine Pollution Monitoring Programme” with TUBITAK-Marmara Resarch Center. In the  programme, ecological and chemical monitoring was done twice a year in all seas of Turkey: Mediterranean Sea, Aegean Sea, Black Sea and Marmara Sea.

2014-2016 Chl-a assessments showed that all marine waters of Turkey have sufficient solarination. Peak values of Chl-a concentrations occur due to primary production in winter seasons when land based nutrient loads increase. Besides this, no significant difference is observed among years during 2014-2016 monitoring period.

 

GRAPH 42- MEDITERRANEAN SEA SURFACE WATER (0-10M) Chl-a AVERAGE CONCENTRATIONS IN COASTAL WATER BODIES (CWB)

Source: “Integrated Marine Pollution 2014-2016 Programme” Summary Reports (2017).

 

GRAPH 43- AEGEAN SEA SURFACE WATER (0-10M) Chl-a AVERAGE CONCENTRATIONS IN COASTAL WATER BODIES

 

GRAPH 44- BLACK SEA SURFACE WATER (0-10m) Chl-a AVERAGE CONCENTRATIONS IN COASTAL WATER BODIES (CWB).

GRAPH 45- MARMARA SEA SURFACE WATER (0-10m) Chl-a AVERAGE CONCENTRATIONS IN COASTAL WATER BODIES (CWB)

Sources: “Integrated Marine Pollution 2014-2016 Programme” Summary Reports (2017)