The Eutrophication Challenge aims to:
- To produce an overview of datasets on eutrophication in the entire Black Sea including remotely sensed surface chlorophyll, locally monitored nutrients, oxygen, ecosystem characteristics and chlorophyll profile concentrations.
- To assess the extent and intensity of the eutrophication phenomenon in all areas known to be significantly affected by river and other discharges.
- To evaluate the time evolution of eutrophication in the entire Black Sea.
- To assess the performance of indicators such as the TRIX or EEA’s CSI023.
The workflow is made of three major activities:
Activity 1: to search for upstream data to meet challenge requirements
- Nutrient (inorganic and organic) discharges from rivers and other land-based sources.
- Satellite surface observations (Chlorophyll a concentrations, transparency, temperature, salinity)
- In situ observations (nutrients, dissolved oxygen and chlorophyll concentrations in the water column).
- Ecosystem characteristics (phytoplankton floristic composition, seaweeds and seagrass, zooplankton including jellyfish and other gelatinous species).
- Appearance of mucilaginous materials, marine snow and other phenomena affecting the oxygen balance.
Activity 2: to build and analyze data base, produce challenge outputs for GIS use
Activity 3: to deliver checkpoint information, and report assessment in results in the Literature Survey and Data Adequacy Reports.
- National Institute for Marine Research and Development “Grigore Antipa”, NIMRD, Romania (Leader)
- Euro-Mediterranean Center for Climate Change, CMCC, Italy
- Institute of Оceanology, Bulgarian Academy of Sciences, IO-BAS, Bulgaria
- University of Plymouth, UPL, United Kingdom
- P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, SIO-RAS, Russia
- Which input information is looked for, discoverable ?
The Challenge will collate data regarding Black Sea’s waters from available data bases. The target parameters and biological information are:
- nutrients concentrations (mainly P and N) and ratio
- chlorophyll concentrations
- dissolved oxygen concentrations (mainly bottom)
- phytoplankton abundance and biomass
Several datasets are available for the Black Sea. Synthetically they are :
- Black Sea Ecosystem Processes And Forecasting / Operational Database Management System Project acronym ODBMS Black Sea
- PERSEUS Oceanographic Mediterranean and Black Sea Data Management
- EMODnet Chemistry
- NASA Ocean Biogeochemical Model
- The Water Information System for Europe (WISE) database
- MyOcean ocean colour Thematic Assembly Center;
- Black Sea Informational system (BSIS).
- Are data sets accessible ?
The Challenge will provide information on the data availability in a standardized way plus terms of access and use.
Data sets are available from different sources :
- Information retrieved upon specific request to the data source;
- Use of open search engines, searching by name either the data provider or the characteristics;
- Search via reference catalogue (e.g. MyOcean, Emodnet, Giovanni NASA, JRC etc.)
- We do not know the level of access of BSIS (Black Sea Informational System) data regarding the monitoring data from Black Sea’s riparian countries. On the BSC website they are not available.
- How appropriate for use are the data ?
The Challenge will provide information on the data appropriateness in standardized way plus descriptive text of strengths and weakness regarding the appropriateness of upstream data used. It will include a rationale for non selection of unused input data.
The Eutrophication challenge aims to produce seasonal averages and changes of eutrophication in the basin:
- Seasonal averages of eutrophication for past ten years
- Change in eutrophication over past ten years (i.e. where eutrophication has reduced and where it has increased)