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Black Sea GIG Milestone 6 Report: Shallow Waters Study

Learn about the Black Sea GIG shallow waters study in Romania and Bulgaria, covering biological and chemical parameters. Explore data on phytoplankton, bentic invertebrates, and more, including intercalibration exercises and upcoming activities.

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Black Sea GIG Milestone 6 Report: Shallow Waters Study

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  1. Milestone 6 Report Black Sea GIG

  2. Background information Common type: shallow waters, mixed substratum, mesohaline. Countries involved: Romania and Bulgaria. Biological quality elements: • Romania: Phytoplankton – total density, total biomass, ratio between species - dynophlagelatae/diatomeae; Bentic Invertebrates – Species composition, total biomass. • Bulgaria: Phytoplankton – chl.”a”, total density, total biomass, ratio between species - dynophlagelatae/diatomeae; Bentic Invertebrates – Species composition, total biomass. Chemical parameters: temperature, salinity, O2, oxygen saturability, BOD5, P-PO4, Ptotal, N-NH4, N-NO3, N-NO2, Ntotal.

  3. IC approach • Option 1 – Phytoplankton - Macrozoobentos

  4. Data • New data has been collected from all sites during 2005. • Phytoplankton - total density, total biomass, ratio between species - dynophlagelatae/diatomeae; • Bentic Invertebrates – Species composition, total biomass. BSP not applied yet. Common data is under study.

  5. National classification methods

  6. Setting of Reference conditions • The reference conditions were preliminary set, at national level, based on historical data and expert judgement. Bulgaria: • Phytoplankton: chl ”a”, total biomass, number of species, no. of phytoplankton blooms/year, diversity index H’ – Shannon; • Macrozoobentos: diversity index H’ – Shannon; • Macrofites: relative coverage of marine macrofites; Romania: • Phytoplankton: total density, total biomass, ratio between species; • Macrozoobentos: diversity index H’ – Shannon, total density;

  7. Reference conditions Bulgaria

  8. Reference conditions Romania

  9. Boundaries • EQR’s at national level: Bulgaria: Phytoplankton - Diversity index H' - Shannon Biomass Number of species No. of phytoplankton blooms/year Chl. “a” concentration Macrozoobentos - Diversity index H' - Shannon

  10. Boundaries • EQR’s at national level: Romania: Phytoplankton – no. of species; - no. of phytoplankton blooms/year; Macrozoobentos - Diversity index H' – Shannon; - total density;

  11. Workplan • Future samplings: 03 – 07.07.2006 • Future meetings: late September or October 2006 • Future activities: Bulgaria on-going project

  12. What can be achieved • October 2006 Comparison of the methods of sampling and analyzing of data between Bulgaria and Romania. • June 2007 Upgrade of established reference conditions. Intercalibration of the methods for assessment of the data. Finalization of the Intercalibration exercise.

  13. Problems • Although both countries are using the same methods, there are some differences regarding the analyzing equipment; • Financial problems – delay in sampling and difficulties in participating at meetings – delay in observation of the existing differences;

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