1 / 21

Milestone 6 Report

This report provides an overview of the types, countries, and BQE of the Baltic Sea's coastal waters. It discusses various indicators such as salinity, phytoplankton, macroalgae, and benthic fauna. It also describes the intercalibration approaches and future work planned for each indicator.

ltravis
Download Presentation

Milestone 6 Report

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Milestone 6 Report Coast Baltic Sea GIG Presented by Henning Karup GIG co-ordinator

  2. Overview of types, countries and BQE Type CW B0 - Finland and Sweden Salinity 0.5-3, sheltered, shallow, >150 ice days Phytoplankton: Chlorophyll a Macroalgae: Depth limit Fucus Benthic Fauna: National indices Type CW B - Finland and Sweden Salinity 3-6, sheltered, shallow, >150 ice days Phytoplankton: Chlorophyll a Macroalgae: Depth limit Fucus Benthic Fauna: National indices Type CW B3 – Finland and Sweden Salinity 3-6, sheltered, shallow, 90-150 ice days Phytoplankton: Chlorophyll a Macroalgae: Depth limit Fucus Benthic Fauna: National indices 8 countries and 6 types Pressure: eutrophication Type CW B12 – Germany, Sweden, Denmark and Estonia Salinity 6-22, sheltered, shallow Phytoplankton: Chlorophyll a Angiosperms: Eelgrass depth limit (DK + DE) Benthic Fauna: National indices Type CW B13 – Denmark, Estonia, Latvia, Lithuania and Poland Salinity 6-22, exposed, shallow Phytoplankton: Chlorophyll a Benthic Fauna: National indices CW B14 – Denmark and Poland Salinity 6-22, sheltered, shallow lagoons Phytoplankton: Chlorophyll a

  3. Intercalibration approachPhytoplankton a) Hybrid between option 2 and 3 (Denmark, Finland, Germany and Sweden) A common metric – summer mean of chlorophyll a from May/June to September. Intercalibration was performed by comparison of the results from the national assessment. b) Option Hybrid between option 1 and 2 (to be further developed)(All Baltic member states) A data set (summer mean of chlorophyll a from May/June to September) from most member states participating in the Baltic GIG has been compiled and an overall relation between chl. a and TN established.

  4. Intercalibration approachBenthic fauna Benthic fauna: Option 3 (Denmark, Finland, Germany and Sweden) Intercalibration was performed in three steps: • comparison of species sensitivity classifications • comparison of indices • comparison of classification of water bodies based on national methods for assessment

  5. Intercalibration approachMacro algae Macroalgae: Option 3. Bilaterally between Finland and Sweden Reference levels for the benthic vegetation indicator have been set using: • historical data, • old literature • best available expert judgement The class borders are based on expert judgement.

  6. Intercalibration approachAngiosperms Angiosperms: Hybrid between option 2 and 3. Bilaterally between Denmark and Germany Reference levels are based on historical data, expert judgment and modeling. Two approaches have been used for classification: 1) percent deviation (3 scenarios) 2) modeling - dose-response relationships between physico-chemical variables (nutrient concentration, transparency) and vegetation metrics. Denmark used the maximum depth of 5 % eelgrass cover to define the depth limit. Germany used historical records of depth limit to define reference and light modeling to define depth limits.

  7. National classification methodsPhytoplankton - chlorophyl a

  8. National classification methodsBenthic fauna

  9. National classification methodsMacro algae

  10. National classification methodsAngiosperms

  11. BoundariesChlorophyll a, g/l

  12. BoundariesBenthic Fauna

  13. BoundariesMacroalgae - Fucus depth limit, m.

  14. BoundariesAngiosperms - Eelgrass depth limit, m.

  15. Transformation of boundaries to national typology

  16. Future work planned Benthic fauna Sweden and Finland: Comparison of Swedish and Finnish indices in areas similar to intercalibration types B0, B2 and B3. Will be done during summer 2006. Phytoplankton Denmark (assessment tool for the whole Baltic Sea): Further work on establishing type and site specific chl. a-TN relationships and ranges of nutrient concentrations related to the different ecological classes. Expected to be done in 2007 if funding can be made available.

  17. Main problems, gaps and difficulties

  18. Main problems, gaps and difficulties • Difficult to compare EQR values. • Differences in boundary setting due to different interpretation of type definition Thank you for your attention

More Related