14 The mission of the JRC is to provide customer-driven scientific and technical support for the conception, development, implementation and monitoring of EU policies. As JRC Scientific and Technical Reports a service of the European Commission, the JRC functions as a reference centre of science and technology for the Union. Close to the policy-making process, it serves the common interest of the Member States, while being independent of special interests, whether private or national. LB-NB-23838-EN-C Water Framework Directive intercalibration technical report Part 2: Lakes Edited by Sandra Poikane EUR 23838 EN/2 - 2009 JRC Scientific and Technical Reports Water Framework Directive intercalibration technical report Part 2: Lakes Edited by Sandra Poikane EUR 23838 EN/2 - 2009 The mission of the Institute for Environment and Sustainability is to provide scientific- technical support to the European Union’s Policies for the protection and sustainable development of the European and global environment. European Commission Joint Research Centre Institute for Environment and Sustainability TP 270, 21020 Ispra, Italy Contact information E-mail: [email protected] Tel.: +39 0332 789720 Fax: +39 032 789352 http://ies.jrc.ec.europa.eu/ http://www.jrc.ec.europa.eu/ Legal Notice Neither the European Commission nor any person acting on behalf of the Commission is responsible for the use which might be made of this publication. Europe Direct is a service to help you find answers to your questions about the European Union Freephone number (*): 00 800 6 7 8 9 10 11 (*) Certain mobile telephone operators do not allow access to 00 800 numbers or these calls may be billed. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server http://europa.eu/ EUR 23838 EN/2 ISBN 978-92-79-12791-5 ISSN 1018-5593 DOI 10.2788/23415 Luxembourg: Office for Official Publications of the European Communities © European Communities, 2009 Reproduction is authorised provided the source is acknowledged Printed in Italy 2 Contents Section 1 – Introduction...................................................................................................... 7 1. Preface ............................................................................................................................... 7 2. Background ............................................................................................................................ 7 3. Common Intercalibration Types .......................................................................................... 10 Section 2 – Phytoplankton biomass metrics ............................................................. 13 1 Introduction ........................................................................................................................... 13 2 Methodology and results ....................................................................................................... 13 2.1 Alpine GIG ....................................................................................................................... 15 2.1.1 Alpine Lake types .................................................................................................. 15 2.1.2 Intercalibration approach and data ...................................................................... 16 2.1.3 National methods that were intercalibrated.......................................................... 17 2.1.4 Reference conditions ............................................................................................. 17 2.1.5 Boundary setting ................................................................................................... 21 2.1.6 Ranges for reference values and boundaries of biovolume/chlorophyll-a ............ 23 2.1.7 Final outcome of the Intercalibration ................................................................... 25 2.1.8 National types vs. Common Intercalibration types ............................................... 26 2.1.9 Open issues and need for further work ................................................................. 28 2.2 Atlantic GIG ..................................................................................................................... 29 2.2.1 Atlantic GIG lake types ......................................................................................... 29 2.2.2 Intercalibration approach ..................................................................................... 29 2.2.3 National methods that were intercalibrated.......................................................... 30 2.2.4 Reference conditions ............................................................................................. 31 2.2.5 Boundary setting ................................................................................................... 33 2.2.6 Final outcome of the Intercalibration ................................................................... 33 2.2.7 National types vs. Common Intercalibration types ............................................... 33 2.2.8 Open issues and way forward ............................................................................... 36 2.3 Central/Baltic GIG ........................................................................................................... 37 2.3.1 Central/Baltic Lake types ...................................................................................... 37 2.3.2 Intercalibration approach ..................................................................................... 37 2.3.3 National methods that were intercalibrated.......................................................... 38 2.3.4 Setting of Reference conditions ............................................................................. 39 2.3.5 Boundary setting ................................................................................................... 41 2.3.6 Final outcome of the Intercalibration ................................................................... 46 2.3.7 National types vs. Common Intercalibration types ............................................... 47 2.3.8 Open issues and need for further work ................................................................. 48 2.4 Mediterranean GIG .......................................................................................................... 49 2.4.1 Mediterranean Lake Types .................................................................................... 49 3 2.4.2 Intercalibration approach ..................................................................................... 50 2.4.3 National methods that were intercalibrated.......................................................... 51 2.4.4 Reference conditions ............................................................................................. 51 2.4.5 Boundary setting ................................................................................................... 53 2.4.6 Final outcome of the Intercalibration ................................................................... 56 2.4.7 National types vs. Common Intercalibration types ............................................... 56 2.4.8 Open issues and need for further work ................................................................. 57 2.5 Northern GIG ................................................................................................................... 57 2.5.1 Northern Lake types .............................................................................................. 57 2.5.2 Intercalibration approach ..................................................................................... 58 2.5.3 National methods that were intercalibrated.......................................................... 59 2.5.4 Reference conditions and the H/G boundary ........................................................ 60 2.5.5 Boundary setting ................................................................................................... 61 2.5.6 Final outcome of the Intercalibration ................................................................... 62 2.5.7 National types vs. Common Intercalibration types ............................................... 64 2.5.8 Open issues and need for further work ................................................................. 66 3 Conclusions............................................................................................................................. 67 3.1 Final outcome of Lake Intercalibration ............................................................................ 67 3.2 Open issues and way forward ........................................................................................... 72 4 References ............................................................................................................................... 73 5 Annexes ................................................................................................................................... 81 Section 3 - Phytoplankton composition metrics ...................................................... 83 1 Introduction ........................................................................................................................... 83 2 Methodology and results ....................................................................................................... 83 2.1 Alpine GIG ......................................................................................................................
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