| | REPORT OF THE WORKING GROUP ON THE EFFECTS OF EXTRACTION |
| | 0,31 | | MB | OF MARINE SEDIMENTS ON THE MARINE ECOSYSTEM |
| | 58 | | stron |
| | 3619 | | ID | International Council for the Explorations of the Sea |
| | 2002 | | rok |
| | TABLE OF CONTENTS |
| | Section Page |
| | 1. INTRODUCTION 5 |
| | 2. TERMS OF REFERENCE 5 |
| | 2.1 Justification 6 |
| | 3. REVIEW OF NATIONAL MARINE AGGREGATE EXTRACTION ACTIVITIES 6 |
| | 3.1 Belgium.6 |
| | 3.2 Canada.6 |
| | 3.3 Denmark .7 |
| | 3.4 France8 |
| | 3.5 Finland 8 |
| | 3.6 Germany .8 |
| | 3.6.1 North Sea 8 |
| | 3.6.2 Baltic Sea8 |
| | 3.7 Ireland .8 |
| | 3.8 The Netherlands 8 |
| | 3.8.1 Sand Extraction 1998 8 |
| | 3.8.2 Gravel Extraction 1998 .9 |
| | 3.8.3 Shell Extraction 1998 9 |
| | 3.9 Norway9 |
| | 3.10 Poland9 |
| | 3.10.1 Gravel Extraction . 10 |
| | 3.10.2 Sand Extraction 10 |
| | 3.11 Sweden 10 |
| | 3.12 United Kingdom 10 |
| | 3.12.1 Current Licence Position UK – Summary . 12 |
| | 3.13 United States of America 12 |
| | 4. REVIEW OF NATIONAL SEABED RESOURCE MAPPING PROGRAMMES .12 |
| | 4.1 Belgium. 12 |
| | 4.2 Canada. 12 |
| | 4.3 Denmark . 13 |
| | 4.4 France 14 |
| | 4.4.1 IFREMER. 14 |
| | 4.4.2 BRGM . 14 |
| | 4.4.3 SHOM . 15 |
| | 4.5 Germany . 15 |
| | 4.6 The Netherlands 15 |
| | 4.6.1 1:250,000 Geological Reconnaissance Map Series 15 |
| | 4.6.2 1:100,000 Geology and Resource Map Series 15 |
| | 4.6.3 Applied and other Geological Investigations in 1998/9 16 |
| | 4.6.4 Geochemical Investigations. 16 |
| | 4.6.5 Reports 16 |
| | 4.7 Norway 16 |
| | 4.8 Poland 16 |
| | 4.9.1 Reports 17 |
| | 4.10 United Kingdom 18 |
| | 4.10.1 Report 18 |
| | 5. REVIEW OF DEVELOPMENTS IN NATIONAL AUTHORISATION AND ADMINISTRATIVE |
| | FRAMEWORK AND PROCEDURES 18 |
| | 5.1 Belgium. 18 |
| | 5.1.1 Changing of Extraction Zones . 18 |
| | 5.1.2 Black-Boxes 19 |
| | 5.1.3 Workshop. 19 |
| | 5.2 Canada. 19 |
| | 5.3 Denmark . 19 |
| | 5.4 France 20 |
| | 5.5 Germany . 21 |
| | 5.6 The Netherlands 21 |
| | 5.7 United Kingdom 22 |
| | 5.7.1 Regulation under the Government View Procedure 22 |
| | 5.7.2 Management by the Crown Estate 23 |
| | 5.7.2.1 GIS 23 |
| | 5.7.2.2 Electronic Monitoring system (EMS). 23 |
| | 6. REVIEW OF APPROACHES TO ENVIRONMENTAL IMPACT ASSESSMENT AND RELATED |
| | ENVIRONMENTAL RESEARCH23 |
| | 6.1 Canada. 23 |
| | 6.2 Denmark . 25 |
| | 6.2.1 Øresund Link 25 |
| | 6.2.3 The Harbour of Århus . 25 |
| | 6.2.4 Eastern Kattegat . 25 |
| | 6.2.5 Research Projects . 26 |
| | 6.2.6 Measurements of Spill from Dredgers on Kriegers Flak. 26 |
| | 6.3 France 27 |
| | 6.4 Germany . 27 |
| | 6.4.1 North Sea 28 |
| | 6.4.2 Baltic Sea 28 |
| | 6.4.3 Literature review 29 |
| | 6.4.4 Other studies . 29 |
| | 6.5 The Netherlands 29 |
| | 6.5.1 Borrow Pits (Punaise Project) 29 |
| | 6.5.2 Riacon Project 29 |
| | 6.5.3 Large Scale Projects 30 |
| | 6.6 United Kingdom 30 |
| | 6.6.1 Regional Seabed Sediment Studies. 30 |
| | 6.6.2 Seabed Sediment Mobility Study - West of the Isle of Wight. 31 |
| | 6.6.3 Inshore Seabed Characterisation of 31 |
| | 6.6.4 Bristol Channel Marine Aggregates Resources and Constraints . 31 |
| | 7. THE EFFECTS OF EXTRACTION OF MARINE SAND AND GRAVEL ON THE BALTIC |
| | ECOSYSTEM32 |
| | 8. SEABED CHARACTERISATION AND BIOTOPE MAPPING32 |
| | 8.1 Remote Sensing Techniques 32 |
| | 8.1.1 Side-Scan Sonar . 33 |
| | 8.1.2 Multibeam Swath Bathymetry . 33 |
| | 8.1.3 Sub-Bottom Profilers . 34 |
| | 8.2 Summary and Conclusions. 34 |
| | 8.3 Geophysical Attributes of Importance when Biotope Mapping Marine Aggregate Deposits 35 |
| | 8.4 References 36 |
| | 9. THE EFFECTS OF INCREASED SUSPENDED SOLIDS CAUSED BY DREDGING.37 |
| | 9.1 Impact of Dredger Plumes on Race Bank (UK, North Sea) . 37 |
| | 9.2 Development of Models to Predict Sediment Dispersion from Dredgers 37 |
| | 9.3 Aggregate Dredger Plume Production and Dispersion Study 38 |
| | 9.4 Project to Review Research on Sediment Plumes Arising from Marine and Coastal Dredging 38 |
| | |
| | 9.5 Recommendations for Further Research 39 |
| | 9.6 References 39 |
| | 10. THE EFFECTS OF MARINE AGGREGATE EXTRACTION ON HIGHER TROPHIC LEVELS, IN |
| | PARTICULAR, FISHES AND FISHERIES39 |
| | 10.1 Consideration of Effects in terms of the Biodiversity of Marine Fishes 40 |
| | 10.2 Cumulative Environmental Impacts of Aggregate Extraction . 42 |
| | 11. WGEXT CONTRIBUTION TO THE ICES MARINE HABITAT COMMITTEE STRATEGIC |
| | PLANNING PROCESS43 |
| | 11.1 Objective 5 . 45 |
| | 11.2 Objective 1 . 45 |
| | 11.3 Objective 2 . 45 |
| | 11.4 Products 46 |
| | 11.5 Resources 46 |
| | 12. RECOMMENDATIONS AND DRAFT TERMS OF REFERENCE46 |
| | 13. CLOSE OF MEETING48 |
| | ANNEX I LIST OF WGEXT REPORTS |
| | ANNEX II AGENDA AND TERMS OF REFERENCE |
| | ANNEX III LIST OF CONTRIBUTORS |
| | ANNEX IV HELSINKI COMMISSION BALTIC REPORT |
| | ANNEX V SUPPLEMENTARY MATERIAL |