David Gregory is a Research Professor at The National Museum of Denmark · Department of Conservation and Natural Science.Henning Matthiesen is Senior Researcher at The national Museum of Denmark.

• Editorial 1. The 4th International Conference on Preserving Archaeological Remains in Situ (PARIS4): 23–26 May 2011, the National Museum of Denmark, Copenhagen Articles 2. Theme 1: Degradation of Archaeological Remains (Chaired by Jim Williams and Mark Pollard) Laboratory Experiments as Support for Development of in Situ Conservation Methods 3. An Analytical Methodology for the Study of the Corrosion of Ferrous Archaeological Remains in Soils 4. Some Aspects of the Bioerosion of Stone Artefact Found Underwater: Significant Case Studies 5. Reburial and Analyses of Archaeological Remains in the Marine Environment — Investigations into the Effects on Metals 6. Erosion and Archaeological Heritage Protection in Lake Constance and Lake Zurich: The Interreg IV Project ‘Erosion und Denkmalschutz am Bodensee und Zürichsee’ 7. Deep Impact: What Happens When Archaeological Sites are Built on? 8. Research on Conservation State and Preservation Conditions in Unsaturated Archaeological Deposits in Oslo 9. Organic Loss in Drained Wetland Monuments: Managing the Carbon Footprint 10. Changes in the Physico-Chemical and Microbial Nature of Wetlands from the Leaching of Chromated Copper Arsenate (CCA)-Treated Wood 11. Theme 2: Monitoring and Mitigation Case Studies (Chaired by Jane Sidell and Hans Huisman) in Situ Preservation of Wetland Heritage: Hydrological and Chemical Change in the Burial Environment of the Somerset Levels, UK 12. Lowland Floodplain Responses to Extreme Flood Events: Long-Term Studies and Short-Term Microbial Community Response to Water Environment Impacts 13. Preservation Status and Priorities for in Situ Monitoring of the Weapon Sacrifice in Illerup Ådal, Denmark 14. The Future Preservation of a Permanently Frozen Kitchen Midden in Western Greenland 15. In Situ Preservation and Monitoring of the James Matthews Shipwreck Site 16. Samuel Pepys’s Navy Preserved in Situ? 17. The ISCR Project ‘Restoring Underwater’: An Evaluation of the Results after Ten Years 18. S

David Gregory is a Research Professor at The National Museum of Denmark · Department of Conservation and Natural Science.Henning Matthiesen is Senior Researcher at The national Museum of Denmark.

• Editorial 1. The 4th International Conference on Preserving Archaeological Remains in Situ (PARIS4): 23–26 May 2011, the National Museum of Denmark, Copenhagen Articles 2. Theme 1: Degradation of Archaeological Remains (Chaired by Jim Williams and Mark Pollard) Laboratory Experiments as Support for Development of in Situ Conservation Methods 3. An Analytical Methodology for the Study of the Corrosion of Ferrous Archaeological Remains in Soils 4. Some Aspects of the Bioerosion of Stone Artefact Found Underwater: Significant Case Studies 5. Reburial and Analyses of Archaeological Remains in the Marine Environment — Investigations into the Effects on Metals 6. Erosion and Archaeological Heritage Protection in Lake Constance and Lake Zurich: The Interreg IV Project ‘Erosion und Denkmalschutz am Bodensee und Zürichsee’ 7. Deep Impact: What Happens When Archaeological Sites are Built on? 8. Research on Conservation State and Preservation Conditions in Unsaturated Archaeological Deposits in Oslo 9. Organic Loss in Drained Wetland Monuments: Managing the Carbon Footprint 10. Changes in the Physico-Chemical and Microbial Nature of Wetlands from the Leaching of Chromated Copper Arsenate (CCA)-Treated Wood 11. Theme 2: Monitoring and Mitigation Case Studies (Chaired by Jane Sidell and Hans Huisman) in Situ Preservation of Wetland Heritage: Hydrological and Chemical Change in the Burial Environment of the Somerset Levels, UK 12. Lowland Floodplain Responses to Extreme Flood Events: Long-Term Studies and Short-Term Microbial Community Response to Water Environment Impacts 13. Preservation Status and Priorities for in Situ Monitoring of the Weapon Sacrifice in Illerup Ådal, Denmark 14. The Future Preservation of a Permanently Frozen Kitchen Midden in Western Greenland 15. In Situ Preservation and Monitoring of the James Matthews Shipwreck Site 16. Samuel Pepys’s Navy Preserved in Situ? 17. The ISCR Project ‘Restoring Underwater’: An Evaluation of the Results after Ten Years 18. S