South of the Isles of Scilly rMCZ Post-survey Site Report Contract Reference: MB0120 Report Number: 47 Version 3 February 2016 Project Title: Marine Protected Areas Data and Evidence Co-ordination Programme Report No 47. Title: South of the Isles of Scilly rMCZ Post-survey Site Report Defra Project Code: MB0120 Defra Contract Manager: Carole Kelly Funded by: Department for Environment, Food and Rural Affairs (Defra) Marine Science and Evidence Unit Marine Directorate Nobel House 17 Smith Square London SW1P 3JR Authorship Louise Brown Centre for Environment, Fisheries and Aquaculture Science (Cefas) [email protected] Stefan Bolam Centre for Environment, Fisheries and Aquaculture Science (Cefas) [email protected] Acknowledgements We thank Christopher Barrio and Peter Mitchel (Cefas) for reviewing earlier drafts of this report. Disclaimer: The content of this report does not necessarily reflect the views of Defra, nor is Defra liable for the accuracy of information provided, or responsible for any use of the reports content. Although the data provided in this report have been quality assured, the final products - e.g. habitat maps – may be subject to revision following any further data provision or once they have been used in SNCB advice or assessments. Cefas Document Control Title: South of the Isles of Scilly rMCZ Post-survey Site Report Submitted to: Marine Protected Areas Survey Co-ordination & Evidence Delivery Group Date submitted: February 2016 Project Manager: Sue Ware Report compiled by: Louise Brown, Stefan Bolam Quality control by: Christopher Barrio Frojan Approved by & date: Keith Weston (25/02/2016) Version: V3 Version Control History Author Date Comment Version Louise Brown, 10/08/2015 First draft submitted for review 1 Stefan Bolam Louise Brown, 21/10/2015 Revised following 1st round review 2 Stefan Bolam Chris Barrio Frojan 25/02/2016 Revised following Defra comments 3 Table of Contents Table of Contents ........................................................................................................ i List of Tables .............................................................................................................. iii List of Figures ............................................................................................................. iv 1 Executive Summary: Report Card ................................................................. 1 1.1 Features proposed in the SAD for inclusion within the MCZ designation ...... 1 1.2 Features observed but not proposed in the SAD for inclusion within the rMCZ designation .......................................................................................... 2 1.3 Evidence of human activities occurring within the rMCZ ............................... 2 2 Introduction ................................................................................................... 3 2.1 Location of the rMCZ ..................................................................................... 3 2.2 Rationale for site position and designation .................................................... 4 2.3 Rationale for prioritising this rMCZ for additional evidence collection ........... 5 2.4 Survey aims and objectives .......................................................................... 5 3 Methods ........................................................................................................ 7 3.1 Acoustic data acquisition ............................................................................... 7 3.2 Ground truth sample acquisition .................................................................... 7 3.3 Production of the updated habitat map ......................................................... 9 3.4 Quality of the updated map ......................................................................... 11 4 Results ........................................................................................................ 12 4.1 SAD habitat map ......................................................................................... 12 4.2 Updated habitat map based on new survey data ........................................ 12 4.3 Quality of the updated habitat map ............................................................. 14 4.4 Broadscale habitats identified ..................................................................... 14 4.5 Habitat FOCI identified ................................................................................ 15 4.6 Species FOCI identified .............................................................................. 15 4.7 Quality Assurance and Quality Control ....................................................... 16 4.8 Data limitations and adequacy of the updated habitat map ......................... 17 4.9 Observations of human activity on the seabed............................................ 17 5 Conclusions ................................................................................................ 18 5.1 Presence and distribution of broadscale habitats ........................................ 18 5.2 Presence and distribution of habitat FOCI .................................................. 18 5.3 Presence and distribution of species FOCI ................................................. 18 5.4 Evidence of human activities impacting the seabed .................................... 19 References ............................................................................................................... 20 Data sources ............................................................................................................ 22 South of the Isles of Scilly rMCZ Post-survey Site Report i Annexes ................................................................................................................... 23 Annex 1. Broadscale habitat features listed in the ENG. ..................................... 23 Annex 2. Habitat FOCI listed in the ENG. ............................................................ 24 Annex 3. Low or limited mobility species FOCI listed in the ENG. ....................... 25 Annex 4. Highly mobile species FOCI listed in the ENG. ..................................... 25 Annex 5. Video and stills processing protocol. .................................................... 27 Appendices .............................................................................................................. 29 Appendix 1. Survey metadata (CEND0613) ........................................................ 29 Appendix 2. Outputs from acoustic surveys ......................................................... 31 Appendix 3. Evidence of human activities within the rMCZ ................................. 33 Appendix 4. Species list ....................................................................................... 34 Appendix 5. Analyses of sediment samples: classification and composition ...... 44 Appendix 6. BSH/EUNIS Level 3 descriptions derived from video and stills ........ 46 Appendix 7. Example images from survey for broadscale habitats ..................... 48 Appendix 8. Example images from survey for habitat FOCI ................................ 49 South of the Isles of Scilly rMCZ Post-survey Site Report ii List of Tables Table 1. Broadscale habitats for which this rMCZ was proposed for designation. .... 4 Table 2. Habitat FOCI for which this rMCZ was proposed for designation. ............... 5 Table 3. Species FOCI for which this rMCZ was proposed for designation. .............. 5 Table 4. Description of derivatives calculated for bathymetry. .................................. 9 Table 5. Broadscale habitats identified in this rMCZ. .............................................. 15 Table 6. Habitat FOCI identified in this rMCZ. ......................................................... 15 Table 7. Species FOCI identified in this rMCZ. ....................................................... 16 South of the Isles of Scilly rMCZ Post-survey Site Report iii List of Figures Figure 1. Location of the South of the Isles of Scilly rMCZ. Bathymetry is from the Defra Digital Elevation Model (Astrium, 2011). .................................................. 4 Figure 2. Location of ground truth sampling stations in the South of the Isles of Scilly rMCZ. Bathymetry displayed is from Defra’s Digital Elevation Model (Astrium, 2011).................................................................................................................. 8 Figure 3. Habitat map from the Site Assessment Document. .................................. 12 Figure 4. Updated map of broadscale habitats based on newly acquired survey data. ......................................................................................................................... 13 Figure 5. Overall MESH confidence score for updated broadscale habitat map. .... 14 Figure 6. Location of records of species FOCI from newly acquired ground truth data. ................................................................................................................. 16 Corrigendum In July 2015 Defra declared the following amendments to reporting of Features of Conservation Importance (FOCI) in MPAG reports to reflect changes described within Defra MCZ consultation and designation material: • The habitat FOCI ‘Subtidal Sands and Gravels’ is considered to be adequately protected by its component broadscale habitat features, subtidal sand and/or subtidal coarse sediment, and is no longer included within MCZ designations. • The species