Marine Evidence-based Sensitivity Assessment (MarESA) – A Guide

• Main Authors: Tyler-Walters, H, Tillin, HM, Perry, F, Stamp, T, d'Avack, EAS
• Format: Report
• Language: English
• Published: Marine Life Information Network 2018
• Subjects: Biology; Conservation; Ecology and Environment; Marine Sciences; Zoology; North East Atlantic
• Online Access: http://plymsea.ac.uk/id/eprint/7942/; http://plymsea.ac.uk/id/eprint/7942/1/MarESA-Sensitivity-Assessment-Guidance-Rpt-Mar2018v2.pdf; https://www.marlin.ac.uk/assets/pdf/MarESA-Sensitivity-Assessment-Guidance-Rpt-Mar2018v2.pdf

The Marine Evidence-based Sensitivity Assessment (MarESA) methodology was developed by the Marine Life Information Network (MarLIN) team at the Marine Biological Association of the UK. The following guide details the approach, its assumptions, and its application to sensitivity assessment. The guide discusses: • key terms used in sensitivity assessment; • the definitions and terms used in the MarESA approach; • its assumptions; • the definition of resistance, resilience and sensitivity; • the definition of pressures and their benchmarks; • the step by step process by which the possible sensitivity of each feature (habitat, biotope or species) to each pressure is assessed; • the interpretation and application of evidence to sensitivity assessments on a pressure by pressure basis; and • limitations in the application of sensitivity assessments in management. The MarESA methodology provides a systematic process to compile and assess the best available scientific evidence to determine each sensitivity assessment. The evidence used is documented throughout the process to provide an audit trail to explain each sensitivity assessment. Unlike other expert-based approaches, this means that the MarESA assessments can be repeated and updated. The resultant 'evidence base' is the ultimate source of information for the application of the sensitivity assessments to management and planning decisions. The MarESA dataset and MarLIN website represent the largest review of the potential effects of human activities and natural events on the marine and coastal habitats of the North East Atlantic yet undertaken.