Incorporating indirect ecosystem services into marine protected area planning and management.

Marine Protected Areas (MPAs) are recognised as being the mechanism through which marine ecosystem services may be conserved to benefit human well-being. Planning and decision-making can be supported by the quantification and valuation of ecosystem services. To inform the development and management of MPAs a ‘service-orientated’ framework has been developed to use available data to spatially map and explore the pathways between ecosystem services, processes and the ecological functioning of benthic species for indirect ecosystem service provision within a case study area. The framework demonstrates that ecosystem service delivery is functionally interlinked and ecological function cannot be clearly mapped onto individual ecosystem services. The methodology developed here enables decision-makers to understand the links between benthic species, ecological function and indirect ecosystem services. There is currently no measure to quantify how much function is required to maintain human well-being. This lack of a measure, coupled with a large amount of uncertainty surrounding the links between ecosystem function and ecosystem service provision in marine systems, demonstrates that the inclusion of percentage targets for the conservation of broad-scale habitats in MPA planning and management should be considered within a precautionary approach to maintain the delivery of indirect ecosystem services.