Additional files Additional file 1: Defining the terminology Table I. a The four main categories of spatial management measures (SMMs) taken into account and the related interventions used in composing the search strings. Note that on consideration of protection regimes some intervention types may be placed in multiple categories however individual studies will only be placed in one category. Indicative Description/Characteristiques SMMs Interventions Marine Reserves MRs Marine Protected Areas MPAs Partial Permanent Protection* PPP Highly protected areas set aside to protect biodiversity by conserving intact ecosystems, preventing all destructive and extractive activities. Areas characterised by a large and complete set of species of high ecological value and present in significant density. Such protected areas can represent suitable baseline for biodiversity studies providing indispensable reference areas of pristine environmental condition for scientific research and monitoring. Marine reserves may comprise a whole no-take zone or frequently be a separate zone within a multiple-use MPA (e.g. a "core" area usually surrounded by other suitably protected areas). Any removal and modification and extraction or collection of marine resources (e.g. fishing, harvesting, dredging, mining or drilling) is not allowed in these areas, with exception of scientific research. Human visitation is limited. Less strictly protected than marine reserves, set aside to protect, manage and preserve the natural condition. Usually larger than no-take zones, sometimes of sufficient size to allow species to communicate and move (corridor, migration routes, connectivity conservation corridors). Opened to limited people mainly for visitation, promotion of educative recreational activities and nature tourism (e.g. fixed mooring points to manage density and limit seabed impacts whilst providing access) although some extractive activities may be allowed. Regular, continuous, active localised management interventions to maintain and protect specific critically endangered flora and fauna species, population (of international, national or local importance). Protect rare or threatened habitats (including fragments of habitats) or parts of ecosystems. Often have the role of plugging the gap in conservation strategies, acting to provide more flexible management strategies and options to protect fragments of ecosystem or habitats. These “static” spatial measures of management require continuous and flexible management interventions and enforcement to maintain and protect specific species, habitat or part of ecosystems (e.g. special areas of conservation, No-take zone No-take area Marine reserve Closed area special zone protection national park special areas protection marine sanctuary marine protected area Sites of Community Importance Site of Special Scientific Interest Special Areas of Conservation Fisheries zones exclusion buffer zone 1 buffer zones between more strictly protected areas, fisheries exclusive zones where only some fisheries are allowed). Provide a management approach in areas that have already undergone substantial modifications, necessitating protection of remaining fragments. Human activities are regulates. Partial Temporal Protection* PTP Time-limited spatial closure measures aimed at particular species or groups and activities, where other human activities are not curtailed (conservation boxes to restrict the fishing activities during the spawning period of fish stocks, nursery area). Temporal protection regimes are applied to protect species at specific and predictable vulnerable periods of the year. These most “dynamic” measures of spatial management often take place in areas that have already undergone substantial modifications, rely on continuing monitoring to maintain their quality. Broad scale conservation in heavily used marine areas, socio-economic human activity are allowed, sustainable use is promoted. Marine Conservation Zone nursery area restricted area conservation boxes *Partial Protection measures: Represent protection regimes aimed at particular vulnerable population or species or threatened habitats (including fragment of habitat), often with active management intervention (e.g. protection of key benthic habitats from trawling or dredging, breeding areas, spawning areas, feeding/foraging areas, nursery areas). Partial protection measures can be sub-grouped in both permanent and temporal measures. 2