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Table 1 The eligibility criteria for article screening for the study question

From: Are small protected habitat patches within boreal production forests effective in conserving species richness, abundance and community composition? A systematic review

Question elements Eligibility criteria
Populations Included
Boreal forests in Canada, Estonia, Finland, Latvia, Lithuania, Norway, Russia, Sweden, and USA (dominant tree species in the study area must be spruce or pine)
Intervention Included
Conservation of woodland key habitats
Conservation of the small protected forest patches, e.g. voluntarily conserved small areas (METSO and Komet programs) and certification-based protection
Conservation of large protected areas, i.e. national parks, nature reserves, wilderness areas
Comparators Included
Managed forests (production forests of all type, age and succession stage)
Natural forests (including national parks and other large-scale protected areas and, also, non-protected natural forests)
Also, SPHPs in natural and production forests can be compared to each other
Small protected habitat patches different from intervention (for example WKHs and voluntary set-asides are not compared)
Different small protected habitat patches within the intervention (for example stream-side WKHs and herb-rich WKHs not compared)
Managed forest known to have low/high conservation values (for example areas not accepted in METSO program, forest areas receiving environmental subsidy)
Non-forest lands
Urban parks
Wooded fields e.g. Christmas tree plantations
Outcomes Included
Species diversity
Species richness
Species abundance
Volume of deadwood
Diversity of deadwood
All data on non-terrestrial species
Density of ant mounds / predator bird nests
Study design Included
Control-intervention field studies of small habitat patches
Control-intervention studies of small habitat patches where no field study was conducted but the data analysed are originally from a field study
Simulation/modelling studies (even partly simulated/modelled)
Habitat selection studies
Studies first mapping/finding species and afterwards checking whether the place of occurrence was located in SPHP or not
Language Included