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Table 8 Candidate moderators by category

From: Can linear transportation infrastructure verges constitute a habitat and/or a corridor for insects in temperate landscapes? A systematic review

CategoryVariableDescription
(1) LTILTI typeLTI category: railway, pipeline, power line, waterway, highway, other roads
(2) Habitat contrastHabitat contrastContrast between vegetation type of LTI verges and habitats away from LTI. Coded as low, medium, high
(3) InsectTrophic levelFeeding guild of group and individual species: primary consumer, pollinator, secondary consumer, omnivore
Habitat specializationHabitat preference of individual species: generalist, specialist of open habitats, specialist of forest habitats
Conservation statusCategory for individual species: species of conservation value, pest/invasive species, other species
(4) Study designType of literature
Replication
Grey versus non-grey literature
True spatial replication versus other cases
Sample locationTransparent and systematic procedure for the selection of sample plots location selection (randomization, fixed distances, grids) versus other cases
Study durationNumber of sampling years: single year versus more than 1 year