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Table 2 Description of the PECO/PICO items of the primary question

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

Population All insect species and communities of the temperate climatic zonea
Exposure LTI verges (road, railway, power line and pipeline verges and waterway banks)
Intervention Management practices or human-induced disturbances of LTI verges
Comparator Both temporal and spatial comparators, including but not restricted to:   Temporal comparators       Ecosystem present before infrastructure construction       Verge before management intervention    Spatial comparators       Nearby habitats away from LTIs       Unmanaged verges or verges managed with a different practice
Outcome All outcomes relating to corridor or habitat assessment, including but not restricted to, species dispersal, species richness, abundance and community composition
  1. aThe Köppen–Geiger Climate Classification was used to identify articles with a study zone in the temperate climate. As the funders of the study are interested in western Europe, the Cfa, Cfb, Cfc, Csa, Csb and Csc temperate zones were included in the scope of our study. See http://people.eng.unimelb.edu.au/mpeel/koppen.html (accessed 17 November 2015) for the GoogleEarth layers of the Köppen–Geiger Climate Classification