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Table 9 Sample sizes (nb of study cases) for both abundance and species richness by LTI, trophic guild and habitat specialization

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

  Abundance Species richness
Pipeline/power line Railway Highway Non highway road Waterway Pipeline/power line Railway Highway Non highway road Waterway
All 176 76 317 65 27 3 4 15 19 7
Primary consumer 4 0 81 22 17 0 0 1 13 2
 Generalist    2        
 Open    20        
 Forest           
 NA 4   59 22 17    1 13 2
Pollinator 163 76 102 7 3 2 4 2 0 2
 Generalist 41 42 34 5       
 Open 3 18 18        
 Forest   2 3        
 NA 119 14 47 2 3 2 4 2   2
Omnivore 2 0 41 1 0 0 0 0 0 0
 Generalist    9 1       
 Open 1   3        
 Forest 1          
 NA    29        
Secondary consumer 3 0 80 0 1 1 0 9 0 0
 Generalist    11      2   
 Open    27      3   
 Forest    2      2   
 NA 3   40   1 1   2   
Trophic level NA 4 0 13 35 6 0 0 3 6 3
 Generalist 1          
 Open    4        
 Forest           
 NA 3   9 35 6    3 6 3
  1. NA non available data