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Table 13 Summary of the meta-analysis results

From: What are the effects of even-aged and uneven-aged forest management on boreal forest biodiversity in Fennoscandia and European Russia? A systematic review

Exposure Comparator Overall effect Forest dependent species Open habitat species Taxa Years since harvesting Deadwood
Species richness
 Uneven-aged forest Young even-aged forest   ++    
Retention      na
Mature even-aged forest ++     * na
 Young even-aged forest Retention   na na    na
Mature even-aged forest   ++  ** **  
 Uneven-aged forest Natural forest     *   na
 Even-aged forest    **  
Abundance
 Uneven-aged forest Young even-aged forest ++ +    *
Retention      na
Mature even-aged forest    + ** ** na
 Young even-aged forest Retention   na na na na  
Mature even-aged forest    **   na
 Uneven-aged forest Natural forest +      na
 Even-aged forest       
  1. Top row shows outcome variable and effect modifiers. Excludes intensity of harvesting, whose influence on overall effect sizes was tested only for uneven-aged forest. Key: ++ significantly more species/individuals in the exposure, – significantly more species/individuals in the comparator, ± marginally significant effect. For taxa, years since harvesting, and deadwood ** denotes significant influence and * marginally significant influence on effect sizes. Empty cells denote no effect and na is used when effect could not be tested for the lack of data