Files:

khoper_n_by_biotope.csv - numbers by biotopes dataset
khoper_b_by_biotope.csv - biomass by biotopes dataset
khoper_d_by_biotope.csv - density index by biotopes dataset
khoper_env_by_biotope.csv - environment parameters by biotope dataset
khoper_n_by_lake.csv - numbers by lakes dataset                  
khoper_b_by_lake.csv - biomass by lakes dataset                  
khoper_d_by_lake.csv - density index by lakes dataset            
khoper_env_by_lake.csv - environment parameters by lakes datasetsv
troph.csv - trophic hierarchy 
taxa.csv - taxonomic hierarchy 
code.R - R source code
readme.txt - this file

Trophic groups:

   active filter feeder
  algophage
  hemophage
  swallower
  chewing
   passive filter feeder
  collector
+  collector + grasper
  scraper
+  filter feeder + collector
  grasper
 - detritophage
  - obligate zoophage
 - parasite (endoparasite)
 - zooplanktophage
- - sestono-detritophage
- - sestono-phytodetritophage
  - facultative zoophage
 - phytodetritophage
 - phytophage
 - ectoparasite
a  aphagous
  polyphagous
  non-predatory polyphagous
  predator

Biotopes: 

 =  - littoral zone
 =  - profundal zone
 - water margin

Lakes names:

 =   - Bol'shoe Goloe
 =   - Maloe Goloe
 =  - Ul'yanovskoe 
 =  - Krutoberezhnoe
 =   - Bol'shoe Podpesochnoe
 =   - Bolshoe Shchuryach'e
