This function reads and checks files with AMBI sensitivity data. The data should be stored in 'comma separated values' format (csv) consisting of two columns:
TAXON species name;
GROUP Roman numeral (I, II, III, IV, V) giving the sensitivity group
1 2 3
name of the AMBI sensitivity file (character)
table in AMBI-format
The function performs the following tasks:
checks the existence of
checks availablitity of required columns (case insensitive);
removes redundant spaces;
removes duplicated records.
validate_ambi: validator for AMBI-format
Borja, A., J. Franco and V. Perez, 2000. A Marine Biotic Index to Establish the Ecological Quality of Soft-Bottom Benthos Within European Estuarine and Coastal Environments. Marine Pollution Bulletin 40:1100-1114
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