-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ts_level_ii.csv The file contains a list of tree species observed on ICP Forests Level II plots ATTRIBUTE CATALOGUE*: - code_country (PK**): ID of the country (data dictionary under: https://icp-forests.org/documentation/Dictionaries/d_country.html) - partner_code: ID of the data submitting party (data dictionary under: https://icp-forests.org/documentation/Dictionaries/d_partner.html) - code_plot (PK**): Unique/persistend plot identifier in a country - code_tree_species: coded main tree species (data dictionary under: https://icp-forests.org/documentation/Dictionaries/d_tree_spec.html) - tree_species: observed tree species - from_year: first year the species has been observed on this plot - to_year: last year the species has been observed on this plot * column wise description ** primary key -- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++