Columbia subject headings:
Biodiversity conservation--Brazil--Rio Negro (Amazonas)
Ecological assessment (Biology)--Brazil--Rio Negro (Amazonas)
Environmental policy--Brazil--Rio Negro (Amazonas)
Rio Negro (Amazonas, Brazil)--Environmental conditions.
Sustainable development--Brazil--Rio Negro (Amazonas)
Harvard subject headings:
Biodiversity conservation--Brazil--Rio Negro (Amazonas)
Ecological assessment (Biology)--Brazil--Rio Negro (Amazonas)
Rio Negro (Amazonas, Brazil)--Environmental conditions.
Princeton subject headings:
Biodiversity conservation--Brazil--Rio Negro (Amazonas).
Ecological assessment (Biology)--Brazil--Rio Negro (Amazonas).
Rio Negro (Amazonas, Brazil)--Environmental conditions.