translate English to French: Harvest of all three scoter species in Canada and the United States has declined considerably since the 1970s (Tables 13-15).
Les prises des trois espÃ¨ces de macreuses au Canada et aux Ã‰tats-Unis ont considÃ©rablement diminuÃ© depuis les annÃ©es 1970 (tableaux 13 Ã 15).