HomeAntarctica Status Lists ...21. Recommendations adopted at the Sixteenth Consultative Meeting, done at Bonn October 7-18, 1991. hide 21. Recommendations adopted at the Sixteenth Consultative Meeting, done at Bonn October 7-18, 1991. Depositary – Treaty Affairs Office of Treaty Affairs Entered into force May 24, 2002 for XVI-101. Article IX, paragraph 4, of the Antarctic Treaty provides that recommended measures “shall become effective when approved by all the Contracting Parties whose representatives were entitled to participate in the meetings held to consider those measures.” Download status lists [140 KB] Tags Antarctic Multilateral Treaties