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Mr Jarvie, was the only new appointment to the guardians, who look after lakes Manapouri, Monowai and Te Anau.
Dr Smith also reappointed Teresa McClelland as chairwoman and Jane Davis and Muriel Johnston as the Ngai Tahu representatives, for terms of five years.
The guardians were established under the Conservation Act as a result of the Save Manapouri Campaign and had a prominent place in the history of conservation in New Zealand.
They reported annually to the Government on matters arising from the environmental, ecological and social impacts of the power schemes on the lakes, and made recommendations to the Government concerning the operation guidelines, Dr Smith said.
The other guardians are Sue Bennett, Fred Inder, Marc Schallenberg, Ian Welsh and Darryl Sycamore.