Recent documents disclosed through a freedom of information request indicate that Tanya Plibersek, the former Australian Minister for the Environment, chose not to act on recommendations to halt salmon farming operations at Macquarie Harbour in Tasmania. The federal environment department had advised revoking approvals for the industry back in January of the previous year, citing significant ecological impacts, particularly concerning the endangered Maugean skate, which lives in this unique habitat. Macquarie Harbour is noted as the last known sanctuary for this species, underlining the urgency of the recommendation.

The recommendation to revoke the salmon farming approvals was prompted by ongoing concerns from environmentalists and scientists regarding the adverse effects of the farming practices on local wildlife and ecosystem health. Documents indicated a clear warning from the department regarding the potential for further degradation of the harbor's water quality due to the intensive farming activities. However, Plibersek's inaction allowed the continuation of these practices, raising questions about the government's commitment to environmental protection at a time when biodiversity is increasingly under threat.

In addition to not acting on this advice, new legislation that passed in March last year has further complicated the situation. This legislation removed the requirement for the environment minister to review the previous approvals for salmon farming. As a result, the pathway for salmon farming in the harbour has been effectively secured, even as experts warn of its detrimental impact on the delicate ecosystem. This situation highlights a growing tension between industry interests and environmental conservation efforts in Australia, point to broader debates about legislative authority, and sets the stage for future conflicts over resource management in protected areas.