Debate on whether to keep the forestry peace deal alive is underway in the upper house.
The Legislative Council appears split on whether to pass an order to create the first tranche of reserves. If it is rejected the entire peace deal process will collapse.
Apsley MLC Tania Rattray, who previously opposed the Tasmanian Forest Agreement legislation, has confirmed she will now support it.
However, a supporter of the legislation, Tony Mulder, who is yet to speak, has indicated he will not back the reserve orders.
Of the eight MLCs to speak so far, only Liberal MLC Vanessa Goodwin and Huon MLC Paul Harriss have opposed it.
Earlier, Leader of the Government in the Legislative Council Craig Farrell said passing the reserve orders was crucial to allowing Tasmania to move on from the divisive issue.
''The alternative is dire,'' Mr Farrell said.