"Some countries are willing to commit to a second commitment period," said Grenada's Dessima Williams, chair of the the Alliance of Small Island States (AOSIS).
"It is not anywhere near the full coverage that will be needed," she told AFP on the sidelines of a negotiating session of the 194-nation UN Framework Convention on Climate Change (UNFCCC), ending Friday.
"However, it is either that or the complete collapse of the system."
Kyoto, which covers 37 industrialised countries, is the only international deal with binding targets for curbing greenhouse gases.
A first commitment period expires at the end of 2012, and the fate of the treaty remains in limbo. More >>>
Location: Cayman Islands