"Senator Christine Milne is a wonderful inspiration, mentor and friend of mine," Senator Larissa Waters said.
"We have thrived under Senator Milne's admirable leadership, working together with a vision for a more caring society, a clean environment and a safe climate.
"I am proud to take on the role of co-deputy leader in partnership with my colleague Senator Scott Ludlam, under the leadership of Senator Richard Di Natale, who will be an outstanding leader.
"As co-deputy leader, I will continue to stand up for a sustainable future for Queensland, which deserves an economy that cares for people and the environment.
"I will continue to advocate strongly for a transition from climate-destroying fossil fuels to renewable energy and long-term jobs, without sacrificing our Great Barrier Reef, farmland or the climate.
"Along with the work of the Queensland Greens and many environment and community groups, I've been proud to contribute to the successful campaign to end dredge spoil dumping in the Great Barrier Reef.
"I'm also proud of our work for the last four years standing alongside rural communities against coal and coal seam gas.
"In my role as the Australian Greens spokesperson for women, I have helped to bring the scourge of domestic violence out of the shadows and have strongly opposed the Abbott Government's cruel funding cuts to services for women escaping of domestic violence.
"I am passionate about gender equality and I'm a proud feminist, so ending the gender pay gap, rewarding unpaid caring work, and women's rights to choose are some key priorities.
"I look forward to continuing to work with Queenslanders and all of our passionate Queensland Greens members, for a caring society, a healthy economy and a clean environment in this new role," Senator Waters said.