Todd Warren, who has been with First State for 15 years, will take on her role, with Tal Lomnitzer as deputy.
Warner has managed the £461m First State Global Resources Fund since November 2006.
Under her tenure the fund delivered 26% and, as with other funds in the sector, it has suffered a torrid time in recent years.
Lomnitzer will take on the running of that fund, as well the firm’s other offshore-domiciled funds in the sector.
“This is the culmination of a long-standing succession plan, carefully mapped out by Joanne and the team, to ensure the team is best placed to successfully manage their portfolios and continue to generate attractive returns for clients post the leadership succession.” said First State’s managing director, EMEA, Chris Turpin.
“Dr Warner has been an outstanding leader of our global resources business since 2010 and will soon celebrate both the team’s 20th anniversary as well as her own 20 years as a global resources portfolio manager with the business.”