Warming impacts on photosynthetic processes in dominant plant species in a subtropical forest.

Climate warming could shift some subtropical regions to a tropical climate in the next 30 years. Yet, climate warming impacts on subtropical species and ecosystems remain unclear. We conducted a passive warming experiment in a subtropical forest in Florida, USA, to determine warming impacts on four species differing in their climatic distribution, growth form, and functional type: Serenoa repens (palm), Andropogon glomeratus (C grass), Pinus palustris (needled evergreen tree), and Quercus laevis (broadleaved deciduous tree).