Nutrient limitation suppresses the temperature dependence of phytoplankton metabolic rates.

ABSTRACT: Climate warming has the potential to alter ecosystem function through temperature-dependent changes in individual metabolic rates. The temperature sensitivity of phytoplankton metabolism is especially relevant, since these microorganisms sustain marine food webs and are major drivers of biogeochemical cycling. Phytoplankton metabolic rates increase with temperature when nutrients are abundant, but it is unknown if the same pattern applies under nutrient-limited growth conditions, which prevail over most of the ocean. Here we use continuous cultures of three cosmopolitan and biogeochemically relevant species (Synechococcus sp., Skeletonema costatum and Emiliania huxleyi) to determine the temperature dependence (activation energy, E_a) of metabolism under different degrees of nitro

SUBMITTER: Maranon E 

PROVIDER: S-EPMC6018665 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature