Phytoplankton succession explains size-partitioning of new production following upwelling-induced blooms

摘要: Abstract Large and chain-forming diatoms typically dominate the phytoplankton biomass after initiation of coastal upwelling. The ability these to accelerate maintain elevated nitrate uptake rates has been proposed explain dominance over all other groups. Moreover, observed delay in accumulation following supply upwelling events hypothesised result from changes diatom community structure or physiological acclimation. To investigate mechanisms, we used both numerical modelling experimental incubations that reproduced characteristic succession small large species composition size structure. Using Tracers Of Phytoplankton with Allometric Zooplankton (TOPAZ) ecosystem model as a framework, find variations functional group-specific traits must be taken into account, through adjustments group-dependent maximum production (P Cmax , s − 1 ), order accurately reproduce patterns timescales size-partitioned new non-steady state environment. Representation neither nutrient acclimation, nor diversity was necessary long lower than theoretical were implemented. We conclude this feature, P is critical representing early, relatively higher specific rate diatoms, explains differential success communities response during