Changes in relative nitrogen:phosphorus requirements for phytoplankton growth with absolute nutrient levels and their macromolecular basis

概要

Nitrogen (N) and phosphorus (P) are two predominant elements utilized in the
biochemical functions of phytoplankton, and the main nutrients limiting phytoplankton
growth in aquatic ecosystems. Clarifying the pattern of relative N-to-P requirements for
phytoplankton growth is of great significance for eutrophication mitigation and
management of aquatic systems. Relative N-to-P requirement for phytoplankton growth
is considered as an essential trait determining species dominance within ecosystems and
explaining phytoplankton response to nutrient availability. These requirements vary with
environmental trophic statuses, though this variation remains unclear. Moreover, the
underlying macromolecules basis of the relative N-to-P requirement for phytoplankton
growth was also poorly understood. ...