Phytoplankton Ecology in the Upper Swan River Estuary, Western Australia - Nitrogen uptake for inorganic and organic nitrogen sources

The main aim of this study was to detemine seasonal uptake kinetics for the different nitrogen species; two inorganic sources (NO3- and NH4+), and an organic source (urea) in the upper Swan River estuary from November 1997 to November 1998. Uptake kinetics were related to species composition and ambient concentrations of these three nitrogen sources to determine whether physiological adaptation to the ambient N-species concentrations present are indicated in seasonal species assemblages

本研究的核心目标为探明1997年11月至1998年11月期间，天鹅河河口上段水体中不同氮形态（nitrogen species）的季节吸收动力学（uptake kinetics）特征；所涵盖的氮形态包括两种无机氮源（NO₃⁻与NH₄⁺）以及一种有机氮源尿素（urea）。本研究将吸收动力学与上述三种氮源的物种组成及环境浓度相关联，旨在探明季节性物种群落是否体现出对所处环境氮形态浓度的生理适应性。