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

本研究的主要目的是测定1997年11月至1998年11月期间天鹅河上游河口内三种不同氮形态的季节吸收动力学，其中两种为无机氮源（硝酸根NO3-与氨根NH4+），另一种为有机氮源尿素。研究将吸收动力学与该区域的物种组成及上述三种氮源的环境浓度进行关联分析，以探明针对当前环境氮形态浓度的生理适应是否在季节物种种群中有所体现。