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Occasional and sharp increase in NH4+ availability due to massive input of sewage and agricultural runoff is not uncommon in inland aquatic systems; and its aftermath effects on the system should be evaluated as high NH4+ concentration is toxic to many animals and plants. In this study, an experiment mimic of natural NH4+ pulse was used to examine its effects on carbon (C) and nitrogen (N) metabolism...
The uptake kinetics of phosphate (Pi) by Myriophyllum spicatum was determined from adsorption and absorption under light and dark conditions. Pi uptake was light dependent and showed saturation following the Michaelis–Menten relation (in light: V=16.91×[Pi](1.335+[Pi]), R 2 =0.90, p<0.001; in the dark: V=5.13×[Pi](0.351+[Pi]), R 2 =0.77, p<0.001). Around 77% of the loss of Pi...
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