Phosphorus speciation and budget of the East China Sea

  • Fang T
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Water samples collected from the inner (200m) shelves of the East China Sea (ECS) were analyzed to investigate the importance of dissolved inorganic phosphorus (DIP), dissolved organic phosphorus (DOP) and particulate inorganic phosphorus (PIP) in the water column. Concentrations of DIP, DOP and PIP ranged 0.05-3.01μM, 0.01-0.54μM and 0.18-13.94ìmolg-1, respectively. Higher values were generally found in the inner shelf. Significantly higher concentrations of suspended particulate matter (SPM) (mean value 16.87mgl-1) and PIP (mean value 11.59μmolg-1) were found near the bottom along the inner shelf and was attributed to re-suspension of sediments. DIP was the major form of dissolved P, accounting for more than 70% of the total dissolved P (TDP) pool in inner and middle shelf waters. However, the DOP concentration generally exceeded the DIP concentration in the surface layer (

Author-supplied keywords

  • East China Sea
  • Phosphorus budget
  • Phosphorus species

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  • Tien Hsi Fang

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