Relationship between nutrients and plankton biomass in the turbidity maximum zone of the Pearl River Estuary.

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  • Additional Information
    • Source:
      Publisher: IOS Press Country of Publication: Netherlands NLM ID: 100967627 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1001-0742 (Print) Linking ISSN: 10010742 NLM ISO Abbreviation: J Environ Sci (China) Subsets: MEDLINE
    • Publication Information:
      Publication: Amsterdam : IOS Press
      Original Publication: Beijing : Editorial Dept. of Journal of Environmental Sciences (China), 1989-
    • Subject Terms:
      Environmental Monitoring* ; Estuaries*; Nitrogen/*analysis ; Phosphorus/*analysis ; Plankton/*growth & development; Biomass ; China ; Eutrophication ; Phytoplankton ; Rivers/chemistry ; Seasons
    • Abstract:
      Nutrients, dissolved and particulate organic carbon and plankton (bacterio-, phyto- and zoo-) were compared in the turbidity maximum zone (TMZ) and adjacent areas (non-TMZ) in the Pearl River estuary. Our results showed that high levels of suspended substances had marked effect on dynamics of nutrients and plankton in the TMZ. Based on the cluster analysis of total suspended solids (TSS) concentrations, all stations were divided into two groups, TMZ with average TSS of 171mg/L and non-TMZ of 45mg/L. Suspended substances adsorbed PO 4 3- and dissolved organic carbon, resulting in higher particulate phosphorus and organic carbon (POC) and lower PO 4 3- and DOC in the TMZ, compared to the non-TMZ. However, suspended substances had limited effect on nitrogenous nutrients. Phytoplankton growth was light-limited due to high concentrations of suspended substances in the TMZ and a peak of phytoplankton abundance appeared in the non-TMZ. In contrast, the highest bacterial abundance occurred in the TMZ, which was likely partly responsible for low DOC levels. Two peaks of zooplankton abundance observed in the TMZ and non-TMZ in the Pearl River estuary were primarily supported by bacteria and phytoplankton, respectively. Our finding implied that high levels of suspended solids in the TMZ affect the trophic balance.
      (Copyright © 2016. Published by Elsevier B.V.)
    • Contributed Indexing:
      Keywords: Nutrient; Pearl River estuary; Plankton; Turbidity maximum zone
    • Accession Number:
      27YLU75U4W (Phosphorus)
      N762921K75 (Nitrogen)
    • Publication Date:
      Date Created: 20170626 Date Completed: 20170714 Latest Revision: 20170714
    • Publication Date:
      20231215
    • Accession Number:
      10.1016/j.jes.2016.11.013
    • Accession Number:
      28647267