Changes in phytoplankton community after brackishing in Lake Koyama-ike in Tottori Prefecture, western Japan

DOI

Bibliographic Information

Other Title
  • 鳥取県湖山池の海水導入前後における植物プランクトン群集の変化

Abstract

We compared community structure in phytoplankton and water variables in epilimnetic waters in Lake Koyama-ike located in western Japan, between before and after brackishing project in 2012. Monthly-monitored data, with three replicated years each (i.e., before: 2009~2011, after: 2012~2014), were analyzed statistically to detect changes in the flora and water variables. Whereas insignificant effects of the brackishing on total abundances of phytoplankton (i.e., chl-a, cell density), it modified the community structure from freshwater-inhabitants dominated (e.g., Anabaena affinis , Cyclotella meneghiniana , Microcystis aeruginosa , Planktothrix agardhii ,) to brackish water and seawater-species dominating community (e.g., Cylindrotheca closterium , Heterocapsa rotundata , Skeletonema costatum ). Further, the brackishing resulted in an obviously increased salinity (1,800 ~8,000 mgCl-1 l-1) but limited changes in nutrient concentrations (i.e., decrease in ammonium (0.01 ~0.06 mgNH 4+ l-1) and insignificant changes in other nutrients) in epilimnetic waters.

Journal

  • Laguna

    Laguna 23 (0), 01-12, 2016

    Japanese Association for Estuarine Science

Keywords

Details 詳細情報について

  • CRID
    1390862623772021376
  • DOI
    10.60290/laguna.23.0_01
  • ISSN
    21852995
    13403834
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Allowed

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