Analyses of faunal changes of macrobenthos in Ariake Bay after the construction of dike for the Isahaya Reclamation Project ―Research Group for Conservation Ecology on the Ariake Bay―

DOI

Bibliographic Information

Other Title
  • 諫早湾潮止め後20年間の有明海底生動物群集変化の総括的研究 ―有明海保全生態学研究グループ―

Abstract

<p>Since April 1997, the inner part of Isahaya Bay has been isolated from Ariake Sea by a dike for reclamation. We periodically monitored water quality, grain-size of bottom sediments and benthic animals using the sediment samples collected from (1) 50 fixed stations around inner part of Ariake Sea on 9 and 10 June 2018 and (2) 16 fixed stations inside of the dike on 11 June 2018. According to our results, in the both inner and outer parts of Isahaya Bay, number of species and mean individual density of benthic animals have been still smaller than the past. After the shut-off, benthic animals rapidly decreased from 1998 to 2001, and then only few species increased from 2002 to 2003. However, from 2004 to 2018, most of them have disappeared or decreased rapidly in the both inner and outer parts of Isahaya Bay. The results of this research will be used as the theoretical ground in order to require the investigation of opening the gate against the Japanese Government, and these will be possible to supply basic data before opening the gate for future studies after opening the gate of Isahaya Bay.</p>

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Details 詳細情報について

  • CRID
    1390283659838981120
  • NII Article ID
    130007784378
  • DOI
    10.32215/pronatura.28.0_1
  • ISSN
    21897727
    24320943
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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