Ecological shifts due to anthropogenic activities in the coastal seas of the Seto Inland Sea, Japan, since the 20th century

Toshiaki Irizuki, Kotaro Hirose, Yukari Ueda, Yuki Fujihara, Hiroaki Ishiga, Koji Seto

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Multiproxy analyses were conducted using sediment cores in a low-polluted coastal site (Hiuchi-nada) in the Seto Inland Sea (SIS), Japan. Heavy metal and organic pollution peaked in the 1960s and the bottom environments have ameliorated since the 1980s due to several environmental regulations. First ecological shifts in meiobenthic ostracodes and diatoms occurred in the 1960s due to the initiation of eutrophication. Then, a second ecological shift occurred in the 1980s due to the amelioration of the water and the bottom quality. A compilation of similar analytical results in the coastal seas of the SIS reveals three types of ecological and environmental history since the 20th century. The environmental improvement since the 1980s affects the ecosystems, in particular, in a low-polluted bay. However, ecological compositions are different from those prior to the 1960s, suggesting that the ecosystem was not recovered but changed into the next stage in the SIS.

    Original languageEnglish
    Pages (from-to)637-653
    Number of pages17
    JournalMarine Pollution Bulletin
    Volume127
    DOIs
    Publication statusPublished - 2018 Feb 1

    Fingerprint

    inland sea
    Ecosystems
    anthropogenic activities
    human activity
    Japan
    Eutrophication
    Environmental regulations
    environmental law
    Bacillariophyceae
    ecosystems
    Heavy metals
    eutrophication
    Sediments
    heavy metals
    Pollution
    environmental history
    ecosystem
    pollution
    History
    ostracod

    Keywords

    • Diatom
    • Ecosystem
    • Heavy metal pollution
    • Organic pollution
    • Ostracoda
    • Seto Inland Sea

    ASJC Scopus subject areas

    • Oceanography
    • Aquatic Science
    • Pollution

    Cite this

    Ecological shifts due to anthropogenic activities in the coastal seas of the Seto Inland Sea, Japan, since the 20th century. / Irizuki, Toshiaki; Hirose, Kotaro; Ueda, Yukari; Fujihara, Yuki; Ishiga, Hiroaki; Seto, Koji.

    In: Marine Pollution Bulletin, Vol. 127, 01.02.2018, p. 637-653.

    Research output: Contribution to journalArticle

    Irizuki, Toshiaki ; Hirose, Kotaro ; Ueda, Yukari ; Fujihara, Yuki ; Ishiga, Hiroaki ; Seto, Koji. / Ecological shifts due to anthropogenic activities in the coastal seas of the Seto Inland Sea, Japan, since the 20th century. In: Marine Pollution Bulletin. 2018 ; Vol. 127. pp. 637-653.
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    AU - Ishiga, Hiroaki

    AU - Seto, Koji

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