塩性湿地におけるヒロクチカノコの分布特性  [in Japanese] Distribution characteristic of <i>Neripteron pileolus</i> in salt reed marsh  [in Japanese]

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Author(s)

    • 大谷 壮介 OTANI Sosuke
    • 大阪府立大学工業高等専門学校総合工学システム学科都市環境コース Civil Engineering and Environment Course, Department of Technological Systems, Osaka Prefecture University College of Technology
    • 大田 直友 OTA Naotomo
    • 阿南工業高等専門学校創造技術工学科化学コース Course of Chemical Engineering, Department of Creative Technology Engineering, National Institute of Technology, Anan College

Abstract

<p>The objective of the present study was to elucidate the distribution characteristic of <i>Neripteron pileolus</i> (Neritidae, Gastropoda), one of the endangered species in Japan, at two tidal flats around the river mouth in Tokushima Prefecture, Shikoku Island. We investigated the distribution of gastropods including <i>Neripteron pileolus</i> and several environmental variables at (1) 70 (small scale) and 124 stations (large scale) at a reed marsh in the Yoshino River Estuary in October 2004 and 2007; and (2) 130 stations at the Katsuura River Estuary in October 2005. Assimineidae spp., <i>Neripteron pileolus</i>, and <i>Cerithidea moerchii</i> were the dominant species in the reed marsh at the Yoshino River. The population density of <i>Neripteron pileolus</i> in the Yoshino River was higher than that in the Katsuura River. Further, the reed density was almost similar between the Yoshino and Katsuura Rivers. However, the number of dead leaves of reed in the Yoshino River was 14 times higher than that in the Katsuura River. The small-sized <i>Neripteron pileolus</i> (< 11 mm) were found to be attached to the dead leaves of reed. The multi-regression analysis and decision tree at different time and space revealed that the number of dead leaves of reed is the most important environmental variable affecting the distribution of <i>Neripteron pileolus</i></p>

Journal

  • Japanese Journal of Benthology

    Japanese Journal of Benthology 72(2), 71-78, 2018

    JAPANESE ASSOCIATION OF BENTHOLOGY

Codes

  • NII Article ID (NAID)
    130006708599
  • NII NACSIS-CAT ID (NCID)
    AA11376003
  • Text Lang
    JPN
  • ISSN
    1345-112X
  • NDL Article ID
    028992411
  • NDL Call No.
    Z74-B668
  • Data Source
    NDL  J-STAGE 
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