title: The influences of various anthropogenic sources of deterioration on meiobenthos (Ostracoda) over the last 100 years in Suo-Nada in the Seto Inland Sea, southwest Japan.
abstract: This study focuses on the relationships of water and sediment quality with meiobenthos (Ostracoda) over the past 100 years, using a sediment core obtained from Suo-Nada in the Seto Inland Sea, Japan. We compared high-resolution ostracode results with geochemical and sedimentological data obtained from the study core as well as with rich environmental monitoring data that are available. R-mode cluster analysis revealed two bioassociations (BC, KA). Until the 1960 s, assemblages continued to show high diversity. They changed in approximately 1970, when excessive nutrients and organic matter began to be supplied, and most species decreased in number. All species of bioassociation BC were dominant again by the mid-1990 s; however, those of bioassociation KA containing infaunal species did not increase and have been absent or rare since the 1970s because organic pollution of sediments has continued to date. This study provided robust baseline for ostracode-based long-term environmental monitoring in East Asia.
authors: Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu-cho, Matsue 690-8504, Japan. irizuki@riko.shimane-u.ac.jp
authors: Toshiaki
authors: T
authors: Irizuki
authors: Ayako
authors: A
authors: Takimoto
authors: Megumi
authors: M
authors: Sako
authors: Ritsuo
authors: R
authors: Nomura
authors: Kouji
authors: K
authors: Kakuno
authors: Akihito
authors: A
authors: Wanishi
authors: Shigenori
authors: S
authors: Kawano
mesh_terms: D000818:Animals; D044822:Biodiversity; D003445:Crustacea / Q000145:classification / Q000187:drug effects* / Q000254:growth & development; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000737:chemistry; D007564:Japan; D012623:Seawater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data*
chemical_list: D014874:Water Pollutants, Chemical