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Title: The intertidal macrobenthic fauna of the Hatakejima Experimental Field, Wakayama Prefecture, Japan, in 2019
Authors: NAKANO, TOMOYUKI  kyouindb  KAKEN_id
KAWAMURA, MARIKO
KOBAYASHI, GENKI
KOIZUMI, KEISUKE
NAKAYAMA, RYO
SUGIYAMA, TAKAHIRO
SHIMOMURA, MICHITAKA
ASAKURA, AKIRA  kyouindb  KAKEN_id
Author's alias: 中野, 智之
河村, 真理子
小林, 元樹
小泉, 佳祐
中山, 凌
杉山, 高大
下村, 通誉
朝倉, 彰
Keywords: long-term monitoring
invertebrates
diversity
non-indigenous species
large meander of the Kuroshio
winter mortality
Issue Date: 30-Apr-2021
Publisher: Seto Marine Biological Laboratory, Field Science Education and Research Center, Kyoto University
Journal title: Publications of the Seto Marine Biological Laboratory
Volume: 46
Start page: 1
End page: 41
Abstract: Hatakejima Experimental Field is located in Tanabe Bay, Wakayama Prefecture, Japan, which is composed of Hatakejima Island and Komarujima Islet, connected to the former in low tide. Hatakejima Island was purchased by Kyoto University and was designated as the “Hatakejima Experimental Field” in 1968. The year 2019 marks the 50th year of the long-term surveys that have been formally conducted on the experimental field since 1969 (i.e., the Century of Research Project). We conducted a field survey to record the macrobenthic fauna of the experimental field in 2019. A total of 168 species of 11 phyla were recorded in this survey. In each phylum, the number of species is listed as follows in descending order: Mollusca (78 spp.), Arthropoda (27 spp.), Echinodermata (23 spp.), Annelida (21 spp.), Cnidaria (7 spp.), Porifera (3 spp.), Nemertea (3 spp.), Platyhelminthes (2 spp.), Chordata (2 spp.), Bryozoa (1 sp.), and Hemichordata (1 sp.). We also recorded and discussed the influence of recent environmental changes around the Hatakejima Experimental Field. Tropical sea urchin species disappeared in the winter of 2017–2018 following the large meander of the Kuroshio Current, which led to decreasing water temperatures. The population of the seagrass Zostera japonica drastically decreased on the western sandy shore of the island in 2019, most likely because of two big typhoons in September 2018. We must conduct continuous observations to aid the recovery of seagrass-associated communities and protect the experimental field to keep high biodiversity of macrobenthic fauna in the future.
Description: ファイル差し替え(2021-05-17)
URI: http://hdl.handle.net/2433/262624
DOI(Published Version): 10.5134/262624
Appears in Collections:Vol.46

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